
This change removes #includes of base/strings/string16.h from the codebase. Bug: 1184339 Change-Id: I3b29dd94c6955d01029d24f88177b755863c865d Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2756167 Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org> Owners-Override: Jan Wilken Dörrie <jdoerrie@chromium.org> Auto-Submit: Jan Wilken Dörrie <jdoerrie@chromium.org> Reviewed-by: Peter Kasting <pkasting@chromium.org> Cr-Commit-Position: refs/heads/master@{#862683}
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
// Copyright 2019 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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#include "content/public/common/profiling_utils.h"
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#include <limits>
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#include <memory>
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#include <string>
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#include "base/base_paths.h"
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#include "base/bind.h"
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#include "base/callback_forward.h"
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#include "base/clang_profiling_buildflags.h"
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#include "base/environment.h"
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#include "base/files/file.h"
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#include "base/files/file_path.h"
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#include "base/files/file_util.h"
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#include "base/guid.h"
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#include "base/logging.h"
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#include "base/path_service.h"
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#include "base/rand_util.h"
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#include "base/run_loop.h"
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#include "base/strings/strcat.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/synchronization/waitable_event.h"
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#include "base/task/task_traits.h"
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#include "base/task/thread_pool.h"
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#include "base/threading/thread_restrictions.h"
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#include "build/build_config.h"
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namespace content {
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base::File OpenProfilingFile() {
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base::ScopedAllowBlockingForTesting allows_blocking;
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std::unique_ptr<base::Environment> env(base::Environment::Create());
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std::string prof_template;
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base::FilePath path;
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if (env->GetVar("LLVM_PROFILE_FILE", &prof_template)) {
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#if defined(OS_WIN)
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path = base::FilePath(base::UTF8ToWide(prof_template)).DirName();
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#else
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path = base::FilePath(prof_template).DirName();
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#endif
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base::CreateDirectory(path);
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} else {
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base::PathService::Get(base::DIR_CURRENT, &path);
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}
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// sajjadm@ and liaoyuke@ experimentally determined that a size 4 pool works
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// well for the coverage builder.
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// TODO(https://crbug.com/1059335): Check if this is an appropriate value for
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// the PGO builds.
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int pool_index = base::RandInt(0, 3);
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std::string filename = base::StrCat(
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{"child_pool-", base::NumberToString(pool_index), ".profraw"});
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#if defined(OS_WIN)
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path = path.Append(base::UTF8ToWide(filename));
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#else
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path = path.Append(filename);
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#endif
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uint32_t flags = base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_READ |
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base::File::FLAG_WRITE;
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base::File file(path, flags);
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if (!file.IsValid()) {
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LOG(ERROR) << "Opening file: " << path << " failed with "
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<< file.error_details();
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}
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return file;
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}
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WaitForProcessesToDumpProfilingInfo::WaitForProcessesToDumpProfilingInfo() =
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default;
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WaitForProcessesToDumpProfilingInfo::~WaitForProcessesToDumpProfilingInfo() =
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default;
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void WaitForProcessesToDumpProfilingInfo::WaitForAll() {
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base::RunLoop nested_run_loop(base::RunLoop::Type::kNestableTasksAllowed);
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// Some of the waitable events will be signaled on the main thread, use a
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// nested run loop to ensure we're not preventing them from signaling.
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base::ThreadPool::PostTask(
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FROM_HERE, {base::MayBlock(), base::TaskShutdownBehavior::BLOCK_SHUTDOWN},
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base::BindOnce(
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&WaitForProcessesToDumpProfilingInfo::WaitForAllOnThreadPool,
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base::Unretained(this), nested_run_loop.QuitClosure()));
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nested_run_loop.Run();
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}
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void WaitForProcessesToDumpProfilingInfo::WaitForAllOnThreadPool(
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base::OnceClosure quit_closure) {
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base::ScopedAllowBaseSyncPrimitivesOutsideBlockingScope allow_blocking;
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std::vector<base::WaitableEvent*> events_raw;
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events_raw.reserve(events_.size());
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for (const auto& iter : events_)
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events_raw.push_back(iter.get());
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// Wait for all the events to be signaled.
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while (events_raw.size()) {
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size_t index =
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base::WaitableEvent::WaitMany(events_raw.data(), events_raw.size());
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events_raw.erase(events_raw.begin() + index);
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}
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std::move(quit_closure).Run();
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}
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base::WaitableEvent*
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WaitForProcessesToDumpProfilingInfo::GetNewWaitableEvent() {
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events_.push_back(std::make_unique<base::WaitableEvent>());
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return events_.back().get();
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}
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} // namespace content
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