123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596 |
- // Copyright 2017 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/threading/scoped_blocking_call.h"
- #include "base/lazy_instance.h"
- #include "base/threading/thread_local.h"
- #include "base/threading/thread_restrictions.h"
- #include "base/time/time.h"
- #include "base/trace_event/base_tracing.h"
- #include "base/tracing_buildflags.h"
- #include "build/build_config.h"
- #if BUILDFLAG(ENABLE_BASE_TRACING)
- #include "third_party/perfetto/protos/perfetto/trace/track_event/source_location.pbzero.h" // nogncheck
- #endif // BUILDFLAG(ENABLE_BASE_TRACING)
- namespace base {
- namespace {
- #if DCHECK_IS_ON()
- // Used to verify that the trace events used in the constructor do not result in
- // instantiating a ScopedBlockingCall themselves (which would cause an infinite
- // reentrancy loop).
- LazyInstance<ThreadLocalBoolean>::Leaky tls_construction_in_progress =
- LAZY_INSTANCE_INITIALIZER;
- #endif
- } // namespace
- ScopedBlockingCall::ScopedBlockingCall(const Location& from_here,
- BlockingType blocking_type)
- : UncheckedScopedBlockingCall(
- from_here,
- blocking_type,
- UncheckedScopedBlockingCall::BlockingCallType::kRegular) {
- #if DCHECK_IS_ON()
- DCHECK(!tls_construction_in_progress.Get().Get());
- tls_construction_in_progress.Get().Set(true);
- #endif
- internal::AssertBlockingAllowed();
- TRACE_EVENT_BEGIN(
- "base", "ScopedBlockingCall", [&](perfetto::EventContext ctx) {
- ctx.event()->set_source_location_iid(
- base::trace_event::InternedSourceLocation::Get(&ctx, from_here));
- });
- #if DCHECK_IS_ON()
- tls_construction_in_progress.Get().Set(false);
- #endif
- }
- ScopedBlockingCall::~ScopedBlockingCall() {
- TRACE_EVENT_END("base");
- }
- namespace internal {
- ScopedBlockingCallWithBaseSyncPrimitives::
- ScopedBlockingCallWithBaseSyncPrimitives(const Location& from_here,
- BlockingType blocking_type)
- : UncheckedScopedBlockingCall(
- from_here,
- blocking_type,
- UncheckedScopedBlockingCall::BlockingCallType::kBaseSyncPrimitives) {
- #if DCHECK_IS_ON()
- DCHECK(!tls_construction_in_progress.Get().Get());
- tls_construction_in_progress.Get().Set(true);
- #endif
- internal::AssertBaseSyncPrimitivesAllowed();
- TRACE_EVENT_BEGIN(
- "base", "ScopedBlockingCallWithBaseSyncPrimitives",
- [&](perfetto::EventContext ctx) {
- perfetto::protos::pbzero::SourceLocation* source_location_data =
- ctx.event()->set_source_location();
- source_location_data->set_file_name(from_here.file_name());
- source_location_data->set_function_name(from_here.function_name());
- });
- #if DCHECK_IS_ON()
- tls_construction_in_progress.Get().Set(false);
- #endif
- }
- ScopedBlockingCallWithBaseSyncPrimitives::
- ~ScopedBlockingCallWithBaseSyncPrimitives() {
- TRACE_EVENT_END("base");
- }
- } // namespace internal
- } // namespace base
|