1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,99 @@
1.4 +// Copyright (c) 2012, Google Inc.
1.5 +// All rights reserved.
1.6 +//
1.7 +// Redistribution and use in source and binary forms, with or without
1.8 +// modification, are permitted provided that the following conditions are
1.9 +// met:
1.10 +//
1.11 +// * Redistributions of source code must retain the above copyright
1.12 +// notice, this list of conditions and the following disclaimer.
1.13 +// * Redistributions in binary form must reproduce the above
1.14 +// copyright notice, this list of conditions and the following disclaimer
1.15 +// in the documentation and/or other materials provided with the
1.16 +// distribution.
1.17 +// * Neither the name of Google Inc. nor the names of its
1.18 +// contributors may be used to endorse or promote products derived from
1.19 +// this software without specific prior written permission.
1.20 +//
1.21 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.22 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.23 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.24 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
1.25 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
1.26 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
1.27 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.28 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.29 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.30 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.31 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.32 +
1.33 +// This contains Pthread-related functions not provided by the Android NDK
1.34 +// but required by the Breakpad unit test. The functions are inlined here
1.35 +// in a C++ anonymous namespace in order to keep the build files simples.
1.36 +
1.37 +#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H
1.38 +#define GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H
1.39 +
1.40 +#include <pthread.h>
1.41 +
1.42 +namespace {
1.43 +
1.44 +// Android doesn't provide pthread_barrier_t for now.
1.45 +#ifndef PTHREAD_BARRIER_SERIAL_THREAD
1.46 +
1.47 +// Anything except 0 will do here.
1.48 +#define PTHREAD_BARRIER_SERIAL_THREAD 0x12345
1.49 +
1.50 +typedef struct {
1.51 + pthread_mutex_t mutex;
1.52 + pthread_cond_t cond;
1.53 + unsigned count;
1.54 +} pthread_barrier_t;
1.55 +
1.56 +int pthread_barrier_init(pthread_barrier_t* barrier,
1.57 + const void* /* barrier_attr */,
1.58 + unsigned count) {
1.59 + barrier->count = count;
1.60 + pthread_mutex_init(&barrier->mutex, NULL);
1.61 + pthread_cond_init(&barrier->cond, NULL);
1.62 + return 0;
1.63 +}
1.64 +
1.65 +int pthread_barrier_wait(pthread_barrier_t* barrier) {
1.66 + // Lock the mutex
1.67 + pthread_mutex_lock(&barrier->mutex);
1.68 + // Decrement the count. If this is the first thread to reach 0, wake up
1.69 + // waiters, unlock the mutex, then return PTHREAD_BARRIER_SERIAL_THREAD.
1.70 + if (--barrier->count == 0) {
1.71 + // First thread to reach the barrier
1.72 + pthread_cond_broadcast(&barrier->cond);
1.73 + pthread_mutex_unlock(&barrier->mutex);
1.74 + return PTHREAD_BARRIER_SERIAL_THREAD;
1.75 + }
1.76 + // Otherwise, wait for other threads until the count reaches 0, then
1.77 + // return 0 to indicate this is not the first thread.
1.78 + do {
1.79 + pthread_cond_wait(&barrier->cond, &barrier->mutex);
1.80 + } while (barrier->count > 0);
1.81 +
1.82 + pthread_mutex_unlock(&barrier->mutex);
1.83 + return 0;
1.84 +}
1.85 +
1.86 +int pthread_barrier_destroy(pthread_barrier_t *barrier) {
1.87 + barrier->count = 0;
1.88 + pthread_cond_destroy(&barrier->cond);
1.89 + pthread_mutex_destroy(&barrier->mutex);
1.90 + return 0;
1.91 +}
1.92 +
1.93 +#endif // defined(PTHREAD_BARRIER_SERIAL_THREAD)
1.94 +
1.95 +int pthread_yield(void) {
1.96 + sched_yield();
1.97 + return 0;
1.98 +}
1.99 +
1.100 +} // namespace
1.101 +
1.102 +#endif // GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H
