ref: 6444958f62f272300137d0aaf411f3a4c363f366
dir: /vp8/common/generic/systemdependent.c/
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include "vpx_config.h" #include "vp8_rtcd.h" #if ARCH_ARM #include "vpx_ports/arm.h" #elif ARCH_X86 || ARCH_X86_64 #include "vpx_ports/x86.h" #elif ARCH_PPC #include "vpx_ports/ppc.h" #endif #include "vp8/common/onyxc_int.h" #include "vp8/common/systemdependent.h" #if CONFIG_MULTITHREAD #if HAVE_UNISTD_H && !defined(__OS2__) #include <unistd.h> #elif defined(_WIN32) #include <windows.h> typedef void(WINAPI *PGNSI)(LPSYSTEM_INFO); #elif defined(__OS2__) #define INCL_DOS #define INCL_DOSSPINLOCK #include <os2.h> #endif #endif #if CONFIG_MULTITHREAD static int get_cpu_count() { int core_count = 16; #if HAVE_UNISTD_H && !defined(__OS2__) #if defined(_SC_NPROCESSORS_ONLN) core_count = (int)sysconf(_SC_NPROCESSORS_ONLN); #elif defined(_SC_NPROC_ONLN) core_count = (int)sysconf(_SC_NPROC_ONLN); #endif #elif defined(_WIN32) { #if _WIN32_WINNT >= 0x0501 SYSTEM_INFO sysinfo; GetNativeSystemInfo(&sysinfo); #else PGNSI pGNSI; SYSTEM_INFO sysinfo; /* Call GetNativeSystemInfo if supported or * GetSystemInfo otherwise. */ pGNSI = (PGNSI)GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetNativeSystemInfo"); if (pGNSI != NULL) pGNSI(&sysinfo); else GetSystemInfo(&sysinfo); #endif core_count = (int)sysinfo.dwNumberOfProcessors; } #elif defined(__OS2__) { ULONG proc_id; ULONG status; core_count = 0; for (proc_id = 1;; ++proc_id) { if (DosGetProcessorStatus(proc_id, &status)) break; if (status == PROC_ONLINE) core_count++; } } #else /* other platforms */ #endif return core_count > 0 ? core_count : 1; } #endif void vp8_machine_specific_config(VP8_COMMON *ctx) { #if CONFIG_MULTITHREAD ctx->processor_core_count = get_cpu_count(); #else (void)ctx; #endif /* CONFIG_MULTITHREAD */ #if ARCH_ARM ctx->cpu_caps = arm_cpu_caps(); #elif ARCH_X86 || ARCH_X86_64 ctx->cpu_caps = x86_simd_caps(); #elif ARCH_PPC ctx->cpu_caps = ppc_simd_caps(); #endif }