On Wed, Jan 24, 2001 at 07:33:07PM +0100, Sebastian Bergmann wrote:
> libmysql.lib(my_thr_init.obj) : error LNK2001:
> Not resolved external symbol _win_pthread_init
OK. Can you add the attached file to the libmysql directory
and see if it fixes the problem? If so, I'll add it to CVS.
Thanks.
Tim
--
__ ___ ___ ____ __
/ |/ /_ __/ __/ __ \/ / Tim Smith <[EMAIL PROTECTED]>
/ /|_/ / // /\ \/ /_/ / /__ MySQL AB, Development Team
/_/ /_/\_, /___/\___\_\___/ Helsinki, Finland (for a few weeks)
<___/ www.mysql.com
/* Copyright Abandoned. Public domain, no warranty, etc. */
/*****************************************************************************
** Simulation of posix threads calls for WIN95 and NT
*****************************************************************************/
/* SAFE_MUTEX will not work until the thread structure is up to date */
#undef SAFE_MUTEX
#include "mysys_priv.h"
#if defined(THREAD) && defined(__WIN__)
#include <m_string.h>
#undef getpid
#include <process.h>
static pthread_mutex_t THR_LOCK_thread;
struct pthread_map
{
HANDLE pthreadself;
pthread_handler func;
void *param;
};
void win_pthread_init(void)
{
pthread_mutex_init(&THR_LOCK_thread,NULL);
}
/*
** 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(); /* Will always succeed in windows */
pthread_mutex_lock(&THR_LOCK_thread); /* Wait for beginthread to return */
win_pthread_self=((struct pthread_map *) param)->pthreadself;
pthread_mutex_unlock(&THR_LOCK_thread);
free((char*) param); /* Free param from create */
pthread_exit((void*) (*func)(func_param));
return 0; /* Safety */
}
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((void( __cdecl *)(void *)) 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 (hThread == (HANDLE) -1)
{
int error=errno;
DBUG_PRINT("error",
("Can't create thread to handle request (error %d)",error));
DBUG_RETURN(error ? error : -1);
}
VOID(SetThreadPriority(hThread, attr->priority)) ;
DBUG_RETURN(0);
}
void pthread_exit(void *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
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