Return to curl_threads.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / curl / lib

curl

    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: 
   23: #include "curl_setup.h"
   24: 
   25: #include <curl/curl.h>
   26: 
   27: #if defined(USE_THREADS_POSIX)
   28: #  ifdef HAVE_PTHREAD_H
   29: #    include <pthread.h>
   30: #  endif
   31: #elif defined(USE_THREADS_WIN32)
   32: #  ifdef HAVE_PROCESS_H
   33: #    include <process.h>
   34: #  endif
   35: #endif
   36: 
   37: #include "curl_threads.h"
   38: #include "curl_memory.h"
   39: /* The last #include file should be: */
   40: #include "memdebug.h"
   41: 
   42: #if defined(USE_THREADS_POSIX)
   43: 
   44: struct curl_actual_call {
   45:   unsigned int (*func)(void *);
   46:   void *arg;
   47: };
   48: 
   49: static void *curl_thread_create_thunk(void *arg)
   50: {
   51:   struct curl_actual_call * ac = arg;
   52:   unsigned int (*func)(void *) = ac->func;
   53:   void *real_arg = ac->arg;
   54: 
   55:   free(ac);
   56: 
   57:   (*func)(real_arg);
   58: 
   59:   return 0;
   60: }
   61: 
   62: curl_thread_t Curl_thread_create(unsigned int (*func) (void *), void *arg)
   63: {
   64:   curl_thread_t t = malloc(sizeof(pthread_t));
   65:   struct curl_actual_call *ac = malloc(sizeof(struct curl_actual_call));
   66:   if(!(ac && t))
   67:     goto err;
   68: 
   69:   ac->func = func;
   70:   ac->arg = arg;
   71: 
   72:   if(pthread_create(t, NULL, curl_thread_create_thunk, ac) != 0)
   73:     goto err;
   74: 
   75:   return t;
   76: 
   77: err:
   78:   free(t);
   79:   free(ac);
   80:   return curl_thread_t_null;
   81: }
   82: 
   83: void Curl_thread_destroy(curl_thread_t hnd)
   84: {
   85:   if(hnd != curl_thread_t_null) {
   86:     pthread_detach(*hnd);
   87:     free(hnd);
   88:   }
   89: }
   90: 
   91: int Curl_thread_join(curl_thread_t *hnd)
   92: {
   93:   int ret = (pthread_join(**hnd, NULL) == 0);
   94: 
   95:   free(*hnd);
   96:   *hnd = curl_thread_t_null;
   97: 
   98:   return ret;
   99: }
  100: 
  101: #elif defined(USE_THREADS_WIN32)
  102: 
  103: /* !checksrc! disable SPACEBEFOREPAREN 1 */
  104: curl_thread_t Curl_thread_create(unsigned int (CURL_STDCALL *func) (void *),
  105:                                  void *arg)
  106: {
  107: #ifdef _WIN32_WCE
  108:   typedef HANDLE curl_win_thread_handle_t;
  109: #elif defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
  110:   typedef unsigned long curl_win_thread_handle_t;
  111: #else
  112:   typedef uintptr_t curl_win_thread_handle_t;
  113: #endif
  114:   curl_thread_t t;
  115:   curl_win_thread_handle_t thread_handle;
  116: #ifdef _WIN32_WCE
  117:   thread_handle = CreateThread(NULL, 0, func, arg, 0, NULL);
  118: #else
  119:   thread_handle = _beginthreadex(NULL, 0, func, arg, 0, NULL);
  120: #endif
  121:   t = (curl_thread_t)thread_handle;
  122:   if((t == 0) || (t == LongToHandle(-1L))) {
  123: #ifdef _WIN32_WCE
  124:     DWORD gle = GetLastError();
  125:     errno = ((gle == ERROR_ACCESS_DENIED ||
  126:               gle == ERROR_NOT_ENOUGH_MEMORY) ?
  127:              EACCES : EINVAL);
  128: #endif
  129:     return curl_thread_t_null;
  130:   }
  131:   return t;
  132: }
  133: 
  134: void Curl_thread_destroy(curl_thread_t hnd)
  135: {
  136:   CloseHandle(hnd);
  137: }
  138: 
  139: int Curl_thread_join(curl_thread_t *hnd)
  140: {
  141: #if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_VISTA) || \
  142:     (_WIN32_WINNT < _WIN32_WINNT_VISTA)
  143:   int ret = (WaitForSingleObject(*hnd, INFINITE) == WAIT_OBJECT_0);
  144: #else
  145:   int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);
  146: #endif
  147: 
  148:   Curl_thread_destroy(*hnd);
  149: 
  150:   *hnd = curl_thread_t_null;
  151: 
  152:   return ret;
  153: }
  154: 
  155: #endif /* USE_THREADS_* */