diff options
Diffstat (limited to 'include/asterisk/lock.h')
| -rw-r--r-- | include/asterisk/lock.h | 1172 |
1 files changed, 128 insertions, 1044 deletions
diff --git a/include/asterisk/lock.h b/include/asterisk/lock.h index 32a36cacd..37e5c1577 100644 --- a/include/asterisk/lock.h +++ b/include/asterisk/lock.h @@ -1,7 +1,7 @@ /* * Asterisk -- An open source telephony toolkit. * - * Copyright (C) 1999 - 2006, Digium, Inc. + * Copyright (C) 1999 - 2010, Digium, Inc. * * Mark Spencer <markster@digium.com> * @@ -56,25 +56,6 @@ #endif #include "asterisk/logger.h" -/* internal macro to profile mutexes. Only computes the delay on - * non-blocking calls. - */ -#ifndef HAVE_MTX_PROFILE -#define __MTX_PROF(a) return pthread_mutex_lock((a)) -#else -#define __MTX_PROF(a) do { \ - int i; \ - /* profile only non-blocking events */ \ - ast_mark(mtx_prof, 1); \ - i = pthread_mutex_trylock((a)); \ - ast_mark(mtx_prof, 0); \ - if (!i) \ - return i; \ - else \ - return pthread_mutex_lock((a)); \ - } while (0) -#endif /* HAVE_MTX_PROFILE */ - #define AST_PTHREADT_NULL (pthread_t) -1 #define AST_PTHREADT_STOP (pthread_t) -2 @@ -92,26 +73,13 @@ #define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE #endif /* PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP */ -#ifdef DEBUG_THREADS - -#define __ast_mutex_logger(...) do { if (canlog) ast_log(LOG_ERROR, __VA_ARGS__); else fprintf(stderr, __VA_ARGS__); } while (0) - -#ifdef THREAD_CRASH -#define DO_THREAD_CRASH do { *((int *)(0)) = 1; } while(0) -#else -#define DO_THREAD_CRASH do { } while (0) -#endif - -#include <errno.h> -#include <string.h> -#include <stdio.h> - -#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE, 1, { NULL }, { 0 }, 0, { NULL }, { 0 }, PTHREAD_MUTEX_INIT_VALUE } -#define AST_MUTEX_INIT_VALUE_NOTRACKING \ - { PTHREAD_MUTEX_INIT_VALUE, 0, { NULL }, { 0 }, 0, { NULL }, { 0 }, PTHREAD_MUTEX_INIT_VALUE } - #define AST_MAX_REENTRANCY 10 +/*! \brief Structure for mutex and tracking information. + * + * We have tracking information in this structure regardless of DEBUG_THREADS being enabled. + * The information will just be ignored in the core if a module does not request it.. + */ struct ast_mutex_info { pthread_mutex_t mutex; /*! Track which thread holds this lock */ @@ -128,6 +96,93 @@ typedef struct ast_mutex_info ast_mutex_t; typedef pthread_cond_t ast_cond_t; +typedef pthread_rwlock_t ast_rwlock_t; + +int __ast_pthread_mutex_init(int track, const char *filename, int lineno, const char *func, const char *mutex_name, ast_mutex_t *t); +int __ast_pthread_mutex_destroy(const char *filename, int lineno, const char *func, const char *mutex_name, ast_mutex_t *t); +int __ast_pthread_mutex_lock(const char *filename, int lineno, const char *func, const char* mutex_name, ast_mutex_t *t); +int __ast_pthread_mutex_trylock(const char *filename, int lineno, const char *func, const char* mutex_name, ast_mutex_t *t); +int __ast_pthread_mutex_unlock(const char *filename, int lineno, const char *func, const char *mutex_name, ast_mutex_t *t); + +#define ast_mutex_init(pmutex) __ast_pthread_mutex_init(1, __FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex) +#define ast_mutex_init_notracking(pmutex) __ast_pthread_mutex_init(0, __FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex) +#define ast_mutex_destroy(a) __ast_pthread_mutex_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_mutex_trylock(a) __ast_pthread_mutex_trylock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) + +int __ast_cond_init(const char *filename, int lineno, const char *func, const char *cond_name, ast_cond_t *cond, pthread_condattr_t *cond_attr); +int __ast_cond_destroy(const char *filename, int lineno, const char *func, const char *cond_name, ast_cond_t *cond); +int __ast_cond_signal(const char *filename, int lineno, const char *func, const char *cond_name, ast_cond_t *cond); +int __ast_cond_broadcast(const char *filename, int lineno, const char *func, const char *cond_name, ast_cond_t *cond); +int __ast_cond_wait(const char *filename, int lineno, const char *func, const char *cond_name, const char *mutex_name, ast_cond_t *cond, ast_mutex_t *t); +int __ast_cond_timedwait(const char *filename, int lineno, const char *func, const char *cond_name, const char *mutex_name, ast_cond_t *cond, ast_mutex_t *t, const struct timespec *abstime); + +#define ast_cond_init(cond, attr) __ast_cond_init(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond, attr) +#define ast_cond_destroy(cond) __ast_cond_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) +#define ast_cond_signal(cond) __ast_cond_signal(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) +#define ast_cond_broadcast(cond) __ast_cond_broadcast(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) +#define