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      1 /*
      2  * Copyright 2011 Google Inc. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "test/platform_thread.h"
     18 
     19 namespace sfntly {
     20 
     21 #if defined (WIN32)
     22 
     23 DWORD __stdcall ThreadFunc(void* params) {
     24   PlatformThread::Delegate* delegate =
     25       static_cast<PlatformThread::Delegate*>(params);
     26   delegate->ThreadMain();
     27   return 0;
     28 }
     29 
     30 // static
     31 bool PlatformThread::Create(Delegate* delegate,
     32                             PlatformThreadHandle* thread_handle) {
     33   assert(thread_handle);
     34   *thread_handle = CreateThread(NULL, 0, ThreadFunc, delegate, 0, NULL);
     35   if (!(*thread_handle)) {
     36     return false;
     37   }
     38 
     39   return true;
     40 }
     41 
     42 // static
     43 void PlatformThread::Join(PlatformThreadHandle thread_handle) {
     44   assert(thread_handle);
     45   DWORD result = WaitForSingleObject(thread_handle, INFINITE);
     46   assert(result == WAIT_OBJECT_0);
     47   CloseHandle(thread_handle);
     48 }
     49 
     50 // static
     51 void PlatformThread::Sleep(int32_t duration_ms) {
     52   ::Sleep(duration_ms);
     53 }
     54 
     55 #else
     56 
     57 void* ThreadFunc(void* params) {
     58   PlatformThread::Delegate* delegate =
     59       static_cast<PlatformThread::Delegate*>(params);
     60   delegate->ThreadMain();
     61   return NULL;
     62 }
     63 
     64 // static
     65 bool PlatformThread::Create(Delegate* delegate,
     66                             PlatformThreadHandle* thread_handle) {
     67   assert(thread_handle);
     68 
     69   bool success = false;
     70   pthread_attr_t attributes;
     71   pthread_attr_init(&attributes);
     72   success = !pthread_create(thread_handle, &attributes, ThreadFunc, delegate);
     73   pthread_attr_destroy(&attributes);
     74 
     75   return success;
     76 }
     77 
     78 // static
     79 void PlatformThread::Join(PlatformThreadHandle thread_handle) {
     80   assert(thread_handle);
     81   pthread_join(thread_handle, NULL);
     82 }
     83 
     84 // static
     85 void PlatformThread::Sleep(int32_t duration_ms) {
     86   struct timespec sleep_time, remaining;
     87 
     88   // Contains the portion of duration_ms >= 1 sec.
     89   sleep_time.tv_sec = duration_ms / 1000;
     90   duration_ms -= sleep_time.tv_sec * 1000;
     91 
     92   // Contains the portion of duration_ms < 1 sec.
     93   sleep_time.tv_nsec = duration_ms * 1000 * 1000;  // nanoseconds.
     94 
     95   while (nanosleep(&sleep_time, &remaining) == -1 && errno == EINTR)
     96     sleep_time = remaining;
     97 }
     98 
     99 #endif  // WIN32
    100 
    101 }  // namespace sfntly
    102