dlls/msvcrt/thread.c

   1 /*
   2  * msvcrt.dll thread functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  */
   6 #include "msvcrt.h"
   7
   8 #include "msvcrt/malloc.h"
   9 #include "msvcrt/process.h"
  10
  11 DEFAULT_DEBUG_CHANNEL(msvcrt);
  12
  13 /********************************************************************/
  14
  15 typedef struct {
  16   _beginthread_start_routine_t start_address;
  17   void *arglist;
  18 } _beginthread_trampoline_t;
  19
  20 /*********************************************************************
  21  *              _beginthread_trampoline
  22  */
  23 static DWORD CALLBACK _beginthread_trampoline(LPVOID arg)
  24 {
  25     _beginthread_trampoline_t local_trampoline;
  26
  27     /* Maybe it's just being paranoid, but freeing arg right
  28      * away seems safer.
  29      */
  30     memcpy(&local_trampoline,arg,sizeof(local_trampoline));
  31     MSVCRT_free(arg);
  32
  33     local_trampoline.start_address(local_trampoline.arglist);
  34     return 0;
  35 }
  36
  37 /*********************************************************************
  38  *              _beginthread (MSVCRT.@)
  39  */
  40 unsigned long _beginthread(
  41   _beginthread_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
  42   unsigned int stack_size, /* [in] Stack size for new thread or 0 */
  43   void *arglist)           /* [in] Argument list to be passed to new thread or NULL */
  44 {
  45   _beginthread_trampoline_t* trampoline;
  46
  47   TRACE("(%p, %d, %p)\n", start_address, stack_size, arglist);
  48
  49   /* Allocate the trampoline here so that it is still valid when the thread
  50    * starts... typically after this function has returned.
  51    * _beginthread_trampoline is responsible for freeing the trampoline
  52    */
  53   trampoline=MSVCRT_malloc(sizeof(*trampoline));
  54   trampoline->start_address = start_address;
  55   trampoline->arglist = arglist;
  56
  57   /* FIXME */
  58   return CreateThread(NULL, stack_size, _beginthread_trampoline, trampoline, 0, NULL);
  59 }
  60
  61 /*********************************************************************
  62  *              _beginthreadex (MSVCRT.@)
  63  */
  64 unsigned long _beginthreadex(
  65   void *security,          /* [in] Security descriptor for new thread; must be NULL for Windows 9x applications */
  66   unsigned int stack_size, /* [in] Stack size for new thread or 0 */
  67   _beginthreadex_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
  68   void *arglist,           /* [in] Argument list to be passed to new thread or NULL */
  69   unsigned int initflag,   /* [in] Initial state of new thread (0 for running or CREATE_SUSPEND for suspended) */
  70   unsigned int *thrdaddr)  /* [out] Points to a 32-bit variable that receives the thread identifier */
  71 {
  72   TRACE("(%p, %d, %p, %p, %d, %p)\n", security, stack_size, start_address, arglist, initflag, thrdaddr);
  73
  74   /* FIXME */
  75   return CreateThread(security, stack_size, (LPTHREAD_START_ROUTINE) start_address,
  76                       arglist, initflag, (LPDWORD) thrdaddr);
  77 }
  78
  79 /*********************************************************************
  80  *              _endthread (MSVCRT.@)
  81  */
  82 void _endthread(void)
  83 {
  84   TRACE("(void)\n");
  85
  86   /* FIXME */
  87   ExitThread(0);
  88 }
  89
  90 /*********************************************************************
  91  *              _endthreadex (MSVCRT.@)
  92  */
  93 void _endthreadex(
  94   unsigned int retval) /* [in] Thread exit code */
  95 {
  96   TRACE("(%d)\n", retval);
  97
  98   /* FIXME */
  99   ExitThread(retval);
 100 }
 101