diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jobs.c | 228 | ||||
| -rw-r--r-- | src/jobs.h | 20 |
2 files changed, 80 insertions, 168 deletions
@@ -44,7 +44,7 @@ #define EVENT_TIMEOUT_CHILD ((uint64_t)10000) /** Internal shortcut for callback */ -typedef void (*job_cb_t)(int, void*, void *, void*); +typedef void (*job_cb_t)(int, void*); /** Description of a pending job */ struct job @@ -52,9 +52,7 @@ struct job struct job *next; /**< link to the next job enqueued */ void *group; /**< group of the request */ job_cb_t callback; /**< processing callback */ - void *arg1; /**< first arg */ - void *arg2; /**< second arg */ - void *arg3; /**< third arg */ + void *arg; /**< argument */ int timeout; /**< timeout in second for processing the request */ unsigned blocked: 1; /**< is an other request blocking this one ? */ unsigned dropped: 1; /**< is removed ? */ @@ -87,10 +85,16 @@ struct thread */ struct sync { - void (*callback)(int, void*); /**< the synchrnous callback */ - void *arg; /**< the argument of the callback */ + struct thread thread; /**< thread loop data */ + union { + void (*callback)(int, void*); /**< the synchronous callback */ + void (*enter)(int signum, void *closure, struct jobloop *jobloop); + /**< the entering synchronous routine */ + }; + void *arg; /**< the argument of the callback */ }; + /* synchronisation of threads */ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; @@ -116,18 +120,14 @@ static struct job *free_jobs; * @param group the group of the job * @param timeout the timeout of the job (0 if none) * @param callback the function that achieves the job - * @param arg1 the first argument of the callback - * @param arg2 the second argument of the callback - * @param arg3 the third argument of the callback + * @param arg the argument of the callback * @return the created job unblock or NULL when no more memory */ static struct job *job_create( void *group, int timeout, job_cb_t callback, - void *arg1, - void *arg2, - void *arg3) + void *arg) { struct job *job; @@ -149,9 +149,7 @@ static struct job *job_create( job->group = group; job->timeout = timeout; job->callback = callback; - job->arg1 = arg1; - job->arg2 = arg2; - job->arg3 = arg3; + job->arg = arg; job->blocked = 0; job->dropped = 0; end: @@ -246,22 +244,6 @@ static inline void job_release(struct job *job) } /** - * Monitored normal callback for a job. - * This function is called by the monitor - * to run the job when the safe environment - * is set. - * @param signum 0 on normal flow or the number - * of the signal that interrupted the normal - * flow - * @param arg the job to run - */ -static void job_call(int signum, void *arg) -{ - struct job *job = arg; - job->callback(signum, job->arg1, job->arg2, job->arg3); -} - -/** * Monitored cancel callback for a job. * This function is called by the monitor * to cancel the job when the safe environment @@ -273,7 +255,8 @@ static void job_call(int signum, void *arg) */ static void job_cancel(int signum, void *arg) { - job_call(SIGABRT, arg); + struct job *job = arg; + job->callback(SIGABRT, job->arg); } /** @@ -338,7 +321,7 @@ static void thread_run(volatile struct thread *me) /* run the job */ pthread_mutex_unlock(&mutex); - sig_monitor(job->timeout, job_call, job); + sig_monitor(job->timeout, job->callback, job->arg); pthread_mutex_lock(&mutex); /* release the run job */ @@ -422,29 +405,7 @@ static int start_one_thread() } /** - * Queues a new asynchronous job represented by 'callback' - * for the 'group' and the 'timeout'. - * Jobs are queued FIFO and are possibly executed in parallel - * concurrently except for job of the same group that are - * executed sequentially in FIFO order. - * @param group The group of the job or NULL when no group. - * @param timeout The maximum execution time in seconds of the job - * or 0 for unlimited time. - * @param callback The function to execute for achieving the job. - * Its first parameter is either 0 on normal flow - * or the