int
main(int argc, char *argv[]) {
unsigned int nworkers;
unsigned int i;
isc_thread_t workers[100];
char name[100];
void *dupname;
if (argc > 1)
nworkers = atoi(argv[1]);
else
nworkers = 2;
if (nworkers > 100)
nworkers = 100;
printf("%d workers\n", nworkers);
RUNTIME_CHECK(isc_rwlock_init(&lock, 5, 10) == ISC_R_SUCCESS);
for (i = 0; i < nworkers; i++) {
sprintf(name, "%02u", i);
dupname = strdup(name);
RUNTIME_CHECK(dupname != NULL);
if (i != 0 && i % 3 == 0)
RUNTIME_CHECK(isc_thread_create(run1, dupname,
&workers[i]) ==
ISC_R_SUCCESS);
else
RUNTIME_CHECK(isc_thread_create(run2, dupname,
&workers[i]) ==
ISC_R_SUCCESS);
}
for (i = 0; i < nworkers; i++)
(void)isc_thread_join(workers[i], NULL);
isc_rwlock_destroy(&lock);
return (0);
}
void
isc_taskmgr_destroy(isc_taskmgr_t **managerp) {
isc_taskmgr_t *manager;
isc_task_t *task;
unsigned int i;
/*
* Destroy '*managerp'.
*/
REQUIRE(managerp != NULL);
manager = *managerp;
REQUIRE(VALID_MANAGER(manager));
#ifndef ISC_PLATFORM_USETHREADS
UNUSED(i);
if (manager->refs > 1) {
manager->refs--;
*managerp = NULL;
return;
}
#endif /* ISC_PLATFORM_USETHREADS */
XTHREADTRACE("isc_taskmgr_destroy");
/*
* Only one non-worker thread may ever call this routine.
* If a worker thread wants to initiate shutdown of the
* task manager, it should ask some non-worker thread to call
* isc_taskmgr_destroy(), e.g. by signalling a condition variable
* that the startup thread is sleeping on.
*/
/*
* Unlike elsewhere, we're going to hold this lock a long time.
* We need to do so, because otherwise the list of tasks could
* change while we were traversing it.
*
* This is also the only function where we will hold both the
* task manager lock and a task lock at the same time.
*/
LOCK(&manager->lock);
/*
* Make sure we only get called once.
*/
INSIST(!manager->exiting);
manager->exiting = ISC_TRUE;
/*
* Post shutdown event(s) to every task (if they haven't already been
* posted).
*/
for (task = HEAD(manager->tasks);
task != NULL;
task = NEXT(task, link)) {
LOCK(&task->lock);
if (task_shutdown(task))
ENQUEUE(manager->ready_tasks, task, ready_link);
UNLOCK(&task->lock);
}
#ifdef ISC_PLATFORM_USETHREADS
/*
* Wake up any sleeping workers. This ensures we get work done if
* there's work left to do, and if there are already no tasks left
* it will cause the workers to see manager->exiting.
*/
BROADCAST(&manager->work_available);
UNLOCK(&manager->lock);
/*
* Wait for all the worker threads to exit.
*/
for (i = 0; i < manager->workers; i++)
(void)isc_thread_join(manager->threads[i], NULL);
#else /* ISC_PLATFORM_USETHREADS */
/*
* Dispatch the shutdown events.
*/
UNLOCK(&manager->lock);
while (isc__taskmgr_ready())
(void)isc__taskmgr_dispatch();
if (!ISC_LIST_EMPTY(manager->tasks))
isc_mem_printallactive(stderr);
INSIST(ISC_LIST_EMPTY(manager->tasks));
#endif /* ISC_PLATFORM_USETHREADS */
manager_free(manager);
*managerp = NULL;
}
ISC_TIMERFUNC_SCOPE void
isc__timermgr_destroy(isc_timermgr_t **managerp) {
isc__timermgr_t *manager;
isc_mem_t *mctx;
/*
* Destroy a timer manager.
*/
REQUIRE(managerp != NULL);
manager = (isc__timermgr_t *)*managerp;
REQUIRE(VALID_MANAGER(manager));
LOCK(&manager->lock);
#ifdef USE_SHARED_MANAGER
manager->refs--;
if (manager->refs > 0) {
UNLOCK(&manager->lock);
*managerp = NULL;
return;
}
timermgr = NULL;
#endif /* USE_SHARED_MANAGER */
#ifndef USE_TIMER_THREAD
isc__timermgr_dispatch((isc_timermgr_t *)manager);
#endif
REQUIRE(EMPTY(manager->timers));
manager->done = ISC_TRUE;
#ifdef USE_TIMER_THREAD
XTRACE(isc_msgcat_get(isc_msgcat, ISC_MSGSET_TIMER,
ISC_MSG_SIGNALDESTROY, "signal (destroy)"));
SIGNAL(&manager->wakeup);
#endif /* USE_TIMER_THREAD */
UNLOCK(&manager->lock);
#ifdef USE_TIMER_THREAD
/*
* Wait for thread to exit.
