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Diffstat (limited to 'include/asterisk/lock.h')
| -rw-r--r-- | include/asterisk/lock.h | 1253 |
1 files changed, 0 insertions, 1253 deletions
diff --git a/include/asterisk/lock.h b/include/asterisk/lock.h deleted file mode 100644 index bcf802451..000000000 --- a/include/asterisk/lock.h +++ /dev/null @@ -1,1253 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2006, Digium, Inc. - * - * Mark Spencer <markster@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * \brief General Asterisk channel locking definitions. - * - * - See \ref LockDef - */ - -/*! \page LockDef Asterisk thread locking models - * - * This file provides different implementation of the functions, - * depending on the platform, the use of DEBUG_THREADS, and the way - * module-level mutexes are initialized. - * - * - \b static: the mutex is assigned the value AST_MUTEX_INIT_VALUE - * this is done at compile time, and is the way used on Linux. - * This method is not applicable to all platforms e.g. when the - * initialization needs that some code is run. - * - * - \b through constructors: for each mutex, a constructor function is - * defined, which then runs when the program (or the module) - * starts. The problem with this approach is that there is a - * lot of code duplication (a new block of code is created for - * each mutex). Also, it does not prevent a user from declaring - * a global mutex without going through the wrapper macros, - * so sane programming practices are still required. - */ - -#ifndef _ASTERISK_LOCK_H -#define _ASTERISK_LOCK_H - -#include <pthread.h> -#include <netdb.h> -#include <time.h> -#include <sys/param.h> - -#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 - -#if defined(SOLARIS) || defined(BSD) -#define AST_MUTEX_INIT_W_CONSTRUCTORS -#endif /* SOLARIS || BSD */ - -/* Asterisk REQUIRES recursive (not error checking) mutexes - and will not run without them. */ -#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) -#define PTHREAD_MUTEX_INIT_VALUE PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP -#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE_NP -#else -#define PTHREAD_MUTEX_INIT_VALUE PTHREAD_MUTEX_INITIALIZER -#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> -#include <unistd.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 - -struct ast_mutex_info { - pthread_mutex_t mutex; - /*! Track which thread holds this lock */ - unsigned int track:1; - const char *file[AST_MAX_REENTRANCY]; - int lineno[AST_MAX_REENTRANCY]; - int reentrancy; - const char *func[AST_MAX_REENTRANCY]; - pthread_t thread[AST_MAX_REENTRANCY]; - pthread_mutex_t reentr_mutex; -}; - -typedef struct ast_mutex_info ast_mutex_t; - -typedef pthread_cond_t ast_cond_t; - -static pthread_mutex_t empty_mutex; - -enum ast_lock_type { - AST_MUTEX, - AST_RDLOCK, - AST_WRLOCK, -}; - -/*! - * \brief Store lock info for the current thread - * - * This function gets called in ast_mutex_lock() and ast_mutex_trylock() so - * that information about this lock can be stored in this thread's - * lock info struct. The lock is marked as pending as the thread is waiting - * on the lock. ast_mark_lock_acquired() will mark it as held by this thread. - */ -#if !defined(LOW_MEMORY) -void ast_store_lock_info(enum ast_lock_type type, const char *filename, - int line_num, const char *func, const char *lock_name, void *lock_addr); -#else -#define ast_store_lock_info(I,DONT,CARE,ABOUT,THE,PARAMETERS) -#endif - - -/*! - * \brief Mark the last lock as acquired - */ -#if !defined(LOW_MEMORY) -void ast_mark_lock_acquired(void *lock_addr); -#else -#define ast_mark_lock_acquired(ignore) -#endif - -/*! - * \brief Mark the last lock as failed (trylock) - */ -#if !defined(LOW_MEMORY) -void ast_mark_lock_failed(void *lock_addr); -#else -#define ast_mark_lock_failed(ignore) -#endif - -/*! - * \brief remove lock info for the current thread - * - * this gets called by ast_mutex_unlock so that information on the lock can - * be removed from the current thread's lock info struct. - */ -#if !defined(LOW_MEMORY) -void ast_remove_lock_info(void *lock_addr); -#else -#define ast_remove_lock_info(ignore) -#endif - -/*! - * \brief retrieve lock info for the specified mutex - * - * this gets called during deadlock avoidance, so that the information may - * be preserved as to what location originally acquired the lock. - */ -#if !defined(LOW_MEMORY) -int ast_find_lock_info(void *lock_addr, char *filename, size_t filename_size, int *lineno, char *func, size_t func_size, char *mutex_name, size_t mutex_name_size); -#else -#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)); -} - -static inline void ast_reentrancy_lock(ast_mutex_t *p_ast_mutex) -{ - pthread_mutex_lock(&p_ast_mutex->reentr_mutex); -} - -static inline void ast_reentrancy_unlock(ast_mutex_t *p_ast_mutex) -{ - pthread_mutex_unlock(&p_ast_mutex->reentr_mutex); -} - -static inline void ast_reentrancy_init(ast_mutex_t *p_ast_mutex) -{ - int i; - pthread_mutexattr_t reentr_attr; - - for (i = 0; i < AST_MAX_REENTRANCY; i++) { - p_ast_mutex->file[i] = NULL; - p_ast_mutex->lineno[i] = 0; - p_ast_mutex->func[i] = NULL; - p_ast_mutex->thread[i] = 0; - } - - p_ast_mutex->reentrancy = 0; - - pthread_mutexattr_init(&reentr_attr); - pthread_mutexattr_settype(&reentr_attr, AST_MUTEX_KIND); - pthread_mutex_init(&p_ast_mutex->reentr_mutex, &reentr_attr); - pthread_mutexattr_destroy(&reentr_attr); -} - -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) - -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[t->reentrancy-1], t->lineno[t->reentrancy-1], t->func[t->reentrancy-1], 