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wine/loader/kthread.c

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/*
* pthread emulation based on kernel threads
*
* We can't use pthreads directly, so why not let libcs
* that want pthreads use Wine's own threading instead...
*
* Copyright 1999 Ove Kåven
* Copyright 2003 Alexandre Julliard
*
* 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 "config.h"
#include "wine/port.h"
struct _pthread_cleanup_buffer;
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <signal.h>
#include <setjmp.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <string.h>
#include <sys/types.h>
#ifdef 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_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
#ifdef HAVE_VALGRIND_VALGRIND_H
#include <valgrind/valgrind.h>
#endif
#ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
#endif
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif
#include "wine/library.h"
#include "wine/pthread.h"
#define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
#define PSTR(str) __ASM_NAME(#str)
static struct wine_pthread_callbacks funcs;
/* thread descriptor */
#define FIRST_KEY 0
#define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
#define MAX_TSD 16
struct pthread_descr_struct
{
char dummy[2048];
int thread_errno;
int thread_h_errno;
int cancel_state;
int cancel_type;
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;
if (!funcs.ptr_get_thread_data) return &initial_descr;
descr = funcs.ptr_get_thread_data();
if (!descr) return &initial_descr;
return descr;
}
static int (*libc_uselocale)(int set);
static int *libc_multiple_threads;
/***********************************************************************
* __errno_location/__error/__errno/___errno/__thr_errno
*
* Get the per-thread errno location.
*/
int *__errno_location(void) /* Linux */
{
pthread_descr descr = __pthread_thread_self();
return &descr->thread_errno;
}
int *__error(void) { return __errno_location(); } /* FreeBSD */
int *__errno(void) { return __errno_location(); } /* NetBSD */
int *___errno(void) { return __errno_location(); } /* Solaris */
int *__thr_errno(void) { return __errno_location(); } /* UnixWare */
/***********************************************************************
* __h_errno_location
*
* Get the per-thread h_errno location.
*/
int *__h_errno_location(void)
{
pthread_descr descr = __pthread_thread_self();
return &descr->thread_h_errno;
}
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 = wine_dlsym( RTLD_NEXT, symbol, NULL, 0 );
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 VALGRIND_DISCARD_TRANSLATIONS
VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
# endif
#endif /* __GLIBC__ && __i386__ */
}
/* temporary stacks used on thread exit */
#define TEMP_STACK_SIZE 1024
#define NB_TEMP_STACKS 8
static char temp_stacks[NB_TEMP_STACKS][TEMP_STACK_SIZE];
static int next_temp_stack; /* next temp stack to use */
/***********************************************************************
* get_temp_stack
*
* Get a temporary stack address to run the thread exit code on.
*/
static inline char *get_temp_stack(void)
{
unsigned int next = interlocked_xchg_add( &next_temp_stack, 1 );
return temp_stacks[next % NB_TEMP_STACKS] + TEMP_STACK_SIZE;
}
/***********************************************************************
* cleanup_thread
*
* Cleanup the remains of a thread. Runs on a temporary stack.
*/
static void cleanup_thread( void *ptr )
{
/* copy the info structure since it is on the stack we will free */
struct wine_pthread_thread_info info = *(struct wine_pthread_thread_info *)ptr;
wine_ldt_free_fs( info.teb_sel );
if (info.stack_size) munmap( info.stack_base, info.stack_size );
if (info.teb_size) munmap( info.teb_base, info.teb_size );
_exit( info.exit_status );
}
/***********************************************************************
* init_process
*
* Initialization for a newly created process.
*/
static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
{
memcpy( &funcs, callbacks, min( size, sizeof(funcs) ));
funcs.ptr_set_thread_data( &initial_descr );
}
/***********************************************************************
* init_thread
*
* Initialization for a newly created thread.
