| // Copyright 2008, 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. |
| |
| #include "base/platform_thread.h" |
| |
| #include <errno.h> |
| #include <sched.h> |
| |
| #if defined(OS_MACOSX) |
| #include <mach/mach.h> |
| #elif defined(OS_LINUX) |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| #endif |
| |
| static void* ThreadFunc(void* closure) { |
| PlatformThread::Delegate* delegate = |
| static_cast<PlatformThread::Delegate*>(closure); |
| delegate->ThreadMain(); |
| return NULL; |
| } |
| |
| // static |
| int PlatformThread::CurrentId() { |
| // Pthreads doesn't have the concept of a thread ID, so we have to reach down |
| // into the kernel. |
| #if defined(OS_MACOSX) |
| return mach_thread_self(); |
| #elif defined(OS_LINUX) |
| return syscall(__NR_gettid); |
| #endif |
| } |
| |
| // static |
| void PlatformThread::YieldCurrentThread() { |
| sched_yield(); |
| } |
| |
| // static |
| void PlatformThread::Sleep(int duration_ms) { |
| struct timespec sleep_time, remaining; |
| |
| // Contains the portion of duration_ms >= 1 sec. |
| sleep_time.tv_sec = duration_ms / 1000; |
| duration_ms -= sleep_time.tv_sec * 1000; |
| |
| // Contains the portion of duration_ms < 1 sec. |
| sleep_time.tv_nsec = duration_ms * 1000 * 1000; // nanoseconds. |
| |
| while (nanosleep(&sleep_time, &remaining) == -1 && errno == EINTR) |
| sleep_time = remaining; |
| } |
| |
| // static |
| void PlatformThread::SetName(int thread_id, const char* name) { |
| // TODO(darin): implement me! |
| } |
| |
| // static |
| bool PlatformThread::Create(size_t stack_size, Delegate* delegate, |
| PlatformThreadHandle* thread_handle) { |
| bool success = false; |
| pthread_attr_t attributes; |
| pthread_attr_init(&attributes); |
| |
| // Pthreads are joinable by default, so we don't need to specify any special |
| // attributes to be able to call pthread_join later. |
| |
| if (stack_size > 0) |
| pthread_attr_setstacksize(&attributes, stack_size); |
| |
| success = !pthread_create(thread_handle, &attributes, ThreadFunc, delegate); |
| |
| pthread_attr_destroy(&attributes); |
| return success; |
| } |
| |
| // static |
| void PlatformThread::Join(PlatformThreadHandle thread_handle) { |
| pthread_join(thread_handle, NULL); |
| } |