Ooops, use correct variable name.

This is showing up in the wild, but not clear how, so extend the
logging.

simgear-version

@@ -1 +1 @@
-2020.3.9
+2020.3.11

simgear/debug/ErrorReportingCallback.cxx

@@ -17,11 +17,15 @@
 
 #include "ErrorReportingCallback.hxx"
 
+#include <simgear/misc/sg_path.hxx>
+
 using std::string;
 
 namespace simgear {
 
 static ErrorReportCallback static_callback;
+static ContextCallback static_contextCallback;
+
 
 void setErrorReportCallback(ErrorReportCallback cb)
 {
@@ -44,4 +48,73 @@ void reportFatalError(const std::string& msg, const std::string& more)
     static_callback(msg, more, true);
 }
 
+static FailureCallback static_failureCallback;
+
+void reportFailure(LoadFailure type, ErrorCode code, const std::string& details, sg_location loc)
+{
+    if (!static_failureCallback) {
+        return;
+    }
+
+    static_failureCallback(type, code, details, loc);
+}
+
+void reportFailure(LoadFailure type, ErrorCode code, const std::string& details, const SGPath& path)
+{
+    if (!static_failureCallback) {
+        return;
+    }
+
+    static_failureCallback(type, code, details, sg_location{path});
+}
+
+void setFailureCallback(FailureCallback cb)
+{
+    static_failureCallback = cb;
+}
+
+void setErrorContextCallback(ContextCallback cb)
+{
+    static_contextCallback = cb;
+}
+
+ErrorReportContext::ErrorReportContext(const std::string& key, const std::string& value)
+{
+    add(key, value);
+}
+
+void ErrorReportContext::add(const std::string& key, const std::string& value)
+{
+    if (static_contextCallback) {
+        _keys.push_back(key);
+        static_contextCallback(key, value);
+    }
+}
+
+ErrorReportContext::ErrorReportContext(const ContextMap& context)
+{
+    addFromMap(context);
+}
+
+void ErrorReportContext::addFromMap(const ContextMap& context)
+{
+    if (static_contextCallback) {
+        for (const auto& p : context) {
+            _keys.push_back(p.first);
+            static_contextCallback(p.first, p.second);
+        }
+    }
+}
+
+
+ErrorReportContext::~ErrorReportContext()
+{
+    if (static_contextCallback) {
+        // pop all our keys
+        for (const auto& k : _keys) {
+            static_contextCallback(k, "POP");
+        }
+    }
+}
+
 } // namespace simgear

simgear/debug/ErrorReportingCallback.hxx

@@ -16,7 +16,14 @@
 #pragma once
 
 #include <functional>
+#include <map>
 #include <string>
+#include <vector>
+
+#include <simgear/structure/exception.hxx>
+
+//forward decls
+class SGPath;
 
 namespace simgear {
 
@@ -28,4 +35,94 @@ using ErrorReportCallback = std::function<void(const std::string& msg, const std
 
 void setErrorReportCallback(ErrorReportCallback cb);
 
+/** kinds of failures we can report. This is *how* (or why) something failed. Extend
+  as necessary but update the correponsdings string translations if you do. More detail isn't
+ necessariyl useful here: better to provide that in the 'details' string
+ */
+enum class LoadFailure {
+    Unknown,
+    NotFound,
+    OutOfMemory,
+    BadHeader,
+    BadData,
+    Misconfigured,
+    IOError, // disk full, permissions error, etc
+    NetworkError
+};
+
+/**
+ @brief enum of the operations which can fail. This should be extended as necessary: it maps to
+ translated error messages for the user. This describes what failed, the enum above gives why/how. The
+ combination of what+why should be something at the user level: use details for debug-level information.
+ */
+enum class ErrorCode {
+    LoadEffectsShaders,
+    LoadingTexture,
+    XMLModelLoad,
+    ThreeDModelLoad, // AC3D, OBJ, etc
+    BTGLoad,
+    ScenarioLoad,
+    GUIDialog,
+    AudioFX,
+    XMLLoadCommand,
+    AircraftSystems, // autopilot, hydrualics, instruments
+    InputDeviceConfig,
+    AITrafficSchedule,
+    TerraSync
+};
+/**
+ @brief Define an error-reporting context value, for the duration of this
+ object's lifetime. The context value will be active for any errors occuring on the same thread, while
+ this object exists.
+ */
+class ErrorReportContext
+{
+public:
+    ErrorReportContext(const std::string& key, const std::string& value);
+
+    using ContextMap = std::map<std::string, std::string>;
+
+    /**
+    Allow establishing multiple context values in a single operation
+     */
+    ErrorReportContext(const ContextMap& context = {});
+
+    void add(const std::string& key, const std::string& value);
+
+    /**
+     @brief allowed delayed add of values
+     */
+    void addFromMap(const ContextMap& context);
+
+    ~ErrorReportContext();
+
+private:
+    std::vector<std::string> _keys;
+};
+
+/**
+ * @brief Report failure to load a resource, so they can be collated for reporting
+ * to the user.
+ * 
+ * @param type - the reason for the failure, if it can be determined
+ * @param msg - an informational message about what caused the failure
+ * @param path - path on disk to the resource. In some cases this may be a relative path;
+ *  especially in the case of a resource not found, we cannot report a file path.
+ */
+
+void reportFailure(LoadFailure type, ErrorCode code, const std::string& detailedMessage = {}, sg_location loc = {});
+
+/**
+  overload taking a path as the location
+ */
+void reportFailure(LoadFailure type, ErrorCode code, const std::string& detailedMessage, const SGPath& p);
+
+using FailureCallback = std::function<void(LoadFailure type, ErrorCode code, const std::string& details, const sg_location& location)>;
+
+void setFailureCallback(FailureCallback cb);
+
+using ContextCallback = std::function<void(const std::string& key, const std::string& value)>;
+
+void setErrorContextCallback(ContextCallback cb);
+
 } // namespace simgear

simgear/io/HTTPRepository.cxx

@@ -35,11 +35,12 @@
 #include "simgear/debug/logstream.hxx"
 #include "simgear/misc/strutils.hxx"
 
-#include <simgear/misc/sg_dir.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
 #include <simgear/io/HTTPClient.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/io/sg_file.hxx>
 #include <simgear/io/untar.hxx>
-#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/misc/sg_dir.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -218,8 +219,7 @@ public:
             return;
         }
 
-        char* buf = nullptr;
-        size_t bufSize = 0;
+        std::vector<char> buf;
 
         for (auto& child : children) {
             if (child.type != HTTPRepository::FileType)
@@ -240,17 +240,34 @@ public:
             src.open(SG_IO_IN);
             dst.open(SG_IO_OUT);
 
-            if (bufSize < cp.sizeInBytes()) {
-                bufSize = cp.sizeInBytes();
-                free(buf);
-                buf = (char*)malloc(bufSize);
-                if (!buf) {
-                    continue;
+            const auto sizeToCopy = cp.sizeInBytes();
+            if (buf.size() < sizeToCopy) {
+                try {
+                    buf.resize(sizeToCopy);
+                } catch (std::bad_alloc) {
+                    simgear::reportFailure(simgear::LoadFailure::OutOfMemory, simgear::ErrorCode::TerraSync,
+                                           "copyInstalledChildren: couldn't allocation copy buffer of size:" + std::to_string(sizeToCopy),
+                                           child.path);
+                    return;
                 }
             }
 
-            src.read(buf, cp.sizeInBytes());
-            dst.write(buf, cp.sizeInBytes());
+            const auto r = src.read(buf.data(), sizeToCopy);
+            if (r != sizeToCopy) {
+                simgear::reportFailure(simgear::LoadFailure::IOError, simgear::ErrorCode::TerraSync,
+                                       "copyInstalledChildren: read underflow, got:" + std::to_string(r),
+                                       cp);
+                return;
+            }
+
+            const auto written = dst.write(buf.data(), sizeToCopy);
+            if (written != sizeToCopy) {
+                simgear::reportFailure(simgear::LoadFailure::IOError, simgear::ErrorCode::TerraSync,
+                                       "copyInstalledChildren: write underflow, wrote:" + std::to_string(r),
+                                       child.path);
+                return;
+            }
+
             src.close();
             dst.close();
 
@@ -260,9 +277,7 @@ public:
 
             std::string hash = computeHashForPath(child.path);
             updatedFileContents(child.path, hash);
-                }
-
-                free(buf);
+        }
     }
 
     /// helper to check and erase 'fooBar' from paths, if passed fooBar.zip, fooBar.tgz, etc.
@@ -759,7 +774,7 @@ private:
 
         if (!ok) {
             SG_LOG(SG_TERRASYNC, SG_WARN, "removal failed for:" << path);
-            throw sg_io_exception("Failed to remove existing file/dir:", path);
+            throw sg_io_exception("Failed to remove existing file/dir:", path, "", false);
         }
     }
 
