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Diffstat (limited to 'intern/cycles/util/util_system.cpp')
-rw-r--r--intern/cycles/util/util_system.cpp415
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diff --git a/intern/cycles/util/util_system.cpp b/intern/cycles/util/util_system.cpp
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--- a/intern/cycles/util/util_system.cpp
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-/*
- * Copyright 2011-2013 Blender Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "util/util_system.h"
-
-#include "util/util_logging.h"
-#include "util/util_string.h"
-#include "util/util_types.h"
-
-#include <numaapi.h>
-
-#include <OpenImageIO/sysutil.h>
-OIIO_NAMESPACE_USING
-
-#ifdef _WIN32
-# if (!defined(FREE_WINDOWS))
-# include <intrin.h>
-# endif
-# include "util_windows.h"
-#elif defined(__APPLE__)
-# include <sys/ioctl.h>
-# include <sys/sysctl.h>
-# include <sys/types.h>
-#else
-# include <sys/ioctl.h>
-# include <unistd.h>
-#endif
-
-CCL_NAMESPACE_BEGIN
-
-bool system_cpu_ensure_initialized()
-{
- static bool is_initialized = false;
- static bool result = false;
- if (is_initialized) {
- return result;
- }
- is_initialized = true;
- const NUMAAPI_Result numa_result = numaAPI_Initialize();
- result = (numa_result == NUMAAPI_SUCCESS);
- return result;
-}
-
-/* Fallback solution, which doesn't use NUMA/CPU groups. */
-static int system_cpu_thread_count_fallback()
-{
-#ifdef _WIN32
- SYSTEM_INFO info;
- GetSystemInfo(&info);
- return info.dwNumberOfProcessors;
-#elif defined(__APPLE__)
- int count;
- size_t len = sizeof(count);
- int mib[2] = {CTL_HW, HW_NCPU};
- sysctl(mib, 2, &count, &len, NULL, 0);
- return count;
-#else
- return sysconf(_SC_NPROCESSORS_ONLN);
-#endif
-}
-
-int system_cpu_thread_count()
-{
- const int num_nodes = system_cpu_num_numa_nodes();
- int num_threads = 0;
- for (int node = 0; node < num_nodes; ++node) {
- if (!system_cpu_is_numa_node_available(node)) {
- continue;
- }
- num_threads += system_cpu_num_numa_node_processors(node);
- }
- return num_threads;
-}
-
-int system_cpu_num_numa_nodes()
-{
- if (!system_cpu_ensure_initialized()) {
- /* Fallback to a single node with all the threads. */
- return 1;
- }
- return numaAPI_GetNumNodes();
-}
-
-bool system_cpu_is_numa_node_available(int node)
-{
- if (!system_cpu_ensure_initialized()) {
- return true;
- }
- return numaAPI_IsNodeAvailable(node);
-}
-
-int system_cpu_num_numa_node_processors(int node)
-{
- if (!system_cpu_ensure_initialized()) {
- return system_cpu_thread_count_fallback();
- }
- return numaAPI_GetNumNodeProcessors(node);
-}
-
-bool system_cpu_run_thread_on_node(int node)
-{
- if (!system_cpu_ensure_initialized()) {
- return true;
- }
- return numaAPI_RunThreadOnNode(node);
-}
-
-int system_console_width()
-{
- int columns = 0;
-
-#ifdef _WIN32
- CONSOLE_SCREEN_BUFFER_INFO csbi;
- if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi)) {
- columns = csbi.dwSize.X;
- }
-#else
- struct winsize w;
- if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) == 0) {
- columns = w.ws_col;
- }
-#endif
-
- return (columns > 0) ? columns : 80;
-}
-
-int system_cpu_num_active_group_processors()
-{
- if (!system_cpu_ensure_initialized()) {
