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@ -16,6 +16,8 @@
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#include <pthread.h>
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#include <netdb.h>
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#include <time.h>
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#include <sys/param.h>
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#define AST_PTHREADT_NULL (pthread_t) -1
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#define AST_PTHREADT_STOP (pthread_t) -2
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@ -28,13 +30,23 @@
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0x20 } }
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#endif
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#ifdef __FreeBSD__
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#ifdef BSD
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#ifdef __GNUC__
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#define AST_MUTEX_INIT_W_CONSTRUCTORS
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#else
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#define AST_MUTEX_INIT_ON_FIRST_USE
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#endif
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#endif /* __FreeBSD__ */
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#endif /* BSD */
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/* From now on, Asterisk REQUIRES Recursive (not error checking) mutexes
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and will not run without them. */
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#ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define PTHREAD_MUTEX_INIT_VALUE PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE_NP
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#else
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#define PTHREAD_MUTEX_INIT_VALUE PTHREAD_MUTEX_INITIALIZER
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE
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#endif /* PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP */
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#ifdef DEBUG_THREADS
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@ -47,15 +59,7 @@
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#include <stdio.h>
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#include <unistd.h>
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/* From now on, Asterisk REQUIRES Recursive (not error checking) mutexes
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and will not run without them. */
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#ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define AST_MUTEX_INIT_VAULE { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP, NULL, 0, NULL, 0 }
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE_NP
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#else
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#define AST_MUTEX_INIT_VAULE { PTHREAD_MUTEX_INITIALIZER, NULL, 0, NULL, 0 }
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE
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#endif /* PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP */
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#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE, NULL, 0, NULL, 0 }
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struct ast_mutex_info {
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pthread_mutex_t mutex;
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@ -67,28 +71,88 @@ struct ast_mutex_info {
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typedef struct ast_mutex_info ast_mutex_t;
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static inline int ast_pthread_mutex_init(ast_mutex_t *t, pthread_mutexattr_t *attr)
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static inline int __ast_pthread_mutex_init_attr(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t,
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pthread_mutexattr_t *attr)
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{
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t->file = NULL;
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t->lineno = 0;
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t->func = 0;
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#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS
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if((t->mutex) != ((pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER)) {
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fprintf(stderr, "%s line %d (%s): Error: mutex '%s' is already initialized.\n",
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filename, lineno, func, mutex_name);
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fprintf(stderr, "%s line %d (%s): Error: previously initialization of mutex '%s'.\n",
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t->file, t->lineno, t->func, mutex_name);
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#ifdef THREAD_CRASH
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DO_THREAD_CRASH;
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#endif
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return 0;
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}
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#endif
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t->file = filename;
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t->lineno = lineno;
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t->func = func;
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t->thread = 0;
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return pthread_mutex_init(&t->mutex, attr);
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}
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static inline int ast_mutex_init(ast_mutex_t *t)
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static inline int __ast_pthread_mutex_init(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t)
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{
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static pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutexattr_settype(&attr, AST_MUTEX_KIND);
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return ast_pthread_mutex_init(t, &attr);
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return __ast_pthread_mutex_init_attr(filename, lineno, func, mutex_name, t, &attr);
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}
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#define ast_mutex_init(pmutex) __ast_pthread_mutex_init(__FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex)
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#define ast_pthread_mutex_init(pmutex,attr) __ast_pthread_mutex_init_attr(__FILE__, __LINE__, __PRETTY_FUNCTION__, #pmutex, pmutex, attr)
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static inline int __ast_pthread_mutex_destroy(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS
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if((t->mutex) == ((pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER)) {
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fprintf(stderr, "%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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}
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#endif
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res = pthread_mutex_trylock(&t->mutex);
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switch( res ) {
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case 0:
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pthread_mutex_unlock(&t->mutex);
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break;
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case EINVAL:
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fprintf(stderr, "%s line %d (%s): Error: attempt to destroy invalid mutex '%s'.\n",
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filename, lineno, func, mutex_name);
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break;
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case EBUSY:
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fprintf(stderr, "%s line %d (%s): Error: attemp to destroy locked mutex '%s'.\n",
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filename, lineno, func, mutex_name);