@@ -1019,13 +1034,20 @@ HTTPRepository::failure() const
             if (!file.get()) {
                 const bool ok = createOutputFile();
                 if (!ok) {
+                    ioFailureOccurred = true;
                     _directory->repository()->http->cancelRequest(
                         this, "Unable to create output file:" + pathInRepo.utf8Str());
                 }
             }
 
             sha1_write(&hashContext, s, n);
-            file->write(s, n);
+            const auto written = file->write(s, n);
+            if (written != n) {
+                SG_LOG(SG_TERRASYNC, SG_WARN, "Underflow writing to " << pathInRepo);
+                ioFailureOccurred = true;
+                _directory->repository()->http->cancelRequest(
+                    this, "Unable to write to output file:" + pathInRepo.utf8Str());
+            }
         }
 
         bool createOutputFile()
@@ -1082,8 +1104,15 @@ HTTPRepository::failure() const
 
       void onFail() override {
         HTTPRepository::ResultCode code = HTTPRepository::REPO_ERROR_SOCKET;
+
+        // -1 means request cancelled locally
         if (responseCode() == -1) {
-          code = HTTPRepository::REPO_ERROR_CANCELLED;
+            if (ioFailureOccurred) {
+                // cancelled by code above due to IO error
+                code = HTTPRepository::REPO_ERROR_IO;
+            } else {
+                code = HTTPRepository::REPO_ERROR_CANCELLED;
+            }
         }
 
         if (file) {
@@ -1120,6 +1149,10 @@ HTTPRepository::failure() const
         SGPath pathInRepo;
         simgear::sha1nfo hashContext;
         std::unique_ptr<SGBinaryFile> file;
+
+        /// becuase we cancel() in the case of an IO failure, we need to a way to distuinguish
+        /// user initated cancellation and IO-failure cancellation in onFail. This flag lets us do that
+        bool ioFailureOccurred = false;
     };
 
     class DirGetRequest : public HTTPRepoGetRequest
@@ -1373,6 +1406,9 @@ HTTPRepository::failure() const
         if (st == HTTPRepository::REPO_ERROR_FILE_NOT_FOUND) {
             status = HTTPRepository::REPO_ERROR_NOT_FOUND;
         } else {
+            simgear::reportFailure(simgear::LoadFailure::NetworkError, simgear::ErrorCode::TerraSync,
+                                   "failed to get TerraSync repository root:" + innerResultCodeAsString(st),
+                                   sg_location{baseUrl});
             SG_LOG(SG_TERRASYNC, SG_WARN, "Failed to get root of repo:" << baseUrl << " " << st);
             status = st;
         }
@@ -1388,7 +1424,12 @@ HTTPRepository::failure() const
         SG_LOG(SG_TERRASYNC, SG_WARN,
                "failed to update entry:" << relativePath << " status/code: "
                                          << innerResultCodeAsString(fileStatus)
-                                         << "/" << fileStatus);
+                                         << "/" << fileStatus
+                                         << "\nrepo:" << baseUrl);
+
+        simgear::reportFailure(simgear::LoadFailure::NetworkError, simgear::ErrorCode::TerraSync,
+                               "failed to update entry:" + innerResultCodeAsString(fileStatus),
+                               sg_location{relativePath});
       }
 
       HTTPRepository::Failure f;

simgear/io/lowlevel.cxx

@@ -48,9 +48,11 @@ static std::string gzErrorMessage(gzFile fd)
 
     if (errNum == Z_ERRNO) {
         return simgear::strutils::error_string(errno);
-    } else {
+    } else if (gzMsg) {
         return {gzMsg};
     }
+
+    return {"GZError: no string code for code:" + std::to_string(errNum)};
 }
 
 void sgReadChar ( gzFile fd, char *var )

simgear/io/sg_binobj.cxx

@@ -41,9 +41,10 @@
 #include <bitset>
 
 #include <simgear/bucket/newbucket.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/math/SGGeometry.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/misc/strutils.hxx>
-#include <simgear/math/SGGeometry.hxx>
 #include <simgear/structure/exception.hxx>
 
 #include "lowlevel.hxx"
@@ -502,6 +503,8 @@ bool SGBinObject::read_bin( const SGPath& file )
         unsigned int nbytes;
         sgSimpleBuffer buf( 32768 );  // 32 Kb
 
+        simgear::ErrorReportContext ec("btg", file.utf8Str());
+
         // zero out structures
         gbs_center = SGVec3d(0, 0, 0);
         gbs_radius = 0.0;

simgear/io/sg_file.cxx

@@ -82,9 +82,7 @@ std::string SGFile::computeHash()
         [](char* p) { free(p); }};
 
     if (!buf) {
-        // @TODO report out of memory error
-        SG_LOG(SG_IO, SG_ALERT, "Failed to malloc buffer for SHA1 check:" << file_name);
-        return {};
+        throw sg_exception("Malloc of SHA buffer failed", {}, file_name);
     }
 
     size_t readLen;

simgear/misc/sg_path.cxx

@@ -48,6 +48,7 @@
 #endif
 
 #include "sg_path.hxx"
+#include <simgear/misc/sg_dir.hxx>
 
 using std::string;
 using simgear::strutils::starts_with;
@@ -995,8 +996,9 @@ SGPath SGPath::realpath() const
               // (needed for fgValidatePath security)
     {
         if (path.empty()) {
-            return SGPath(".").realpath(); // current directory
+            return simgear::Dir::current().path();
         }
+
         std::string this_dir = dir();
         if (isAbsolute() && this_dir.empty()) { // top level
             this_dir = "/";

simgear/package/Catalog.cxx

@@ -143,9 +143,15 @@ protected:
         Dir d(m_owner->installRoot());
         SGPath p = d.file("catalog.xml");
         sg_ofstream f(p, std::ios::out | std::ios::trunc);
-        f.write(m_buffer.data(), m_buffer.size());
+        const auto sz = m_buffer.size();
+        f.write(m_buffer.data(), sz);
         f.close();
 
+        if (f.fail()) {
+            m_owner->refreshComplete(Delegate::FAIL_FILESYSTEM);
+            return;
+        }
+
         time(&m_owner->m_retrievedTime);
         m_owner->writeTimestamp();
         m_owner->refreshComplete(Delegate::STATUS_REFRESHED);

simgear/props/condition.cxx

@@ -535,7 +535,8 @@ readComparison( SGPropertyNode *prop_root,
 {
   SGComparisonCondition * condition = new SGComparisonCondition(type, reverse);
   if (node->nChildren() < 2 || node->nChildren() > 3 ) {
-    throw sg_exception("condition: comparison without two or three children");
+    throw sg_exception("condition: comparison without two or three children",
+                       {}, {}, false);
   }
   
   const SGPropertyNode* left = node->getChild(0), 
@@ -551,7 +552,8 @@ readComparison( SGPropertyNode *prop_root,
       SGExpressiond* exp = SGReadDoubleExpression(prop_root, left->getChild(0));
       condition->setLeftDExpression(exp);
     } else {
-      throw sg_exception("Unknown condition comparison left child:" + leftName);
+      throw sg_exception("Unknown condition comparison left child:" + leftName,
+                         {}, {}, false);
     }
   }
     
@@ -565,7 +567,8 @@ readComparison( SGPropertyNode *prop_root,
       SGExpressiond* exp = SGReadDoubleExpression(prop_root, right->getChild(0));
       condition->setRightDExpression(exp);
     } else {
-      throw sg_exception("Unknown condition comparison right child:" + rightName);
+      throw sg_exception("Unknown condition comparison right child:" + rightName,
+                         {}, {}, false);
     }
   }
   
@@ -580,7 +583,8 @@ readComparison( SGPropertyNode *prop_root,
       SGExpressiond* exp = SGReadDoubleExpression(prop_root, n->getChild(0));
       condition->setPrecisionDExpression(exp);
     } else {
-      throw sg_exception("Unknown condition comparison precision child:" + name );
+      throw sg_exception("Unknown condition comparison precision child:" + name,
+                         {}, {}, false);
     }
   }
   

simgear/props/props_io.cxx

@@ -161,7 +161,7 @@ setFlag( int& mode,
     string message = "Unrecognized flag value '";
     message += flag;
     message += '\'';
-    throw sg_io_exception(message, location, SG_ORIGIN);
+    throw sg_io_exception(message, location, SG_ORIGIN, false);
   }
 }
 
@@ -176,7 +176,7 @@ PropsVisitor::startElement (const char * name, const XMLAttributes &atts)
       string message = "Root element name is ";
       message += name;
       message += "; expected PropertyList";
-      throw sg_io_exception(message, location, SG_ORIGIN);
+      throw sg_io_exception(message, location, SG_ORIGIN, false);
     }
 
     // Check for an include.
@@ -188,7 +188,7 @@ PropsVisitor::startElement (const char * name, const XMLAttributes &atts)
           {
               string message ="Cannot open file ";
               message += attval;
-              throw sg_io_exception(message, location, SG_ORIGIN);
+              throw sg_io_exception(message, location, SG_ORIGIN, false);
           }
           readProperties(path, _root, 0, _extended);
       } catch (sg_io_exception &e) {
@@ -278,7 +278,7 @@ PropsVisitor::startElement (const char * name, const XMLAttributes &atts)
           {
             string message ="Cannot open file ";
             message += val;
-            throw sg_io_exception(message, location, SG_ORIGIN);
+            throw sg_io_exception(message, location, SG_ORIGIN, false);
           }
           readProperties(path, node, 0, _extended);
         }
@@ -353,7 +353,7 @@ PropsVisitor::endElement (const char * name)
       string message = "Unrecognized data type '";
       message += st.type;
       message += '\'';
-      throw sg_io_exception(message, location, SG_ORIGIN);
+      throw sg_io_exception(message, location, SG_ORIGIN, false);
     }
     if( !ret )
       SG_LOG
@@ -701,7 +701,7 @@ writeProperties (const SGPath &path, const SGPropertyNode * start_node,
   if (output.good()) {
     writeProperties(output, start_node, write_all, archive_flag);
   } else {
-    throw sg_io_exception("Cannot open file", sg_location(path.utf8Str()));
+    throw sg_io_exception("Cannot open file", sg_location(path.utf8Str()), "", false);
   }
 }
 
@@ -770,7 +770,7 @@ copyPropertyValue(const SGPropertyNode *in, SGPropertyNode *out)
                 break;
             string message = "Unknown internal SGPropertyNode type";
             message += in->getType();
-            throw sg_error(message, SG_ORIGIN);
+            throw sg_error(message, SG_ORIGIN, false);
     }
     
     return retval;

simgear/scene/material/Effect.cxx

@@ -67,9 +67,14 @@
 #include <osgDB/ReadFile>
 #include <osgDB/Registry>
 
-#include <simgear/scene/util/SGReaderWriterOptions.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/props/props_io.hxx>
+#include <simgear/props/vectorPropTemplates.hxx>
 #include <simgear/scene/tgdb/userdata.hxx>
 #include <simgear/scene/util/OsgMath.hxx>
+#include <simgear/scene/util/SGProgram.hxx>
+#include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/SGSceneFeatures.hxx>
 #include <simgear/scene/util/StateAttributeFactory.hxx>
 #include <simgear/structure/OSGUtils.hxx>
@@ -103,6 +108,7 @@ bool loadShaderFromUTF8File(osg::Shader* shader, const std::string& fileName)
     if (!inStream.is_open())
         return false;
 
+    shader->setFileName(fileName);
     shader->setShaderSource(inStream.read_all());
     return true;
 }
@@ -221,8 +227,9 @@ Effect::Effect()
 }
 
