asiva@google.com
a02f310d91
--trace-zone and trace-handles Review URL: https://codereview.chromium.org//11879005 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@17001 260f80e4-7a28-3924-810f-c04153c831b5
127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/handles.h"
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#include "platform/assert.h"
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#include "platform/utils.h"
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#include "vm/flags.h"
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#include "vm/isolate.h"
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#include "vm/os.h"
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#include "vm/raw_object.h"
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#include "vm/visitor.h"
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#include "vm/zone.h"
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#include "vm/handles_impl.h"
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namespace dart {
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DEFINE_FLAG(bool, verify_handles, false, "Verify handles.");
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DEFINE_DEBUG_FLAG(bool, trace_handles,
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false, "Traces allocation of handles.");
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VMHandles::~VMHandles() {
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#ifdef DEBUG
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if (FLAG_trace_handles) {
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OS::PrintErr("*** Handle Counts for 0x(%"Px"):Zone = %d,Scoped = %d\n",
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reinterpret_cast<intptr_t>(this),
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CountZoneHandles(), CountScopedHandles());
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OS::PrintErr("*** Deleting VM handle block 0x%"Px"\n",
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reinterpret_cast<intptr_t>(this));
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}
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#endif
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}
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void VMHandles::VisitObjectPointers(ObjectPointerVisitor* visitor) {
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return Handles<kVMHandleSizeInWords,
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kVMHandlesPerChunk,
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kOffsetOfRawPtr>::VisitObjectPointers(visitor);
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}
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uword VMHandles::AllocateHandle(Isolate* isolate) {
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return Handles<kVMHandleSizeInWords,
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kVMHandlesPerChunk,
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kOffsetOfRawPtr>::AllocateHandle(isolate);
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}
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uword VMHandles::AllocateZoneHandle(Isolate* isolate) {
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return Handles<kVMHandleSizeInWords,
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kVMHandlesPerChunk,
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kOffsetOfRawPtr>::AllocateZoneHandle(isolate);
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}
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bool VMHandles::IsZoneHandle(uword handle) {
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return Handles<kVMHandleSizeInWords,
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kVMHandlesPerChunk,
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kOffsetOfRawPtr >::IsZoneHandle(handle);
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}
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int VMHandles::ScopedHandleCount() {
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Isolate* isolate = Isolate::Current();
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ASSERT(isolate->current_zone() != NULL);
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VMHandles* handles = isolate->current_zone()->handles();
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return handles->CountScopedHandles();
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}
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int VMHandles::ZoneHandleCount() {
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Isolate* isolate = Isolate::Current();
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ASSERT(isolate->current_zone() != NULL);
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VMHandles* handles = isolate->current_zone()->handles();
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return handles->CountZoneHandles();
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}
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HandleScope::HandleScope(BaseIsolate* isolate) : StackResource(isolate) {
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ASSERT(isolate->no_handle_scope_depth() == 0);
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VMHandles* handles = isolate->current_zone()->handles();
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ASSERT(handles != NULL);
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saved_handle_block_ = handles->scoped_blocks_;
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saved_handle_slot_ = handles->scoped_blocks_->next_handle_slot();
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#if defined(DEBUG)
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link_ = isolate->top_handle_scope();
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isolate->set_top_handle_scope(this);
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#endif
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}
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HandleScope::~HandleScope() {
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ASSERT(isolate()->current_zone() != NULL);
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VMHandles* handles = isolate()->current_zone()->handles();
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ASSERT(handles != NULL);
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handles->scoped_blocks_ = saved_handle_block_;
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handles->scoped_blocks_->set_next_handle_slot(saved_handle_slot_);
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#if defined(DEBUG)
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handles->VerifyScopedHandleState();
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handles->ZapFreeScopedHandles();
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ASSERT(isolate()->top_handle_scope() == this);
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isolate()->set_top_handle_scope(link_);
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#endif
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}
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#if defined(DEBUG)
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NoHandleScope::NoHandleScope(BaseIsolate* isolate) : StackResource(isolate) {
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isolate->IncrementNoHandleScopeDepth();
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}
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NoHandleScope::NoHandleScope() : StackResource(Isolate::Current()) {
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isolate()->IncrementNoHandleScopeDepth();
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}
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NoHandleScope::~NoHandleScope() {
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isolate()->DecrementNoHandleScopeDepth();
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}
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#endif // defined(DEBUG)
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} // namespace dart
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