ast_cond_wait(cond, mutex) __ast_cond_wait(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, #mutex, cond, mutex) +#define ast_cond_timedwait(cond, mutex, time) __ast_cond_timedwait(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, #mutex, cond, mutex, time) + +int __ast_rwlock_init(const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *prwlock); +int __ast_rwlock_destroy(const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *prwlock); +int __ast_rwlock_tryrdlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock); +int __ast_rwlock_trywrlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock); +int __ast_rwlock_rdlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock); +int __ast_rwlock_wrlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock); +int __ast_rwlock_unlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock); +int __ast_rwlock_timedrdlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock, const struct timespec *abs_timeout); +int __ast_rwlock_timedwrlock(const char *file, int line, const char *func, const char *name, ast_rwlock_t *lock, const struct timespec *abs_timeout); + +#define ast_rwlock_init(rwlock) __ast_rwlock_init(__FILE__, __LINE__, __PRETTY_FUNCTION__, #rwlock, rwlock) +#define ast_rwlock_destroy(rwlock) __ast_rwlock_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #rwlock, rwlock) +#define ast_rwlock_rdlock(a) __ast_rwlock_rdlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_rwlock_wrlock(a) __ast_rwlock_wrlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_rwlock_tryrdlock(a) __ast_rwlock_tryrdlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_rwlock_trywrlock(a) __ast_rwlock_trywrlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_rwlock_unlock(a) __ast_rwlock_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) +#define ast_rwlock_timedrdlock(a, b) __ast_rwlock_timedrdlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a, b) +#define ast_rwlock_timedwrlock(a, b) __ast_rwlock_timedwrlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a, b) + +#ifdef DEBUG_THREADS + +#define __ast_mutex_logger(...) do { if (canlog) ast_log(LOG_ERROR, __VA_ARGS__); else fprintf(stderr, __VA_ARGS__); } while (0) + +#ifdef THREAD_CRASH +#define DO_THREAD_CRASH do { *((int *)(0)) = 1; } while(0) +#else +#define DO_THREAD_CRASH do { } while (0) +#endif + +#include <errno.h> +#include <string.h> +#include <stdio.h> + +/*! + * \brief Unlock a lock briefly + * + * used during deadlock avoidance, to preserve the original location where + * a lock was originally acquired. + */ +#define DEADLOCK_AVOIDANCE(lock) \ + do { \ + char __filename[80], __func[80], __mutex_name[80]; \ + int __lineno; \ + int __res = ast_find_lock_info(lock, __filename, sizeof(__filename), &__lineno, __func, sizeof(__func), __mutex_name, sizeof(__mutex_name)); \ + ast_mutex_unlock(lock); \ + usleep(1); \ + if (__res < 0) { /* Shouldn't ever happen, but just in case... */ \ + ast_mutex_lock(lock); \ + } else { \ + __ast_pthread_mutex_lock(__filename, __lineno, __func, __mutex_name, lock); \ + } \ + } while (0) + +#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE, 1, { NULL }, { 0 }, 0, { NULL }, { 0 }, PTHREAD_MUTEX_INIT_VALUE } +#define AST_MUTEX_INIT_VALUE_NOTRACKING \ + { PTHREAD_MUTEX_INIT_VALUE, 0, { NULL }, { 0 }, 0, { NULL }, { 0 }, PTHREAD_MUTEX_INIT_VALUE } + static pthread_mutex_t empty_mutex; enum ast_lock_type { @@ -194,26 +249,6 @@ int ast_find_lock_info(void *lock_addr, char *filename, size_t filename_size, in #define ast_find_lock_info(a,b,c,d,e,f,g,h) -1 #endif -/*! - * \brief Unlock a lock briefly - * - * used during deadlock avoidance, to preserve the original location where - * a lock was originally acquired. - */ -#define DEADLOCK_AVOIDANCE(lock) \ - do { \ - char __filename[80], __func[80], __mutex_name[80]; \ - int __lineno; \ - int __res = ast_find_lock_info(lock, __filename, sizeof(__filename), &__lineno, __func, sizeof(__func), __mutex_name, sizeof(__mutex_name)); \ - ast_mutex_unlock(lock); \ - usleep(1); \ - if (__res < 0) { /* Shouldn't ever happen, but just in case... */ \ - ast_mutex_lock(lock); \ - } else { \ - __ast_pthread_mutex_lock(__filename, __lineno, __func, __mutex_name, lock); \ - } \ - } while (0) - static void __attribute__((constructor)) init_empty_mutex(void) { memset(&empty_mutex, 0, sizeof(empty_mutex)); @@ -254,465 +289,6 @@ static inline void delete_reentrancy_cs(ast_mutex_t * p_ast_mutex) pthread_mutex_destroy(&p_ast_mutex->reentr_mutex); } -static inline int __ast_pthread_mutex_init(int track, const char *filename, int lineno, const char *func, - const char *mutex_name, ast_mutex_t *t) -{ - int res; - pthread_mutexattr_t attr; - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - - if ((t->mutex) != ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { -/* - int canlog = strcmp(filename, "logger.c") & track; - __ast_mutex_logger("%s line %d (%s): NOTICE: mutex '%s' is already initialized.