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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h b/toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h new file mode 100644 index 000000000..15c6309ec --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/android/testing/pthread_fixes.h @@ -0,0 +1,99 @@ +// Copyright (c) 2012, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// This contains Pthread-related functions not provided by the Android NDK +// but required by the Breakpad unit test. The functions are inlined here +// in a C++ anonymous namespace in order to keep the build files simples. + +#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H +#define GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H + +#include <pthread.h> + +namespace { + +// Android doesn't provide pthread_barrier_t for now. +#ifndef PTHREAD_BARRIER_SERIAL_THREAD + +// Anything except 0 will do here. +#define PTHREAD_BARRIER_SERIAL_THREAD 0x12345 + +typedef struct { + pthread_mutex_t mutex; + pthread_cond_t cond; + unsigned count; +} pthread_barrier_t; + +int pthread_barrier_init(pthread_barrier_t* barrier, + const void* /* barrier_attr */, + unsigned count) { + barrier->count = count; + pthread_mutex_init(&barrier->mutex, NULL); + pthread_cond_init(&barrier->cond, NULL); + return 0; +} + +int pthread_barrier_wait(pthread_barrier_t* barrier) { + // Lock the mutex + pthread_mutex_lock(&barrier->mutex); + // Decrement the count. If this is the first thread to reach 0, wake up + // waiters, unlock the mutex, then return PTHREAD_BARRIER_SERIAL_THREAD. + if (--barrier->count == 0) { + // First thread to reach the barrier + pthread_cond_broadcast(&barrier->cond); + pthread_mutex_unlock(&barrier->mutex); + return PTHREAD_BARRIER_SERIAL_THREAD; + } + // Otherwise, wait for other threads until the count reaches 0, then + // return 0 to indicate this is not the first thread. + do { + pthread_cond_wait(&barrier->cond, &barrier->mutex); + } while (barrier->count > 0); + + pthread_mutex_unlock(&barrier->mutex); + return 0; +} + +int pthread_barrier_destroy(pthread_barrier_t *barrier) { + barrier->count = 0; + pthread_cond_destroy(&barrier->cond); + pthread_mutex_destroy(&barrier->mutex); + return 0; +} + +#endif // defined(PTHREAD_BARRIER_SERIAL_THREAD) + +int pthread_yield(void) { + sched_yield(); + return 0; +} + +} // namespace + +#endif // GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_PTHREAD_FIXES_H |