Sweden-Number/dlls/msvcrt/thread.c

177 lines
5.4 KiB
C

/*
* msvcrt.dll thread functions
*
* Copyright 2000 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "msvcrt.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/********************************************************************/
typedef struct {
HANDLE thread;
MSVCRT__beginthread_start_routine_t start_address;
void *arglist;
} _beginthread_trampoline_t;
/*********************************************************************
* msvcrt_get_thread_data
*
* Return the thread local storage structure.
*/
thread_data_t *msvcrt_get_thread_data(void)
{
thread_data_t *ptr;
DWORD err = GetLastError(); /* need to preserve last error */
if (!(ptr = TlsGetValue( msvcrt_tls_index )))
{
if (!(ptr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*ptr) )))
_amsg_exit( _RT_THREAD );
if (!TlsSetValue( msvcrt_tls_index, ptr )) _amsg_exit( _RT_THREAD );
ptr->tid = GetCurrentThreadId();
ptr->handle = INVALID_HANDLE_VALUE;
ptr->random_seed = 1;
ptr->locinfo = MSVCRT_locale->locinfo;
ptr->mbcinfo = MSVCRT_locale->mbcinfo;
}
SetLastError( err );
return ptr;
}
/*********************************************************************
* _endthread (MSVCRT.@)
*/
void CDECL _endthread(void)
{
thread_data_t *tls;
TRACE("(void)\n");
tls = TlsGetValue(msvcrt_tls_index);
if (tls && tls->handle != INVALID_HANDLE_VALUE)
{
CloseHandle(tls->handle);
tls->handle = INVALID_HANDLE_VALUE;
} else
WARN("tls=%p tls->handle=%p\n", tls, tls ? tls->handle : INVALID_HANDLE_VALUE);
/* FIXME */
ExitThread(0);
}
/*********************************************************************
* _endthreadex (MSVCRT.@)
*/
void CDECL _endthreadex(
unsigned int retval) /* [in] Thread exit code */
{
TRACE("(%d)\n", retval);
/* FIXME */
ExitThread(retval);
}
/*********************************************************************
* _beginthread_trampoline
*/
static DWORD CALLBACK _beginthread_trampoline(LPVOID arg)
{
_beginthread_trampoline_t local_trampoline;
thread_data_t *data = msvcrt_get_thread_data();
memcpy(&local_trampoline,arg,sizeof(local_trampoline));
data->handle = local_trampoline.thread;
MSVCRT_free(arg);
local_trampoline.start_address(local_trampoline.arglist);
_endthread();
return 0;
}
/*********************************************************************
* _beginthread (MSVCRT.@)
*/
MSVCRT_uintptr_t CDECL _beginthread(
MSVCRT__beginthread_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
unsigned int stack_size, /* [in] Stack size for new thread or 0 */
void *arglist) /* [in] Argument list to be passed to new thread or NULL */
{
_beginthread_trampoline_t* trampoline;
HANDLE thread;
TRACE("(%p, %d, %p)\n", start_address, stack_size, arglist);
trampoline = MSVCRT_malloc(sizeof(*trampoline));
if(!trampoline) {
*MSVCRT__errno() = MSVCRT_EAGAIN;
return -1;
}
thread = CreateThread(NULL, stack_size, _beginthread_trampoline,
trampoline, CREATE_SUSPENDED, NULL);
if(!thread) {
MSVCRT_free(trampoline);
*MSVCRT__errno() = MSVCRT_EAGAIN;
return -1;
}
trampoline->thread = thread;
trampoline->start_address = start_address;
trampoline->arglist = arglist;
if(ResumeThread(thread) == -1) {
MSVCRT_free(trampoline);
*MSVCRT__errno() = MSVCRT_EAGAIN;
return -1;
}
return (MSVCRT_uintptr_t)thread;
}
/*********************************************************************
* _beginthreadex (MSVCRT.@)
*/
MSVCRT_uintptr_t CDECL _beginthreadex(
void *security, /* [in] Security descriptor for new thread; must be NULL for Windows 9x applications */
unsigned int stack_size, /* [in] Stack size for new thread or 0 */
MSVCRT__beginthreadex_start_routine_t start_address, /* [in] Start address of routine that begins execution of new thread */
void *arglist, /* [in] Argument list to be passed to new thread or NULL */
unsigned int initflag, /* [in] Initial state of new thread (0 for running or CREATE_SUSPEND for suspended) */
unsigned int *thrdaddr) /* [out] Points to a 32-bit variable that receives the thread identifier */
{
TRACE("(%p, %d, %p, %p, %d, %p)\n", security, stack_size, start_address, arglist, initflag, thrdaddr);
/* FIXME */
return (MSVCRT_uintptr_t)CreateThread(security, stack_size,
start_address, arglist,
initflag, thrdaddr);
}
#if _MSVCR_VER>=80
/*********************************************************************
* _getptd (MSVCR80.@)
*/
thread_data_t* CDECL _getptd(void)
{
FIXME("returns undocumented/not fully filled data\n");
return msvcrt_get_thread_data();
}
#endif