| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with FFmpeg; if not, write to the Free Software Foundation, Inc., |
| * 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> |
| |
| #define KPERF_LIST \ |
| F(int, kpc_get_counting, void) \ |
| F(int, kpc_force_all_ctrs_set, int) \ |
| F(int, kpc_set_counting, uint32_t) \ |
| F(int, kpc_set_thread_counting, uint32_t) \ |
| F(int, kpc_set_config, uint32_t, void *) \ |
| F(int, kpc_get_config, uint32_t, void *) \ |
| F(int, kpc_set_period, uint32_t, void *) \ |
| F(int, kpc_get_period, uint32_t, void *) \ |
| F(uint32_t, kpc_get_counter_count, uint32_t) \ |
| F(uint32_t, kpc_get_config_count, uint32_t) \ |
| F(int, kperf_sample_get, int *) \ |
| F(int, kpc_get_thread_counters, int, unsigned int, void *) |
| |
| #define F(ret, name, ...) \ |
| typedef ret name##proc(__VA_ARGS__); \ |
| static name##proc *name = NULL; |
| KPERF_LIST |
| #undef F |
| |
| #define CFGWORD_EL0A32EN_MASK (0x10000) |
| #define CFGWORD_EL0A64EN_MASK (0x20000) |
| #define CFGWORD_EL1EN_MASK (0x40000) |
| #define CFGWORD_EL3EN_MASK (0x80000) |
| #define CFGWORD_ALLMODES_MASK (0xf0000) |
| |
| #define CPMU_NONE 0 |
| #define CPMU_CORE_CYCLE 0x02 |
| #define CPMU_INST_A64 0x8c |
| #define CPMU_INST_BRANCH 0x8d |
| #define CPMU_SYNC_DC_LOAD_MISS 0xbf |
| #define CPMU_SYNC_DC_STORE_MISS 0xc0 |
| #define CPMU_SYNC_DTLB_MISS 0xc1 |
| #define CPMU_SYNC_ST_HIT_YNGR_LD 0xc4 |
| #define CPMU_SYNC_BR_ANY_MISP 0xcb |
| #define CPMU_FED_IC_MISS_DEM 0xd3 |
| #define CPMU_FED_ITLB_MISS 0xd4 |
| |
| #define KPC_CLASS_FIXED_MASK (1 << 0) |
| #define KPC_CLASS_CONFIGURABLE_MASK (1 << 1) |
| #define KPC_CLASS_POWER_MASK (1 << 2) |
| #define KPC_CLASS_RAWPMU_MASK (1 << 3) |
| |
| #define COUNTERS_COUNT 10 |
| #define CONFIG_COUNT 8 |
| #define KPC_MASK (KPC_CLASS_CONFIGURABLE_MASK | KPC_CLASS_FIXED_MASK) |
| |
| static void kperf_init(void) |
| { |
| uint64_t config[COUNTERS_COUNT] = {0}; |
| void *kperf = NULL; |
| |
| av_assert0(kperf = dlopen("/System/Library/PrivateFrameworks/kperf.framework/Versions/A/kperf", RTLD_LAZY)); |
| |
| #define F(ret, name, ...) av_assert0(name = (name##proc *)(dlsym(kperf, #name))); |
| KPERF_LIST |
| #undef F |
| |
| 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; |
| |
| 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); |
| } |
| |
| 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() |
| { |
| uint64_t counters[COUNTERS_COUNT]; |
| if (kpc_get_thread_counters(0, COUNTERS_COUNT, counters)) { |
| return -1; |
| } |
| |
| return counters[0]; |
| } |