 Effect::Effect(const Effect& rhs, const CopyOp& copyop)
-    : osg::Object(rhs,copyop), root(rhs.root), parametersProp(rhs.parametersProp), _cache(0),
-      _isRealized(rhs._isRealized)
+    : osg::Object(rhs, copyop), root(rhs.root), parametersProp(rhs.parametersProp), _cache(0),
+      _isRealized(rhs._isRealized),
+      _effectFilePath(rhs._effectFilePath)
 {
     typedef vector<ref_ptr<Technique> > TechniqueList;
     for (TechniqueList::const_iterator itr = rhs.techniques.begin(),
@@ -287,6 +294,8 @@ Effect::~Effect()
 void buildPass(Effect* effect, Technique* tniq, const SGPropertyNode* prop,
                const SGReaderWriterOptions* options)
 {
+    simgear::ErrorReportContext ec("effect-pass", prop->getPath());
+
     Pass* pass = new Pass;
     tniq->passes.push_back(pass);
     for (int i = 0; i < prop->nChildren(); ++i) {
@@ -837,10 +846,12 @@ void reload_shaders()
         string fileName = SGModelLib::findDataFile(sitr->first.first);
         if (!fileName.empty()) {
             loadShaderFromUTF8File(shader, fileName);
-        }
-        else
+        } else {
             SG_LOG(SG_INPUT, SG_ALERT, "Could not locate shader: " << fileName);
-
+            simgear::reportFailure(simgear::LoadFailure::NotFound,
+                                   simgear::ErrorCode::LoadEffectsShaders,
+                                   "Reload: couldn't find shader:" + sitr->first.first);
+        }
     }
 }
 
@@ -936,10 +947,8 @@ void ShaderProgramBuilder::buildAttribute(Effect* effect, Pass* pass,
         string fileName = SGModelLib::findDataFile(shaderName, options);
         if (fileName.empty())
         {
-            SG_LOG(SG_INPUT, SG_ALERT, "Could not locate shader" << shaderName);
-            if (!compositorEnabled) {
-                reportError("Missing shader", shaderName);
-            }
+            simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadEffectsShaders,
+                                   "Couldn't locate shader:" + shaderName, sg_location{shaderName});
 
             throw BuilderException(string("couldn't find shader ") +
                 shaderName);
@@ -953,7 +962,11 @@ void ShaderProgramBuilder::buildAttribute(Effect* effect, Pass* pass,
         pass->setAttributeAndModes(program);
         return;
     }
-    program = new Program;
+
+    auto sgprogram = new SGProgram;
+    program = sgprogram;
+    sgprogram->setEffectFilePath(effect->filePath());
+
     for (const auto& skey : resolvedKey.shaders) {
         const string& fileName = skey.first;
         Shader::Type stype = (Shader::Type)skey.second;
@@ -964,11 +977,30 @@ void ShaderProgramBuilder::buildAttribute(Effect* effect, Pass* pass,
             ref_ptr<Shader> shader = new Shader(stype);
 			shader->setName(fileName);
             if (loadShaderFromUTF8File(shader, fileName)) {
-                program->addShader(shader.get());
+                if (!program->addShader(shader.get())) {
+                    simgear::reportFailure(simgear::LoadFailure::BadData,
+                                           simgear::ErrorCode::LoadEffectsShaders,
+                                           "Program::addShader failed",
+                                           SGPath::fromUtf8(fileName));
+                }
+
                 shaderMap.insert(ShaderMap::value_type(skey, shader));
+            } else {
+                simgear::reportFailure(simgear::LoadFailure::BadData,
+                                       simgear::ErrorCode::LoadEffectsShaders,
+                                       "Failed to read shader source code",
+                                       SGPath::fromUtf8(fileName));
             }
         }
     }
+
+    if (sgprogram->getNumShaders() == 0) {
+        simgear::reportFailure(simgear::LoadFailure::BadData,
+                               simgear::ErrorCode::LoadEffectsShaders,
+                               "No shader source code defined for effect",
+                               effect->filePath());
+    }
+
     for (const auto& key : prgKey.attributes) {
         program->addBindAttribLocation(key.first, key.second);
     }
@@ -1329,6 +1361,8 @@ InstallAttributeBuilder<DepthBuilder> installDepth("depth");
 void buildTechnique(Effect* effect, const SGPropertyNode* prop,
                     const SGReaderWriterOptions* options)
 {
+    simgear::ErrorReportContext ec("effect-technique", prop->getPath());
+
     Technique* tniq = new Technique;
     effect->techniques.push_back(tniq);
     tniq->setScheme(prop->getStringValue("scheme"));
@@ -1486,16 +1520,19 @@ void mergeSchemesFallbacks(Effect *effect, const SGReaderWriterOptions *options)
 // passes.
 bool Effect::realizeTechniques(const SGReaderWriterOptions* options)
 {
+    simgear::ErrorReportContext ec{"effect", getName()};
+
     if (getPropertyRoot()->getBoolValue("/sim/version/compositor-support", false))
         mergeSchemesFallbacks(this, options);
 
     if (_isRealized)
         return true;
+
     PropertyList tniqList = root->getChildren("technique");
-    for (PropertyList::iterator itr = tniqList.begin(), e = tniqList.end();
-         itr != e;
-         ++itr)
-        buildTechnique(this, *itr, options);
+    for (const auto& tniq : tniqList) {
+        buildTechnique(this, tniq, options);
+    }
+
     _isRealized = true;
     return true;
 }
@@ -1631,3 +1668,15 @@ expression::ExpParserRegistrar propvalueRegistrar("float-property",
                                                  propertyExpressionParser<float>);
 
 }
+
+using namespace simgear;
+
+void Effect::setFilePath(const SGPath& path)
+{
+    _effectFilePath = path;
+}
+
+SGPath Effect::filePath() const
+{
+    return _effectFilePath;
+}

simgear/scene/material/Effect.hxx

@@ -29,10 +29,11 @@
 #include <osg/observer_ptr>
 #include <osgDB/ReaderWriter>
 
+#include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/scene/util/UpdateOnceCallback.hxx>
-#include <simgear/threads/SGThread.hxx>
 #include <simgear/structure/Singleton.hxx>
+#include <simgear/threads/SGThread.hxx>
 
 namespace osg
 {
@@ -106,6 +107,10 @@ public:
 
     std::string getName(){return _name;}
     void setName(std::string name){_name = name;}
+
+    void setFilePath(const SGPath& path);
+    SGPath filePath() const;
+
 protected:
     ~Effect();
     // Support for a cache of effects that inherit from this one, so
@@ -142,10 +147,13 @@ protected:
     Cache* _cache;
     friend size_t hash_value(const Key& key);
     friend Effect* makeEffect(SGPropertyNode* prop, bool realizeTechniques,
-                              const SGReaderWriterOptions* options);
+                              const SGReaderWriterOptions* options,
+                              const SGPath& path);
     bool _isRealized;
     std::string _name;
+    SGPath _effectFilePath;
 };
+
 // Automatic support for boost hash function
 size_t hash_value(const Effect::Key&);
 
@@ -156,7 +164,8 @@ Effect* makeEffect(const std::string& name,
 
 Effect* makeEffect(SGPropertyNode* prop,
                    bool realizeTechniques,
-                   const SGReaderWriterOptions* options);
+                   const SGReaderWriterOptions* options,
+                   const SGPath& path = SGPath{});
 
 bool makeParametersFromStateSet(SGPropertyNode* paramRoot,
                                 const osg::StateSet* ss);

simgear/scene/material/EffectBuilder.cxx

@@ -75,13 +75,13 @@ BuilderException::BuilderException()
 }
 
 BuilderException::BuilderException(const char* message, const char* origin)
-  : sg_exception(message, origin)
+    : sg_exception(message, origin, {}, false)
 {
 }
 
 BuilderException::BuilderException(const std::string& message,
                                    const std::string& origin)
-  : sg_exception(message, origin)
+    : sg_exception(message, origin, {}, false)
 {
 }
 

simgear/scene/material/TextureBuilder.cxx

@@ -39,12 +39,13 @@
 #include <OpenThreads/Mutex>
 #include <OpenThreads/ScopedLock>
 
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/props/vectorPropTemplates.hxx>
 #include <simgear/scene/util/OsgMath.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/SGSceneFeatures.hxx>
 #include <simgear/scene/util/StateAttributeFactory.hxx>
 #include <simgear/structure/OSGUtils.hxx>
-#include <simgear/props/vectorPropTemplates.hxx>
 
 namespace simgear
 {
@@ -280,9 +281,10 @@ bool setAttrs(const TexTuple& attrs, Texture* tex,
     #else
         result = osgDB::readRefImageFile(imageName, options);
     #endif
-    } catch (std::bad_alloc& ba) {
-        SG_LOG(SG_GL, SG_ALERT, "Bad allocation loading:" << imageName);
-        // todo: report low memory warning
+    } catch (std::exception& e) {
+        simgear::reportFailure(simgear::LoadFailure::OutOfMemory, simgear::ErrorCode::LoadingTexture,
+                               string{"osgDB::readRefImageFile failed:"} + e.what(),
+                               SGPath::fromUtf8(imageName));
         return false;
     }
 
@@ -304,6 +306,9 @@ bool setAttrs(const TexTuple& attrs, Texture* tex,
         tex->setMaxAnisotropy(SGSceneFeatures::instance()->getTextureFilter());
     } else {
         SG_LOG(SG_INPUT, SG_ALERT, "failed to load effect texture file " << imageName);
+        simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadingTexture,
+                               "osgDB::readRefImageFile failed:" + result.message(),
+                               SGPath::fromUtf8(imageName));
         return false;
     }
 
@@ -588,8 +593,8 @@ Texture* CubeMapBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode*
     const SGPropertyNode* texturesProp = getEffectPropertyChild(effect, props, "images");
     const SGPropertyNode* crossProp = getEffectPropertyChild(effect, props, "image");
     if (!texturesProp && !crossProp) {
+        simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadingTexture, "No images defined for cube map");
         throw BuilderException("no images defined for cube map");
-        return NULL; // This is redundant
     }
 