*/
static void init_thread( struct wine_pthread_thread_info *info )
{
struct pthread_descr_struct *descr;
if (funcs.ptr_set_thread_data)
{
descr = calloc( 1, sizeof(*descr) );
funcs.ptr_set_thread_data( descr );
if (libc_multiple_threads) *libc_multiple_threads = 1;
}
else /* first thread */
{
descr = &initial_descr;
writejump( "__errno_location", __errno_location );
writejump( "__h_errno_location", __h_errno_location );
writejump( "__res_state", __res_state );
}
descr->cancel_state = PTHREAD_CANCEL_ENABLE;
descr->cancel_type = PTHREAD_CANCEL_ASYNCHRONOUS;
if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
}
/***********************************************************************
* create_thread
*/
static int create_thread( struct wine_pthread_thread_info *info )
{
if (!info->stack_base)
{
info->stack_base = wine_anon_mmap( NULL, info->stack_size, PROT_READ | PROT_WRITE, 0 );
if (info->stack_base == (void *)-1) return -1;
}
#ifdef HAVE_CLONE
if (clone( (int (*)(void *))info->entry, (char *)info->stack_base + info->stack_size,
CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, info ) < 0)
return -1;
return 0;
#elif defined(HAVE_RFORK)
{
void **sp = (void **)((char *)info->stack_base + info->stack_size);
*--sp = info;
*--sp = 0;
*--sp = info->entry;
__asm__ __volatile__(
"pushl %2;\n\t" /* flags */
"pushl $0;\n\t" /* 0 ? */
"movl %1,%%eax;\n\t" /* SYS_rfork */
".byte 0x9a; .long 0; .word 7;\n\t" /* lcall 7:0... FreeBSD syscall */
"cmpl $0, %%edx;\n\t"
"je 1f;\n\t"
"movl %0,%%esp;\n\t" /* child -> new thread */
"ret;\n"
"1:\n\t" /* parent -> caller thread */
"addl $8,%%esp" :
: "r" (sp), "r" (SYS_rfork), "r" (RFPROC | RFMEM | RFTHREAD)
: "eax", "edx");
return 0;
}
#endif
return -1;
}
/***********************************************************************
* init_current_teb
*
* Set the current TEB for a new thread.
*/
static void init_current_teb( struct wine_pthread_thread_info *info )
{
/* On the i386, the current thread is in the %fs register */
LDT_ENTRY fs_entry;
wine_ldt_set_base( &fs_entry, info->teb_base );
wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
wine_ldt_init_fs( info->teb_sel, &fs_entry );
/* set pid and tid */
info->pid = getpid();
info->tid = -1;
}
/***********************************************************************
* get_current_teb
*/
static void *get_current_teb(void)
{
void *ret;
__asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
return ret;
}
/***********************************************************************
* exit_thread
*/
static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
{
wine_switch_to_stack( cleanup_thread, info, get_temp_stack() );
}
/***********************************************************************
* abort_thread
*/
static void DECLSPEC_NORETURN abort_thread( long status )
{
_exit( status );
}
/***********************************************************************
* pthread_functions
*/
static const struct wine_pthread_functions pthread_functions =
{
init_process,
init_thread,
create_thread,
init_current_teb,
get_current_teb,
exit_thread,
abort_thread,
sigprocmask
};
void init_pthread_functions(void)
{
wine_pthread_set_functions( &pthread_functions, sizeof(pthread_functions) );
}
/* 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(HAVE_PTHREAD_H) && (defined(__GLIBC__) || defined(__FreeBSD__))
/* 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))
struct fork_block;
/* 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);
int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
void (*ptr__pthread_cleanup_push) (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg);
void (*ptr__pthread_cleanup_pop) (struct _pthread_cleanup_buffer * buffer, int execute);
};
static pid_t (*libc_fork)(void);
static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
static struct pthread_functions libc_pthread_functions;
strong_alias(__pthread_thread_self, pthread_thread_self);
/* redefine this to prevent libpthread from overriding our function pointers */
int *__libc_pthread_init( const struct pthread_functions *funcs )
{
return libc_multiple_threads;
}
typedef struct _wine_cleanup {
void (*routine)(void *);
void *arg;
} *wine_cleanup;
int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
(*start_routine)(void *), void* arg)
{
assert( funcs.ptr_pthread_create );
