1e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#include "stlport_prefix.h" 2e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 3e9629bad30a9f478b336ab46b8e6e02f7f87af46Evan Chu#if defined(__unix) && defined(__GNUC__) 4e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 5e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifdef __FreeBSD__ 6e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project# include <osreldate.h> 7e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 8e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 9e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#if (defined(__FreeBSD__) && (__FreeBSD_version < 503001)) || defined(__sun) || defined (__hpux) 10e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* Note: __cxa_finalize and __cxa_atexit present in libc in FreeBSD 5.3 */ 11e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 12e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#include <stdlib.h> 13e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#include <stdio.h> 14e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#include <pthread.h> 15e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 16e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* __asm__ (".symver " "__cxa_finalize" "," "__cxa_finalize" "@" "STLPORT_5_0_0"); */ 17e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* __asm__ (".symver " "__cxa_finalize" "," "__cxa_finalize" "@@" "STLPORT_5_0_0"); */ 18e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 195c65c3a0f42e174e47fecd4e569606003217ff4eMartijn Coenen/* Not atomic! */ 20e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* But we can use static mutexes here: I hope that performance issue isn't very 21e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project significant on unloading (for only few calls, ~10) - ptr */ 22e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 23e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* 24e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \ 25e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ({ __typeof (mem) __gmemp = (mem); \ 26e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project __typeof (*mem) __gnewval = (newval); \ 27e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project \ 28e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project *__gmemp == (oldval) ? (*__gmemp = __gnewval, 0) : 1; }) 29e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project*/ 30e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 31e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectenum { 32e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ef_free, /* `ef_free' MUST be zero! */ 33e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ef_us, 34e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ef_on, 35e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ef_at, 36e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project ef_cxa 37e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project}; 38e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 39e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstruct exit_function 40e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project{ 41e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project /* `flavour' should be of type of the `enum' above but since we need 427c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu this element in an atomic operation we have to use `long int'. */ 437c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu long int flavor; 447c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu union { 457c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu void (*at)(void); 467c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu struct { 477c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu void (*fn)(int status, void *arg); 487c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu void *arg; 497c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu } on; 507c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu struct { 51e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project void (*fn)(void *arg, int status); 52e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project void *arg; 53e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project void *dso_handle; 54e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } cxa; 55e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } func; 56e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project}; 57e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 58e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstruct exit_function_list 59e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project{ 60e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project struct exit_function_list *next; 61e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project size_t idx; 627c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu struct exit_function fns[32]; 63e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project}; 64e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 65e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstruct exit_function *__new_exitfn (void); 66e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 67e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* Register a function to be called by exit or when a shared library 68e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project is unloaded. This function is only called from code generated by 69e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project the C++ compiler. */ 70e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectint __cxa_atexit(void (*func)(void *), void *arg, void *d) 71e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project{ 72e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project struct exit_function *new = __new_exitfn (); 73e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 74e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if ( new == NULL ) 75e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project return -1; 76e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 77e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project new->flavor = ef_cxa; 78e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project new->func.cxa.fn = (void (*) (void *, int)) func; 79e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project new->func.cxa.arg = arg; 80e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project new->func.cxa.dso_handle = d; 81e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project return 0; 82e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project} 83e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 84e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 85e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* We change global data, so we need locking. */ 86e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifdef __linux__ 87e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstatic pthread_mutex_t lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; 88e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 89e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* #ifdef __FreeBSD__ */ 90e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#if 0 91e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstatic pthread_mutex_t lock = 92e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project { PTHREAD_MUTEX_RECURSIVE /* PTHREAD_MUTEX_DEFAULT */, PTHREAD_PRIO_NONE, {NULL,NULL}, 93e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project NULL, { NULL }, /* MUTEX_FLAGS_PRIVATE */ 0x1, 0, 0, 0, {NULL, NULL}, 94e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project { 0, 0, 0, 0 } }; 95e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 96e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifdef __sun 97e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstatic pthread_mutex_t lock = 98e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project {{0, 0, 0, PTHREAD_MUTEX_RECURSIVE, _MUTEX_MAGIC}, {{{0}}}, 0}; 99e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 