*/
if (isc_thread_join(manager->thread, NULL) != ISC_R_SUCCESS)
UNEXPECTED_ERROR(__FILE__, __LINE__,
"isc_thread_join() %s",
isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "failed"));
#endif /* USE_TIMER_THREAD */
/*
* Clean up.
*/
#ifdef USE_TIMER_THREAD
(void)isc_condition_destroy(&manager->wakeup);
#endif /* USE_TIMER_THREAD */
DESTROYLOCK(&manager->lock);
isc_heap_destroy(&manager->heap);
manager->common.impmagic = 0;
manager->common.magic = 0;
mctx = manager->mctx;
isc_mem_put(mctx, manager, sizeof(*manager));
isc_mem_detach(&mctx);
*managerp = NULL;
#ifdef USE_SHARED_MANAGER
timermgr = NULL;
#endif
}
ATF_TC_BODY(benchmark, tc) {
isc_result_t result;
char namestr[sizeof("name18446744073709551616.example.org.")];
unsigned int r;
dns_rbt_t *mytree;
dns_rbtnode_t *node;
unsigned int i;
unsigned int maxvalue = 1000000;
isc_time_t ts1, ts2;
double t;
unsigned int nthreads;
isc_thread_t threads[32];
UNUSED(tc);
srandom(time(NULL));
debug_mem_record = ISC_FALSE;
result = dns_test_begin(NULL, ISC_TRUE);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
fnames = (dns_fixedname_t *) malloc(4000000 * sizeof(dns_fixedname_t));
names = (dns_name_t **) malloc(4000000 * sizeof(dns_name_t *));
values = (int *) malloc(4000000 * sizeof(int));
for (i = 0; i < 4000000; i++) {
r = ((unsigned long) random()) % maxvalue;
snprintf(namestr, sizeof(namestr), "name%u.example.org.", r);
build_name_from_str(namestr, &fnames[i]);
names[i] = dns_fixedname_name(&fnames[i]);
values[i] = r;
}
/* Create a tree. */
mytree = NULL;
result = dns_rbt_create(mctx, NULL, NULL, &mytree);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
/* Insert test data into the tree. */
for (i = 0; i < maxvalue; i++) {
snprintf(namestr, sizeof(namestr), "name%u.example.org.", i);
node = NULL;
result = insert_helper(mytree, namestr, &node);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
node->data = (void *) (intptr_t) i;
}
result = isc_time_now(&ts1);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
nthreads = ISC_MIN(isc_os_ncpus(), 32);
nthreads = ISC_MAX(nthreads, 1);
for (i = 0; i < nthreads; i++) {
result = isc_thread_create(find_thread, mytree, &threads[i]);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
}
for (i = 0; i < nthreads; i++) {
result = isc_thread_join(threads[i], NULL);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
}
result = isc_time_now(&ts2);
ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
t = isc_time_microdiff(&ts2, &ts1);
printf("%u findnode calls, %f seconds, %f calls/second\n",
nthreads * 8 * 4000000, t / 1000000.0,
(nthreads * 8 * 4000000) / (t / 1000000.0));
free(values);
free(names);
free(fnames);
dns_rbt_destroy(&mytree);
dns_test_end();
}
void
isc_timermgr_destroy(isc_timermgr_t **managerp) {
isc_timermgr_t *manager;
isc_mem_t *mctx;
/*
* Destroy a timer manager.
*/
REQUIRE(managerp != NULL);
manager = *managerp;
REQUIRE(VALID_MANAGER(manager));
LOCK(&manager->lock);
#ifndef ISC_PLATFORM_USETHREADS
if (manager->refs > 1) {
manager->refs--;
UNLOCK(&manager->lock);
*managerp = NULL;
return;
}
isc__timermgr_dispatch();
#endif /* ISC_PLATFORM_USETHREADS */
REQUIRE(EMPTY(manager->timers));
manager->done = ISC_TRUE;
#ifdef ISC_PLATFORM_USETHREADS
XTRACE(isc_msgcat_get(isc_msgcat, ISC_MSGSET_TIMER,
ISC_MSG_SIGNALDESTROY, "signal (destroy)"));
SIGNAL(&manager->wakeup);
#endif /* ISC_PLATFORM_USETHREADS */
UNLOCK(&manager->lock);
#ifdef ISC_PLATFORM_USETHREADS
/*
* Wait for thread to exit.
*/
if (isc_thread_join(manager->thread, NULL) != ISC_R_SUCCESS)
UNEXPECTED_ERROR(__FILE__, __LINE__,
"isc_thread_join() %s",
isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "failed"));
#endif /* ISC_PLATFORM_USETHREADS */
/*
* Clean up.
*/
#ifdef ISC_PLATFORM_USETHREADS
(void)isc_condition_destroy(&manager->wakeup);
#endif /* ISC_PLATFORM_USETHREADS */
DESTROYLOCK(&manager->lock);
isc_heap_destroy(&manager->heap);
manager->magic = 0;
mctx = manager->mctx;
isc_mem_put(mctx, manager, sizeof(*manager));
isc_mem_detach(&mctx);
*managerp = NULL;
}