\n", - filename, lineno, func, mutex_name); - DO_THREAD_CRASH; -*/ - return 0; - } - -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_reentrancy_init(t); - t->track = track; - - pthread_mutexattr_init(&attr); - pthread_mutexattr_settype(&attr, AST_MUTEX_KIND); - - res = pthread_mutex_init(&t->mutex, &attr); - pthread_mutexattr_destroy(&attr); - return res; -} - -#define ast_mutex_init(pmutex) __ast_pthread_mutex_init(1, __FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex) -#define ast_mutex_init_notracking(pmutex) \ - __ast_pthread_mutex_init(0, __FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex) - -#define ROFFSET ((t->reentrancy > 0) ? (t->reentrancy-1) : 0) -static inline int __ast_pthread_mutex_destroy(const char *filename, int lineno, const char *func, - const char *mutex_name, ast_mutex_t *t) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - /* Don't try to uninitialize non initialized mutex - * This may no effect on linux - * And always ganerate core on *BSD with - * linked libpthread - * This not error condition if the mutex created on the fly. - */ - __ast_mutex_logger("%s line %d (%s): NOTICE: mutex '%s' is uninitialized.\n", - filename, lineno, func, mutex_name); - return 0; - } -#endif - - res = pthread_mutex_trylock(&t->mutex); - switch (res) { - case 0: - pthread_mutex_unlock(&t->mutex); - break; - case EINVAL: - __ast_mutex_logger("%s line %d (%s): Error: attempt to destroy invalid mutex '%s'.\n", - filename, lineno, func, mutex_name); - break; - case EBUSY: - __ast_mutex_logger("%s line %d (%s): Error: attempt to destroy locked mutex '%s'.\n", - filename, lineno, func, mutex_name); - ast_reentrancy_lock(t); - __ast_mutex_logger("%s line %d (%s): Error: '%s' was locked here.\n", - t->file[ROFFSET], t->lineno[ROFFSET], t->func[ROFFSET], mutex_name); - ast_reentrancy_unlock(t); - break; - } - - if ((res = pthread_mutex_destroy(&t->mutex))) - __ast_mutex_logger("%s line %d (%s): Error destroying mutex %s: %s\n", - filename, lineno, func, mutex_name, strerror(res)); -#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP - else - t->mutex = PTHREAD_MUTEX_INIT_VALUE; -#endif - ast_reentrancy_lock(t); - t->file[0] = filename; - t->lineno[0] = lineno; - t->func[0] = func; - t->reentrancy = 0; - t->thread[0] = 0; - ast_reentrancy_unlock(t); - delete_reentrancy_cs(t); - - return res; -} - -static inline int __ast_pthread_mutex_lock(const char *filename, int lineno, const char *func, - const char* mutex_name, ast_mutex_t *t) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - /* Don't warn abount uninitialized mutex. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_pthread_mutex_init(t->track, filename, lineno, func, mutex_name, t); - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n", - filename, lineno, func, mutex_name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - if (t->track) - ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, &t->mutex); - -#ifdef DETECT_DEADLOCKS - { - time_t seconds = time(NULL); - time_t wait_time, reported_wait = 0; - do { -#ifdef HAVE_MTX_PROFILE - ast_mark(mtx_prof, 1); -#endif - res = pthread_mutex_trylock(&t->mutex); -#ifdef HAVE_MTX_PROFILE - ast_mark(mtx_prof, 0); -#endif - if (res == EBUSY) { - wait_time = time(NULL) - seconds; - if (wait_time > reported_wait && (wait_time % 5) == 0) { - __ast_mutex_logger("%s line %d (%s): Deadlock? waited %d sec for mutex '%s'?\n", - filename, lineno, func, (int) wait_time, mutex_name); - ast_reentrancy_lock(t); - __ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n", - t->file[ROFFSET], t->lineno[ROFFSET], - t->func[ROFFSET], mutex_name); - ast_reentrancy_unlock(t); - reported_wait = wait_time; - } - usleep(200); - } - } while (res == EBUSY); - } -#else -#ifdef HAVE_MTX_PROFILE - ast_mark(mtx_prof, 1); - res = pthread_mutex_trylock(&t->mutex); - ast_mark(mtx_prof, 0); - if (res) -#endif - res = pthread_mutex_lock(&t->mutex); -#endif /* DETECT_DEADLOCKS */ - - if (!res) { - ast_reentrancy_lock(t); - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = filename; - t->lineno[t->reentrancy] = lineno; - t->func[t->reentrancy] = func; - t->thread[t->reentrancy] = pthread_self(); - t->reentrancy++; - } else { - __ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n", - filename, lineno, func, mutex_name); - } - ast_reentrancy_unlock(t); - if (t->track) - ast_mark_lock_acquired(&t->mutex); - } else { - if (t->track) - ast_remove_lock_info(&t->mutex); - __ast_mutex_logger("%s line %d (%s): Error obtaining mutex: %s\n", - filename, lineno, func, strerror(res)); - DO_THREAD_CRASH; - } - - return res; -} - -static inline int __ast_pthread_mutex_trylock(const char *filename, int lineno, const char *func, - const char* mutex_name, ast_mutex_t *t) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - /* Don't warn abount uninitialized mutex. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_pthread_mutex_init(t->track, filename, lineno, func, mutex_name, t); - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n", - filename, lineno, func, mutex_name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - if (t->track) - ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, &t->mutex); - - if (!(res = pthread_mutex_trylock(&t->mutex))) { - ast_reentrancy_lock(t); - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = filename; - t->lineno[t->reentrancy] = lineno; - t->func[t->reentrancy] = func; - t->thread[t->reentrancy] = pthread_self(); - t->reentrancy++; - } else { - __ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n", - filename, lineno, func, mutex_name); - } - ast_reentrancy_unlock(t); - if (t->track) - ast_mark_lock_acquired(&t->mutex); - } else if (t->track) { - ast_mark_lock_failed(&t->mutex); - } - - return res; -} - -static inline int __ast_pthread_mutex_unlock(const char *filename, int lineno, const char *func, - const char *mutex_name, ast_mutex_t *t) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n", - filename, lineno, func, mutex_name); - res = __ast_pthread_mutex_init(t->track, filename, lineno, func, mutex_name, t); - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n", - filename, lineno, func, mutex_name); - } - return res; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_reentrancy_lock(t); - if (t->reentrancy && (t->thread[ROFFSET] != pthread_self())) { - __ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n", - filename, lineno, func, mutex_name); - __ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n", - t->file[ROFFSET], t->lineno[ROFFSET], t->func[ROFFSET], mutex_name); - DO_THREAD_CRASH; - } - - if (--t->reentrancy < 0) { - __ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n", - filename, lineno, func, mutex_name); - t->reentrancy = 0; - } - - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = NULL; - t->lineno[t->reentrancy] = 0; - t->func[t->reentrancy] = NULL; - t->thread[t->reentrancy] = 0; - } - ast_reentrancy_unlock(t); - - if (t->track) - ast_remove_lock_info(&t->mutex); - - if ((res = pthread_mutex_unlock(&t->mutex))) { - __ast_mutex_logger("%s line %d (%s): Error releasing mutex: %s\n", - filename, lineno, func, strerror(res)); - DO_THREAD_CRASH; - } - - return res; -} - -static inline int __ast_cond_init(const char *filename, int lineno, const char *func, - const char *cond_name, ast_cond_t *cond, pthread_condattr_t *cond_attr) -{ - return pthread_cond_init(cond, cond_attr); -} - -static inline int __ast_cond_signal(const char *filename, int lineno, const char *func, - const char *cond_name, ast_cond_t *cond) -{ - return pthread_cond_signal(cond); -} - -static inline int __ast_cond_broadcast(const char *filename, int lineno, const char *func, - const char *cond_name, ast_cond_t *cond) -{ - return pthread_cond_broadcast(cond); -} - -static inline int __ast_cond_destroy(const char *filename, int lineno, const char *func, - const char *cond_name, ast_cond_t *cond) -{ - return pthread_cond_destroy(cond); -} - -static inline int __ast_cond_wait(const char *filename, int lineno, const char *func, - const char *cond_name, const char *mutex_name, - ast_cond_t *cond, ast_mutex_t *t) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n", - filename, lineno, func, mutex_name); - res = __ast_pthread_mutex_init(t->track, filename, lineno, func, mutex_name, t); - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n", - filename, lineno, func, mutex_name); - } - return res; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_reentrancy_lock(t); - if (t->reentrancy && (t->thread[ROFFSET] != pthread_self())) { - __ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n", - filename, lineno, func, mutex_name); - __ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n", - t->file[ROFFSET], t->lineno[ROFFSET], t->func[ROFFSET], mutex_name); - DO_THREAD_CRASH; - } - - if (--t->reentrancy < 0) { - __ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n", - filename, lineno, func, mutex_name); - t->reentrancy = 0; - } - - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = NULL; - t->lineno[t->reentrancy] = 0; - t->func[t->reentrancy] = NULL; - t->thread[t->reentrancy] = 0; - } - ast_reentrancy_unlock(t); - - if (t->track) - ast_remove_lock_info(&t->mutex); - - if ((res = pthread_cond_wait(cond, &t->mutex))) { - __ast_mutex_logger("%s line %d (%s): Error waiting on condition mutex '%s'\n", - filename, lineno, func, strerror(res)); - DO_THREAD_CRASH; - } else { - ast_reentrancy_lock(t); - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = filename; - t->lineno[t->reentrancy] = lineno; - t->func[t->reentrancy] = func; - t->thread[t->reentrancy] = pthread_self(); - t->reentrancy++; - } else { - __ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n", - filename, lineno, func, mutex_name); - } - ast_reentrancy_unlock(t); - - if (t->track) - ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, &t->mutex); - } - - return res; -} - -static inline int __ast_cond_timedwait(const char *filename, int lineno, const char *func, - const char *cond_name, const char *mutex_name, ast_cond_t *cond, - ast_mutex_t *t, const struct timespec *abstime) -{ - int res; - int canlog = strcmp(filename, "logger.c") & t->track; - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized.\n", - filename, lineno, func, mutex_name); - res = __ast_pthread_mutex_init(t->track, filename, lineno, func, mutex_name, t); - if ((t->mutex) == ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { - __ast_mutex_logger("%s line %d (%s): Error: mutex '%s' is uninitialized and unable to initialize.\n", - filename, lineno, func, mutex_name); - } - return res; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_reentrancy_lock(t); - if (t->reentrancy && (t->thread[ROFFSET] != pthread_self())) { - __ast_mutex_logger("%s line %d (%s): attempted unlock mutex '%s' without owning it!\n", - filename, lineno, func, mutex_name); - __ast_mutex_logger("%s line %d (%s): '%s' was locked here.\n", - t->file[ROFFSET], t->lineno[ROFFSET], t->func[ROFFSET], mutex_name); - DO_THREAD_CRASH; - } - - if (--t->reentrancy < 0) { - __ast_mutex_logger("%s line %d (%s): mutex '%s' freed more times than we've locked!\n", - filename, lineno, func, mutex_name); - t->reentrancy = 0; - } - - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = NULL; - t->lineno[t->reentrancy] = 0; - t->func[t->reentrancy] = NULL; - t->thread[t->reentrancy] = 0; - } - ast_reentrancy_unlock(t); - - if (t->track) - ast_remove_lock_info(&t->mutex); - - if ((res = pthread_cond_timedwait(cond, &t->mutex, abstime)) && (res != ETIMEDOUT)) { - __ast_mutex_logger("%s line %d (%s): Error waiting on condition mutex '%s'\n", - filename, lineno, func, strerror(res)); - DO_THREAD_CRASH; - } else { - ast_reentrancy_lock(t); - if (t->reentrancy < AST_MAX_REENTRANCY) { - t->file[t->reentrancy] = filename; - t->lineno[t->reentrancy] = lineno; - t->func[t->reentrancy] = func; - t->thread[t->reentrancy] = pthread_self(); - t->reentrancy++; - } else { - __ast_mutex_logger("%s line %d (%s): '%s' really deep reentrancy!\n", - filename, lineno, func, mutex_name); - } - ast_reentrancy_unlock(t); - - if (t->track) - ast_store_lock_info(AST_MUTEX, filename, lineno, func, mutex_name, &t->mutex); - } - - return res; -} - -#define ast_mutex_destroy(a) __ast_pthread_mutex_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) -#define ast_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) -#define ast_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) -#define ast_mutex_trylock(a) __ast_pthread_mutex_trylock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a) -#define ast_cond_init(cond, attr) __ast_cond_init(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond, attr) -#define ast_cond_destroy(cond) __ast_cond_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) -#define ast_cond_signal(cond) __ast_cond_signal(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) -#define ast_cond_broadcast(cond) __ast_cond_broadcast(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, cond) -#define ast_cond_wait(cond, mutex) __ast_cond_wait(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, #mutex, cond, mutex) -#define ast_cond_timedwait(cond, mutex, time) __ast_cond_timedwait(__FILE__, __LINE__, __PRETTY_FUNCTION__, #cond, #mutex, cond, mutex, time) - #else /* !DEBUG_THREADS */ #define DEADLOCK_AVOIDANCE(lock) \ @@ -720,84 +296,12 @@ static inline int __ast_cond_timedwait(const char *filename, int lineno, const c usleep(1); \ ast_mutex_lock(lock); - -typedef pthread_mutex_t ast_mutex_t; - -#define AST_MUTEX_INIT_VALUE ((ast_mutex_t) PTHREAD_MUTEX_INIT_VALUE) +#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE } #define AST_MUTEX_INIT_VALUE_NOTRACKING \ - ((ast_mutex_t) PTHREAD_MUTEX_INIT_VALUE) - -#define ast_mutex_init_notracking(m) ast_mutex_init(m) - -static inline int ast_mutex_init(ast_mutex_t *pmutex) -{ - int res; - pthread_mutexattr_t attr; - - pthread_mutexattr_init(&attr); - pthread_mutexattr_settype(&attr, AST_MUTEX_KIND); - - res = pthread_mutex_init(pmutex, &attr); - pthread_mutexattr_destroy(&attr); - return res; -} - -#define ast_pthread_mutex_init(pmutex,a) pthread_mutex_init(pmutex,a) - -static inline int ast_mutex_unlock(ast_mutex_t *pmutex) -{ - return