| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include "config.h" | ||
| 20 | |||
| 21 | #if HAVE_SCHED_GETAFFINITY | ||
| 22 | #ifndef _GNU_SOURCE | ||
| 23 | # define _GNU_SOURCE | ||
| 24 | #endif | ||
| 25 | #include <sched.h> | ||
| 26 | #endif | ||
| 27 | |||
| 28 | #include <stddef.h> | ||
| 29 | #include <stdint.h> | ||
| 30 | #include <stdatomic.h> | ||
| 31 | |||
| 32 | #include "attributes.h" | ||
| 33 | #include "cpu.h" | ||
| 34 | #include "cpu_internal.h" | ||
| 35 | #include "opt.h" | ||
| 36 | #include "common.h" | ||
| 37 | |||
| 38 | #if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT | ||
| 39 | #include <windows.h> | ||
| 40 | #endif | ||
| 41 | #if HAVE_SYSCTL | ||
| 42 | #if HAVE_SYS_PARAM_H | ||
| 43 | #include <sys/param.h> | ||
| 44 | #endif | ||
| 45 | #include <sys/types.h> | ||
| 46 | #include <sys/sysctl.h> | ||
| 47 | #endif | ||
| 48 | #if HAVE_UNISTD_H | ||
| 49 | #include <unistd.h> | ||
| 50 | #endif | ||
| 51 | |||
| 52 | #if HAVE_GETAUXVAL || HAVE_ELF_AUX_INFO | ||
| 53 | #include <sys/auxv.h> | ||
| 54 | #endif | ||
| 55 | |||
| 56 | static atomic_int cpu_flags = -1; | ||
| 57 | static atomic_int cpu_count = -1; | ||
| 58 | |||
| 59 | 10564 | static int get_cpu_flags(void) | |
| 60 | { | ||
| 61 | #if ARCH_MIPS | ||
| 62 | return ff_get_cpu_flags_mips(); | ||
| 63 | #elif ARCH_AARCH64 | ||
| 64 | return ff_get_cpu_flags_aarch64(); | ||
| 65 | #elif ARCH_ARM | ||
| 66 | return ff_get_cpu_flags_arm(); | ||
| 67 | #elif ARCH_PPC | ||
| 68 | return ff_get_cpu_flags_ppc(); | ||
| 69 | #elif ARCH_RISCV | ||
| 70 | return ff_get_cpu_flags_riscv(); | ||
| 71 | #elif ARCH_WASM | ||
| 72 | return ff_get_cpu_flags_wasm(); | ||
| 73 | #elif ARCH_X86 | ||
| 74 | 10564 | return ff_get_cpu_flags_x86(); | |
| 75 | #elif ARCH_LOONGARCH | ||
| 76 | return ff_get_cpu_flags_loongarch(); | ||
| 77 | #endif | ||
| 78 | return 0; | ||
| 79 | } | ||
| 80 | |||
| 81 | 11954 | void av_force_cpu_flags(int arg){ | |
| 82 | 11954 | if (ARCH_X86 && | |
| 83 |
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11954 | (arg & ( AV_CPU_FLAG_3DNOW | |
| 84 | AV_CPU_FLAG_3DNOWEXT | | ||
| 85 | AV_CPU_FLAG_MMXEXT | | ||
| 86 | AV_CPU_FLAG_SSE | | ||
| 87 | AV_CPU_FLAG_SSE2 | | ||
| 88 | AV_CPU_FLAG_SSE2SLOW | | ||
| 89 | AV_CPU_FLAG_SSE3 | | ||
| 90 | AV_CPU_FLAG_SSE3SLOW | | ||
| 91 | AV_CPU_FLAG_SSSE3 | | ||
| 92 | AV_CPU_FLAG_SSE4 | | ||
| 93 | AV_CPU_FLAG_SSE42 | | ||
| 94 | AV_CPU_FLAG_AVX | | ||
| 95 | AV_CPU_FLAG_AVXSLOW | | ||
| 96 | AV_CPU_FLAG_XOP | | ||
| 97 | AV_CPU_FLAG_FMA3 | | ||
| 98 | AV_CPU_FLAG_FMA4 | | ||
| 99 | AV_CPU_FLAG_AVX2 | | ||
| 100 | AV_CPU_FLAG_AVX512 )) | ||
| 101 |
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3265 | && !(arg & AV_CPU_FLAG_MMX)) { |
| 102 | ✗ | av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n"); | |
| 103 | ✗ | arg |= AV_CPU_FLAG_MMX; | |
| 104 | } | ||
| 105 | |||
| 106 | 11954 | atomic_store_explicit(&cpu_flags, arg, memory_order_relaxed); | |
| 107 | 11954 | } | |
| 108 | |||
| 109 | 1853862 | int av_get_cpu_flags(void) | |
| 110 | { | ||
| 111 | 1853862 | int flags = atomic_load_explicit(&cpu_flags, memory_order_relaxed); | |
| 112 |
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1853862 | if (flags == -1) { |
| 113 | 10564 | flags = get_cpu_flags(); | |
| 114 | 10564 | atomic_store_explicit(&cpu_flags, flags, memory_order_relaxed); | |
| 115 | } | ||
| 116 | 1853862 | return flags; | |
| 117 | } | ||
| 118 | |||
| 119 | 8525 | int av_parse_cpu_caps(unsigned *flags, const char *s) | |
| 120 | { | ||
| 121 | static const AVOption cpuflags_opts[] = { | ||
| 122 | { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" }, | ||
| 123 | #if ARCH_PPC | ||
| 124 | { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" }, | ||