     // Using 6 separate images
@@ -770,6 +775,9 @@ Texture* CubeMapBuilder::build(Effect* effect, Pass* pass, const SGPropertyNode*
             return cubeTexture.release();
 
         } else {
+            simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadingTexture,
+                                   "Could not load cube-map image:" + result.message(),
+                                   sg_location{texname});
             throw BuilderException("Could not load cube cross");
         }
     }
@@ -850,6 +858,9 @@ Texture* Texture3DBuilder::build(Effect* effect, Pass* pass,
         tex->setImage(image3d.get());
     } else {
         SG_LOG(SG_INPUT, SG_ALERT, "failed to load effect texture file " << imageName);
+        simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadingTexture,
+                               "osgDB::readRefImageFile failed:" + result.message(),
+                               SGPath::fromUtf8(imageName));
         return NULL;
     }
 

simgear/scene/material/makeEffect.cxx

@@ -25,9 +25,11 @@
 #include <osgDB/ReadFile>
 #include <osgDB/Registry>
 
+#include <simgear/debug/ErrorReportingCallback.hxx>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/scene/util/SGReaderWriterOptions.hxx>
+#include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props_io.hxx>
+#include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/SGSceneFeatures.hxx>
 #include <simgear/scene/util/SplicingVisitor.hxx>
 #include <simgear/structure/SGExpression.hxx>
@@ -126,20 +128,20 @@ Effect* makeEffect(const string& name,
     string absFileName
         = SGModelLib::findDataFile(effectFileName, options);
     if (absFileName.empty()) {
-        SG_LOG(SG_INPUT, SG_ALERT, "can't find \"" << effectFileName << "\"");
-        return 0;
+        simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadEffectsShaders, "Couldn't find Effect:" + effectFileName);
+        return nullptr;
     }
     SGPropertyNode_ptr effectProps = new SGPropertyNode();
     try {
         readProperties(absFileName, effectProps.ptr(), 0, true);
     }
     catch (sg_io_exception& e) {
-        SG_LOG(SG_INPUT, SG_ALERT, "error reading \"" << absFileName << "\": "
-               << e.getFormattedMessage());
-        return 0;
+        simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadEffectsShaders, e.getFormattedMessage(),
+                               e.getLocation());
+        return nullptr;
     }
     ref_ptr<Effect> result = makeEffect(effectProps.ptr(), realizeTechniques,
-                                        options);
+                                        options, SGPath::fromUtf8(absFileName));
     if (result.valid()) {
         OpenThreads::ScopedLock<OpenThreads::ReentrantMutex> lock(effectMutex);
         pair<EffectMap::iterator, bool> irslt
@@ -156,7 +158,8 @@ Effect* makeEffect(const string& name,
 
 Effect* makeEffect(SGPropertyNode* prop,
                    bool realizeTechniques,
-                   const SGReaderWriterOptions* options)
+                   const SGReaderWriterOptions* options,
+                   const SGPath& filePath)
 {
     // Give default names to techniques and passes
     vector<SGPropertyNode_ptr> techniques = prop->getChildren("technique");
@@ -217,6 +220,7 @@ Effect* makeEffect(SGPropertyNode* prop,
             if (!effect.valid()) {
                 effect = new Effect;
                 effect->setName(nameProp->getStringValue());
+                effect->setFilePath(filePath.isNull() ? parent->filePath() : filePath);
                 effect->root = new SGPropertyNode;
                 mergePropertyTrees(effect->root, prop, parent->root);
                 effect->parametersProp = effect->root->getChild("parameters");
@@ -234,12 +238,13 @@ Effect* makeEffect(SGPropertyNode* prop,
                 effect->generator = parent->generator;  // Copy the generators
             }
         } else {
-            SG_LOG(SG_INPUT, SG_ALERT, "can't find base effect " <<
-                   inheritProp->getStringValue());
-            return 0;
+            simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadEffectsShaders,
+                                   string{"couldn't find base effect to inherit from:"} + inheritProp->getStringValue(), filePath);
+            return nullptr;
         }
     } else {
         effect = new Effect;
+        effect->setFilePath(filePath);
         effect->setName(nameProp->getStringValue());
         effect->root = prop;
         effect->parametersProp = effect->root->getChild("parameters");
@@ -266,9 +271,9 @@ Effect* makeEffect(SGPropertyNode* prop,
             effect->realizeTechniques(options);
         }
         catch (BuilderException& e) {
-            SG_LOG(SG_INPUT, SG_ALERT, "Error building technique: "
-                   << e.getFormattedMessage());
-            return 0;
+            simgear::reportFailure(simgear::LoadFailure::Misconfigured, simgear::ErrorCode::LoadEffectsShaders,
+                                   "Failed to build technique:" + e.getFormattedMessage(), filePath);
+            return nullptr;
         }
     }
     return effect.release();

simgear/scene/model/ModelRegistry.cxx

@@ -56,12 +56,15 @@
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/NodeAndDrawableVisitor.hxx>
 
-#include <simgear/structure/exception.hxx>
-#include <simgear/props/props.hxx>
-#include <simgear/props/props_io.hxx>
-#include <simgear/props/condition.hxx>
+
+#include <simgear/debug/ErrorReportingCallback.hxx>
+
 #include <simgear/io/sg_file.hxx>
 #include <simgear/misc/lru_cache.hxx>
+#include <simgear/props/condition.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/props/props_io.hxx>
+#include <simgear/structure/exception.hxx>
 
 #include "BoundingVolumeBuildVisitor.hxx"
 #include "model.hxx"
@@ -289,6 +292,11 @@ ModelRegistry::readImage(const string& fileName,
 
     const SGReaderWriterOptions* sgoptC = dynamic_cast<const SGReaderWriterOptions*>(opt);
 
+    simgear::ErrorReportContext ec;
+    if (sgoptC && sgoptC->getModelData()) {
+        ec.addFromMap(sgoptC->getModelData()->getErrorContext());
+    }
+
     if (cache_active && (!sgoptC || sgoptC->getLoadOriginHint() != SGReaderWriterOptions::LoadOriginHint::ORIGIN_SPLASH_SCREEN)) {
         if (fileExtension != "dds" && fileExtension != "gz") {
 
@@ -549,7 +557,13 @@ ModelRegistry::readImage(const string& fileName,
         }
     }
 
-    res = registry->readImageImplementation(absFileName, opt);
+    try {
+        res = registry->readImageImplementation(absFileName, opt);
+    } catch (std::bad_alloc&) {
+        simgear::reportFailure(simgear::LoadFailure::OutOfMemory, simgear::ErrorCode::ThreeDModelLoad,
+                               "Out of memory loading texture", sg_location{absFileName});
+        return ReaderWriter::ReadResult::INSUFFICIENT_MEMORY_TO_LOAD;
+    }
 
     if (!res.success()) {
         SG_LOG(SG_IO, SG_DEV_WARN, "Image loading failed:" << res.message());
@@ -714,7 +728,17 @@ ReaderWriter::ReadResult
 ModelRegistry::readNode(const string& fileName,
                         const Options* opt)
 {
-    ReaderWriter::ReadResult res;
+    // propogate error context from the caller
+    simgear::ErrorReportContext ec;
+    auto sgopt = dynamic_cast<const SGReaderWriterOptions*>(opt);
+    if (sgopt) {
+        if (sgopt->getModelData()) {
+            ec.addFromMap(sgopt->getModelData()->getErrorContext());
+        }
+
+        ec.addFromMap(sgopt->getErrorContext());
+    }
+
     CallbackMap::iterator iter
         = nodeCallbackMap.find(getFileExtension(fileName));
     ReaderWriter::ReadResult result;
@@ -723,6 +747,11 @@ ModelRegistry::readNode(const string& fileName,
     else
         result = _defaultCallback->readNode(fileName, opt);
 
+    if (!result.validNode()) {
+        simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::ThreeDModelLoad,
+                               "Failed to load 3D model:" + result.message(), sg_location{fileName});
+    }
+
     return result;
 }
 

simgear/scene/model/SGReaderWriterXML.cxx

@@ -35,12 +35,13 @@
 #include <osgDB/FileNameUtils>
 
 #include <simgear/compiler.h>
-#include <simgear/structure/exception.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/props/condition.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
-#include <simgear/props/condition.hxx>
 #include <simgear/scene/util/SGNodeMasks.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
+#include <simgear/structure/exception.hxx>
 
 #include "modellib.hxx"
 #include "SGReaderWriterXML.hxx"
@@ -81,6 +82,7 @@ SGReaderWriterXML::readNode(const std::string& name,
                             const osgDB::Options* options) const
 {
     std::string fileName = osgDB::findDataFile(name, options);
+    simgear::ErrorReportContext ec{"model-xml", fileName};
 
     osg::Node *result=0;
     try {
@@ -262,8 +264,10 @@ sgLoad3DModel_internal(const SGPath& path,
                        SGPropertyNode *overlay)
 {
     if (!path.exists()) {
-      SG_LOG(SG_IO, SG_DEV_ALERT, "Failed to load file: \"" << path << "\"");
-      return std::make_tuple(0, (osg::Node *) NULL);
+        simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::XMLModelLoad,
+                               "Failed to load model XML: not found", path);
+        SG_LOG(SG_IO, SG_DEV_ALERT, "Failed to load file: \"" << path << "\"");
+        return std::make_tuple(0, (osg::Node*)NULL);
     }
 
     osg::ref_ptr<SGReaderWriterOptions> options;
@@ -291,6 +295,8 @@ sgLoad3DModel_internal(const SGPath& path,
        try {
             readProperties(modelpath, props);
         } catch (const sg_exception &t) {
+            simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::XMLModelLoad,
+                                   "Failed to load model XML:" + t.getFormattedMessage(), t.getLocation());
             SG_LOG(SG_IO, SG_DEV_ALERT, "Failed to load xml: "
                    << t.getFormattedMessage());
             throw;
@@ -305,18 +311,24 @@ sgLoad3DModel_internal(const SGPath& path,
         if (props->hasValue("/path")) {
             string modelPathStr = props->getStringValue("/path");
             modelpath = SGModelLib::findDataFile(modelPathStr, NULL, modelDir);
-            if (modelpath.isNull())
+            if (modelpath.isNull()) {
+                simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::ThreeDModelLoad,
+                                       "Model not found:" + modelPathStr, path);
                 throw sg_io_exception("Model file not found: '" + modelPathStr + "'",
-                        path);
+                                      path, {}, false);
+            }
 
