89 lines
2.8 KiB
C++
89 lines
2.8 KiB
C++
// Copyright 2017 The Chromium Authors
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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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#include "base/threading/scoped_blocking_call.h"
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#include "base/lazy_instance.h"
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#include "base/threading/thread_local.h"
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#include "base/threading/thread_restrictions.h"
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#include "base/time/time.h"
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#include "base/trace_event/base_tracing.h"
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#include "base/tracing_buildflags.h"
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#include "build/build_config.h"
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#if BUILDFLAG(ENABLE_BASE_TRACING)
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#include "third_party/perfetto/protos/perfetto/trace/track_event/source_location.pbzero.h" // nogncheck
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#endif // BUILDFLAG(ENABLE_BASE_TRACING)
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#if DCHECK_IS_ON()
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#include "base/auto_reset.h"
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#include "third_party/abseil-cpp/absl/base/attributes.h"
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#endif
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namespace base {
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namespace {
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#if DCHECK_IS_ON()
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// Used to verify that the trace events used in the constructor do not result in
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// instantiating a ScopedBlockingCall themselves (which would cause an infinite
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// reentrancy loop).
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ABSL_CONST_INIT thread_local bool construction_in_progress = false;
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#endif
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} // namespace
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ScopedBlockingCall::ScopedBlockingCall(const Location& from_here,
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BlockingType blocking_type)
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: UncheckedScopedBlockingCall(
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blocking_type,
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UncheckedScopedBlockingCall::BlockingCallType::kRegular) {
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#if DCHECK_IS_ON()
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const AutoReset<bool> resetter(&construction_in_progress, true, false);
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#endif
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internal::AssertBlockingAllowed();
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TRACE_EVENT_BEGIN(
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"base", "ScopedBlockingCall", [&](perfetto::EventContext ctx) {
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ctx.event()->set_source_location_iid(
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base::trace_event::InternedSourceLocation::Get(&ctx, from_here));
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});
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}
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ScopedBlockingCall::~ScopedBlockingCall() {
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TRACE_EVENT_END("base");
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}
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namespace internal {
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ScopedBlockingCallWithBaseSyncPrimitives::
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ScopedBlockingCallWithBaseSyncPrimitives(const Location& from_here,
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BlockingType blocking_type)
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: UncheckedScopedBlockingCall(
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blocking_type,
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UncheckedScopedBlockingCall::BlockingCallType::kBaseSyncPrimitives) {
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#if DCHECK_IS_ON()
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const AutoReset<bool> resetter(&construction_in_progress, true, false);
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#endif
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internal::AssertBaseSyncPrimitivesAllowed();
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TRACE_EVENT_BEGIN(
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"base", "ScopedBlockingCallWithBaseSyncPrimitives",
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[&](perfetto::EventContext ctx) {
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perfetto::protos::pbzero::SourceLocation* source_location_data =
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ctx.event()->set_source_location();
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source_location_data->set_file_name(from_here.file_name());
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source_location_data->set_function_name(from_here.function_name());
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});
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}
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ScopedBlockingCallWithBaseSyncPrimitives::
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~ScopedBlockingCallWithBaseSyncPrimitives() {
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TRACE_EVENT_END("base");
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}
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} // namespace internal
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} // namespace base
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