| 125 | { "vsx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VSX }, .unit = "flags" }, | ||
| 126 | { "power8" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_POWER8 }, .unit = "flags" }, | ||
| 127 | #elif ARCH_X86 | ||
| 128 | { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" }, | ||
| 129 | { "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" }, | ||
| 130 | { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" }, | ||
| 131 | { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" }, | ||
| 132 | { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" }, | ||
| 133 | { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" }, | ||
| 134 | { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" }, | ||
| 135 | { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" }, | ||
| 136 | { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" }, | ||
| 137 | { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" }, | ||
| 138 | { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" }, | ||
| 139 | { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" }, | ||
| 140 | { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" }, | ||
| 141 | { "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVXSLOW }, .unit = "flags" }, | ||
| 142 | { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" }, | ||
| 143 | { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3 }, .unit = "flags" }, | ||
| 144 | { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" }, | ||
| 145 | { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2 }, .unit = "flags" }, | ||
| 146 | { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" }, | ||
| 147 | { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2 }, .unit = "flags" }, | ||
| 148 | { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" }, | ||
| 149 | { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" }, | ||
| 150 | { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" }, | ||
| 151 | { "aesni", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AESNI }, .unit = "flags" }, | ||
| 152 | { "clmul", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CLMUL }, .unit = "flags" }, | ||
| 153 | { "avx512" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX512 }, .unit = "flags" }, | ||
| 154 | { "avx512icl", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX512ICL }, .unit = "flags" }, | ||
| 155 | { "slowgather", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SLOW_GATHER }, .unit = "flags" }, | ||
| 156 | |||
| 157 | #define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX | ||
| 158 | #define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE | ||
| 159 | #define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2 | ||
| 160 | { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" }, | ||
| 161 | { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" }, | ||
| 162 | { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" }, | ||
| 163 | |||
| 164 | #define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW | ||
| 165 | #define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2 | ||
| 166 | #define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE | ||
| 167 | #define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2 | ||
| 168 | { "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" }, | ||
| 169 | { "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" }, | ||
| 170 | { "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" }, | ||
| 171 | { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" }, | ||
| 172 | { "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" }, | ||
| 173 | #elif ARCH_ARM | ||
| 174 | { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" }, | ||
| 175 | { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" }, | ||