             if (props->hasValue("/texture-path")) {
                 string texturePathStr = props->getStringValue("/texture-path");
                 if (!texturePathStr.empty())
                 {
                     texturepath = SGModelLib::findDataFile(texturePathStr, NULL, modelDir);
-                    if (texturepath.isNull())
+                    if (texturepath.isNull()) {
+                        simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadingTexture,
+                                               "Texture file not found:" + texturePathStr, path);
                         throw sg_io_exception("Texture file not found: '" + texturePathStr + "'",
                                 path);
+                    }
                 }
             }
         } else {
@@ -343,9 +355,13 @@ sgLoad3DModel_internal(const SGPath& path,
 #else
         modelResult = osgDB::readRefNodeFile(modelpath.utf8Str(), options.get());
 #endif
-        if (!modelResult.validNode())
+        if (!modelResult.validNode()) {
+            simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::XMLModelLoad,
+                                   "Failed to load 3D model:" + modelResult.message(), modelpath);
             throw sg_io_exception("Failed to load 3D model:" + modelResult.message(),
-                                  modelpath);
+                                  modelpath, {}, false);
+        }
+
         model = copyModel(modelResult.getNode());
         // Add an extra reference to the model stored in the database.
         // That is to avoid expiring the object from the cache even if
@@ -413,6 +429,9 @@ sgLoad3DModel_internal(const SGPath& path,
 
         if (submodelPath.isNull()) {
           SG_LOG(SG_IO, SG_DEV_ALERT, "Failed to load file: \"" << subPathStr << "\"");
+          simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::XMLModelLoad,
+                                 "Couldn't find file for submodel:" + subPathStr,
+                                 SGPath::fromUtf8(subPathStr));
           continue;
         }
 
@@ -425,6 +444,8 @@ sgLoad3DModel_internal(const SGPath& path,
             }
         }
 
+        simgear::ErrorReportContext("submodel", submodelPath.utf8Str());
+
         try {
             int num_anims;
             std::tie(num_anims, submodel) = sgLoad3DModel_internal(submodelPath, options.get(),
@@ -553,13 +574,22 @@ sgLoad3DModel_internal(const SGPath& path,
             } // of object-names in the animation
             continue;
         }
-        /*
-         * Setup the model data for the node currently being animated.
-         */
-        modelData.LoadAnimationValuesForElement(animation_nodes[i], i);
+        
+        try {
+            /*
+             * Setup the model data for the node currently being animated.
+             */
+            modelData.LoadAnimationValuesForElement(animation_nodes[i], i);
 
-        /// OSGFIXME: duh, why not only model?????
-        SGAnimation::animate(modelData);
+            /// OSGFIXME: duh, why not only model?????
+            SGAnimation::animate(modelData);
+        } catch (sg_exception& e) {
+            simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::XMLModelLoad,
+                                   "Couldn't load animation " + animation_nodes[i]->getNameString()
+                                    + ":" + e.getFormattedMessage(),
+                                   modelpath);
+            throw;
+        }
     }
 
     animationcount += animation_nodes.size();

simgear/scene/model/animation.cxx

@@ -39,9 +39,11 @@
 #include <simgear/bvh/BVHGroup.hxx>
 #include <simgear/bvh/BVHLineGeometry.hxx>
 
+#include <simgear/debug/ErrorReportingCallback.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/props/condition.hxx>
 #include <simgear/props/props.hxx>
+
 #include <simgear/scene/material/EffectGeode.hxx>
 #include <simgear/scene/material/EffectCullVisitor.hxx>
 #include <simgear/scene/util/DeletionManager.hxx>
@@ -773,10 +775,16 @@ bool SGAnimation::setCenterAndAxisFromObject(osg::Node *rootNode, SGVec3d& cente
                     object_group->setNodeMask(0);
                 }
                 else {
+                    reportFailure(LoadFailure::Misconfigured, ErrorCode::XMLModelLoad,
+                                  "Could not find valid line segment for axis animation:" + axis_object_name,
+                                  SGPath::fromUtf8(_modelData.getPath()));
                     SG_LOG(SG_IO, SG_DEV_ALERT, "Could not find a valid line segment for animation:  " << axis_object_name << " in file: " << _modelData.getPath());
                 }
             }
             else if (can_warn) {
+                reportFailure(LoadFailure::Misconfigured, ErrorCode::XMLModelLoad,
+                              "Could not find object for axis animation:" + axis_object_name,
+                              SGPath::fromUtf8(_modelData.getPath()));
                 SG_LOG(SG_IO, SG_DEV_ALERT, "Could not find at least one of the following objects for axis animation: " << axis_object_name << " in file: " << _modelData.getPath());
             }
         }

simgear/scene/model/model.cxx

@@ -24,11 +24,12 @@
 #include <simgear/scene/util/SplicingVisitor.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 
-#include <simgear/structure/exception.hxx>
-#include <simgear/structure/Singleton.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/props/condition.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
-#include <simgear/props/condition.hxx>
+#include <simgear/structure/Singleton.hxx>
+#include <simgear/structure/exception.hxx>
 
 #include "model.hxx"
 
@@ -380,6 +381,8 @@ ref_ptr<Node> instantiateMaterialEffects(osg::Node* modelGroup,
       } else {
         effect = DefaultEffect::instance()->getEffect();
         SG_LOG( SG_TERRAIN, SG_ALERT, "Unable to get effect for " << options->getMaterialName());
+        simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::LoadEffectsShaders,
+                               "Unable to get effect for material:" + options->getMaterialName());
       }
     } else {
       effect = DefaultEffect::instance()->getEffect();

simgear/scene/model/modellib.cxx

@@ -29,12 +29,13 @@
 #include <osgDB/Registry>
 
 #include <simgear/constants.h>
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/misc/ResourceManager.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
-#include <simgear/scene/model/model.hxx>
 #include <simgear/scene/model/ModelRegistry.hxx>
+#include <simgear/scene/model/model.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
-#include <simgear/misc/ResourceManager.hxx>
 
 #include "SGReaderWriterXML.hxx"
 
@@ -159,7 +160,6 @@ SGModelLib::loadDeferredModel(const string &path, SGPropertyNode *prop_root,
     proxyNode->setLoadingExternalReferenceMode(osg::ProxyNode::DEFER_LOADING_TO_DATABASE_PAGER);
     proxyNode->setFileName(0, path);
 
-
     osg::ref_ptr<SGReaderWriterOptions> opt;
     opt = SGReaderWriterOptions::copyOrCreate(osgDB::Registry::instance()->getOptions());
     opt->getDatabasePathList().push_front( osgDB::getFilePath(path) );

simgear/scene/model/modellib.hxx

@@ -18,12 +18,9 @@
 #ifndef _SG_MODEL_LIB_HXX
 #define _SG_MODEL_LIB_HXX 1
 
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
 #include <simgear/compiler.h>	// for SG_USING_STD
 
+#include <map>
 #include <string>
 
 #include <osg/Node>
@@ -112,6 +109,10 @@ public:
     virtual void modelLoaded(const std::string& path, SGPropertyNode *prop,
                              osg::Node* branch) = 0;
     virtual SGModelData* clone() const = 0;
+
+    using ErrorContext = std::map<std::string, std::string>;
+
+    virtual ErrorContext getErrorContext() const = 0;
 };
 
 /*

simgear/scene/tgdb/ReaderWriterSTG.cxx

@@ -38,10 +38,12 @@
 #include <osgDB/ReaderWriter>
 #include <osgDB/ReadFile>
 
-#include <simgear/math/sg_random.h>
-#include <simgear/math/SGGeometry.hxx>
 #include <simgear/bucket/newbucket.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
 #include <simgear/debug/logstream.hxx>
+#include <simgear/math/SGGeometry.hxx>
+#include <simgear/math/sg_random.h>
+
 #include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/scene/util/OptionsReadFileCallback.hxx>
 #include <simgear/scene/util/OsgMath.hxx>
@@ -154,7 +156,7 @@ struct ReaderWriterSTG::_ModelBin {
                 proxy->setName("proxyNode");
                 proxy->setLoadingExternalReferenceMode(osg::ProxyNode::DEFER_LOADING_TO_DATABASE_PAGER);
                 proxy->setFileName(0, o._name);
-                proxy->setDatabaseOptions(o._options.get());
+                proxy->setDatabaseOptions(o._options);
 
                 // Give the node some values so the Quadtree builder has
                 // a BoundingBox to work with prior to the model being loaded.
@@ -163,6 +165,7 @@ struct ReaderWriterSTG::_ModelBin {
                 proxy->setCenterMode(osg::ProxyNode::UNION_OF_BOUNDING_SPHERE_AND_USER_DEFINED);
                 node = proxy;
             } else {
+                ErrorReportContext ec("terrain-stg", o._errorLocation.utf8Str());
 #if OSG_VERSION_LESS_THAN(3,4,0)
                 node = osgDB::readNodeFile(o._name, o._options.get());
 #else
@@ -209,6 +212,8 @@ struct ReaderWriterSTG::_ModelBin {
         virtual osgDB::ReaderWriter::ReadResult
         readNode(const std::string&, const osgDB::Options*)
         {
+            ErrorReportContext ec("terrain-bucket", _bucket.gen_index_str());
+
             STGObjectsQuadtree quadtree((GetModelLODCoord()), (AddModelLOD()));
             quadtree.buildQuadTree(_objectStaticList.begin(), _objectStaticList.end());
             osg::ref_ptr<osg::Group> group = quadtree.getRoot();
@@ -465,15 +470,15 @@ struct ReaderWriterSTG::_ModelBin {
 										else
 												opt->setInstantiateEffects(false);
 										_ObjectStatic obj;
-
-										obj._errorLocation = absoluteFileName;
-										obj._token = token;
-										obj._name = name;
-										obj._agl = (token == "OBJECT_STATIC_AGL");
-										obj._proxy = true;
-										in >> obj._lon >> obj._lat >> obj._elev >> obj._hdg >> obj._pitch >> obj._roll;
-										obj._range = range;
-										obj._options = opt;
+                                        opt->addErrorContext("terrain-stg", absoluteFileName.utf8Str());
+                                        obj._errorLocation = absoluteFileName;
+                                        obj._token = token;
+                                        obj._name = name;
+                                        obj._agl = (token == "OBJECT_STATIC_AGL");
+                                        obj._proxy = true;
+                                        in >> obj._lon >> obj._lat >> obj._elev >> obj._hdg >> obj._pitch >> obj._roll;
+                                        obj._range = range;
+                                        obj._options = opt;
                     checkInsideBucket(absoluteFileName, obj._lon, obj._lat);
                     _objectStaticList.push_back(obj);
                 } else if (token == "OBJECT_SHARED" || token == "OBJECT_SHARED_AGL") {
@@ -509,6 +514,8 @@ struct ReaderWriterSTG::_ModelBin {
                     _ObjectStatic obj;
 
