diff options
Diffstat (limited to 'libavutil/macos_kperf.c')
| -rw-r--r-- | libavutil/macos_kperf.c | 65 |
1 files changed, 17 insertions, 48 deletions
diff --git a/libavutil/macos_kperf.c b/libavutil/macos_kperf.c index cb229130f5..9fc04c6349 100644 --- a/libavutil/macos_kperf.c +++ b/libavutil/macos_kperf.c @@ -16,7 +16,10 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ +#include "avassert.h" #include "macos_kperf.h" +#include "thread.h" + #include <stdio.h> #include <stdlib.h> #include <dlfcn.h> @@ -68,69 +71,35 @@ KPERF_LIST #define CONFIG_COUNT 8 #define KPC_MASK (KPC_CLASS_CONFIGURABLE_MASK | KPC_CLASS_FIXED_MASK) -static int ff_kperf_was_init = 0; - -int ff_kperf_init() +static void kperf_init(void) { uint64_t config[COUNTERS_COUNT] = {0}; void *kperf = NULL; - if (ff_kperf_was_init) - return 0; + av_assert0(kperf = dlopen("/System/Library/PrivateFrameworks/kperf.framework/Versions/A/kperf", RTLD_LAZY)); - kperf = dlopen("/System/Library/PrivateFrameworks/kperf.framework/Versions/A/kperf", RTLD_LAZY); - if (!kperf) { - fprintf(stderr, "kperf: kperf = %p\n", kperf); - return -1; - } - -#define F(ret, name, ...) \ - name = (name##proc *)(dlsym(kperf, #name)); \ - if (!name) { \ - fprintf(stderr, "kperf: %s = %p\n", #name, (void *)name); \ - return -1; \ - } +#define F(ret, name, ...) av_assert0(name = (name##proc *)(dlsym(kperf, #name))); KPERF_LIST #undef F - if (kpc_get_counter_count(KPC_MASK) != COUNTERS_COUNT) { - fprintf(stderr, "kperf: wrong fixed counters count\n"); - return -1; - } - - if (kpc_get_config_count(KPC_MASK) != CONFIG_COUNT) { - fprintf(stderr, "kperf: wrong fixed config count\n"); - return -1; - } + av_assert0(kpc_get_counter_count(KPC_MASK) == COUNTERS_COUNT); + av_assert0(kpc_get_config_count(KPC_MASK) == CONFIG_COUNT); config[0] = CPMU_CORE_CYCLE | CFGWORD_EL0A64EN_MASK; // config[3] = CPMU_INST_BRANCH | CFGWORD_EL0A64EN_MASK; // config[4] = CPMU_SYNC_BR_ANY_MISP | CFGWORD_EL0A64EN_MASK; // config[5] = CPMU_INST_A64 | CFGWORD_EL0A64EN_MASK; - if (kpc_set_config(KPC_MASK, config)) { - fprintf(stderr, "kperf: kpc_set_config failed\n"); - return -1; - } - - if (kpc_force_all_ctrs_set(1)) { - fprintf(stderr, "kperf: kpc_force_all_ctrs_set failed\n"); - return -1; - } - - if (kpc_set_counting(KPC_MASK)) { - fprintf(stderr, "kperf: kpc_set_counting failed\n"); - return -1; - } - - if (kpc_set_thread_counting(KPC_MASK)) { - fprintf(stderr, "kperf: kpc_set_thread_counting failed\n"); - return -1; - } - - ff_kperf_was_init = 1; + av_assert0(kpc_set_config(KPC_MASK, config) == 0 || !"the kperf API needs to be run as root"); + av_assert0(kpc_force_all_ctrs_set(1) == 0); + av_assert0(kpc_set_counting(KPC_MASK) == 0); + av_assert0(kpc_set_thread_counting(KPC_MASK) == 0); +} - return 0; +void ff_kperf_init(void) +{ + static AVOnce init_static_once = AV_ONCE_INIT; + ff_thread_once(&init_static_once, kperf_init); } uint64_t ff_kperf_cycles() |