/* * 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 #include #include #include #include #ifdef HAVE_UNISTD_H # include #endif #include #include #ifdef HAVE_SYS_SOCKET_H # include #endif #ifdef HAVE_SYS_MMAN_H #include #endif #ifdef HAVE_NETINET_IN_H # include #endif #ifdef HAVE_ARPA_NAMESER_H # include #endif #ifdef HAVE_RESOLV_H # include #endif #ifdef HAVE_VALGRIND_MEMCHECK_H #include #endif #ifdef HAVE_SYS_SYSCALL_H # include #endif #ifdef HAVE_SCHED_H #include #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 HAVE_VALGRIND_MEMCHECK_H 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 */ const struct wine_pthread_functions pthread_functions = { init_process, init_thread, create_thread, init_current_teb, get_current_teb, exit_thread, abort_thread, sigprocmask }; /* 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__) */