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fprintf(stderr, "%s line %d (%s): Error: '%s' was locked here.\n",
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t->file, t->lineno, t->func, mutex_name);
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break;
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}
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res = pthread_mutex_destroy(&t->mutex);
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if (res)
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fprintf(stderr, "%s line %d (%s): Error destroying mutex: %s\n",
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filename, lineno, func, strerror(res));
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#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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else
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t->mutex = PTHREAD_MUTEX_INIT_VALUE;
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#endif
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t->file = filename;
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t->lineno = lineno;
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t->func = func;
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return res;
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}
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#define ast_mutex_destroy(a) __ast_pthread_mutex_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a)
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS)
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/* if AST_MUTEX_INIT_W_CONSTRUCTORS is defined, use file scope
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constrictors/destructors to create/destroy mutexes. */
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constrictors/destructors to create/destroy mutexes. */
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VAULE; \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE; \
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static void __attribute__ ((constructor)) init_##mutex(void) \
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{ \
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ast_mutex_init(&mutex); \
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@ -97,24 +161,54 @@ static void __attribute__ ((destructor)) fini_##mutex(void) \
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{ \
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ast_mutex_destroy(&mutex); \
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}
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#elif defined(AST_MUTEX_INIT_ON_FIRST_USE) || !defined(AST_MUTEX_INIT_W_CONSTRUCTORS)
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#elif defined(AST_MUTEX_INIT_ON_FIRST_USE)
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/* if AST_MUTEX_INIT_ON_FIRST_USE is defined, mutexes are created on
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first use. The performance impact on FreeBSD should be small since
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the pthreads library does this itself to initialize errror checking
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(defaulty type) mutexes. If nither is defined, the pthreads librariy
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does the initialization itself on first use. */
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VAULE
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE
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#else /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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/* By default, use static initialization of mutexes.*/
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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static inline int __ast_pthread_mutex_lock(char *filename, int lineno, char *func, ast_mutex_t *t)
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static inline int __ast_pthread_mutex_lock(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef AST_MUTEX_INIT_ON_FIRST_USE
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if(*t->mutex == (ast_mutex_t)AST_MUTEX_KIND)
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ast_mutex_init(t->mutex);
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) || defined(AST_MUTEX_INIT_ON_FIRST_USE)
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if((t->mutex) == ((pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER)) {
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#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS
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fprintf(stderr, "%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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#endif
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res = pthread_mutex_lock(&t->mutex);
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ast_mutex_init(t);
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}
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#endif /* definded(AST_MUTEX_INIT_W_CONSTRUCTORS) || defined(AST_MUTEX_INIT_ON_FIRST_USE) */
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#ifdef DETECT_DEADLOCKS
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{
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time_t seconds seconds = time(NULL);
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do {
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res = pthread_mutex_trylock(&t->mutex);
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if(res == EBUSY) {
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if((time(NULL) - seconds) % 5) {
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fprintf(stderr, "%s line %d (%s): Deadlock? waited %d sec for mutex '%s'?\n",
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filename, lineno, func, (time(NULL) - seconds), mutex_name);
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fprintf(stderr, "%s line %d (%s): '%s' was locked here.\n",
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t->file, t->lineno, t->func, mutex_name);
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}
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usleep(200);
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}
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} while (res == EBUSY);
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}
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#else
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res = pthread_mutex_lock(&t->mutex);
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#endif /* DETECT_DEADLOCKS */
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if (!res) {
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t->file = filename;
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t->lineno = lineno;
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@ -130,14 +224,21 @@ static inline int __ast_pthread_mutex_lock(char *filename, int lineno, char *fun
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return res;
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}
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#define ast_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
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#define ast_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a)
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static inline int __ast_pthread_mutex_trylock(char *filename, int lineno, char *func, ast_mutex_t *t) {
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static inline int __ast_pthread_mutex_trylock(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t)
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{
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int res;
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#ifdef AST_MUTEX_INIT_ON_FIRST_USE
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if(*t->mutex == (ast_mutex_t)AST_MUTEX_KIND)
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ast_mutex_init(t->mutex);
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#if defined(AST_MUTEX_INIT_W_CONSTRUCTORS) || defined(AST_MUTEX_INIT_ON_FIRST_USE)
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if((t->mutex) == ((pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER)) {
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#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS
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fprintf(stderr, "%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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#endif
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ast_mutex_init(t);
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}
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#endif /* definded(AST_MUTEX_INIT_W_CONSTRUCTORS) || defined(AST_MUTEX_INIT_ON_FIRST_USE) */
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res = pthread_mutex_trylock(&t->mutex);
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if (!res) {
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t->file = filename;
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@ -148,10 +249,17 @@ static inline int __ast_pthread_mutex_trylock(char *filename, int lineno, char *
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return res;
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}
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#define ast_mutex_trylock(a) __ast_pthread_mutex_trylock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
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#define ast_mutex_trylock(a) __ast_pthread_mutex_trylock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a)
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static inline int __ast_pthread_mutex_unlock(char *filename, int lineno, char *func, ast_mutex_t *t) {
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static inline int __ast_pthread_mutex_unlock(char *filename, int lineno, char *func,
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char* mutex_name, ast_mutex_t *t) {
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int res;
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#ifdef AST_MUTEX_INIT_W_CONSTRUCTORS
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if((t->mutex) == ((pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER)) {
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fprintf(stderr, "%s line %d (%s): Error: mutex '%s' is uninitialized.\n",
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filename, lineno, func, mutex_name);
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}
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#endif
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/* Assumes lock is actually held */
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t->file = NULL;
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t->lineno = 0;
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@ -168,23 +276,7 @@ static inline int __ast_pthread_mutex_unlock(char *filename, int lineno, char *f
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return res;
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}
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#define ast_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
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static inline int __ast_pthread_mutex_destroy(char *filename, int lineno, char *func, ast_mutex_t *t)
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{
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int res;
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t->file = NULL;
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t->lineno = 0;
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t->func = NULL;
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t->thread = 0;
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res = pthread_mutex_destroy(&t->mutex);
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if (res)
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fprintf(stderr, "%s line %d (%s): Error destroying mutex: %s\n",
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filename, lineno, func, strerror(res));
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return res;
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}
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#define ast_mutex_destroy(a) __ast_pthread_mutex_destroy(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
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#define ast_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, #a, a)
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#define pthread_mutex_t use_ast_mutex_t_instead_of_pthread_mutex_t
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#define pthread_mutex_lock use_ast_mutex_lock_instead_of_pthread_mutex_lock
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@ -195,15 +287,9 @@ static inline int __ast_pthread_mutex_destroy(char *filename, int lineno, char *
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#else /* DEBUG_THREADS */
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/* From now on, Asterisk REQUIRES Recursive (not error checking) mutexes
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and will not run without them. */
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#ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define AST_MUTEX_INIT_VAULE PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE_NP
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#else
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#define AST_MUTEX_INIT_VAULE PTHREAD_MUTEX_INITIALIZER
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#define AST_MUTEX_KIND PTHREAD_MUTEX_RECURSIVE
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#endif /* PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP */
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#define AST_MUTEX_INIT_VALUE PTHREAD_MUTEX_INIT_VALUE
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typedef pthread_mutex_t ast_mutex_t;
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@ -222,7 +308,7 @@ static inline int ast_mutex_init(ast_mutex_t *pmutex)
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/* if AST_MUTEX_INIT_W_CONSTRUCTORS is defined, use file scope
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constrictors/destructors to create/destroy mutexes. */
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VAULE; \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE; \
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static void __attribute__ ((constructor)) init_##mutex(void) \
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{ \
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ast_mutex_init(&mutex); \
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@ -241,7 +327,7 @@ static void __attribute__ ((destructor)) fini_##mutex(void) \
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the pthreads library does this itself to initialize errror checking
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(defaulty type) mutexes.*/
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VAULE
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE
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static inline int ast_mutex_lock(ast_mutex_t *pmutex)
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{
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@ -258,7 +344,7 @@ static inline int ast_mutex_trylock(ast_mutex_t *pmutex)
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#else
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/* By default, use static initialization of mutexes.*/
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#define __AST_MUTEX_DEFINE(scope,mutex) \
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VAULE
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scope ast_mutex_t mutex = AST_MUTEX_INIT_VALUE
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#define ast_mutex_lock(pmutex) pthread_mutex_lock(pmutex)
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#define ast_mutex_trylock(pmutex) pthread_mutex_trylock(pmutex)
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#endif /* AST_MUTEX_INIT_W_CONSTRUCTORS */
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@ -270,6 +356,7 @@ static inline int ast_mutex_trylock(ast_mutex_t *pmutex)
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#define AST_MUTEX_INITIALIZER __use_AST_MUTEX_DEFINE_STATIC_rather_than_AST_MUTEX_INITIALIZER__
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#define gethostbyname __gethostbyname__is__not__reentrant__use__ast_gethostbyname__instead__
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#endif
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Mark Spencer
21 years ago