mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 03:52:35 +01:00
111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA */
|
|
|
|
/*****************************************************************************
|
|
** Simulation of posix threads calls for WIN95 and NT
|
|
*****************************************************************************/
|
|
|
|
#include "mysys_priv.h"
|
|
#if defined(THREAD) && defined(__WIN__)
|
|
#include <m_string.h>
|
|
#undef getpid
|
|
#include <process.h>
|
|
|
|
extern pthread_mutex_t THR_LOCK_thread;
|
|
|
|
struct pthread_map
|
|
{
|
|
HANDLE pthreadself;
|
|
pthread_handler func;
|
|
void *param;
|
|
};
|
|
|
|
/*
|
|
** We have tried to use '_beginthreadex' instead of '_beginthread' here
|
|
** but in this case the program leaks about 512 characters for each
|
|
** created thread !
|
|
** As we want to save the created thread handler for other threads to
|
|
** use and to be returned by pthread_self() (instead of the Win32 pseudo
|
|
** handler), we have to go trough pthread_start() to catch the returned handler
|
|
** in the new thread.
|
|
*/
|
|
|
|
static pthread_handler_decl(pthread_start,param)
|
|
{
|
|
pthread_handler func=((struct pthread_map *) param)->func;
|
|
void *func_param=((struct pthread_map *) param)->param;
|
|
my_thread_init();
|
|
pthread_mutex_lock(&THR_LOCK_thread); /* Wait for beingthread to return */
|
|
win_pthread_self=((struct pthread_map *) param)->pthreadself;
|
|
pthread_mutex_unlock(&THR_LOCK_thread);
|
|
free((char*) param);
|
|
pthread_exit((*func)(func_param));
|
|
return 0;
|
|
}
|
|
|
|
|
|
int pthread_create(pthread_t *thread_id, pthread_attr_t *attr,
|
|
pthread_handler func, void *param)
|
|
{
|
|
HANDLE hThread;
|
|
struct pthread_map *map;
|
|
DBUG_ENTER("pthread_create");
|
|
|
|
if (!(map=malloc(sizeof(*map))))
|
|
DBUG_RETURN(-1);
|
|
map->func=func;
|
|
map->param=param;
|
|
pthread_mutex_lock(&THR_LOCK_thread);
|
|
#ifdef __BORLANDC__
|
|
hThread=(HANDLE)_beginthread((void(_USERENTRY *)(void *)) pthread_start,
|
|
attr->dwStackSize ? attr->dwStackSize :
|
|
65535, (void*) map);
|
|
#else
|
|
hThread=(HANDLE)_beginthread(pthread_start,
|
|
attr->dwStackSize ? attr->dwStackSize :
|
|
65535, (void*) map);
|
|
#endif
|
|
DBUG_PRINT("info", ("hThread=%lu",(long) hThread));
|
|
*thread_id=map->pthreadself=hThread;
|
|
pthread_mutex_unlock(&THR_LOCK_thread);
|
|
|
|
if ((long) hThread == -1L)
|
|
{
|
|
long error=errno;
|
|
DBUG_PRINT("error",
|
|
("Can't create thread to handle request (error %ld)",error));
|
|
DBUG_RETURN(error ? error : -1);
|
|
}
|
|
VOID(SetThreadPriority(hThread, attr->priority)) ;
|
|
DBUG_RETURN(0);
|
|
}
|
|
|
|
|
|
void pthread_exit(unsigned A)
|
|
{
|
|
_endthread();
|
|
}
|
|
|
|
/* This is neaded to get the macro pthread_setspecific to work */
|
|
|
|
int win_pthread_setspecific(void *a,void *b,uint length)
|
|
{
|
|
memcpy(a,b,length);
|
|
return 0;
|
|
}
|
|
|
|
#endif
|