- return system_cpu_thread_count_fallback();
- }
- return numaAPI_GetNumCurrentNodesProcessors();
-}
-
-/* Equivalent of Windows __cpuid for x86 processors on other platforms. */
-#if (!defined(_WIN32) || defined(FREE_WINDOWS)) && (defined(__x86_64__) || defined(__i386__))
-static void __cpuid(int data[4], int selector)
-{
-# if defined(__x86_64__)
- asm("cpuid" : "=a"(data[0]), "=b"(data[1]), "=c"(data[2]), "=d"(data[3]) : "a"(selector));
-# elif defined(__i386__)
- asm("pushl %%ebx \n\t"
- "cpuid \n\t"
- "movl %%ebx, %1 \n\t"
- "popl %%ebx \n\t"
- : "=a"(data[0]), "=r"(data[1]), "=c"(data[2]), "=d"(data[3])
- : "a"(selector)
- : "ebx");
-# else
- data[0] = data[1] = data[2] = data[3] = 0;
-# endif
-}
-#endif
-
-string system_cpu_brand_string()
-{
-#if defined(__APPLE__)
- /* Get from system on macOS. */
- char modelname[512] = "";
- size_t bufferlen = 512;
- if (sysctlbyname("machdep.cpu.brand_string", &modelname, &bufferlen, NULL, 0) == 0) {
- return modelname;
- }
-#elif defined(WIN32) || defined(__x86_64__) || defined(__i386__)
- /* Get from intrinsics on Windows and x86. */
- char buf[49] = {0};
- int result[4] = {0};
-
- __cpuid(result, 0x80000000);
-
- if (result[0] != 0 && result[0] >= (int)0x80000004) {
- __cpuid((int *)(buf + 0), 0x80000002);
- __cpuid((int *)(buf + 16), 0x80000003);
- __cpuid((int *)(buf + 32), 0x80000004);
-
- string brand = buf;
-
- /* Make it a bit more presentable. */
- brand = string_remove_trademark(brand);
-
- return brand;
- }
-#else
- /* Get from /proc/cpuinfo on Unix systems. */
- FILE *cpuinfo = fopen("/proc/cpuinfo", "r");
- if (cpuinfo != nullptr) {
- char cpuinfo_buf[513] = "";
- fread(cpuinfo_buf, sizeof(cpuinfo_buf) - 1, 1, cpuinfo);
- fclose(cpuinfo);
-
- char *modelname = strstr(cpuinfo_buf, "model name");
- if (modelname != nullptr) {
- modelname = strchr(modelname, ':');
- if (modelname != nullptr) {
- modelname += 2;
- char *modelname_end = strchr(modelname, '\n');
- if (modelname_end != nullptr) {
- *modelname_end = '\0';
- return modelname;
- }
- }
- }
- }
-#endif
- return "Unknown CPU";
-}
-
-int system_cpu_bits()
-{
- return (sizeof(void *) * 8);
-}
-
-#if defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || defined(_M_IX86)
-
-struct CPUCapabilities {
- bool x64;
- bool mmx;
- bool sse;
- bool sse2;
- bool sse3;
- bool ssse3;
- bool sse41;
- bool sse42;
- bool sse4a;
- bool avx;
- bool f16c;
- bool avx2;
- bool xop;
- bool fma3;
- bool fma4;
- bool bmi1;
- bool bmi2;
-};
-
-static CPUCapabilities &system_cpu_capabilities()
-{
- static CPUCapabilities caps;
- static bool caps_init = false;
-
- if (!caps_init) {
- int result[4], num;
-
- memset(&caps, 0, sizeof(caps));
-
- __cpuid(result, 0);
- num = result[0];
-
- if (num >= 1) {
- __cpuid(result, 0x00000001);
- caps.mmx = (result[3] & ((int)1 << 23)) != 0;
- caps.sse = (result[3] & ((int)1 << 25)) != 0;
- caps.sse2 = (result[3] & ((int)1 << 26)) != 0;
- caps.sse3 = (result[2] & ((int)1 << 0)) != 0;
-
- caps.ssse3 = (result[2] & ((int)1 << 9)) != 0;
- caps.sse41 = (result[2] & ((int)1 << 19)) != 0;
- caps.sse42 = (result[2] & ((int)1 << 20)) != 0;
-
- caps.fma3 = (result[2] & ((int)1 << 12)) != 0;
- caps.avx = false;
