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/*
* pthread emulation for re-entrant libcs
*
* We can't use pthreads directly, so why not let libcs
* that want pthreads use Wine's own threading instead...
*
* Copyright 1999 Ove Kåven
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#ifndef HAVE_NPTL
struct _pthread_cleanup_buffer;
#define _GNU_SOURCE /* we may need to override some GNU extensions */
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <setjmp.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <string.h>
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
#ifdef HAVE_VALGRIND_MEMCHECK_H
#include <valgrind/memcheck.h>
#endif
#include "winbase.h"
#include "thread.h"
#include "winternl.h"
/* default errno before threading is initialized */
static int *default_errno_location(void)
{
static int static_errno;
return &static_errno;
}
/* default h_errno before threading is initialized */
static int *default_h_errno_location(void)
{
static int static_h_errno;
return &static_h_errno;
}
/* errno once threading is working */
static int *thread_errno_location(void)
{
return &NtCurrentTeb()->thread_errno;
}
/* h_errno once threading is working */
static int *thread_h_errno_location(void)
{
return &NtCurrentTeb()->thread_h_errno;
}
static int* (*errno_location_ptr)(void) = default_errno_location;
static int* (*h_errno_location_ptr)(void) = default_h_errno_location;
/***********************************************************************
* __errno_location/__error/__errno/___errno/__thr_errno
*
* Get the per-thread errno location.
*/
int *__errno_location(void) { return errno_location_ptr(); } /* Linux */
int *__error(void) { return errno_location_ptr(); } /* FreeBSD */
int *__errno(void) { return errno_location_ptr(); } /* NetBSD */
int *___errno(void) { return errno_location_ptr(); } /* Solaris */
int *__thr_errno(void) { return errno_location_ptr(); } /* UnixWare */
/***********************************************************************
* __h_errno_location
*
* Get the per-thread h_errno location.
*/
int *__h_errno_location(void)
{
return h_errno_location_ptr();
}
/* Currently this probably works only for glibc2,
* which checks for the presence of double-underscore-prepended
* pthread primitives, and use them if available.
* If they are not available, the libc defaults to
* non-threadsafe operation (not good). */
#if defined(__GLIBC__) || defined(__FreeBSD__)
#ifndef __USE_UNIX98
#define __USE_UNIX98
#endif
#include <pthread.h>
#include <signal.h>
#define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
#define PSTR(str) __ASM_NAME(#str)
/* adapt as necessary (a construct like this is used in glibc sources) */
#define strong_alias(orig, alias) \
asm(".globl " PSTR(alias) "\n" \
"\t.set " PSTR(alias) "," PSTR(orig))
/* thread descriptor */
#define FIRST_KEY 0
#define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
#define MAX_TSD 16
struct fork_block;
struct pthread_descr_struct
{
char dummy[2048];
struct __res_state res_state;
const void *key_data[MAX_KEYS]; /* for normal pthread keys */
const void *tsd_data[MAX_TSD]; /* for libc internal tsd variables */
};
typedef struct pthread_descr_struct *pthread_descr;
static struct pthread_descr_struct initial_descr;
pthread_descr __pthread_thread_self(void)
{
struct pthread_descr_struct *descr = NtCurrentTeb()->pthread_data;
if (!descr) return &initial_descr;
return descr;
}
strong_alias(__pthread_thread_self, pthread_thread_self);
/* pthread functions redirection */
struct pthread_functions
{
pid_t (*ptr_pthread_fork) (struct fork_block *);
int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, struct sched_param *);
int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, const struct sched_param *);
int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
int (*ptr___pthread_cond_init) (pthread_cond_t *, const pthread_condattr_t *);
int (*ptr___pthread_cond_signal) (pthread_cond_t *);
int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
int (*ptr_pthread_equal) (pthread_t, pthread_t);
void (*ptr___pthread_exit) (void *);
int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