100e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifdef __hpux 101e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstatic pthread_mutex_t lock = PTHREAD_MUTEX_RECURSIVE_INITIALIZER_NP; 102e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project# ifdef __ia64 103e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectvoid *__dso_handle = (void *) &__dso_handle; 104e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project# endif 105e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 106e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 107e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 108e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstatic struct exit_function_list initial; 109e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstruct exit_function_list *__exit_funcs = &initial; 1107c69b2723b60a59df4aaa58b13985b3483b291bfEvan Chu 111e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectstruct exit_function *__new_exitfn(void) 112e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project{ 113e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project struct exit_function_list *l; 114e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project size_t i = 0; 115e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 116e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifndef __FreeBSD__ 117e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project pthread_mutex_lock( &lock ); 118e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 119e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 120e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project for (l = __exit_funcs; l != NULL; l = l->next) { 121e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project for (i = 0; i < l->idx; ++i) 122e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if (l->fns[i].flavor == ef_free) 123e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project break; 124e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if ( i < l->idx ) 125e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project break; 126e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 127e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if (l->idx < sizeof (l->fns) / sizeof (l->fns[0])) { 128e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project i = l->idx++; 129e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project break; 130e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 131e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 132e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 133e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if (l == NULL) { 134e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project l = (struct exit_function_list *)malloc( sizeof(struct exit_function_list) ); 135e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if (l != NULL) { 136e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project l->next = __exit_funcs; 137e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project __exit_funcs = l; 138e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 139e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project l->idx = 1; 140e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project i = 0; 141e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 142e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 143e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 144e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project /* Mark entry as used, but we don't know the flavor now. */ 145e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if ( l != NULL ) 146e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project l->fns[i].flavor = ef_us; 147e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 148e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifndef __FreeBSD__ 149e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project pthread_mutex_unlock( &lock ); 150e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 151e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 152e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project return l == NULL ? NULL : &l->fns[i]; 153e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project} 154e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 155e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* If D is non-NULL, call all functions registered with `__cxa_atexit' 156e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project with the same dso handle. Otherwise, if D is NULL, call all of the 157e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project registered handlers. */ 158e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 159e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* 160e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project * Note, that original __cxa_finalize don't use lock, but use __exit_funcs 161e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project * i.e. global data. 162e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project */ 163e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Projectvoid __cxa_finalize(void *d) 164e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project{ 165e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project struct exit_function_list *funcs; 166e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 167e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifndef __FreeBSD__ 168e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project pthread_mutex_lock( &lock ); 169e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 170e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 171e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project for (funcs = __exit_funcs; funcs; funcs = funcs->next) { 172e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project struct exit_function *f; 173e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 174e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project for (f = &funcs->fns[funcs->idx - 1]; f >= &funcs->fns[0]; --f) { 175e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if ( (d == NULL || d == f->func.cxa.dso_handle) && (f->flavor == ef_cxa) ) { 176e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project f->flavor = ef_free; 177e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project (*f->func.cxa.fn) (f->func.cxa.arg, 0); 178e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 179e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 180e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project } 181e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 182e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project /* Remove the registered fork handlers. We do not have to 183e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project unregister anything if the program is going to terminate anyway. */ 184e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifdef UNREGISTER_ATFORK 185e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project if (d != NULL) 186e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project UNREGISTER_ATFORK (d); 187e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 188e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#ifndef __FreeBSD__ 189e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project pthread_mutex_unlock( &lock ); 190e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif 191e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project} 192e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 193e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* __asm__ (".symver " "__cxa_finalize" "," "__cxa_finalize" "@@" "STLPORT_5_0_0"); */ 194e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project/* void __cxa_finalize(void *d) __attribute__ ((weak)); */ 195e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 196e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif /* OS name */ 197e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project#endif /* __unix */ 198e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project 199e9df6ba5a8fcccf306a80b1670b423be8fe7746The Android Open Source Project