diff options
Diffstat (limited to 'src/gc/gcee.cpp')
| -rw-r--r-- | src/gc/gcee.cpp | 226 |
1 files changed, 15 insertions, 211 deletions
diff --git a/src/gc/gcee.cpp b/src/gc/gcee.cpp index d37eaf4de9..c93cc91b57 100644 --- a/src/gc/gcee.cpp +++ b/src/gc/gcee.cpp @@ -148,7 +148,7 @@ void GCHeap::UpdatePostGCCounters() // if a max gen garbage collection was performed, resync the GC Handle counter; // if threads are currently suspended, we do not need to obtain a lock on each handle table if (condemned_gen == max_generation) - total_num_gc_handles = HndCountAllHandles(!GCHeap::IsGCInProgress()); + total_num_gc_handles = HndCountAllHandles(!IsGCInProgress()); #endif //FEATURE_REDHAWK // per generation calculation. @@ -381,209 +381,6 @@ size_t GCHeap::GetNow() return GetHighPrecisionTimeStamp(); } -void ProfScanRootsHelper(Object** ppObject, ScanContext *pSC, uint32_t dwFlags) -{ -#if defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) - Object *pObj = *ppObject; -#ifdef INTERIOR_POINTERS - if (dwFlags & GC_CALL_INTERIOR) - { - uint8_t *o = (uint8_t*)pObj; - gc_heap* hp = gc_heap::heap_of (o); - - if ((o < hp->gc_low) || (o >= hp->gc_high)) - { - return; - } - pObj = (Object*) hp->find_object(o, hp->gc_low); - } -#endif //INTERIOR_POINTERS - ScanRootsHelper(pObj, ppObject, pSC, dwFlags); -#endif // defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) -} - -// TODO - at some point we would like to completely decouple profiling -// from ETW tracing using a pattern similar to this, where the -// ProfilingScanContext has flags about whether or not certain things -// should be tracked, and each one of these ProfilerShouldXYZ functions -// will check these flags and determine what to do based upon that. -// GCProfileWalkHeapWorker can, in turn, call those methods without fear -// of things being ifdef'd out. - -// Returns TRUE if GC profiling is enabled and the profiler -// should scan dependent handles, FALSE otherwise. -BOOL ProfilerShouldTrackConditionalWeakTableElements() -{ -#if defined(GC_PROFILING) - return CORProfilerTrackConditionalWeakTableElements(); -#else - return FALSE; -#endif // defined (GC_PROFILING) -} - -// If GC profiling is enabled, informs the profiler that we are done -// tracing dependent handles. -void ProfilerEndConditionalWeakTableElementReferences(void* heapId) -{ -#if defined (GC_PROFILING) - g_profControlBlock.pProfInterface->EndConditionalWeakTableElementReferences(heapId); -#else - UNREFERENCED_PARAMETER(heapId); -#endif // defined (GC_PROFILING) -} - -// If GC profiling is enabled, informs the profiler that we are done -// tracing root references. -void ProfilerEndRootReferences2(void* heapId) -{ -#if defined (GC_PROFILING) - g_profControlBlock.pProfInterface->EndRootReferences2(heapId); -#else - UNREFERENCED_PARAMETER(heapId); -#endif // defined (GC_PROFILING) -} - -// This is called only if we've determined that either: -// a) The Profiling API wants to do a walk of the heap, and it has pinned the -// profiler in place (so it cannot be detached), and it's thus safe to call into the -// profiler, OR -// b) ETW infrastructure wants to do a walk of the heap either to log roots, -// objects, or both. -// This can also be called to do a single walk for BOTH a) and b) simultaneously. Since -// ETW can ask for roots, but not objects -#if defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) - -void GCProfileWalkHeapWorker(BOOL