int (*ptr_pthread_setschedparam) (pthread_t, int, const struct sched_param *);
int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
int (*ptr_pthread_mutex_init) (pthread_mutex_t *, const pthread_mutexattr_t *);
int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
pthread_t (*ptr_pthread_self) (void);
int (*ptr_pthread_setcancelstate) (int, int *);
int (*ptr_pthread_setcanceltype) (int, int *);
void (*ptr_pthread_do_exit) (void *retval, char *currentframe);
void (*ptr_pthread_cleanup_upto) (jmp_buf target, char *targetframe);
pthread_descr (*ptr_pthread_thread_self) (void);
int (*ptr_pthread_internal_tsd_set) (int key, const void *pointer);
void * (*ptr_pthread_internal_tsd_get) (int key);
void ** __attribute__ ((__const__)) (*ptr_pthread_internal_tsd_address) (int key);
int (*ptr_pthread_sigaction) (int sig, const struct sigaction * act, struct sigaction *oact);
int (*ptr_pthread_sigwait) (const sigset_t *set, int *sig);
int (*ptr_pthread_raise) (int sig);
};
static struct pthread_functions wine_pthread_functions;
static int init_done;
static pid_t (*libc_fork)(void);
static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
static int (*libc_uselocale)(int set);
static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
static int *libc_multiple_threads;
void PTHREAD_init_done(void)
{
init_done = 1;
}
struct __res_state *__res_state(void)
{
pthread_descr descr = __pthread_thread_self();
return &descr->res_state;
}
static inline void writejump( const char *symbol, void *dest )
{
#if defined(__GLIBC__) && defined(__i386__)
unsigned char *addr = dlsym( RTLD_NEXT, symbol );
if (!addr) return;
/* write a relative jump at the function address */
mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC|PROT_WRITE);
addr[0] = 0xe9;
*(int *)(addr+1) = (unsigned char *)dest - (addr + 5);
mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC);
# ifdef HAVE_VALGRIND_MEMCHECK_H
VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
# endif
#endif /* __GLIBC__ && __i386__ */
}
/***********************************************************************
* PTHREAD_init_thread
*
* Initialization for a newly created thread.
*/
void PTHREAD_init_thread(void)
{
static int first = 1;
if (first)
{
first = 0;
NtCurrentTeb()->pthread_data = &initial_descr;
errno_location_ptr = thread_errno_location;
h_errno_location_ptr = thread_h_errno_location;
libc_fork = dlsym( RTLD_NEXT, "fork" );
libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
libc_uselocale = dlsym( RTLD_NEXT, "uselocale" );
libc_pthread_init = dlsym( RTLD_NEXT, "__libc_pthread_init" );
if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &wine_pthread_functions );
writejump( "__errno_location", thread_errno_location );
writejump( "__h_errno_location", thread_h_errno_location );
writejump( "__res_state", __res_state );
}
else
{
struct pthread_descr_struct *descr = calloc( 1, sizeof(*descr) );
NtCurrentTeb()->pthread_data = descr;
if (libc_multiple_threads) *libc_multiple_threads = 1;
}
if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
}
/* redefine this to prevent libpthread from overriding our function pointers */
int *__libc_pthread_init( const struct pthread_functions *funcs )
{
return libc_multiple_threads;
}
/* NOTE: This is a truly extremely incredibly ugly hack!
* But it does seem to work... */
/* assume that pthread_mutex_t has room for at least one pointer,
* and hope that the users of pthread_mutex_t considers it opaque
* (never checks what's in it)
* also: assume that static initializer sets pointer to NULL
*/
typedef struct
{
#ifdef __GLIBC__
int reserved;
#endif
CRITICAL_SECTION *critsect;
} *wine_mutex;
/* see wine_mutex above for comments */
typedef struct {
RTL_RWLOCK *lock;
} *wine_rwlock;
typedef struct _wine_cleanup {
void (*routine)(void *);
void *arg;
} *wine_cleanup;
void __pthread_initialize(void)
{
}
struct pthread_thread_init {
void* (*start_routine)(void*);
void* arg;
};
static DWORD CALLBACK pthread_thread_start(LPVOID data)
{
struct pthread_thread_init init = *(struct pthread_thread_init*)data;
HeapFree(GetProcessHeap(),0,data);
return (DWORD)init.start_routine(init.arg);
}
int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