signal number that broke the normal flow. - * @return 0 in case of success or -1 in case of error - */ -int jobs_queue0( - void *group, - int timeout, - void (*callback)(int signum)) -{ - return jobs_queue3(group, timeout, (job_cb_t)callback, NULL, NULL, NULL); -} - -/** - * Queues a new asynchronous job represented by 'callback' and 'arg1' + * Queues a new asynchronous job represented by 'callback' and 'arg' * for the 'group' and the 'timeout'. * Jobs are queued FIFO and are possibly executed in parallel * concurrently except for job of the same group that are @@ -466,64 +427,6 @@ int jobs_queue( void (*callback)(int, void*), void *arg) { - return jobs_queue3(group, timeout, (job_cb_t)callback, arg, NULL, NULL); -} - -/** - * Queues a new asynchronous job represented by 'callback' and 'arg[12]' - * for the 'group' and the 'timeout'. - * Jobs are queued FIFO and are possibly executed in parallel - * concurrently except for job of the same group that are - * executed sequentially in FIFO order. - * @param group The group of the job or NULL when no group. - * @param timeout The maximum execution time in seconds of the job - * or 0 for unlimited time. - * @param callback The function to execute for achieving the job. - * Its first parameter is either 0 on normal flow - * or the signal number that broke the normal flow. - * The remaining parameters are the parameters 'arg[12]' - * given here. - * @param arg1 The second argument for 'callback' - * @param arg2 The third argument for 'callback' - * @return 0 in case of success or -1 in case of error - */ -int jobs_queue2( - void *group, - int timeout, - void (*callback)(int, void*, void*), - void *arg1, - void *arg2) -{ - return jobs_queue3(group, timeout, (job_cb_t)callback, arg1, arg2, NULL); -} - -/** - * Queues a new asynchronous job represented by 'callback' and 'arg[123]' - * for the 'group' and the 'timeout'. - * Jobs are queued FIFO and are possibly executed in parallel - * concurrently except for job of the same group that are - * executed sequentially in FIFO order. - * @param group The group of the job or NULL when no group. - * @param timeout The maximum execution time in seconds of the job - * or 0 for unlimited time. - * @param callback The function to execute for achieving the job. - * Its first parameter is either 0 on normal flow - * or the signal number that broke the normal flow. - * The remaining parameters are the parameters 'arg[123]' - * given here. - * @param arg1 The second argument for 'callback' - * @param arg2 The third argument for 'callback' - * @param arg3 The forth argument for 'callback' - * @return 0 in case of success or -1 in case of error - */ -int jobs_queue3( - void *group, - int timeout, - void (*callback)(int, void*, void *, void*), - void *arg1, - void *arg2, - void *arg3) -{ const char *info; struct job *job; int rc; @@ -531,7 +434,7 @@ int jobs_queue3( pthread_mutex_lock(&mutex); /* allocates the job */ - job = job_create(group, timeout, callback, arg1, arg2, arg3); + job = job_create(group, timeout, callback, arg); if (!job) { errno = ENOMEM; info = "out of memory"; @@ -574,35 +477,45 @@ error: } /** - * Enter a synchronisation point: activates the job given by 'callback' - * and 'closure' using 'group' and 'timeout' to control sequencing and - * execution time. - * @param group the group for sequencing jobs - * @param timeout the time in seconds allocated to the job - * @param callback the callback that will handle the job. - * it receives 3 parameters: 'signum' that will be 0 - * on normal flow or the catched signal number in case - * of interrupted flow, the context 'closure' as given and - * a 'jobloop' reference that must be used when the job is - * terminated to unlock the current execution flow. - * @param closure the context completion closure for the callback - * @return 0 on success or -1 in case of error + * Internal helper function for 'jobs_enter'. + * @see jobs_enter, jobs_leave */ -int jobs_enter( +static