- bool os_uses_xsave_xrestore = (result[2] & ((int)1 << 27)) != 0;
- bool cpu_avx_support = (result[2] & ((int)1 << 28)) != 0;
-
- if (os_uses_xsave_xrestore && cpu_avx_support) {
- // Check if the OS will save the YMM registers
- uint32_t xcr_feature_mask;
-# if defined(__GNUC__)
- int edx; /* not used */
- /* actual opcode for xgetbv */
- __asm__(".byte 0x0f, 0x01, 0xd0" : "=a"(xcr_feature_mask), "=d"(edx) : "c"(0));
-# elif defined(_MSC_VER) && defined(_XCR_XFEATURE_ENABLED_MASK)
- /* Minimum VS2010 SP1 compiler is required. */
- xcr_feature_mask = (uint32_t)_xgetbv(_XCR_XFEATURE_ENABLED_MASK);
-# else
- xcr_feature_mask = 0;
-# endif
- caps.avx = (xcr_feature_mask & 0x6) == 0x6;
- }
-
- caps.f16c = (result[2] & ((int)1 << 29)) != 0;
-
- __cpuid(result, 0x00000007);
- caps.bmi1 = (result[1] & ((int)1 << 3)) != 0;
- caps.bmi2 = (result[1] & ((int)1 << 8)) != 0;
- caps.avx2 = (result[1] & ((int)1 << 5)) != 0;
- }
-
- caps_init = true;
- }
-
- return caps;
-}
-
-bool system_cpu_support_sse2()
-{
- CPUCapabilities &caps = system_cpu_capabilities();
- return caps.sse && caps.sse2;
-}
-
-bool system_cpu_support_sse3()
-{
- CPUCapabilities &caps = system_cpu_capabilities();
- return caps.sse && caps.sse2 && caps.sse3 && caps.ssse3;
-}
-
-bool system_cpu_support_sse41()
-{
- CPUCapabilities &caps = system_cpu_capabilities();
- return caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41;
-}
-
-bool system_cpu_support_avx()
-{
- CPUCapabilities &caps = system_cpu_capabilities();
- return caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41 && caps.avx;
-}
-
-bool system_cpu_support_avx2()
-{
- CPUCapabilities &caps = system_cpu_capabilities();
- return caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41 && caps.avx && caps.f16c &&
- caps.avx2 && caps.fma3 && caps.bmi1 && caps.bmi2;
-}
-#else
-
-bool system_cpu_support_sse2()
-{
- return false;
-}
-
-bool system_cpu_support_sse3()
-{
- return false;
-}
-
-bool system_cpu_support_sse41()
-{
- return false;
-}
-
-bool system_cpu_support_avx()
-{
- return false;
-}
-bool system_cpu_support_avx2()
-{
- return false;
-}
-
-#endif
-
-bool system_call_self(const vector<string> &args)
-{
- /* Escape program and arguments in case they contain spaces. */
- string cmd = "\"" + Sysutil::this_program_path() + "\"";
-
- for (int i = 0; i < args.size(); i++) {
- cmd += " \"" + args[i] + "\"";
- }
-
-#ifdef _WIN32
- /* Use cmd /S to avoid issues with spaces in arguments. */
- cmd = "cmd /S /C \"" + cmd + " > nul \"";
-#else
- /* Quiet output. */
- cmd += " > /dev/null";
-#endif
-
- return (system(cmd.c_str()) == 0);
-}
-
-size_t system_physical_ram()
-{
-#ifdef _WIN32
- MEMORYSTATUSEX ram;
- ram.dwLength = sizeof(ram);
- GlobalMemoryStatusEx(&ram);
- return ram.ullTotalPhys;
-#elif defined(__APPLE__)
- uint64_t ram = 0;
- size_t len = sizeof(ram);
- if (sysctlbyname("hw.memsize", &ram, &len, NULL, 0) == 0) {
- return ram;
- }
- return 0;
-#else
- size_t ps = sysconf(_SC_PAGESIZE);
- size_t pn = sysconf(_SC_PHYS_PAGES);
- return ps * pn;
-#endif
-}
-
-uint64_t system_self_process_id()
-{
-#ifdef _WIN32
- return GetCurrentProcessId();
-#else
- return getpid();
-#endif
-}
-
-CCL_NAMESPACE_END
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