(*start_routine)(void *), void* arg)
{
HANDLE hThread;
struct pthread_thread_init* idata = HeapAlloc(GetProcessHeap(), 0,
sizeof(struct pthread_thread_init));
idata->start_routine = start_routine;
idata->arg = arg;
hThread = CreateThread( NULL, 0, pthread_thread_start, idata, 0,
(LPDWORD)thread);
if(hThread)
CloseHandle(hThread);
else
{
HeapFree(GetProcessHeap(),0,idata); /* free idata struct on failure */
return EAGAIN;
}
return 0;
}
int pthread_cancel(pthread_t thread)
{
HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, (DWORD)thread);
if(!TerminateThread(hThread, 0))
{
CloseHandle(hThread);
return EINVAL; /* return error */
}
CloseHandle(hThread);
return 0; /* return success */
}
int pthread_join(pthread_t thread, void **value_ptr)
{
HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, (DWORD)thread);
WaitForSingleObject(hThread, INFINITE);
if(!GetExitCodeThread(hThread, (LPDWORD)value_ptr))
{
CloseHandle(hThread);
return EINVAL; /* FIXME: make this more correctly match */
} /* windows errors */
CloseHandle(hThread);
return 0;
}
/*FIXME: not sure what to do with this one... */
int pthread_detach(pthread_t thread)
{
P_OUTPUT("FIXME:pthread_detach\n");
return 0;
}
/* FIXME: we have no equivalents in win32 for the policys */
/* so just keep this as a stub */
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
{
P_OUTPUT("FIXME:pthread_attr_setschedpolicy\n");
return 0;
}
/* FIXME: no win32 equivalent for scope */
int pthread_attr_setscope(pthread_attr_t *attr, int scope)
{
P_OUTPUT("FIXME:pthread_attr_setscope\n");
return 0; /* return success */
}
/* FIXME: no win32 equivalent for schedule param */
int pthread_attr_setschedparam(pthread_attr_t *attr,
const struct sched_param *param)
{
P_OUTPUT("FIXME:pthread_attr_setschedparam\n");
return 0; /* return success */
}
int __pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
{
static pthread_once_t the_once = PTHREAD_ONCE_INIT;
LONG once_now;
memcpy(&once_now,&the_once,sizeof(once_now));
if (InterlockedCompareExchange((LONG*)once_control, once_now+1, once_now) == once_now)
(*init_routine)();
return 0;
}
strong_alias(__pthread_once, pthread_once);
void __pthread_kill_other_threads_np(void)
{
/* we don't need to do anything here */
}
strong_alias(__pthread_kill_other_threads_np, pthread_kill_other_threads_np);
/***** atfork *****/
#define MAX_ATFORK 8 /* libc doesn't need that many anyway */
static CRITICAL_SECTION atfork_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &atfork_section,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { 0, (DWORD)(__FILE__ ": atfork_section") }
};
static CRITICAL_SECTION atfork_section = { &critsect_debug, -1, 0, 0, 0, 0 };
typedef void (*atfork_handler)();
static atfork_handler atfork_prepare[MAX_ATFORK];
static atfork_handler atfork_parent[MAX_ATFORK];
static atfork_handler atfork_child[MAX_ATFORK];
static int atfork_count;
int __pthread_atfork(void (*prepare)(void),
void (*parent)(void),
void (*child)(void))
{
if (init_done) RtlEnterCriticalSection( &atfork_section );
assert( atfork_count < MAX_ATFORK );
atfork_prepare[atfork_count] = prepare;
atfork_parent[atfork_count] = parent;
atfork_child[atfork_count] = child;
atfork_count++;
if (init_done) RtlLeaveCriticalSection( &atfork_section );
return 0;
}
strong_alias(__pthread_atfork, pthread_atfork);
pid_t __fork(void)
{
pid_t pid;
int i;
if (!libc_fork)
{
libc_fork = dlsym( RTLD_NEXT, "fork" );
assert( libc_fork );
}
RtlEnterCriticalSection( &atfork_section );
/* prepare handlers are called in reverse insertion order */
for (i = atfork_count - 1; i >= 0; i--) if (atfork_prepare[i]) atfork_prepare[i]();
if (!(pid = libc_fork()))
{
RtlInitializeCriticalSection( &atfork_section );
for (i = 0; i < atfork_count; i++) if (atfork_child[i]) atfork_child[i]();
}
else
{
for (i = 0; i < atfork_count; i++) if (atfork_parent[i]) atfork_parent[i]();
RtlLeaveCriticalSection( &atfork_section );
}
return pid;
}
strong_alias(__fork, fork);
/***** MUTEXES *****/
int __pthread_mutex_init(pthread_mutex_t *mutex,
const pthread_mutexattr_t *mutexattr)
{
/* glibc has a tendency to initialize mutexes very often, even
in situations where they are not really used later on.