fProfilerPinned, BOOL fShouldWalkHeapRootsForEtw, BOOL fShouldWalkHeapObjectsForEtw) -{ - { - ProfilingScanContext SC(fProfilerPinned); - - // **** Scan roots: Only scan roots if profiling API wants them or ETW wants them. - if (fProfilerPinned || fShouldWalkHeapRootsForEtw) - { -#ifdef MULTIPLE_HEAPS - int hn; - - // Must emulate each GC thread number so we can hit each - // heap for enumerating the roots. - for (hn = 0; hn < gc_heap::n_heaps; hn++) - { - // Ask the vm to go over all of the roots for this specific - // heap. - gc_heap* hp = gc_heap::g_heaps [hn]; - SC.thread_number = hn; - GCScan::GcScanRoots(&ProfScanRootsHelper, max_generation, max_generation, &SC); - - // The finalizer queue is also a source of roots - SC.dwEtwRootKind = kEtwGCRootKindFinalizer; - hp->finalize_queue->GcScanRoots(&ProfScanRootsHelper, hn, &SC); - } -#else - // Ask the vm to go over all of the roots - GCScan::GcScanRoots(&ProfScanRootsHelper, max_generation, max_generation, &SC); - - // The finalizer queue is also a source of roots - SC.dwEtwRootKind = kEtwGCRootKindFinalizer; - pGenGCHeap->finalize_queue->GcScanRoots(&ProfScanRootsHelper, 0, &SC); - -#endif // MULTIPLE_HEAPS - // Handles are kept independent of wks/svr/concurrent builds - SC.dwEtwRootKind = kEtwGCRootKindHandle; - GCScan::GcScanHandlesForProfilerAndETW(max_generation, &SC); - - // indicate that regular handle scanning is over, so we can flush the buffered roots - // to the profiler. (This is for profapi only. ETW will flush after the - // entire heap was is complete, via ETW::GCLog::EndHeapDump.) - if (fProfilerPinned) - { - ProfilerEndRootReferences2(&SC.pHeapId); - } - } - - // **** Scan dependent handles: only if the profiler supports it or ETW wants roots - if ((fProfilerPinned && ProfilerShouldTrackConditionalWeakTableElements()) || - fShouldWalkHeapRootsForEtw) - { - // GcScanDependentHandlesForProfiler double-checks - // CORProfilerTrackConditionalWeakTableElements() before calling into the profiler - - GCScan::GcScanDependentHandlesForProfilerAndETW(max_generation, &SC); - - // indicate that dependent handle scanning is over, so we can flush the buffered roots - // to the profiler. (This is for profapi only. ETW will flush after the - // entire heap was is complete, via ETW::GCLog::EndHeapDump.) - if (fProfilerPinned && ProfilerShouldTrackConditionalWeakTableElements()) - { - ProfilerEndConditionalWeakTableElementReferences(&SC.pHeapId); - } - } - - ProfilerWalkHeapContext profilerWalkHeapContext(fProfilerPinned, SC.pvEtwContext); - - // **** Walk objects on heap: only if profiling API wants them or ETW wants them. - if (fProfilerPinned || fShouldWalkHeapObjectsForEtw) - { -#ifdef MULTIPLE_HEAPS - int hn; - - // Walk the heap and provide the objref to the profiler - for (hn = 0; hn < gc_heap::n_heaps; hn++) - { - gc_heap* hp = gc_heap::g_heaps [hn]; - hp->walk_heap(&HeapWalkHelper, &profilerWalkHeapContext, max_generation, TRUE /* walk the large object heap */); - } -#else - gc_heap::walk_heap(&HeapWalkHelper, &profilerWalkHeapContext, max_generation, TRUE); -#endif //MULTIPLE_HEAPS - } - -#ifdef FEATURE_EVENT_TRACE - // **** Done! Indicate to ETW helpers that the heap walk is done, so any buffers - // should be flushed into the ETW stream - if (fShouldWalkHeapObjectsForEtw || fShouldWalkHeapRootsForEtw) - { - ETW::GCLog::EndHeapDump(&profilerWalkHeapContext); - } -#endif // FEATURE_EVENT_TRACE - } -} -#endif // defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) - -void GCProfileWalkHeap() -{ - BOOL fWalkedHeapForProfiler = FALSE; - -#ifdef FEATURE_EVENT_TRACE - if (ETW::GCLog::ShouldWalkStaticsAndCOMForEtw()) - ETW::GCLog::WalkStaticsAndCOMForETW(); - - BOOL fShouldWalkHeapRootsForEtw = ETW::GCLog::ShouldWalkHeapRootsForEtw(); - BOOL fShouldWalkHeapObjectsForEtw = ETW::GCLog::ShouldWalkHeapObjectsForEtw(); -#else // !FEATURE_EVENT_TRACE - BOOL fShouldWalkHeapRootsForEtw = FALSE; - BOOL fShouldWalkHeapObjectsForEtw = FALSE; -#endif // FEATURE_EVENT_TRACE - -#if defined (GC_PROFILING) - { - BEGIN_PIN_PROFILER(CORProfilerTrackGC()); - GCProfileWalkHeapWorker(TRUE /* fProfilerPinned */, fShouldWalkHeapRootsForEtw, fShouldWalkHeapObjectsForEtw); - fWalkedHeapForProfiler = TRUE; - END_PIN_PROFILER(); - } -#endif // defined (GC_PROFILING) - -#if defined (GC_PROFILING) || defined(FEATURE_EVENT_TRACE) - // we need to walk the heap if one of GC_PROFILING or FEATURE_EVENT_TRACE - // is defined, since both of them make use of the walk heap worker. - if (!fWalkedHeapForProfiler && - (fShouldWalkHeapRootsForEtw || fShouldWalkHeapObjectsForEtw)) - { - GCProfileWalkHeapWorker(FALSE /* fProfilerPinned */, fShouldWalkHeapRootsForEtw, fShouldWalkHeapObjectsForEtw); - } -#endif // defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) -} - BOOL GCHeap::IsGCInProgressHelper (BOOL bConsiderGCStart) { return GcInProgress || (bConsiderGCStart? VolatileLoad(&gc_heap::gc_started) : FALSE); @@ -782,11 +579,11 @@ void gc_heap::background_gc_wait_lh (alloc_wait_reason awr) /******************************************************************************/ -::GCHeap* CreateGCHeap() { +IGCHeapInternal* CreateGCHeap() { return new(nothrow) GCHeap(); // we return wks or svr } -void GCHeap::TraceGCSegments() +void GCHeap::DiagTraceGCSegments() { #ifdef FEATURE_EVENT_TRACE heap_segment* seg = 0; @@ -823,16 +620,16 @@ void GCHeap::TraceGCSegments() #endif // FEATURE_EVENT_TRACE } -#if defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) -void GCHeap::DescrGenerationsToProfiler (gen_walk_fn fn, void *context) +void GCHeap::DiagDescrGenerations (gen_walk_fn fn, void *context) { +#if defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) pGenGCHeap->descr_generations_to_profiler(fn, context); -} #endif // defined(GC_PROFILING) || defined(FEATURE_EVENT_TRACE) +} -#ifdef FEATURE_BASICFREEZE segment_handle GCHeap::RegisterFrozenSegment(segment_info *pseginfo) { +#ifdef FEATURE_BASICFREEZE heap_segment * seg = new (nothrow) heap_segment; if (!seg) { @@ -863,10 +660,15 @@ segment_handle GCHeap::RegisterFrozenSegment(segment_info *pseginfo) } return reinterpret_cast< segment_handle >(seg); +#else + assert(!"Should not call GCHeap::RegisterFrozenSegment without FEATURE_BASICFREEZE defined!"); + return NULL; +#endif // FEATURE_BASICFREEZE } void GCHeap::UnregisterFrozenSegment(segment_handle seg) { +#ifdef FEATURE_BASICFREEZE #if defined (MULTIPLE_HEAPS) && !defined (ISOLATED_HEAPS) gc_heap* heap = gc_heap::g_heaps[0]; #else @@ -874,8 +676,10 @@ void GCHeap::UnregisterFrozenSegment(segment_handle seg) #endif //MULTIPLE_HEAPS && !ISOLATED_HEAPS heap->remove_ro_segment(reinterpret_cast<heap_segment*>(seg)); -} +#else + assert(!"Should not call GCHeap::UnregisterFrozenSegment without FEATURE_BASICFREEZE defined!"); #endif // FEATURE_BASICFREEZE +} #endif // !DACCESS_COMPILE |