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137 lines
4.8 KiB
137 lines
4.8 KiB
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_TRACE_EVENT_HEAP_PROFILER_H
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#define BASE_TRACE_EVENT_HEAP_PROFILER_H
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// Replace with stub implementation.
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#if 1
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#define TRACE_HEAP_PROFILER_API_SCOPED_TASK_EXECUTION \
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trace_event_internal::HeapProfilerScopedTaskExecutionTracker
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namespace trace_event_internal {
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class HeapProfilerScopedTaskExecutionTracker {
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public:
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explicit HeapProfilerScopedTaskExecutionTracker(const char*) {}
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};
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} // namespace trace_event_internal
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#else
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#include "base/compiler_specific.h"
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#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
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// This header file defines the set of macros that are used to track memory
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// usage in the heap profiler. This is in addition to the macros defined in
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// trace_event.h and are specific to heap profiler. This file also defines
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// implementation details of these macros.
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// Implementation detail: heap profiler macros create temporary variables to
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// keep instrumentation overhead low. These macros give each temporary variable
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// a unique name based on the line number to prevent name collisions.
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#define INTERNAL_HEAP_PROFILER_UID3(a, b) heap_profiler_unique_##a##b
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#define INTERNAL_HEAP_PROFILER_UID2(a, b) INTERNAL_HEAP_PROFILER_UID3(a, b)
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#define INTERNAL_HEAP_PROFILER_UID(name_prefix) \
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INTERNAL_HEAP_PROFILER_UID2(name_prefix, __LINE__)
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// Scoped tracker for task execution context in the heap profiler.
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#define TRACE_HEAP_PROFILER_API_SCOPED_TASK_EXECUTION \
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trace_event_internal::HeapProfilerScopedTaskExecutionTracker
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// Scoped tracker that tracks the given program counter as a native stack frame
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// in the heap profiler.
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#define TRACE_HEAP_PROFILER_API_SCOPED_WITH_PROGRAM_COUNTER \
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trace_event_internal::HeapProfilerScopedStackFrame
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// A scoped ignore event used to tell heap profiler to ignore all the
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// allocations in the scope. It is useful to exclude allocations made for
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// tracing from the heap profiler dumps.
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#define HEAP_PROFILER_SCOPED_IGNORE \
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trace_event_internal::HeapProfilerScopedIgnore INTERNAL_HEAP_PROFILER_UID( \
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scoped_ignore)
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namespace trace_event_internal {
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// HeapProfilerScopedTaskExecutionTracker records the current task's context in
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// the heap profiler.
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class HeapProfilerScopedTaskExecutionTracker {
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public:
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inline explicit HeapProfilerScopedTaskExecutionTracker(
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const char* task_context)
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: context_(task_context) {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(AllocationContextTracker::capture_mode() !=
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AllocationContextTracker::CaptureMode::DISABLED)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->PushCurrentTaskContext(context_);
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}
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}
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inline ~HeapProfilerScopedTaskExecutionTracker() {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(AllocationContextTracker::capture_mode() !=
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AllocationContextTracker::CaptureMode::DISABLED)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->PopCurrentTaskContext(context_);
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}
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}
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private:
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const char* context_;
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};
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class HeapProfilerScopedStackFrame {
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public:
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inline explicit HeapProfilerScopedStackFrame(const void* program_counter)
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: program_counter_(program_counter) {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(AllocationContextTracker::capture_mode() ==
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AllocationContextTracker::CaptureMode::MIXED_STACK)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->PushNativeStackFrame(program_counter_);
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}
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}
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inline ~HeapProfilerScopedStackFrame() {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(AllocationContextTracker::capture_mode() ==
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AllocationContextTracker::CaptureMode::MIXED_STACK)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->PopNativeStackFrame(program_counter_);
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}
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}
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private:
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const void* const program_counter_;
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};
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class BASE_EXPORT HeapProfilerScopedIgnore {
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public:
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inline HeapProfilerScopedIgnore() {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(
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AllocationContextTracker::capture_mode() !=
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AllocationContextTracker::CaptureMode::DISABLED)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->begin_ignore_scope();
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}
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}
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inline ~HeapProfilerScopedIgnore() {
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using base::trace_event::AllocationContextTracker;
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if (UNLIKELY(
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AllocationContextTracker::capture_mode() !=
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AllocationContextTracker::CaptureMode::DISABLED)) {
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AllocationContextTracker::GetInstanceForCurrentThread()
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->end_ignore_scope();
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}
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}
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};
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} // namespace trace_event_internal
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#endif
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#endif // BASE_TRACE_EVENT_HEAP_PROFILER_H
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