chromium/base/threading/scoped_blocking_call.cc

// Copyright 2017 The Chromium Authors
// 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)

#if DCHECK_IS_ON()
#include "base/auto_reset.h"
#include "third_party/abseil-cpp/absl/base/attributes.h"
#endif

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).
ABSL_CONST_INIT thread_local bool construction_in_progress = …;
#endif

}  // namespace

ScopedBlockingCall::ScopedBlockingCall(const Location& from_here,
                                       BlockingType blocking_type)
    : … { … }

ScopedBlockingCall::~ScopedBlockingCall() { … }

namespace internal {

ScopedBlockingCallWithBaseSyncPrimitives::
    ScopedBlockingCallWithBaseSyncPrimitives(const Location& from_here,
                                             BlockingType blocking_type)
    : … { … }

ScopedBlockingCallWithBaseSyncPrimitives::
    ~ScopedBlockingCallWithBaseSyncPrimitives() { … }

}  // namespace internal

}  // namespace base