                     opt->setInstantiateEffects(false);
+                    opt->addErrorContext("terrain-stg", absoluteFileName.utf8Str());
+
                     if (SGPath(name).lower_extension() == "ac") {
                       // Generate material/Effects lookups for raw models, i.e.
                       // those not wrapped in an XML while will include Effects
@@ -573,7 +580,9 @@ struct ReaderWriterSTG::_ModelBin {
                             }
                             callback(token,name, SGGeod::fromDegM(obj._lon, obj._lat, obj._elev), obj._hdg,restofline);
                         } else {
-                            SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName << ": Unknown token '" << token << "'" );
+                            // SG_LOG( SG_TERRAIN, SG_ALERT, absoluteFileName << ": Unknown token '" << token << "'" );
+                            simgear::reportFailure(simgear::LoadFailure::Misconfigured, simgear::ErrorCode::BTGLoad,
+                                                   "Unknown STG token:" + token, absoluteFileName);
                         }
                     }
                 }
@@ -594,9 +603,13 @@ struct ReaderWriterSTG::_ModelBin {
         std::string terrain_name = string("terrain ").append(bucket.gen_index_str());
         terrainGroup->setName(terrain_name);
 
+        simgear::ErrorReportContext ec{"terrain-bucket", bucket.gen_index_str()};
+
         if (_foundBase) {
             for (auto stgObject : _objectList) {
                 osg::ref_ptr<osg::Node> node;
+                simgear::ErrorReportContext ec("terrain-stg", stgObject._errorLocation.utf8Str());
+
 #if OSG_VERSION_LESS_THAN(3,4,0)
                 node = osgDB::readNodeFile(stgObject._name, stgObject._options.get());
 #else
@@ -621,7 +634,6 @@ struct ReaderWriterSTG::_ModelBin {
                         "Warning: failed to generate ocean tile!" );
             }
         }
-
         for (std::list<_ObjectStatic>::iterator i = _objectStaticList.begin(); i != _objectStaticList.end(); ++i) {
             if (!i->_agl)
                 continue;
@@ -701,6 +713,7 @@ ReaderWriterSTG::readNode(const std::string& fileName, const osgDB::Options* opt
 {
     _ModelBin modelBin;
     SGBucket bucket(bucketIndexFromFileName(fileName));
+    simgear::ErrorReportContext ec("terrain-bucket", bucket.gen_index_str());
 
     // We treat 123.stg different than ./123.stg.
     // The difference is that ./123.stg as well as any absolute path
@@ -708,6 +721,7 @@ ReaderWriterSTG::readNode(const std::string& fileName, const osgDB::Options* opt
     // In contrast 123.stg uses the search paths to load a set of stg
     // files spread across the scenery directories.
     if (osgDB::getSimpleFileName(fileName) != fileName) {
+        simgear::ErrorReportContext ec("terrain-stg", fileName);
         if (!modelBin.read(fileName, options))
             return ReadResult::FILE_NOT_FOUND;
     }
@@ -717,11 +731,10 @@ ReaderWriterSTG::readNode(const std::string& fileName, const osgDB::Options* opt
         return ReadResult::FILE_NOT_FOUND;
     }
 
-    osg::ref_ptr<SGReaderWriterOptions> sgOpts(SGReaderWriterOptions::copyOrCreate(options));
-    if (sgOpts->getSceneryPathSuffixes().empty()) {
+    const auto sgOpts = dynamic_cast<const SGReaderWriterOptions*>(options);
+    if (!sgOpts || sgOpts->getSceneryPathSuffixes().empty()) {
         SG_LOG(SG_TERRAIN, SG_ALERT, "Loading tile " << fileName << ", no scenery path suffixes were configured so giving up");
         return ReadResult::FILE_NOT_FOUND;
-
     }
 
     SG_LOG(SG_TERRAIN, SG_INFO, "Loading tile " << fileName);
@@ -746,7 +759,8 @@ ReaderWriterSTG::readNode(const std::string& fileName, const osgDB::Options* opt
         }
 
         for (auto suffix : sgOpts->getSceneryPathSuffixes()) {
-            SGPath p = base / suffix / basePath / fileName;
+            const auto p = base / suffix / basePath / fileName;
+            simgear::ErrorReportContext ec("terrain-stg", p.utf8Str());
             modelBin.read(p, options);
         }
     }

simgear/scene/tgdb/SGReaderWriterBTG.cxx

@@ -22,6 +22,7 @@
 #include <osgDB/FileNameUtils>
 #include <osgDB/Registry>
 
+#include <simgear/debug/ErrorReportingCallback.hxx>
 #include <simgear/scene/model/ModelRegistry.hxx>
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/structure/exception.hxx>
@@ -62,16 +63,22 @@ SGReaderWriterBTG::readNode(const std::string& fileName,
     const SGReaderWriterOptions* sgOptions;
     sgOptions = dynamic_cast<const SGReaderWriterOptions*>(options);
     osg::Node* result = NULL;
+    simgear::ErrorReportContext ec{"btg", fileName};
     try {
         result = SGLoadBTG(fileName, sgOptions);
         if (!result)
             return ReadResult::FILE_NOT_HANDLED;
     } catch (sg_exception& e) {
-        SG_LOG(SG_IO, SG_WARN, "error reading:" << fileName << ":" <<
-            e.getFormattedMessage());
+        simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::BTGLoad,
+                               "Failed to load BTG file:" + e.getFormattedMessage(),
+                               e.getLocation());
+        return ReadResult::ERROR_IN_READING_FILE;
+    } catch (std::bad_alloc&) {
+        simgear::reportFailure(simgear::LoadFailure::OutOfMemory, simgear::ErrorCode::BTGLoad,
+                               "Out of memory loading BTG:" + fileName, sg_location{fileName});
         return ReadResult::ERROR_IN_READING_FILE;
     }
-    
+
     return result;
 }
 

simgear/scene/tgdb/SGTileDetailsCallback.hxx

@@ -37,6 +37,7 @@
 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
 #include <simgear/scene/util/OptionsReadFileCallback.hxx>
 #include <simgear/scene/util/SGNodeMasks.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
 
 #include "SGNodeTriangles.hxx"
 #include "GroundLightManager.hxx"
@@ -55,9 +56,11 @@ typedef std::list<SGDirectionalLightBin> SGDirectionalLightListBin;
 #define SG_SIMPLIFIER_RATIO         (0.001)
 #define SG_SIMPLIFIER_MAX_LENGTH    (1000.0)
 #define SG_SIMPLIFIER_MAX_ERROR     (2000.0)
-#define SG_TILE_MIN_EXPIRY          (180.0)
+
 using namespace simgear;
 
+using ReadResult = osgDB::ReaderWriter::ReadResult;
+
 // QuadTreeBuilder is used by Random Objects Generator
 typedef std::pair<osg::Node*, int> ModelLOD;
 struct MakeQuadLeaf {
@@ -97,47 +100,59 @@ public:
         SG_LOG( SG_TERRAIN, SG_DEBUG, "SGTileDetailsCallback::~SGTileDetailsCallback() num cbs left " << num_tdcb  );
     }
     
-    virtual osgDB::ReaderWriter::ReadResult readNode(
-        const std::string&, const osgDB::Options*)
+    ReadResult readNode(const std::string&, const osgDB::Options*) override
     {
-        SGMaterialLibPtr matlib;
-        osg::ref_ptr<SGMaterialCache> matcache; 
-        
-        osg::ref_ptr<osg::Group> group = new osg::Group;
-        group->setDataVariance(osg::Object::STATIC);
+        osg::ref_ptr<osg::Group> group;
+        simgear::ErrorReportContext ec{"btg", _path};
 
-        // generate textured triangle list
-        std::vector<SGTriangleInfo> matTris;
-        GetNodeTriangles nodeTris(_gbs_center, &matTris);
-        _rootNode->accept( nodeTris );
+        try {
+            group = new osg::Group;
+            SGMaterialLibPtr matlib;
+            osg::ref_ptr<SGMaterialCache> matcache;             
+            group->setDataVariance(osg::Object::STATIC);
 
-        // build matcache
-        matlib = _options->getMaterialLib();
-        if (matlib) {
-            SGGeod geodPos = SGGeod::fromCart(_gbs_center);            
-            matcache = matlib->generateMatCache(geodPos);
-        }
-        
-#if 0
-        // TEST : See if we can regenerate landclass shapes from node
-        for ( unsigned int i=0; i<matTris.size(); i++ ) {
-            matTris[i].dumpBorder(_gbs_center);
-        }
-#endif
+            // generate textured triangle list
+            std::vector<SGTriangleInfo> matTris;
+            GetNodeTriangles nodeTris(_gbs_center, &matTris);
+            _rootNode->accept( nodeTris );
 
-        osg::Node* node = loadTerrain();
-        if (node) {
-            group->addChild(node);
-        }
+            // build matcache
+            matlib = _options->getMaterialLib();
+            if (matlib) {
+                SGGeod geodPos = SGGeod::fromCart(_gbs_center);            
+                matcache = matlib->generateMatCache(geodPos);
+            }
+            
+    #if 0
+            // TEST : See if we can regenerate landclass shapes from node
+            for ( unsigned int i=0; i<matTris.size(); i++ ) {
+                matTris[i].dumpBorder(_gbs_center);
+            }
+    #endif
 