pthread_mutex_unlock(pmutex); -} - -static inline int ast_mutex_destroy(ast_mutex_t *pmutex) -{ - return pthread_mutex_destroy(pmutex); -} - -static inline int ast_mutex_lock(ast_mutex_t *pmutex) -{ - __MTX_PROF(pmutex); -} - -static inline int ast_mutex_trylock(ast_mutex_t *pmutex) -{ - return pthread_mutex_trylock(pmutex); -} - -typedef pthread_cond_t ast_cond_t; - -static inline int ast_cond_init(ast_cond_t *cond, pthread_condattr_t *cond_attr) -{ - return pthread_cond_init(cond, cond_attr); -} - -static inline int ast_cond_signal(ast_cond_t *cond) -{ - return pthread_cond_signal(cond); -} - -static inline int ast_cond_broadcast(ast_cond_t *cond) -{ - return pthread_cond_broadcast(cond); -} - -static inline int ast_cond_destroy(ast_cond_t *cond) -{ - return pthread_cond_destroy(cond); -} - -static inline int ast_cond_wait(ast_cond_t *cond, ast_mutex_t *t) -{ - return pthread_cond_wait(cond, t); -} - -static inline int ast_cond_timedwait(ast_cond_t *cond, ast_mutex_t *t, const struct timespec *abstime) -{ - return pthread_cond_timedwait(cond, t, abstime); -} - + { PTHREAD_MUTEX_INIT_VALUE } #endif /* !DEBUG_THREADS */ + #if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) /* If AST_MUTEX_INIT_W_CONSTRUCTORS is defined, use file scope destructors to destroy mutexes and create it on the fly. */ @@ -820,6 +324,32 @@ static void __attribute__((destructor)) fini_##mutex(void) \ scope ast_mutex_t mutex = init_val #endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ +#define AST_MUTEX_DEFINE_STATIC(mutex) __AST_MUTEX_DEFINE(static, mutex, AST_MUTEX_INIT_VALUE, 1) +#define AST_MUTEX_DEFINE_STATIC_NOTRACKING(mutex) __AST_MUTEX_DEFINE(static, mutex, AST_MUTEX_INIT_VALUE_NOTRACKING, 0) + + +/* Statically declared read/write locks */ +#ifdef HAVE_PTHREAD_RWLOCK_INITIALIZER +#define AST_RWLOCK_INIT_VALUE PTHREAD_RWLOCK_INITIALIZER +#define __AST_RWLOCK_DEFINE(scope, rwlock) \ + scope ast_rwlock_t rwlock = AST_RWLOCK_INIT_VALUE +#else /* !HAVE_PTHREAD_RWLOCK_INITIALIZER */ +#define AST_RWLOCK_INIT_VALUE NULL +#define __AST_RWLOCK_DEFINE(scope, rwlock) \ + scope ast_rwlock_t rwlock; \ +static void __attribute__((constructor)) init_##rwlock(void) \ +{ \ + ast_rwlock_init(&rwlock); \ +} \ +static void __attribute__((destructor)) fini_##rwlock(void) \ +{ \ + ast_rwlock_destroy(&rwlock); \ +} +#endif /* !HAVE_PTHREAD_RWLOCK_INITIALIZER */ + +#define AST_RWLOCK_DEFINE_STATIC(rwlock) __AST_RWLOCK_DEFINE(static, rwlock) + + #define pthread_mutex_t use_ast_mutex_t_instead_of_pthread_mutex_t #define pthread_mutex_lock use_ast_mutex_lock_instead_of_pthread_mutex_lock #define pthread_mutex_unlock use_ast_mutex_unlock_instead_of_pthread_mutex_unlock @@ -834,9 +364,6 @@ static void __attribute__((destructor)) fini_##mutex(void) \ #define pthread_cond_wait use_ast_cond_wait_instead_of_pthread_cond_wait #define pthread_cond_timedwait use_ast_cond_timedwait_instead_of_pthread_cond_timedwait -#define AST_MUTEX_DEFINE_STATIC(mutex) __AST_MUTEX_DEFINE(static, mutex, AST_MUTEX_INIT_VALUE, 1) -#define AST_MUTEX_DEFINE_STATIC_NOTRACKING(mutex) __AST_MUTEX_DEFINE(static, mutex, AST_MUTEX_INIT_VALUE_NOTRACKING, 0) - #define AST_MUTEX_INITIALIZER __use_AST_MUTEX_DEFINE_STATIC_rather_than_AST_MUTEX_INITIALIZER__ #define gethostbyname __gethostbyname__is__not__reentrant__use__ast_gethostbyname__instead__ @@ -845,435 +372,6 @@ static void __attribute__((destructor)) fini_##mutex(void) \ #define pthread_create __use_ast_pthread_create_instead__ #endif -typedef pthread_rwlock_t ast_rwlock_t; - -#ifdef HAVE_PTHREAD_RWLOCK_INITIALIZER -#define AST_RWLOCK_INIT_VALUE PTHREAD_RWLOCK_INITIALIZER -#else -#define AST_RWLOCK_INIT_VALUE NULL -#endif - -#ifdef DEBUG_THREADS - -#define ast_rwlock_init(rwlock) __ast_rwlock_init(__FILE__, __LINE__, __PRETTY_FUNCTION__, #rwlock, rwlock) - - -static inline int __ast_rwlock_init(const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *prwlock) -{ - int res; - pthread_rwlockattr_t attr; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(filename, "logger.c"); - - if (*prwlock != ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is already initialized.\n", - filename, lineno, func, rwlock_name); - return 0; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - pthread_rwlockattr_init(&attr); - -#ifdef HAVE_PTHREAD_RWLOCK_PREFER_WRITER_NP - pthread_rwlockattr_setkind_np(&attr, PTHREAD_RWLOCK_PREFER_WRITER_NP); -#endif - - res = pthread_rwlock_init(prwlock, &attr); - pthread_rwlockattr_destroy(&attr); - return res; -} - -#define ast_rwlock_destroy(rwlock) __ast_rwlock_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #rwlock, rwlock) - -static inline int __ast_rwlock_destroy(const char *filename, int lineno, const char *func, const char *rwlock_name, ast_rwlock_t *prwlock) -{ - int res; - int canlog = strcmp(filename, "logger.c"); - -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - if (*prwlock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is uninitialized.