dlls/msvcrt/thread.c

   1 /*
   2  * msvcrt.dll thread functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include "msvcrt.h"
  21
  22 #include "msvcrt/malloc.h"
  23 #include "msvcrt/process.h"
  24
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  28
  29 /********************************************************************/
  30
  31 typedef struct {
  32   _beginthread_start_routine_t start_address;
  33   void *arglist;
  34 } _beginthread_trampoline_t;
  35
  36 /*********************************************************************
  37  *              _beginthread_trampoline
  38  */
  39 static DWORD CALLBACK _beginthread_trampoline(LPVOID arg)
  40 {
  41     _beginthread_trampoline_t local_trampoline;
  42
  43     /* Maybe it's just being paranoid, but freeing arg right
  44      * away seems safer.
  45      */
  46     memcpy(&local_trampoline,arg,sizeof(local_trampoline));
  47     MSVCRT_free(arg);
  48
  49     local_trampoline.start_address(local_trampoline.arglist);
  50     return 0;
  51 }
  52
  53 /*********************************************************************
  54  *              _beginthread (MSVCRT.@)
  55  */
  56 unsigned long _beginthread(
  57   _beginthread_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
  58   unsigned int stack_size, /* [in] Stack size for new thread or 0 */
  59   void *arglist)           /* [in] Argument list to be passed to new thread or NULL */
  60 {
  61   _beginthread_trampoline_t* trampoline;
  62
  63   TRACE("(%p, %d, %p)\n", start_address, stack_size, arglist);
  64
  65   /* Allocate the trampoline here so that it is still valid when the thread
  66    * starts... typically after this function has returned.
  67    * _beginthread_trampoline is responsible for freeing the trampoline
  68    */
  69   trampoline=MSVCRT_malloc(sizeof(*trampoline));
  70   trampoline->start_address = start_address;
  71   trampoline->arglist = arglist;
  72
  73   /* FIXME */
  74   return CreateThread(NULL, stack_size, _beginthread_trampoline, trampoline, 0, NULL);
  75 }
  76
  77 /*********************************************************************
  78  *              _beginthreadex (MSVCRT.@)
  79  */
  80 unsigned long _beginthreadex(
  81   void *security,          /* [in] Security descriptor for new thread; must be NULL for Windows 9x applications */
  82   unsigned int stack_size, /* [in] Stack size for new thread or 0 */
  83   _beginthreadex_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
  84   void *arglist,           /* [in] Argument list to be passed to new thread or NULL */
  85   unsigned int initflag,   /* [in] Initial state of new thread (0 for running or CREATE_SUSPEND for suspended) */
  86   unsigned int *thrdaddr)  /* [out] Points to a 32-bit variable that receives the thread identifier */
  87 {
  88   TRACE("(%p, %d, %p, %p, %d, %p)\n", security, stack_size, start_address, arglist, initflag, thrdaddr);
  89
  90   /* FIXME */
  91   return CreateThread(security, stack_size, (LPTHREAD_START_ROUTINE) start_address,
  92                       arglist, initflag, (LPDWORD) thrdaddr);
  93 }
  94
  95 /*********************************************************************
  96  *              _endthread (MSVCRT.@)
  97  */
  98 void _endthread(void)
  99 {
 100   TRACE("(void)\n");
 101
 102   /* FIXME */
 103   ExitThread(0);
 104 }
 105
 106 /*********************************************************************
 107  *              _endthreadex (MSVCRT.@)
 108  */
 109 void _endthreadex(
 110   unsigned int retval) /* [in] Thread exit code */
 111 {
 112   TRACE("(%d)\n", retval);
 113
 114   /* FIXME */
 115   ExitThread(retval);
 116 }
 117