-        osg::LOD* lightLOD = generateLightingTileObjects(matTris, matcache);
-        if (lightLOD) {
-            group->addChild(lightLOD);
-        }
+            osg::Node* node = loadTerrain();
+            if (node) {
+                group->addChild(node);
+            }
 
-        osg::LOD* objectLOD = generateRandomTileObjects(matTris, matcache);
-        if (objectLOD) {
-            group->addChild(objectLOD);
+            osg::LOD* lightLOD = generateLightingTileObjects(matTris, matcache);
+            if (lightLOD) {
+                group->addChild(lightLOD);
+            }
+
+            osg::LOD* objectLOD = generateRandomTileObjects(matTris, matcache);
+            if (objectLOD) {
+                group->addChild(objectLOD);
+            }
+        } catch (sg_exception& sge) {
+            simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::BTGLoad,
+                                "Failed to load BTG file:" + sge.getFormattedMessage(),
+                                sge.getLocation());
+            return ReadResult::ERROR_IN_READING_FILE;
+        } catch (std::bad_alloc &e) {
+            simgear::reportFailure(simgear::LoadFailure::OutOfMemory, simgear::ErrorCode::BTGLoad,
+                                "Out of memory loading tile details", sg_location{_path});
+            return ReadResult::INSUFFICIENT_MEMORY_TO_LOAD;
         }
         
         return group.release();

simgear/scene/util/CMakeLists.txt

@@ -31,6 +31,7 @@ set(HEADERS
     UpdateOnceCallback.hxx
     VectorArrayAdapter.hxx
     project.hxx
+    SGProgram.hxx
     )
 
 set(SOURCES
@@ -55,6 +56,7 @@ set(SOURCES
     StateAttributeFactory.cxx
     UpdateOnceCallback.cxx
     project.cxx
+    SGProgram.cxx
     )
 
 simgear_scene_component(util scene/util "${SOURCES}" "${HEADERS}")

simgear/scene/util/SGProgram.cxx

@@ -0,0 +1,83 @@
+////
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+// Boston, MA  02110-1301, USA.
+
+
+#include "simgear_config.h"
+
+#include "SGProgram.hxx"
+
+#include <osg/State>
+#include <sstream>
+
+#include <simgear/debug/ErrorReportingCallback.hxx>
+#include <simgear/debug/logstream.hxx>
+
+SGProgram::SGProgram()
+{
+}
+
+SGProgram::SGProgram(const SGProgram& rhs, const osg::CopyOp& copyop) : osg::Program(rhs, copyop),
+                                                                        _effectFilePath(rhs._effectFilePath)
+{
+}
+
+void SGProgram::setEffectFilePath(const SGPath& p)
+{
+    _effectFilePath = p;
+}
+
+void SGProgram::apply(osg::State& state) const
+{
+    osg::Program::apply(state);
+
+    if (_checkState != NotApplied) {
+        return; // already done
+    }
+
+    auto pcp = state.getLastAppliedProgramObject();
+    if (!pcp) {
+        std::string infoLog;
+        _checkState = FailedToApply;
+        getPCP(state)->getInfoLog(infoLog);
+        if (!infoLog.empty()) {
+            // log all the shader source file names, to help in debugging link errors
+            std::ostringstream os;
+            for (int i = 0; i < getNumShaders(); ++i) {
+                const auto shader = getShader(i);
+                os << "\t" << shader->getFileName() << "\n";
+            }
+
+            simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadEffectsShaders,
+                                   "Shader program errors: " + infoLog +
+                                       "\n\nShader sources:\n" + os.str(),
+                                   _effectFilePath);
+        }
+
+        for (int i = 0; i < getNumShaders(); ++i) {
+            const auto shader = getShader(i);
+            auto pcs = shader->getPCS(state);
+
+            std::string shaderLog;
+            pcs->getInfoLog(shaderLog);
+            if (!shaderLog.empty()) {
+                simgear::reportFailure(simgear::LoadFailure::BadData, simgear::ErrorCode::LoadEffectsShaders,
+                                       "Shader source errors: " + shaderLog, sg_location(shader->getFileName()));
+            }
+        }
+    } else {
+        _checkState = AppliedOk;
+    }
+}

simgear/scene/util/SGProgram.hxx

@@ -0,0 +1,50 @@
+////
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+// Boston, MA  02110-1301, USA.
+
+#pragma once
+
+#include <osg/Program>
+
+#include <simgear/misc/sg_path.hxx>
+
+/**
+ * @brief wrapper around osg::Program to allow detecting shader/link
+ * errors in the GLSL code at runtime, and reporting of them
+ * 
+ */
+class SGProgram : public osg::Program
+{
+public:
+    SGProgram();
+
+    SGProgram(const SGProgram& rhs, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
+
+    META_StateAttribute(simgear, SGProgram, PROGRAM);
+
+    void apply(osg::State& state) const override;
+
+    enum ErrorCheckState {
+        NotApplied,
+        AppliedOk,
+        FailedToApply
+    };
+
+    void setEffectFilePath(const SGPath& p);
+
+private:
+    SGPath _effectFilePath;
+    mutable ErrorCheckState _checkState = NotApplied;
+};

simgear/scene/util/SGReaderWriterOptions.cxx

@@ -17,9 +17,7 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
-#ifdef HAVE_CONFIG_H
-#  include <simgear_config.h>
-#endif
+#include <simgear_config.h>
 
 #include <simgear/scene/util/OsgMath.hxx>
 
@@ -54,4 +52,10 @@ SGReaderWriterOptions::fromPath(const SGPath& path)
     return options;
 }
 
+void SGReaderWriterOptions::addErrorContext(const std::string& key, const std::string& value)
+{
+    _errorContext[key] = value;
 }
+
+
+} // namespace simgear

simgear/scene/util/SGReaderWriterOptions.hxx

@@ -76,12 +76,11 @@ public:
         _LoadOriginHint(ORIGIN_MODEL)
     { }
     SGReaderWriterOptions(const SGReaderWriterOptions& options,
-                          const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY) :
-        osgDB::Options(options, copyop),
-        _propertyNode(options._propertyNode),
-        _materialLib(options._materialLib),
+                          const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY) : osgDB::Options(options, copyop),
+                                                                                   _propertyNode(options._propertyNode),
+                                                                                   _materialLib(options._materialLib),
 #ifdef ENABLE_GDAL
-        _dem(options._dem),
+                                                                                   _dem(options._dem),
 #endif
         _load_panel(options._load_panel),
         _model_data(options._model_data),
@@ -89,7 +88,8 @@ public:
         _instantiateMaterialEffects(options._instantiateMaterialEffects),
         _materialName(options._materialName),
         _sceneryPathSuffixes(options._sceneryPathSuffixes),
-        _LoadOriginHint(ORIGIN_MODEL)
+        _LoadOriginHint(ORIGIN_MODEL),
+        _errorContext(options._errorContext)
     { }
 
     META_Object(simgear, SGReaderWriterOptions);
@@ -158,7 +158,16 @@ public:
     // any texture that is used in a shader, as these often have special values
     // encoded into the channels that aren't suitable for conversion.
     void setLoadOriginHint(LoadOriginHint _v) const { _LoadOriginHint = _v; } 
-    LoadOriginHint getLoadOriginHint() const { return _LoadOriginHint; } 
+    LoadOriginHint getLoadOriginHint() const { return _LoadOriginHint; }
+
+    using ErrorContext = std::map<std::string, std::string>;
+
+    void addErrorContext(const std::string& key, const std::string& value);
+
+    ErrorContext getErrorContext() const
+    {
+        return _errorContext;
+    }
 
 protected:
     virtual ~SGReaderWriterOptions();
@@ -179,6 +188,7 @@ private:
     string_list _sceneryPathSuffixes;
     SGGeod _geod;
     mutable LoadOriginHint _LoadOriginHint;
+    ErrorContext _errorContext;
 };
 
 }

simgear/sound/readwav.cxx

@@ -32,6 +32,7 @@
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/stdint.hxx>
 #include <simgear/structure/exception.hxx>
+#include <simgear/debug/ErrorReportingCallback.hxx>
 
 #include "sample.hxx"
 
@@ -56,7 +57,7 @@ namespace
     }
   };
   
-  unsigned int formatConstruct(ALint numChannels, ALint bitsPerSample, bool compressed)
+  unsigned int formatConstruct(ALint numChannels, ALint bitsPerSample, bool compressed, const SGPath& path)
   {
     unsigned int rv = 0;
     if (!compressed) {
@@ -67,7 +68,7 @@ namespace
       else {
         char msg[81];
         snprintf(msg, 80, "Unsupported audio format: tracks: %i, bits/sample: %i", numChannels, bitsPerSample);
-        throw sg_exception(msg);
+          throw sg_exception(msg, {}, path, false);
       }
     } else {
       if (numChannels == 1 && bitsPerSample == 4) rv = SG_SAMPLE_ADPCM; 
@@ -75,7 +76,7 @@ namespace
       else {
         char msg[81];
         snprintf(msg, 80, "Unsupported compressed audio format: tracks: %i, bits/sample: %i", numChannels, bitsPerSample);
-        throw sg_exception(msg);
+          throw sg_exception(msg, {}, path, false);
       }
     }
     return rv;
@@ -275,29 +276,29 @@ namespace
     Codec *codec = codecLinear;
 
     if (!wavReadBE(fd, magic))
-      throw sg_io_exception("corrupt or truncated WAV data", b->path);
+        throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
     
     if (magic != WAV_RIFF_4CC) {
-      throw sg_io_exception("not a .wav file", b->path);
+      throw sg_io_exception("not a .wav file", b->path, {}, false);
     }
 
     if (!wavReadLE(fd, chunkLength) || !wavReadBE(fd, magic))
-      throw sg_io_exception("corrupt or truncated WAV data", b->path);
+      throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
 
     if (magic != WAV_WAVE_4CC)      /* "WAVE" */
     {
-        throw sg_io_exception("unrecognized WAV magic", b->path);
+        throw sg_io_exception("unrecognized WAV magic", b->path, {}, false);
     }
 