\n", - filename, lineno, func, rwlock_name); - return 0; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - if ((res = pthread_rwlock_destroy(prwlock))) - __ast_mutex_logger("%s line %d (%s): Error destroying rwlock %s: %s\n", - filename, lineno, func, rwlock_name, strerror(res)); - - return res; -} - -#define ast_rwlock_unlock(a) \ - _ast_rwlock_unlock(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_unlock(ast_rwlock_t *lock, const char *name, - const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Warning: rwlock '%s' is uninitialized.\n", - file, line, func, name); - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - } - return res; - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - res = pthread_rwlock_unlock(lock); - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_rdlock(a) \ - _ast_rwlock_rdlock(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_rdlock(ast_rwlock_t *lock, const char *name, - const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_RDLOCK, file, line, func, name, lock); - res = pthread_rwlock_rdlock(lock); - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_wrlock(a) \ - _ast_rwlock_wrlock(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_wrlock(ast_rwlock_t *lock, const char *name, - const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_WRLOCK, file, line, func, name, lock); - res = pthread_rwlock_wrlock(lock); - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_timedrdlock(a,b) \ - _ast_rwlock_timedrdlock(a, # a, b, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_timedrdlock(ast_rwlock_t *lock, const char *name, - const struct timespec *abs_timeout, const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_RDLOCK, file, line, func, name, lock); -#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK - res = pthread_rwlock_timedrdlock(lock, abs_timeout); -#else - do { - struct timeval _start = ast_tvnow(), _diff; - for (;;) { - if (!(res = pthread_rwlock_tryrdlock(lock))) { - break; - } - _diff = ast_tvsub(ast_tvnow(), _start); - if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) { - break; - } - usleep(1); - } - } while (0); -#endif - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_timedwrlock(a,b) \ - _ast_rwlock_timedwrlock(a, # a, b, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_timedwrlock(ast_rwlock_t *lock, const char *name, - const struct timespec *abs_timeout, const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_WRLOCK, file, line, func, name, lock); -#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK - res = pthread_rwlock_timedwrlock(lock, abs_timeout); -#else - do { - struct timeval _start = ast_tvnow(), _diff; - for (;;) { - if (!(res = pthread_rwlock_trywrlock(lock))) { - break; - } - _diff = ast_tvsub(ast_tvnow(), _start); - if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) { - break; - } - usleep(1); - } - } while (0); -#endif - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_tryrdlock(a) \ - _ast_rwlock_tryrdlock(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_tryrdlock(ast_rwlock_t *lock, const char *name, - const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_RDLOCK, file, line, func, name, lock); - res = pthread_rwlock_tryrdlock(lock); - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#define ast_rwlock_trywrlock(a) \ - _ast_rwlock_trywrlock(a, # a, __FILE__, __LINE__, __PRETTY_FUNCTION__) - -static inline int _ast_rwlock_trywrlock(ast_rwlock_t *lock, const char *name, - const char *file, int line, const char *func) -{ - int res; -#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS - int canlog = strcmp(file, "logger.c"); - - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - /* Don't warn abount uninitialized lock. - * Simple try to initialize it. - * May be not needed in linux system. - */ - res = __ast_rwlock_init(file, line, func, name, lock); - if (*lock == ((ast_rwlock_t) AST_RWLOCK_INIT_VALUE)) { - __ast_mutex_logger("%s line %d (%s): Error: rwlock '%s' is uninitialized and unable to initialize.