void enter_cb(int signum, void *closure) +{ + struct sync *sync = closure; + sync->enter(signum, sync->arg, (void*)&sync->thread); +} + +/** + * Internal helper function for 'jobs_call'. + * @see jobs_call + */ +static void call_cb(int signum, void *closure) +{ + struct sync *sync = closure; + sync->callback(signum, sync->arg); + jobs_leave((void*)&sync->thread); +} + +/** + * Internal helper for synchronous jobs. It enters + * a new thread loop for evaluating the given job + * as recorded by the couple 'sync_cb' and 'sync'. + * @see jobs_call, jobs_enter, jobs_leave + */ +static int do_sync( void *group, int timeout, - void (*callback)(int signum, void *closure, struct jobloop *jobloop), - void *closure + void (*sync_cb)(int signum, void *closure), + struct sync *sync ) { - struct job *job; - struct thread me; pthread_mutex_lock(&mutex); /* allocates the job */ - job = job_create(group, timeout, (job_cb_t)callback, closure, &me, NULL); + job = job_create(group, timeout, sync_cb, sync); if (!job) { ERROR("out of memory"); errno = ENOMEM; @@ -614,12 +527,41 @@ int jobs_enter( job_add(job); /* run until stopped */ - thread_run(&me); + thread_run(&sync->thread); pthread_mutex_unlock(&mutex); return 0; } /** + * Enter a synchronisation point: activates the job given by 'callback' + * and 'closure' using 'group' and 'timeout' to control sequencing and + * execution time. + * @param group the group for sequencing jobs + * @param timeout the time in seconds allocated to the job + * @param callback the callback that will handle the job. + * it receives 3 parameters: 'signum' that will be 0 + * on normal flow or the catched signal number in case + * of interrupted flow, the context 'closure' as given and + * a 'jobloop' reference that must be used when the job is + * terminated to unlock the current execution flow. + * @param arg the argument to the callback + * @return 0 on success or -1 in case of error + */ +int jobs_enter( + void *group, + int timeout, + void (*callback)(int signum, void *closure, struct jobloop *jobloop), + void *closure +) +{ + struct sync sync; + + sync.enter = callback; + sync.arg = closure; + return do_sync(group, timeout, enter_cb, &sync); +} + +/** * Unlocks the execution flow designed by 'jobloop'. * @param jobloop indication of the flow to unlock * @return 0 in case of success of -1 on error @@ -644,17 +586,6 @@ int jobs_leave(struct jobloop *jobloop) } /** - * Internal helper function for 'jobs_call'. - * @see jobs_call, jobs_enter, jobs_leave - */ -static void call_cb(int signum, void *closure, struct jobloop *jobloop) -{ - struct sync *sync = closure; - sync->callback(signum, sync->arg); - jobs_leave(jobloop); -} - -/** * Calls synchronously the job represented by 'callback' and 'arg1' * for the 'group' and the 'timeout' and waits for its completion. * @param group The group of the job or NULL when no group. @@ -678,7 +609,8 @@ int jobs_call( sync.callback = callback; sync.arg = arg; - return jobs_enter(group, timeout, call_cb, &sync); + + return do_sync(group, timeout, call_cb, &sync); } /** @@ -801,7 +733,7 @@ int jobs_start(int allowed_count, int start_count, int waiter_count, void (*star } /* queue the start job */ - job = job_create(NULL, 0, (job_cb_t)start, NULL, NULL, NULL); + job = job_create(NULL, 0, (job_cb_t)start, NULL); if (!job) { ERROR("out of memory"); errno = ENOMEM; @@ -20,32 +20,12 @@ struct sd_event; struct jobloop; -extern int jobs_queue0( - void *group, - int timeout, - void (*callback)(int signum)); - extern int jobs_queue( void *group, int timeout, void (*callback)(int signum, void* arg), void *arg); -extern int jobs_queue2( - void *group, - int timeout, - void (*callback)(int signum, void* arg1, void *arg2), - void *arg1, - void *arg2); - -extern int jobs_queue3( - void *group, - int timeout, - void (*callback)(int signum, void* arg1, void *arg2, void *arg3), - void *arg1, - void *arg2, - void *arg3); - extern int jobs_enter( void *group, int timeout, |