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-rw-r--r--security/sandbox/chromium/base/synchronization/condition_variable_posix.cc137
1 files changed, 0 insertions, 137 deletions
diff --git a/security/sandbox/chromium/base/synchronization/condition_variable_posix.cc b/security/sandbox/chromium/base/synchronization/condition_variable_posix.cc
deleted file mode 100644
index d86fd180e..000000000
--- a/security/sandbox/chromium/base/synchronization/condition_variable_posix.cc
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright (c) 2011 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/synchronization/condition_variable.h"
-
-#include <errno.h>
-#include <stdint.h>
-#include <sys/time.h>
-
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_restrictions.h"
-#include "base/time/time.h"
-#include "build/build_config.h"
-
-namespace base {
-
-ConditionVariable::ConditionVariable(Lock* user_lock)
- : user_mutex_(user_lock->lock_.native_handle())
-#if DCHECK_IS_ON()
- , user_lock_(user_lock)
-#endif
-{
- int rv = 0;
- // http://crbug.com/293736
- // NaCl doesn't support monotonic clock based absolute deadlines.
- // On older Android platform versions, it's supported through the
- // non-standard pthread_cond_timedwait_monotonic_np. Newer platform
- // versions have pthread_condattr_setclock.
- // Mac can use relative time deadlines.
-#if !defined(OS_MACOSX) && !defined(OS_NACL) && \
- !(defined(OS_ANDROID) && defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC))
- pthread_condattr_t attrs;
- rv = pthread_condattr_init(&attrs);
- DCHECK_EQ(0, rv);
- pthread_condattr_setclock(&attrs, CLOCK_MONOTONIC);
- rv = pthread_cond_init(&condition_, &attrs);
- pthread_condattr_destroy(&attrs);
-#else
- rv = pthread_cond_init(&condition_, NULL);
-#endif
- DCHECK_EQ(0, rv);
-}
-
-ConditionVariable::~ConditionVariable() {
-#if defined(OS_MACOSX)
- // This hack is necessary to avoid a fatal pthreads subsystem bug in the
- // Darwin kernel. http://crbug.com/517681.
- {
- base::Lock lock;
- base::AutoLock l(lock);
- struct timespec ts;
- ts.tv_sec = 0;
- ts.tv_nsec = 1;
- pthread_cond_timedwait_relative_np(&condition_, lock.lock_.native_handle(),
- &ts);
- }
-#endif
-
- int rv = pthread_cond_destroy(&condition_);
- DCHECK_EQ(0, rv);
-}
-
-void ConditionVariable::Wait() {
- base::ThreadRestrictions::AssertWaitAllowed();
-#if DCHECK_IS_ON()
- user_lock_->CheckHeldAndUnmark();
-#endif
- int rv = pthread_cond_wait(&condition_, user_mutex_);
- DCHECK_EQ(0, rv);
-#if DCHECK_IS_ON()
- user_lock_->CheckUnheldAndMark();
-#endif
-}
-
-void ConditionVariable::TimedWait(const TimeDelta& max_time) {
- base::ThreadRestrictions::AssertWaitAllowed();
- int64_t usecs = max_time.InMicroseconds();
- struct timespec relative_time;
- relative_time.tv_sec = usecs / Time::kMicrosecondsPerSecond;
- relative_time.tv_nsec =
- (usecs % Time::kMicrosecondsPerSecond) * Time::kNanosecondsPerMicrosecond;
-
-#if DCHECK_IS_ON()
- user_lock_->CheckHeldAndUnmark();
-#endif
-
-#if defined(OS_MACOSX)
- int rv = pthread_cond_timedwait_relative_np(
- &condition_, user_mutex_, &relative_time);
-#else
- // The timeout argument to pthread_cond_timedwait is in absolute time.
- struct timespec absolute_time;
-#if defined(OS_NACL)
- // See comment in constructor for why this is different in NaCl.
- struct timeval now;
- gettimeofday(&now, NULL);
- absolute_time.tv_sec = now.tv_sec;
- absolute_time.tv_nsec = now.tv_usec * Time::kNanosecondsPerMicrosecond;
-#else
- struct timespec now;
- clock_gettime(CLOCK_MONOTONIC, &now);
- absolute_time.tv_sec = now.tv_sec;
- absolute_time.tv_nsec = now.tv_nsec;
-#endif
-
- absolute_time.tv_sec += relative_time.tv_sec;
- absolute_time.tv_nsec += relative_time.tv_nsec;
- absolute_time.tv_sec += absolute_time.tv_nsec / Time::kNanosecondsPerSecond;
- absolute_time.tv_nsec %= Time::kNanosecondsPerSecond;
- DCHECK_GE(absolute_time.tv_sec, now.tv_sec); // Overflow paranoia
-
-#if defined(OS_ANDROID) && defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)
- int rv = pthread_cond_timedwait_monotonic_np(
- &condition_, user_mutex_, &absolute_time);
-#else
- int rv = pthread_cond_timedwait(&condition_, user_mutex_, &absolute_time);
-#endif // OS_ANDROID && HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC
-#endif // OS_MACOSX
-
- DCHECK(rv == 0 || rv == ETIMEDOUT);
-#if DCHECK_IS_ON()
- user_lock_->CheckUnheldAndMark();
-#endif
-}
-
-void ConditionVariable::Broadcast() {
- int rv = pthread_cond_broadcast(&condition_);
- DCHECK_EQ(0, rv);
-}
-
-void ConditionVariable::Signal() {
- int rv = pthread_cond_signal(&condition_);
- DCHECK_EQ(0, rv);
-}
-
-} // namespace base