\n", - file, line, func, name); - return res; - } - } -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - - ast_store_lock_info(AST_WRLOCK, file, line, func, name, lock); - res = pthread_rwlock_trywrlock(lock); - if (!res) - ast_mark_lock_acquired(lock); - else - ast_remove_lock_info(lock); - return res; -} - -#else /* !DEBUG_THREADS */ - -static inline int ast_rwlock_init(ast_rwlock_t *prwlock) -{ - int res; - pthread_rwlockattr_t attr; - - pthread_rwlockattr_init(&attr); - -#ifdef HAVE_PTHREAD_RWLOCK_PREFER_WRITER_NP - pthread_rwlockattr_setkind_np(&attr, PTHREAD_RWLOCK_PREFER_WRITER_NP); -#endif - - res = pthread_rwlock_init(prwlock, &attr); - pthread_rwlockattr_destroy(&attr); - return res; -} - -static inline int ast_rwlock_destroy(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_destroy(prwlock); -} - -static inline int ast_rwlock_unlock(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_unlock(prwlock); -} - -static inline int ast_rwlock_rdlock(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_rdlock(prwlock); -} - -static inline int ast_rwlock_timedrdlock(ast_rwlock_t *prwlock, const struct timespec *abs_timeout) -{ - int res; -#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK - res = pthread_rwlock_timedrdlock(prwlock, abs_timeout); -#else - struct timeval _start = ast_tvnow(), _diff; - for (;;) { - if (!(res = pthread_rwlock_tryrdlock(prwlock))) { - break; - } - _diff = ast_tvsub(ast_tvnow(), _start); - if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) { - break; - } - usleep(1); - } -#endif - return res; -} - -static inline int ast_rwlock_tryrdlock(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_tryrdlock(prwlock); -} - -static inline int ast_rwlock_wrlock(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_wrlock(prwlock); -} - -static inline int ast_rwlock_timedwrlock(ast_rwlock_t *prwlock, const struct timespec *abs_timeout) -{ - int res; -#ifdef HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK - res = pthread_rwlock_timedwrlock(prwlock, abs_timeout); -#else - do { - struct timeval _start = ast_tvnow(), _diff; - for (;;) { - if (!(res = pthread_rwlock_trywrlock(prwlock))) { - break; - } - _diff = ast_tvsub(ast_tvnow(), _start); - if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) { - break; - } - usleep(1); - } - } while (0); -#endif - return res; -} - -static inline int ast_rwlock_trywrlock(ast_rwlock_t *prwlock) -{ - return pthread_rwlock_trywrlock(prwlock); -} -#endif /* !DEBUG_THREADS */ - -/* Statically declared read/write locks */ - -#ifndef HAVE_PTHREAD_RWLOCK_INITIALIZER -#define __AST_RWLOCK_DEFINE(scope, rwlock) \ - scope ast_rwlock_t rwlock; \ -static void __attribute__((constructor)) init_##rwlock(void) \ -{ \ - ast_rwlock_init(&rwlock); \ -} \ -static void __attribute__((destructor)) fini_##rwlock(void) \ -{ \ - ast_rwlock_destroy(&rwlock); \ -} -#else -#define __AST_RWLOCK_DEFINE(scope, rwlock) \ - scope ast_rwlock_t rwlock = AST_RWLOCK_INIT_VALUE -#endif - -#define AST_RWLOCK_DEFINE_STATIC(rwlock) __AST_RWLOCK_DEFINE(static, rwlock) - /* * Initial support for atomic instructions. * For platforms that have it, use the native cpu instruction to @@ -1365,35 +463,21 @@ AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p), }) #endif -#ifndef DEBUG_CHANNEL_LOCKS -/*! \brief Lock a channel. If DEBUG_CHANNEL_LOCKS is defined - in the Makefile, print relevant output for debugging */ -#define ast_channel_lock(x) ast_mutex_lock(&x->lock) -/*! \brief Unlock a channel. If DEBUG_CHANNEL_LOCKS is defined - in the Makefile, print relevant output for debugging */ -#define ast_channel_unlock(x) ast_mutex_unlock(&x->lock) -/*! \brief Try locking a channel. If DEBUG_CHANNEL_LOCKS is defined - in the Makefile, print relevant output for debugging */ -#define ast_channel_trylock(x) ast_mutex_trylock(&x->lock) -#else - struct ast_channel; -#define ast_channel_lock(a) __ast_channel_lock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) /*! \brief Lock AST channel (and print debugging output) -\note You need to enable DEBUG_CHANNEL_LOCKS for this function */ +\note You need to enable DEBUG_CHANNEL_LOCKS for debugging output */ int __ast_channel_lock(struct ast_channel *chan, const char *file, int lineno, const char *func); +#define ast_channel_lock(a) __ast_channel_lock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) -#define ast_channel_unlock(a) __ast_channel_unlock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) /*! \brief Unlock AST channel (and print debugging output) -\note You need to enable DEBUG_CHANNEL_LOCKS for this function -*/ +\note You need to enable DEBUG_CHANNEL_LOCKS for debugging output */ int __ast_channel_unlock(struct ast_channel *chan, const char *file, int lineno, const char *func); +#define ast_channel_unlock(a) __ast_channel_unlock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) -#define ast_channel_trylock(a) __ast_channel_trylock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) /*! \brief Lock AST channel (and print debugging output) -\note You need to enable DEBUG_CHANNEL_LOCKS for this function */ +\note You need to enable DEBUG_CHANNEL_LOCKS for debugging output */ int __ast_channel_trylock(struct ast_channel *chan, const char *file, int lineno, const char *func); -#endif +#define ast_channel_trylock(a) __ast_channel_trylock(a, __FILE__, __LINE__, __PRETTY_FUNCTION__) #endif /* _ASTERISK_LOCK_H */ |