| 176 | { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" }, | ||
| 177 | { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" }, | ||
| 178 | { "vfp_vm", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM }, .unit = "flags" }, | ||
| 179 | { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" }, | ||
| 180 | { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" }, | ||
| 181 | { "setend", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND }, .unit = "flags" }, | ||
| 182 | #elif ARCH_AARCH64 | ||
| 183 | { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" }, | ||
| 184 | { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" }, | ||
| 185 | { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" }, | ||
| 186 | { "dotprod", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_DOTPROD }, .unit = "flags" }, | ||
| 187 | { "i8mm", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_I8MM }, .unit = "flags" }, | ||
| 188 | { "sve", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SVE }, .unit = "flags" }, | ||
| 189 | { "sve2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SVE2 }, .unit = "flags" }, | ||
| 190 | { "sme", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SME }, .unit = "flags" }, | ||
| 191 | { "crc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARM_CRC }, .unit = "flags" }, | ||
| 192 | { "sme_i16i64", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SME_I16I64 }, .unit = "flags" }, | ||
| 193 | { "sme2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SME2 }, .unit = "flags" }, | ||
| 194 | { "pmull", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_PMULL }, .unit = "flags" }, | ||
| 195 | { "eor3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_EOR3 }, .unit = "flags" }, | ||
| 196 | #elif ARCH_MIPS | ||
| 197 | { "mmi", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMI }, .unit = "flags" }, | ||
| 198 | { "msa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MSA }, .unit = "flags" }, | ||
| 199 | #elif ARCH_LOONGARCH | ||
| 200 | { "lsx", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_LSX }, .unit = "flags" }, | ||
| 201 | { "lasx", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_LASX }, .unit = "flags" }, | ||
| 202 | #elif ARCH_RISCV | ||
| 203 | { "rvi", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVI }, .unit = "flags" }, | ||
| 204 | { "rvb", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVB }, .unit = "flags" }, | ||
| 205 | { "zve32x", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVV_I32 }, .unit = "flags" }, | ||
| 206 | { "zve32f", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVV_F32 }, .unit = "flags" }, | ||
| 207 | { "zve64x", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVV_I64 }, .unit = "flags" }, | ||
| 208 | { "zve64d", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVV_F64 }, .unit = "flags" }, | ||
| 209 | { "zbb", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RVB_BASIC }, .unit = "flags" }, | ||
| 210 | { "zvbb", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RV_ZVBB }, .unit = "flags" }, | ||
| 211 | { "misaligned", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_RV_MISALIGNED }, .unit = "flags" }, | ||
| 212 | #elif ARCH_WASM | ||
| 213 | { "simd128", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SIMD128 }, .unit = "flags" }, | ||
| 214 | #endif | ||
| 215 | { NULL }, | ||
| 216 | }; | ||
| 217 | static const AVClass class = { | ||
| 218 | .class_name = "cpuflags", | ||
| 219 | .item_name = av_default_item_name, | ||
| 220 | .option = cpuflags_opts, | ||
| 221 | .version = LIBAVUTIL_VERSION_INT, | ||
| 222 | }; | ||
| 223 | 8525 | const AVClass *pclass = &class; | |
| 224 | |||
| 225 | 8525 | return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags); | |