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[t->reentrancy-1], t->lineno[t->reentrancy-1], - t->func[t->reentrancy-1], 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[t->reentrancy-1] != 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[t->reentrancy-1], t->lineno[t->reentrancy-1], t->func[t->reentrancy-1], 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[t->reentrancy-1] != 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[t->reentrancy-1], t->lineno[t->reentrancy-1], t->func[t->reentrancy-1], 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[t->reentrancy-1] != 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[t->reentrancy-1], t->lineno[t->reentrancy-1], t->func[t->reentrancy-1], 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) \ - ast_mutex_unlock(lock); \ - 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_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); -} - -#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. */ -#define __AST_MUTEX_DEFINE(scope, mutex, init_val, track) \ - scope ast_mutex_t mutex = init_val; \ -static void __attribute__((constructor)) init_##mutex(void) \ -{ \ - if (track) \ - ast_mutex_init(&mutex); \ - else \ - ast_mutex_init_notracking(&mutex); \ -} \ -static void __attribute__((destructor)) fini_##mutex(void) \ -{ \ - ast_mutex_destroy(&mutex); \ -} -#else /* !AST_MUTEX_INIT_W_CONSTRUCTORS */ -/* By default, use static initialization of mutexes. */ -#define __AST_MUTEX_DEFINE(scope, mutex, init_val, track) \ - scope ast_mutex_t mutex = init_val -#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */ - -#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 -#define pthread_mutex_trylock use_ast_mutex_trylock_instead_of_pthread_mutex_trylock -#define pthread_mutex_init use_ast_mutex_init_instead_of_pthread_mutex_init -#define pthread_mutex_destroy use_ast_mutex_destroy_instead_of_pthread_mutex_destroy -#define pthread_cond_t use_ast_cond_t_instead_of_pthread_cond_t -#define pthread_cond_init use_ast_cond_init_instead_of_pthread_cond_init -#define pthread_cond_destroy use_ast_cond_destroy_instead_of_pthread_cond_destroy -#define pthread_cond_signal use_ast_cond_signal_instead_of_pthread_cond_signal -#define pthread_cond_broadcast use_ast_cond_broadcast_instead_of_pthread_cond_broadcast -#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__ - -#ifndef __linux__ -#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_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_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_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 - * implement them. For other platforms, resort to a 'slow' version - * (defined in utils.c) that protects the atomic instruction with - * a single lock. - * The slow versions is always available, for testing purposes, - * as ast_atomic_fetchadd_int_slow() - */ - -int ast_atomic_fetchadd_int_slow(volatile int *p, int v); - -#include "asterisk/inline_api.h" - -#if defined(HAVE_OSX_ATOMICS) -#include "libkern/OSAtomic.h" -#endif - -/*! \brief Atomically add v to *p and return * the previous value of *p. - * This can be used to handle reference counts, and the return value - * can be used to generate unique identifiers. - */ - -#if defined(HAVE_GCC_ATOMICS) -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - return __sync_fetch_and_add(p, v); -}) -#elif defined(HAVE_OSX_ATOMICS) && (SIZEOF_INT == 4) -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - return OSAtomicAdd32(v, (int32_t *) p) - v; -}) -#elif defined(HAVE_OSX_ATOMICS) && (SIZEOF_INT == 8) -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - return OSAtomicAdd64(v, (int64_t *) p) - v; -#elif defined (__i386__) -#ifdef sun -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - __asm __volatile ( - " lock; xaddl %0, %1 ; " - : "+r" (v), /* 0 (result) */ - "=m" (*p) /* 1 */ - : "m" (*p)); /* 2 */ - return (v); -}) -#else /* ifndef sun */ -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - __asm __volatile ( - " lock xaddl %0, %1 ; " - : "+r" (v), /* 0 (result) */ - "=m" (*p) /* 1 */ - : "m" (*p)); /* 2 */ - return (v); -}) -#endif -#else /* low performance version in utils.c */ -AST_INLINE_API(int ast_atomic_fetchadd_int(volatile int *p, int v), -{ - return ast_atomic_fetchadd_int_slow(p, v); -}) -#endif - -/*! \brief decrement *p by 1 and return true if the variable has reached 0. - * Useful e.g. to check if a refcount has reached 0. - */ -#if defined(HAVE_GCC_ATOMICS) -AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p), -{ - return __sync_sub_and_fetch(p, 1) == 0; -}) -#elif defined(HAVE_OSX_ATOMICS) && (SIZEOF_INT == 4) -AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p), -{ - return OSAtomicAdd32( -1, (int32_t *) p) == 0; -}) -#elif defined(HAVE_OSX_ATOMICS) && (SIZEOF_INT == 8) -AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p), -{ - return OSAtomicAdd64( -1, (int64_t *) p) == 0; -#else -AST_INLINE_API(int ast_atomic_dec_and_test(volatile int *p), -{ - int a = ast_atomic_fetchadd_int(p, -1); - return a == 1; /* true if the value is 0 now (so it was 1 previously) */ -}) -#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 */ -int __ast_channel_lock(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__) -/*! \brief Unlock AST channel (and print debugging output) -\note You need to enable DEBUG_CHANNEL_LOCKS for this function -*/ -int __ast_channel_unlock(struct ast_channel *chan, const char *file, int lineno, const char *func); - -#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 */ -int __ast_channel_trylock(struct ast_channel *chan, const char *file, int lineno, const char *func); -#endif - -#endif /* _ASTERISK_LOCK_H */ |