As for us, initializing a mutex is very expensive, we postpone
the real initialization until the time the mutex is first used. */
((wine_mutex)mutex)->critsect = NULL;
return 0;
}
strong_alias(__pthread_mutex_init, pthread_mutex_init);
static void mutex_real_init( pthread_mutex_t *mutex )
{
CRITICAL_SECTION *critsect = HeapAlloc(GetProcessHeap(), 0, sizeof(CRITICAL_SECTION));
RtlInitializeCriticalSection(critsect);
if (InterlockedCompareExchangePointer((void**)&(((wine_mutex)mutex)->critsect),critsect,NULL) != NULL) {
/* too late, some other thread already did it */
RtlDeleteCriticalSection(critsect);
HeapFree(GetProcessHeap(), 0, critsect);
}
}
int __pthread_mutex_lock(pthread_mutex_t *mutex)
{
if (!init_done) return 0;
if (!((wine_mutex)mutex)->critsect)
mutex_real_init( mutex );
RtlEnterCriticalSection(((wine_mutex)mutex)->critsect);
return 0;
}
strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
int __pthread_mutex_trylock(pthread_mutex_t *mutex)
{
if (!init_done) return 0;
if (!((wine_mutex)mutex)->critsect)
mutex_real_init( mutex );
if (!RtlTryEnterCriticalSection(((wine_mutex)mutex)->critsect)) {
errno = EBUSY;
return -1;
}
return 0;
}
strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
int __pthread_mutex_unlock(pthread_mutex_t *mutex)
{
if (!((wine_mutex)mutex)->critsect) return 0;
RtlLeaveCriticalSection(((wine_mutex)mutex)->critsect);
return 0;
}
strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
int __pthread_mutex_destroy(pthread_mutex_t *mutex)
{
if (!((wine_mutex)mutex)->critsect) return 0;
if (((wine_mutex)mutex)->critsect->RecursionCount) {
#if 0 /* there seems to be a bug in libc6 that makes this a bad idea */
return EBUSY;
#else
while (((wine_mutex)mutex)->critsect->RecursionCount)
RtlLeaveCriticalSection(((wine_mutex)mutex)->critsect);
#endif
}
RtlDeleteCriticalSection(((wine_mutex)mutex)->critsect);
HeapFree(GetProcessHeap(), 0, ((wine_mutex)mutex)->critsect);
((wine_mutex)mutex)->critsect = NULL;
return 0;
}
strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy);
/***** MUTEX ATTRIBUTES *****/
/* just dummies, since critical sections are always recursive */
int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
{
return 0;
}
strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init);
int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
{
return 0;
}
strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy);
int __pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
{
return 0;
}
strong_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
int __pthread_mutexattr_getkind_np(pthread_mutexattr_t *attr, int *kind)
{
*kind = PTHREAD_MUTEX_RECURSIVE;
return 0;
}
strong_alias(__pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
{
return 0;
}
strong_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype);
int __pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *kind)
{
*kind = PTHREAD_MUTEX_RECURSIVE;
return 0;
}
strong_alias(__pthread_mutexattr_gettype, pthread_mutexattr_gettype);
/***** THREAD-SPECIFIC VARIABLES (KEYS) *****/
int __pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
{
static LONG keycnt = FIRST_KEY;
*key = InterlockedExchangeAdd(&keycnt, 1);
return 0;
}
strong_alias(__pthread_key_create, pthread_key_create);
int __pthread_key_delete(pthread_key_t key)
{
return 0;
}
strong_alias(__pthread_key_delete, pthread_key_delete);
int __pthread_setspecific(pthread_key_t key, const void *pointer)
{
pthread_descr descr = __pthread_thread_self();
descr->key_data[key] = pointer;
return 0;
}
strong_alias(__pthread_setspecific, pthread_setspecific);
void *__pthread_getspecific(pthread_key_t key)
{
pthread_descr descr = __pthread_thread_self();
return (void *)descr->key_data[key];
}
strong_alias(__pthread_getspecific, pthread_getspecific);
/* these are not exported, they are only used in the pthread_functions structure */
static int pthread_internal_tsd_set( int key, const void *pointer )
{
pthread_descr descr = __pthread_thread_self();
descr->tsd_data[key] = pointer;
