/* * 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(void) { uint64_t counters[COUNTERS_COUNT]; if (kpc_get_thread_counters(0, COUNTERS_COUNT, counters)) { return -1; } return counters[0]; }