return funcs.ptr_pthread_create( thread, attr, start_routine, arg );
}
int pthread_cancel(pthread_t thread)
{
assert( funcs.ptr_pthread_cancel );
return funcs.ptr_pthread_cancel( thread );
}
int pthread_join(pthread_t thread, void **value_ptr)
{
assert( funcs.ptr_pthread_join );
return funcs.ptr_pthread_join( thread, value_ptr );
}
int pthread_detach(pthread_t thread)
{
assert( funcs.ptr_pthread_detach );
return funcs.ptr_pthread_detach( thread );
}
/* 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 */
}
/* FIXME */
int pthread_attr_setstack(pthread_attr_t *attr, void *addr, size_t size)
{
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;
int once_now;
memcpy(&once_now,&the_once,sizeof(once_now));
if (interlocked_cmpxchg((int*)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 pthread_mutex_t atfork_mutex = PTHREAD_MUTEX_INITIALIZER;
typedef void (*atfork_handler)(void);
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))
{
pthread_mutex_lock( &atfork_mutex );
assert( atfork_count < MAX_ATFORK );
atfork_prepare[atfork_count] = prepare;
atfork_parent[atfork_count] = parent;
atfork_child[atfork_count] = child;
atfork_count++;
pthread_mutex_unlock( &atfork_mutex );
return 0;
}
strong_alias(__pthread_atfork, pthread_atfork);
pid_t __fork(void)
{
pid_t pid;
int i;
if (!libc_fork)
{
libc_fork = wine_dlsym( RTLD_NEXT, "fork", NULL, 0 );
assert( libc_fork );
}
pthread_mutex_lock( &atfork_mutex );
/* 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()))
{
pthread_mutex_init( &atfork_mutex, NULL );
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]();
pthread_mutex_unlock( &atfork_mutex );
}
return pid;
}
strong_alias(__fork, fork);
/***** MUTEXES *****/
int __pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr)
{
if (!funcs.ptr_pthread_mutex_init) return 0;
return funcs.ptr_pthread_mutex_init( mutex, mutexattr );
}
strong_alias(__pthread_mutex_init, pthread_mutex_init);
int __pthread_mutex_lock(pthread_mutex_t *mutex)
{
if (!funcs.ptr_pthread_mutex_lock) return 0;
return funcs.ptr_pthread_mutex_lock( mutex );
}
strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
int __pthread_mutex_trylock(pthread_mutex_t *mutex)
{
if (!funcs.ptr_pthread_mutex_trylock) return 0;
return funcs.ptr_pthread_mutex_trylock( mutex );
}
strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
int __pthread_mutex_unlock(pthread_mutex_t *mutex)
{
if (!funcs.ptr_pthread_mutex_unlock) return 0;
return funcs.ptr_pthread_mutex_unlock( mutex );
}
strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
int __pthread_mutex_destroy(pthread_mutex_t *mutex)
{
if (!funcs.ptr_pthread_mutex_destroy) return 0;
return funcs.ptr_pthread_mutex_destroy( mutex );
}
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(const 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 int keycnt = FIRST_KEY;
*key = interlocked_xchg_add(&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);
static int pthread_internal_tsd_set( int key, const void *pointer )
{
pthread_descr descr = __pthread_thread_self();
descr->tsd_data[key] = pointer;
return 0;
}
int (*__libc_internal_tsd_set)(int, const void *) = pthread_internal_tsd_set;
static void *pthread_internal_tsd_get( int key )
{
pthread_descr descr = __pthread_thread_self();
return (void *)descr->tsd_data[key];
}
void* (*__libc_internal_tsd_get)(int) = pthread_internal_tsd_get;
static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
{
pthread_descr descr = __pthread_thread_self();
return (void **)&descr->tsd_data[key];
}
void** (*__libc_internal_tsd_address)(int) = pthread_internal_tsd_address;
/***** "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 *****/
int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
{
if (!funcs.ptr_pthread_cond_init) return 0;
return funcs.ptr_pthread_cond_init(cond, cond_attr);
}
strong_alias(__pthread_cond_init, pthread_cond_init);
int __pthread_cond_destroy(pthread_cond_t *cond)
{
if (!funcs.ptr_pthread_cond_destroy) return 0;
return funcs.ptr_pthread_cond_destroy(cond);
}
strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
int __pthread_cond_signal(pthread_cond_t *cond)
{
if (!funcs.ptr_pthread_cond_signal) return 0;
return funcs.ptr_pthread_cond_signal(cond);
}
strong_alias(__pthread_cond_signal, pthread_cond_signal);
int __pthread_cond_broadcast(pthread_cond_t *cond)
{
if (!funcs.ptr_pthread_cond_broadcast) return 0;