     while (1) {
         if (!wavReadBE(fd, magic) || !wavReadLE(fd, chunkLength))
-            throw sg_io_exception("corrupt or truncated WAV data", b->path);
+            throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
 
         if (magic == WAV_FORMAT_4CC)  /* "fmt " */
         {
             found_header = true;
             if (chunkLength < 16) {
-              throw sg_io_exception("corrupt or truncated WAV data", b->path);
+              throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
             }
 
             if (!wavReadLE (fd, audioFormat) ||
@@ -307,11 +308,11 @@ namespace
                 !wavReadLE (fd, blockAlign) ||
                 !wavReadLE (fd, bitsPerSample))
             {
-                throw sg_io_exception("corrupt or truncated WAV data", b->path);
+                throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
             }
 
             if (!gzSkip(fd, chunkLength - 16))
-                throw sg_io_exception("corrupt or truncated WAV data", b->path);
+                throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
 
             switch (audioFormat)
               {
@@ -340,33 +341,33 @@ namespace
                 }
                 break;
               default:
-                throw sg_io_exception("unsupported WAV encoding", b->path);
+                throw sg_io_exception("unsupported WAV encoding:" + std::to_string(audioFormat), b->path, {}, false);
               }
               
               b->block_align = blockAlign;
               b->frequency = samplesPerSecond;
-              b->format = formatConstruct(numChannels, bitsPerSample, compressed);
+              b->format = formatConstruct(numChannels, bitsPerSample, compressed, b->path);
         } else if (magic == WAV_DATA_4CC) {
             if (!found_header) {
                 /* ToDo: A bit wrong to check here, fmt chunk could come later... */
-                throw sg_io_exception("corrupt or truncated WAV data", b->path);
+                throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
             }
             
             b->data = malloc(chunkLength);
             b->length = chunkLength;
             size_t read = gzread(fd, b->data, chunkLength);
             if (read != chunkLength) {
-                throw sg_io_exception("insufficent data reading WAV file", b->path);
+                throw sg_io_exception("insufficent data reading WAV file", b->path, {}, false);
             }
             
             break;
         } else {
             if (!gzSkip(fd, chunkLength))
-              throw sg_io_exception("corrupt or truncated WAV data", b->path);
+              throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
         }
 
         if ((chunkLength & 1) && !gzeof(fd) && !gzSkip(fd, 1))
-          throw sg_io_exception("corrupt or truncated WAV data", b->path);
+          throw sg_io_exception("corrupt or truncated WAV data", b->path, {}, false);
       } // of file chunk parser loop
       
       codec(b); // might throw if something really bad occurs
@@ -380,7 +381,7 @@ namespace simgear
 ALvoid* loadWAVFromFile(const SGPath& path, unsigned int& format, ALsizei& size, ALfloat& freqf, unsigned int& block_align)
 {
   if (!path.exists()) {
-    SG_LOG(SG_IO, SG_DEV_ALERT, "loadWAVFromFile: file not found:" << path);
+      simgear::reportFailure(simgear::LoadFailure::NotFound, simgear::ErrorCode::AudioFX, "loadWAVFromFile: not found", path);
     return nullptr;
   }
 
@@ -396,14 +397,15 @@ ALvoid* loadWAVFromFile(const SGPath& path, unsigned int& format, ALsizei& size,
   fd = gzopen(ps.c_str(), "rb");
 #endif
   if (!fd) {
-    SG_LOG(SG_IO, SG_DEV_ALERT, "loadWAVFromFile: unable to open file:" << path);
+      simgear::reportFailure(simgear::LoadFailure::IOError, simgear::ErrorCode::AudioFX, "loadWAVFromFile: unable to open file", path);
     return nullptr;
   }
 
   try {
       loadWavFile(fd, &b);
   } catch (sg_exception& e) {
-      SG_LOG(SG_IO, SG_DEV_ALERT, "loadWAVFromFile:" << e.getFormattedMessage() << "\nfor: " << path);
+      simgear::reportFailure(simgear::LoadFailure::IOError, simgear::ErrorCode::AudioFX, "loadWAVFromFile: unable to read file:"
+                             + e.getFormattedMessage(), e.getLocation());
       return nullptr;
   }
 

simgear/structure/subsystem_mgr.cxx

@@ -250,10 +250,15 @@ void
 SGSubsystemGroup::init ()
 {
     assert(_state == State::BIND);
-    forEach([this](SGSubsystem* s){
-        this->notifyWillChange(s, State::INIT);
-        s->init();
-        this->notifyDidChange(s, State::INIT);
+    forEach([this](SGSubsystem* s) {
+        try {
+            this->notifyWillChange(s, State::INIT);
+            s->init();
+            this->notifyDidChange(s, State::INIT);
+        } catch (std::exception& e) {
+            simgear::reportError("Caught exception init-ing subsystem " + s->subsystemId() + "\n\t" + e.what());
+            throw;
+        }
     });
     _state = State::INIT;
 }
@@ -283,7 +288,15 @@ SGSubsystemGroup::incrementalInit()
     const auto m = _members[_initPosition]; 
     SGTimeStamp st;
     st.stamp();
-    const InitStatus memberStatus = m->subsystem->incrementalInit();
+    InitStatus memberStatus;
+
+    try {
+        memberStatus = m->subsystem->incrementalInit();
+    } catch (std::exception& e) {
+        simgear::reportError("Caught exception init-ing subsystem " + m->subsystem->subsystemId() + "\n\t" + e.what());
+        throw;
+    }
+
     m->initTime += st.elapsedMSec();
   
     if (memberStatus == INIT_DONE) {
@@ -351,10 +364,15 @@ SGSubsystemGroup::shutdown ()
 void
 SGSubsystemGroup::bind ()
 {
-    forEach([this](SGSubsystem* s){
-        this->notifyWillChange(s, State::BIND);
-        s->bind();
-        this->notifyDidChange(s, State::BIND);
+    forEach([this](SGSubsystem* s) {
+        try {
+            this->notifyWillChange(s, State::BIND);
+            s->bind();
+            this->notifyDidChange(s, State::BIND);
+        } catch (std::exception& e) {
+            simgear::reportError("Caught exception binding subsystem " + s->subsystemId() + "\n\t" + e.what());
+            throw;
+        }
     });
     _state = State::BIND;
 }

simgear/xml/easyxml.cxx

@@ -244,40 +244,43 @@ readXML (istream &input, XMLVisitor &visitor, const string &path)
 
 				// FIXME: get proper error string from system
     if (!input.good()) {
-      sg_io_exception ex ("Problem reading file",
-			    sg_location(path,
-					XML_GetCurrentLineNumber(parser),
-					XML_GetCurrentColumnNumber(parser)),
-			    "SimGear XML Parser");
-      visitor.setParser(0);
-      XML_ParserFree(parser);
-      throw ex;
+        sg_io_exception ex("Problem reading file",
+                           sg_location(path,
+                                       XML_GetCurrentLineNumber(parser),
+                                       XML_GetCurrentColumnNumber(parser)),
+                           "SimGear XML Parser",
+                           false /* don't report */);
+        visitor.setParser(0);
+        XML_ParserFree(parser);
+        throw ex;
     }
 
     input.read(buf,16384);
     if (!XML_Parse(parser, buf, input.gcount(), false)) {
-      sg_io_exception ex (XML_ErrorString(XML_GetErrorCode(parser)),
-			    sg_location(path,
-					XML_GetCurrentLineNumber(parser),
-					XML_GetCurrentColumnNumber(parser)),
-			    "SimGear XML Parser");
-      visitor.setParser(0);
-      XML_ParserFree(parser);
-      throw ex;
+        sg_io_exception ex(XML_ErrorString(XML_GetErrorCode(parser)),
+                           sg_location(path,
+                                       XML_GetCurrentLineNumber(parser),
+                                       XML_GetCurrentColumnNumber(parser)),
+                           "SimGear XML Parser",
+                           false /* don't report */);
+        visitor.setParser(0);
+        XML_ParserFree(parser);
+        throw ex;
     }
 
   }
 
 				// Verify end of document.
   if (!XML_Parse(parser, buf, 0, true)) {
-    sg_io_exception ex (XML_ErrorString(XML_GetErrorCode(parser)),
-			  sg_location(path,
-				      XML_GetCurrentLineNumber(parser),
-				      XML_GetCurrentColumnNumber(parser)),
-			  "SimGear XML Parser");
-    visitor.setParser(0);
-    XML_ParserFree(parser);
-    throw ex;
+      sg_io_exception ex(XML_ErrorString(XML_GetErrorCode(parser)),
+                         sg_location(path,
+                                     XML_GetCurrentLineNumber(parser),
+                                     XML_GetCurrentColumnNumber(parser)),
+                         "SimGear XML Parser",
+                         false /* don't report */);
+      visitor.setParser(0);
+      XML_ParserFree(parser);
+      throw ex;
   }
 
   visitor.setParser(0);
@@ -300,8 +303,8 @@ readXML (const SGPath &path, XMLVisitor &visitor)
       throw;
     }
   } else {
-    throw sg_io_exception("Failed to open file", sg_location(path),
-			  "SimGear XML Parser");
+      throw sg_io_exception("Failed to open file", sg_location(path),
+                            "SimGear XML Parser", false /* don't report */);
   }
   input.close();
 }
@@ -318,11 +321,12 @@ readXML (const char *buf, const int size, XMLVisitor &visitor)
   visitor.startXML();
 
   if (!XML_Parse(parser, buf, size, false)) {
-      sg_io_exception ex (XML_ErrorString(XML_GetErrorCode(parser)),
-			    sg_location("In-memory XML buffer",
-					XML_GetCurrentLineNumber(parser),
-					XML_GetCurrentColumnNumber(parser)),
-			    "SimGear XML Parser");
+      sg_io_exception ex(XML_ErrorString(XML_GetErrorCode(parser)),
+                         sg_location("In-memory XML buffer",
+                                     XML_GetCurrentLineNumber(parser),
+                                     XML_GetCurrentColumnNumber(parser)),
+                         "SimGear XML Parser",
+                         false /* don't report */);
       XML_ParserFree(parser);
       throw ex;
   }

version

@@ -1 +0,0 @@
-2020.3.8