crashpad/util/synchronization/semaphore_posix.cc
Mark Mentovai 50ed179e9a Use BUILDFLAG for OS checking
Use BUILDFLAG(IS_*) instead of defined(OS_*).

This was generated mostly mechnically by performing the following steps:
 - sed -i '' -E -e 's/defined\(OS_/BUILDFLAG(IS_/g' \
                -e 's%([ !])OS_([A-Z]+)%\1BUILDFLAG(IS_\2)%g' \
       $(git grep -l 'OS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - sed -i '' -e 's/#ifdef BUILDFLAG(/#if BUILDFLAG(/' \
       $(git grep -l '#ifdef BUILDFLAG('
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - gsed -i -z -E -e \
       's%(.*)#include "%\1#include "build/buildflag.h"\n#include "%' \
       $(git grep -l 'BUILDFLAG(IS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - Spot checks to move #include "build/buildflag.h" to the correct parts
   of files.
 - sed -i '' -E -e \
       's%^(#include "build/buildflag.h")$%#include "build/build_config.h"\n\1%' \
       $(grep -L '^#include "build/build_config.h"$'
         $(git grep -l 'BUILDFLAG(IS_'
           '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'))
 - Add “clang-format off” around tool usage messages.
 - git cl format
 - Update mini_chromium to 85ba51f98278 (intermediate step).
   TESTING ONLY).
 - for f in $(git grep -l '^#include "build/buildflag.h"$'
              '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'); do \
       grep -v '^#include "build/buildflag.h"$' "${f}" > /tmp/z; \
       cp /tmp/z "${f}"; done
 - git cl format
 - Update mini_chromium to 735143774c5f (intermediate step).
 - Update mini_chromium to f41420eb45fa (as checked in).
 - Update mini_chromium to 6e2f204b4ae1 (as checked in).

For ease of review and inspection, each of these steps is uploaded as a
new patch set in a review series.

This includes an update of mini_chromium to 6e2f204b4ae1:

f41420eb45fa Use BUILDFLAG for OS checking
6e2f204b4ae1 Include what you use: string_util.h uses build_config.h

Bug: chromium:1234043
Change-Id: Ieef86186f094c64e59b853729737e36982f8cf69
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3400258
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-01-19 20:21:19 +00:00

111 lines
2.6 KiB
C++

// Copyright 2014 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/synchronization/semaphore.h"
#include <errno.h>
#include <math.h>
#include <time.h>
#include <chrono>
#include "base/check_op.h"
#include "base/logging.h"
#include "base/posix/eintr_wrapper.h"
#include "build/build_config.h"
#include "util/misc/time.h"
namespace crashpad {
#if BUILDFLAG(IS_ANDROID)
Semaphore::Semaphore(int value) : cv_(), mutex_(), value_(value) {}
Semaphore::~Semaphore() = default;
void Semaphore::Wait() {
std::unique_lock<std::mutex> lock(mutex_);
cv_.wait(lock, [this] { return this->value_ > 0; });
--value_;
}
bool Semaphore::TimedWait(double seconds) {
DCHECK_GE(seconds, 0.0);
if (isinf(seconds)) {
Wait();
return true;
}
std::unique_lock<std::mutex> lock(mutex_);
if (!cv_.wait_for(lock, std::chrono::duration<double>(seconds), [this] {
return this->value_ > 0;
})) {
return false;
}
--value_;
return true;
}
void Semaphore::Signal() {
std::lock_guard<std::mutex> lock(mutex_);
++value_;
cv_.notify_one();
}
#elif !BUILDFLAG(IS_APPLE)
Semaphore::Semaphore(int value) {
PCHECK(sem_init(&semaphore_, 0, value) == 0) << "sem_init";
}
Semaphore::~Semaphore() {
PCHECK(sem_destroy(&semaphore_) == 0) << "sem_destroy";
}
void Semaphore::Wait() {
PCHECK(HANDLE_EINTR(sem_wait(&semaphore_)) == 0) << "sem_wait";
}
bool Semaphore::TimedWait(double seconds) {
DCHECK_GE(seconds, 0.0);
if (isinf(seconds)) {
Wait();
return true;
}
timespec current_time;
if (clock_gettime(CLOCK_REALTIME, &current_time) != 0) {
PLOG(ERROR) << "clock_gettime";
return false;
}
timespec timeout;
timeout.tv_sec = seconds;
timeout.tv_nsec = (seconds - trunc(seconds)) * 1E9;
AddTimespec(current_time, timeout, &timeout);
int rv = HANDLE_EINTR(sem_timedwait(&semaphore_, &timeout));
PCHECK(rv == 0 || errno == ETIMEDOUT) << "sem_timedwait";
return rv == 0;
}
void Semaphore::Signal() {
PCHECK(sem_post(&semaphore_) == 0) << "sem_post";
}
#endif // BUILDFLAG(IS_ANDROID)
} // namespace crashpad