return funcs.ptr_pthread_cond_broadcast(cond);
}
strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
{
if (!funcs.ptr_pthread_cond_wait) return 0;
return funcs.ptr_pthread_cond_wait(cond, mutex);
}
strong_alias(__pthread_cond_wait, pthread_cond_wait);
int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
{
if (!funcs.ptr_pthread_cond_timedwait) return 0;
return funcs.ptr_pthread_cond_timedwait(cond, mutex, abstime);
}
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;
}
/***** READ-WRITE LOCKS *****/
int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
{
assert( funcs.ptr_pthread_rwlock_init );
return funcs.ptr_pthread_rwlock_init( rwlock, rwlock_attr );
}
strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
{
assert( funcs.ptr_pthread_rwlock_destroy );
return funcs.ptr_pthread_rwlock_destroy( rwlock );
}
strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
{
if (!funcs.ptr_pthread_rwlock_rdlock) return 0;
return funcs.ptr_pthread_rwlock_rdlock( rwlock );
}
strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
{
assert( funcs.ptr_pthread_rwlock_tryrdlock );
return funcs.ptr_pthread_rwlock_tryrdlock( rwlock );
}
strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
{
assert( funcs.ptr_pthread_rwlock_wrlock );
return funcs.ptr_pthread_rwlock_wrlock( rwlock );
}
strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
{
assert( funcs.ptr_pthread_rwlock_trywrlock );
return funcs.ptr_pthread_rwlock_trywrlock( rwlock );
}
strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
{
if (!funcs.ptr_pthread_rwlock_unlock) return 0;
return funcs.ptr_pthread_rwlock_unlock( rwlock );
}
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;
}
/***** MISC *****/
pthread_t pthread_self(void)
{
assert( funcs.ptr_pthread_self );
return funcs.ptr_pthread_self();
}
int pthread_equal(pthread_t thread1, pthread_t thread2)
{
assert( funcs.ptr_pthread_equal );
return funcs.ptr_pthread_equal( thread1, thread2 );
}
void __pthread_do_exit(void *retval, char *currentframe)
{
assert( funcs.ptr_pthread_exit );
return funcs.ptr_pthread_exit( retval, currentframe );
}
void __pthread_exit(void *retval)
{
__pthread_do_exit( retval, NULL );
}
strong_alias(__pthread_exit, pthread_exit);
int pthread_setcancelstate(int state, int *oldstate)
{
pthread_descr descr = __pthread_thread_self();
if (oldstate) *oldstate = descr->cancel_state;
descr->cancel_state = state;
return 0;
}
int pthread_setcanceltype(int type, int *oldtype)
{
pthread_descr descr = __pthread_thread_self();
if (oldtype) *oldtype = descr->cancel_type;
descr->cancel_type = type;
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 = wine_dlsym( RTLD_NEXT, "sigaction", NULL, 0 );
assert( libc_sigaction );
}
return libc_sigaction(signum, act, oldact);
}
void __pthread_initialize(void)
{
static int done;
if (!done)
{
done = 1;
/* check for exported epoll_create to detect glibc versions that we cannot support */
if (wine_dlsym( RTLD_DEFAULT, "epoll_create", NULL, 0 ))
{
static const char warning[] =
"wine: glibc >= 2.3 without NPTL or TLS is not a supported combination.\n"
" It will most likely crash. Please upgrade to a glibc with NPTL support.\n";
write( 2, warning, sizeof(warning)-1 );
}
libc_fork = wine_dlsym( RTLD_NEXT, "fork", NULL, 0 );
libc_sigaction = wine_dlsym( RTLD_NEXT, "sigaction", NULL, 0 );
libc_uselocale = wine_dlsym( RTLD_DEFAULT, "uselocale", NULL, 0 );
libc_pthread_init = wine_dlsym( RTLD_NEXT, "__libc_pthread_init", NULL, 0 );
if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &libc_pthread_functions );
}
}
#ifdef __GNUC__
static void init(void) __attribute__((constructor));
static void init(void)
{
__pthread_initialize();
}
#endif
static struct pthread_functions libc_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 */
NULL, /* FIXME */ /* ptr_pthread_attr_setschedpolicy */
NULL, /* FIXME */ /* ptr_pthread_attr_getscope */
NULL, /* FIXME */ /* ptr_pthread_attr_setscope */
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 */
pthread_setcancelstate, /* 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 */
__pthread_cond_timedwait, /* ptr___pthread_cond_timedwait */
_pthread_cleanup_push, /* ptr__pthread_cleanup_push */
_pthread_cleanup_pop /* ptr__pthread_cleanup_pop */
};
#endif /* HAVE_PTHREAD_H && (__GLIBC__ || __FREEBSD__) */
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