public unsafe int BuildForEnc(object pUpdatePE)
{
try
{
log.Write("Applying changes to {0}", _vsProject.DisplayName);
Debug.Assert(_encService.EditSession != null);
Debug.Assert(!_encService.EditSession.StoppedAtException);
// Non-debuggable project has no changes.
Debug.Assert(IsDebuggable);
if (_changesApplied)
{
log.Write("Changes already applied to {0}, can't apply again", _vsProject.DisplayName);
throw ExceptionUtilities.Unreachable;
}
// The debugger always calls GetENCBuildState right before BuildForEnc.
Debug.Assert(_projectBeingEmitted != null);
Debug.Assert(_lastEditSessionSummary == GetProjectAnalysisSummary(_projectBeingEmitted));
// The debugger should have called GetENCBuildState before calling BuildForEnc.
// Unfortunately, there is no way how to tell the debugger that the changes were not significant,
// so we'll to emit an empty delta. See bug 839558.
Debug.Assert(_lastEditSessionSummary == ProjectAnalysisSummary.ValidInsignificantChanges ||
_lastEditSessionSummary == ProjectAnalysisSummary.ValidChanges);
var updater = (IDebugUpdateInMemoryPE2)pUpdatePE;
if (_committedBaseline == null)
{
var hr = MarshalPdbReader(updater, out _pdbReaderObjAsStream);
if (hr != VSConstants.S_OK)
{
return hr;
}
_committedBaseline = EmitBaseline.CreateInitialBaseline(_metadata, GetBaselineEncDebugInfo);
}
// ISymUnmanagedReader can only be accessed from an MTA thread,
// so dispatch it to one of thread pool threads, which are MTA.
var emitTask = Task.Factory.SafeStartNew(EmitProjectDelta, CancellationToken.None, TaskScheduler.Default);
Deltas delta;
using (NonReentrantContext)
{
delta = emitTask.Result;
if (delta == null)
{
// Non-fatal Watson has already been reported by the emit task
return VSConstants.E_FAIL;
}
}
var errorId = new EncErrorId(_encService.DebuggingSession, EditAndContinueDiagnosticUpdateSource.EmitErrorId);
// Clear diagnostics, in case the project was built before and failed due to errors.
_diagnosticProvider.ClearDiagnostics(errorId, _projectBeingEmitted.Solution, _vsProject.Id, _documentsWithEmitError);
if (!delta.EmitResult.Success)
{
var errors = delta.EmitResult.Diagnostics.Where(d => d.Severity == DiagnosticSeverity.Error);
_documentsWithEmitError = _diagnosticProvider.ReportDiagnostics(errorId, _projectBeingEmitted.Solution, _vsProject.Id, errors);
_encService.EditSession.LogEmitProjectDeltaErrors(errors.Select(e => e.Id));
return VSConstants.E_FAIL;
}
_documentsWithEmitError = ImmutableArray<DocumentId>.Empty;
SetFileUpdates(updater, delta.LineEdits);
updater.SetDeltaIL(delta.IL.Value, (uint)delta.IL.Value.Length);
updater.SetDeltaPdb(SymUnmanagedStreamFactory.CreateStream(delta.Pdb.Stream));
updater.SetRemapMethods(delta.Pdb.UpdatedMethods, (uint)delta.Pdb.UpdatedMethods.Length);
updater.SetDeltaMetadata(delta.Metadata.Bytes, (uint)delta.Metadata.Bytes.Length);
_pendingBaseline = delta.EmitResult.Baseline;
#if DEBUG
fixed (byte* deltaMetadataPtr = &delta.Metadata.Bytes[0])
{
var reader = new System.Reflection.Metadata.MetadataReader(deltaMetadataPtr, delta.Metadata.Bytes.Length);
var moduleDef = reader.GetModuleDefinition();
log.DebugWrite("Gen {0}: MVID={1}, BaseId={2}, EncId={3}",
moduleDef.Generation,
reader.GetGuid(moduleDef.Mvid),
reader.GetGuid(moduleDef.BaseGenerationId),
reader.GetGuid(moduleDef.GenerationId));
}
#endif
return VSConstants.S_OK;
}
catch (Exception e) when (FatalError.ReportWithoutCrash(e))
{
return VSConstants.E_FAIL;
}
}
public int StopDebuggingPE()
{
try
{
log.Write("Exit Debug Mode: project '{0}'", _vsProject.DisplayName);
Debug.Assert(s_breakStateEnteredProjects.Count == 0);
// Clear the solution stored while projects were entering break mode.
// It should be cleared as soon as all tracked projects enter the break mode
// but if the entering break mode fails for some projects we should avoid leaking the solution.
Debug.Assert(s_breakStateEntrySolution == null);
s_breakStateEntrySolution = null;
// EnC service is global (per solution), but the debugger calls this for each project.
// Avoid ending the debug session if it has already been ended.
if (_encService.DebuggingSession != null)
{
_encService.OnBeforeDebuggingStateChanged(DebuggingState.Run, DebuggingState.Design);
_encService.EndDebuggingSession();
LogEncSession();
s_encDebuggingSessionInfo = null;
s_readOnlyDocumentTracker.Dispose();
s_readOnlyDocumentTracker = null;
}
if (_metadata != null)
{
_metadata.Dispose();
_metadata = null;
s_debugStateProjectCount--;
}
else
{
// an error might have been reported:
var errorId = new EncErrorId(_encService.DebuggingSession, EditAndContinueDiagnosticUpdateSource.DebuggerErrorId);
_diagnosticProvider.ClearDiagnostics(errorId, _vsProject.Workspace.CurrentSolution, _vsProject.Id, documentIdOpt: null);
}
_activeMethods = null;
_exceptionRegions = null;
_committedBaseline = null;
_activeStatementIds = null;
_projectBeingEmitted = null;
Debug.Assert((_pdbReaderObjAsStream == IntPtr.Zero) || (_pdbReader == null));
if (_pdbReader != null)
{
Marshal.ReleaseComObject(_pdbReader);
_pdbReader = null;
}
// The HResult is ignored by the debugger.
return VSConstants.S_OK;
}
catch (Exception e) when (FatalError.ReportWithoutCrash(e))
{
return VSConstants.E_FAIL;
}
}