return 0;
}
static void *pthread_internal_tsd_get( int key )
{
pthread_descr descr = __pthread_thread_self();
return (void *)descr->tsd_data[key];
}
static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
{
pthread_descr descr = __pthread_thread_self();
return (void **)&descr->tsd_data[key];
}
/***** "EXCEPTION" FRAMES *****/
/* not implemented right now */
void _pthread_cleanup_push(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
{
((wine_cleanup)buffer)->routine = routine;
((wine_cleanup)buffer)->arg = arg;
}
void _pthread_cleanup_pop(struct _pthread_cleanup_buffer *buffer, int execute)
{
if (execute) (*(((wine_cleanup)buffer)->routine))(((wine_cleanup)buffer)->arg);
}
void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
{
_pthread_cleanup_push(buffer, routine, arg);
}
void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *buffer, int execute)
{
_pthread_cleanup_pop(buffer, execute);
}
void __pthread_cleanup_upto(jmp_buf target, char *frame)
{
/* FIXME */
}
/***** CONDITIONS *****/
/* not implemented right now */
int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
{
P_OUTPUT("FIXME:pthread_cond_init\n");
return 0;
}
strong_alias(__pthread_cond_init, pthread_cond_init);
int __pthread_cond_destroy(pthread_cond_t *cond)
{
P_OUTPUT("FIXME:pthread_cond_destroy\n");
return 0;
}
strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
int __pthread_cond_signal(pthread_cond_t *cond)
{
P_OUTPUT("FIXME:pthread_cond_signal\n");
return 0;
}
strong_alias(__pthread_cond_signal, pthread_cond_signal);
int __pthread_cond_broadcast(pthread_cond_t *cond)
{
P_OUTPUT("FIXME:pthread_cond_broadcast\n");
return 0;
}
strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
{
P_OUTPUT("FIXME:pthread_cond_wait\n");
return 0;
}
strong_alias(__pthread_cond_wait, pthread_cond_wait);
int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
{
P_OUTPUT("FIXME:pthread_cond_timedwait\n");
return 0;
}
strong_alias(__pthread_cond_timedwait, pthread_cond_timedwait);
/**** CONDITION ATTRIBUTES *****/
/* not implemented right now */
int pthread_condattr_init(pthread_condattr_t *attr)
{
return 0;
}
int pthread_condattr_destroy(pthread_condattr_t *attr)
{
return 0;
}
#if (__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 2)
/***** READ-WRITE LOCKS *****/
static void rwlock_real_init(pthread_rwlock_t *rwlock)
{
RTL_RWLOCK *lock = HeapAlloc(GetProcessHeap(), 0, sizeof(RTL_RWLOCK));
RtlInitializeResource(lock);
if (InterlockedCompareExchangePointer((void**)&(((wine_rwlock)rwlock)->lock),lock,NULL) != NULL) {
/* too late, some other thread already did it */
RtlDeleteResource(lock);
HeapFree(GetProcessHeap(), 0, lock);
}
}
int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
{
((wine_rwlock)rwlock)->lock = NULL;
return 0;
}
strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
{
if (!((wine_rwlock)rwlock)->lock) return 0;
RtlDeleteResource(((wine_rwlock)rwlock)->lock);
HeapFree(GetProcessHeap(), 0, ((wine_rwlock)rwlock)->lock);
return 0;
}
strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
{
if (!init_done) return 0;
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
while(TRUE)
if (RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, TRUE))
return 0;
}
strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
{
if (!init_done) return 0;
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
if (!RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, FALSE)) {
errno = EBUSY;
return -1;
}
return 0;
}
strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
{
if (!init_done) return 0;
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
while(TRUE)
if (RtlAcquireResourceExclusive(((wine_rwlock)rwlock)->lock, TRUE))
return 0;
}
strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
{
if (!init_done) return 0;
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
if (!RtlAcquireResourceExclusive(((wine_rwlock)rwlock)->lock, FALSE)) {
errno = EBUSY;
return -1;
}
return 0;
}
strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
{
