osfmk/pmc/pmc.c

336 static void perf_monitor_free(void *pm) {
337 	zfree(perf_small_zone, pm);
340 static void perf_monitor_init(perf_monitor_t pm, int cpu) {
341 	assert(pm);
343 	pm->object = NULL;
345 	bzero(&(pm->methods), sizeof(perf_monitor_methods_t));
347 	pm->useCount = 1;	/* initial retain count of 1, for caller */
349 	pm->reservedCounters = 0;
351 	pm->cpu = cpu;
353 	pm->link.next = pm->link.prev = (queue_entry_t)NULL;
354 	pm->cpu_link.next = pm->cpu_link.prev = (queue_entry_t)NULL;
361 static void perf_monitor_dequeue(perf_monitor_t pm) {
364 	if (pm->methods.flags & PERFMON_FLAG_REQUIRES_IDLE_NOTIFICATIONS) {
368 		queue_remove(cpu_monitor_queues[pm->cpu], pm, perf_monitor_t, cpu_link);
372 	 * remove the @pm object from the @perf_monitor_queue queue (it is of type
375 	queue_remove(perf_monitors_queue, pm, perf_monitor_t, link);
386 static void perf_monitor_enqueue(perf_monitor_t pm) {
391 	if (pm->cpu >= 0) {
418 		queue_enter(cpu_monitor_queues[pm->cpu], pm, perf_monitor_t, cpu_link);
421 	queue_enter(perf_monitors_queue, pm, perf_monitor_t, link);
432 static void perf_monitor_reference(perf_monitor_t pm) {
433 	assert(pm);
435 	OSIncrementAtomic(&(pm->useCount));
443 static void perf_monitor_deallocate(perf_monitor_t pm) {
444 	assert(pm);
447 	if(1 == OSDecrementAtomic(&(pm->useCount))) {
449 		perf_monitor_free(pm);
489 static void perf_monitor_add_pmc(perf_monitor_t pm, pmc_t pmc __unused) {
490 	assert(pm);
494 	perf_monitor_reference(pm);
501 static void perf_monitor_remove_pmc(perf_monitor_t pm, pmc_t pmc __unused) {
502 	assert(pm);
506 	perf_monitor_deallocate(pm);
1810 	perf_monitor_t pm = perf_monitor_alloc();
1811 	if(!pm) {
1816 	perf_monitor_init(pm, cpu);
1819 	pm->object = monitor;
1820 	memcpy(&(pm->methods), methods, sizeof(perf_monitor_methods_t));
1823 	perf_monitor_enqueue(pm);
1826 	PRINT_PERF_MON(pm);
1845 	perf_monitor_t pm = perf_monitor_find(monitor);
1846 	if(pm) {
1848 		perf_monitor_dequeue(pm);
1851 		perf_monitor_deallocate(pm);
1854 		perf_monitor_deallocate(pm);
1858 		COUNTER_DEBUG("could not find a registered pm that matches!\n");
1916 	perf_monitor_t pm = perf_monitor_find(monitor);
1917 	if(!pm) {
1926 		perf_monitor_deallocate(pm);
1939 	pmc->monitor = pm;
1947 	perf_monitor_deallocate(pm);