| 226 | } | ||
| 227 | |||
| 228 | 5609 | int av_cpu_count(void) | |
| 229 | { | ||
| 230 | static atomic_int printed = 0; | ||
| 231 | |||
| 232 | 5609 | int nb_cpus = 1; | |
| 233 | 5609 | int count = 0; | |
| 234 | #if HAVE_WINRT | ||
| 235 | SYSTEM_INFO sysinfo; | ||
| 236 | #endif | ||
| 237 | #if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT) | ||
| 238 | cpu_set_t cpuset; | ||
| 239 | |||
| 240 | 5609 | CPU_ZERO(&cpuset); | |
| 241 | |||
| 242 |
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5609 | if (!sched_getaffinity(0, sizeof(cpuset), &cpuset)) |
| 243 | 5609 | nb_cpus = CPU_COUNT(&cpuset); | |
| 244 | #elif HAVE_GETPROCESSAFFINITYMASK | ||
| 245 | DWORD_PTR proc_aff, sys_aff; | ||
| 246 | if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff)) | ||
| 247 | nb_cpus = av_popcount64(proc_aff); | ||
| 248 | #elif HAVE_SYSCTL && defined(HW_NCPUONLINE) | ||
| 249 | int mib[2] = { CTL_HW, HW_NCPUONLINE }; | ||
| 250 | size_t len = sizeof(nb_cpus); | ||
| 251 | |||
| 252 | if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1) | ||
| 253 | nb_cpus = 0; | ||
| 254 | #elif HAVE_SYSCTL && defined(HW_NCPU) | ||
| 255 | int mib[2] = { CTL_HW, HW_NCPU }; | ||
| 256 | size_t len = sizeof(nb_cpus); | ||
| 257 | |||
| 258 | if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1) | ||
| 259 | nb_cpus = 0; | ||
| 260 | #elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN) | ||
| 261 | nb_cpus = sysconf(_SC_NPROC_ONLN); | ||
| 262 | #elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN) | ||
| 263 | nb_cpus = sysconf(_SC_NPROCESSORS_ONLN); | ||
| 264 | #elif HAVE_WINRT | ||
| 265 | GetNativeSystemInfo(&sysinfo); | ||
| 266 | nb_cpus = sysinfo.dwNumberOfProcessors; | ||
| 267 | #endif | ||
| 268 | |||
| 269 |
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5609 | if (!atomic_exchange_explicit(&printed, 1, memory_order_relaxed)) |
| 270 | 3861 | av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus); | |
| 271 | |||
| 272 | 5609 | count = atomic_load_explicit(&cpu_count, memory_order_relaxed); | |
| 273 | |||
| 274 |
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5609 | if (count > 0) { |
| 275 | ✗ | nb_cpus = count; | |
| 276 | ✗ | av_log(NULL, AV_LOG_DEBUG, "overriding to %d logical cores\n", nb_cpus); | |
| 277 | } | ||
| 278 | |||
| 279 | 5609 | return nb_cpus; | |
| 280 | } | ||
| 281 | |||
| 282 | ✗ | void av_cpu_force_count(int count) | |
| 283 | { | ||
| 284 | ✗ | atomic_store_explicit(&cpu_count, count, memory_order_relaxed); | |
| 285 | ✗ | } | |
| 286 | |||
| 287 | 562973 | size_t av_cpu_max_align(void) | |
| 288 | { | ||
| 289 | #if ARCH_MIPS | ||
| 290 | return ff_get_cpu_max_align_mips(); | ||
| 291 | #elif ARCH_AARCH64 | ||
| 292 | return ff_get_cpu_max_align_aarch64(); | ||
| 293 | #elif ARCH_ARM | ||
| 294 | return ff_get_cpu_max_align_arm(); | ||
| 295 | #elif ARCH_PPC | ||
| 296 | return ff_get_cpu_max_align_ppc(); | ||
| 297 | #elif ARCH_WASM | ||
| 298 | return ff_get_cpu_max_align_wasm(); | ||
| 299 | #elif ARCH_X86 | ||
| 300 | 562973 | return ff_get_cpu_max_align_x86(); | |
| 301 | #elif ARCH_LOONGARCH | ||
| 302 | return ff_get_cpu_max_align_loongarch(); | ||
| 303 | #endif | ||
| 304 | |||
| 305 | return 8; | ||
| 306 | } | ||
| 307 | |||
| 308 | #if !ARCH_X86 | ||
| 309 | unsigned long ff_getauxval(unsigned long type) | ||
| 310 | { | ||
| 311 | #if HAVE_GETAUXVAL | ||
| 312 | return getauxval(type); | ||
| 313 | #elif HAVE_ELF_AUX_INFO | ||
| 314 | unsigned long aux = 0; | ||
| 315 | int ret = elf_aux_info(type, &aux, sizeof(aux)); | ||
| 316 | if (ret != 0) { | ||
| 317 | errno = ret; | ||
| 318 | } | ||
| 319 | return aux; | ||
| 320 | #else | ||
| 321 | errno = ENOSYS; | ||
| 322 | return 0; | ||
| 323 | #endif | ||
| 324 | } | ||
| 325 | #endif | ||
| 326 |