if (!((wine_rwlock)rwlock)->lock) return 0;
RtlReleaseResource( ((wine_rwlock)rwlock)->lock );
return 0;
}
strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
/**** READ-WRITE LOCK ATTRIBUTES *****/
/* not implemented right now */
int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
{
return 0;
}
int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
{
return 0;
}
strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
{
*pref = 0;
return 0;
}
int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
{
return 0;
}
#endif /* glibc 2.2 */
/***** MISC *****/
pthread_t pthread_self(void)
{
return (pthread_t)GetCurrentThreadId();
}
int pthread_equal(pthread_t thread1, pthread_t thread2)
{
return (DWORD)thread1 == (DWORD)thread2;
}
void __pthread_do_exit(void *retval, char *currentframe)
{
/* FIXME: pthread cleanup */
ExitThread((DWORD)retval);
}
void __pthread_exit(void *retval)
{
__pthread_do_exit( retval, NULL );
}
strong_alias(__pthread_exit, pthread_exit);
int pthread_setcanceltype(int type, int *oldtype)
{
if (oldtype) *oldtype = PTHREAD_CANCEL_ASYNCHRONOUS;
return 0;
}
/***** ANTI-OVERRIDES *****/
/* pthreads tries to override these, point them back to libc */
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
{
if (!libc_sigaction)
{
libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
assert( libc_sigaction );
}
return libc_sigaction(signum, act, oldact);
}
static struct pthread_functions wine_pthread_functions =
{
NULL, /* ptr_pthread_fork */
NULL, /* FIXME */ /* ptr_pthread_attr_destroy */
NULL, /* FIXME */ /* ptr___pthread_attr_init_2_0 */
NULL, /* FIXME */ /* ptr___pthread_attr_init_2_1 */
NULL, /* FIXME */ /* ptr_pthread_attr_getdetachstate */
NULL, /* FIXME */ /* ptr_pthread_attr_setdetachstate */
NULL, /* FIXME */ /* ptr_pthread_attr_getinheritsched */
NULL, /* FIXME */ /* ptr_pthread_attr_setinheritsched */
NULL, /* FIXME */ /* ptr_pthread_attr_getschedparam */
pthread_attr_setschedparam, /* ptr_pthread_attr_setschedparam */
NULL, /* FIXME */ /* ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); */
NULL, /* FIXME */ /* ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); */
NULL, /* FIXME */ /* ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); */
NULL, /* FIXME */ /* ptr_pthread_attr_setscope) (pthread_attr_t *, int); */
pthread_condattr_destroy, /* ptr_pthread_condattr_destroy */
pthread_condattr_init, /* ptr_pthread_condattr_init */
__pthread_cond_broadcast, /* ptr___pthread_cond_broadcast */
__pthread_cond_destroy, /* ptr___pthread_cond_destroy */
__pthread_cond_init, /* ptr___pthread_cond_init */
__pthread_cond_signal, /* ptr___pthread_cond_signal */
__pthread_cond_wait, /* ptr___pthread_cond_wait */
pthread_equal, /* ptr_pthread_equal */
__pthread_exit, /* ptr___pthread_exit */
NULL, /* FIXME */ /* ptr_pthread_getschedparam */
NULL, /* FIXME */ /* ptr_pthread_setschedparam */
__pthread_mutex_destroy, /* ptr_pthread_mutex_destroy */
__pthread_mutex_init, /* ptr_pthread_mutex_init */
__pthread_mutex_lock, /* ptr_pthread_mutex_lock */
__pthread_mutex_trylock, /* ptr_pthread_mutex_trylock */
__pthread_mutex_unlock, /* ptr_pthread_mutex_unlock */
pthread_self, /* ptr_pthread_self */
NULL, /* FIXME */ /* ptr_pthread_setcancelstate */
pthread_setcanceltype, /* ptr_pthread_setcanceltype */
__pthread_do_exit, /* ptr_pthread_do_exit */
__pthread_cleanup_upto, /* ptr_pthread_cleanup_upto */
__pthread_thread_self, /* ptr_pthread_thread_self */
pthread_internal_tsd_set, /* ptr_pthread_internal_tsd_set */
pthread_internal_tsd_get, /* ptr_pthread_internal_tsd_get */
pthread_internal_tsd_address, /* ptr_pthread_internal_tsd_address */
NULL, /* ptr_pthread_sigaction */
NULL, /* ptr_pthread_sigwait */
NULL /* ptr_pthread_raise */
};
#else /* __GLIBC__ || __FREEBSD__ */
void PTHREAD_init_thread(void) { }
void PTHREAD_init_done(void) { }
#endif /* __GLIBC__ || __FREEBSD__ */
#else /* HAVE_NPTL */
void PTHREAD_init_done(void)
{
}
#endif /* HAVE_NPTL */
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