0579eaae1f
The idea is to make include statements more explicit and obvious where the file is coming from, additionally reducing chance of wrong header being picked up. For example, it was not obvious whether bvh.h was refferring to builder or traversal, whenter node.h is a generic graph node or a shader node and cases like that. Surely this might look obvious for the active developers, but after some time of not touching the code it becomes less obvious where file is coming from. This was briefly mentioned in T50824 and seems @brecht is fine with such explicitness, but need to agree with all active developers before committing this. Please note that this patch is lacking changes related on GPU/OpenCL support. This will be solved if/when we all agree this is a good idea to move forward. Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner Reviewed By: lukasstockner97, maiself, nirved, dingto Subscribers: brecht Differential Revision: https://developer.blender.org/D2586
297 lines
6.5 KiB
C++
297 lines
6.5 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "util/util_system.h"
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#include "util/util_debug.h"
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#include "util/util_logging.h"
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#include "util/util_types.h"
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#include "util/util_string.h"
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#ifdef _WIN32
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# if(!defined(FREE_WINDOWS))
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# include <intrin.h>
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# endif
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# include "util_windows.h"
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#elif defined(__APPLE__)
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# include <sys/sysctl.h>
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# include <sys/types.h>
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#else
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# include <unistd.h>
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#endif
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CCL_NAMESPACE_BEGIN
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int system_cpu_group_count()
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{
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#ifdef _WIN32
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util_windows_init_numa_groups();
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return GetActiveProcessorGroupCount();
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#else
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/* TODO(sergey): Need to adopt for other platforms. */
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return 1;
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#endif
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}
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int system_cpu_group_thread_count(int group)
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{
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/* TODO(sergey): Need make other platforms aware of groups. */
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#ifdef _WIN32
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util_windows_init_numa_groups();
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return GetActiveProcessorCount(group);
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#elif defined(__APPLE__)
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(void)group;
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int count;
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size_t len = sizeof(count);
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int mib[2] = { CTL_HW, HW_NCPU };
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sysctl(mib, 2, &count, &len, NULL, 0);
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return count;
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#else
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(void)group;
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return sysconf(_SC_NPROCESSORS_ONLN);
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#endif
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}
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int system_cpu_thread_count()
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{
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static uint count = 0;
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if(count > 0) {
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return count;
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}
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int max_group = system_cpu_group_count();
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VLOG(1) << "Detected " << max_group << " CPU groups.";
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for(int group = 0; group < max_group; ++group) {
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int num_threads = system_cpu_group_thread_count(group);
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VLOG(1) << "Group " << group
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<< " has " << num_threads << " threads.";
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count += num_threads;
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}
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if(count < 1) {
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count = 1;
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}
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return count;
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}
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unsigned short system_cpu_process_groups(unsigned short max_groups,
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unsigned short *groups)
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{
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#ifdef _WIN32
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unsigned short group_count = max_groups;
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if(!GetProcessGroupAffinity(GetCurrentProcess(), &group_count, groups)) {
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return 0;
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}
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return group_count;
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#else
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(void) max_groups;
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(void) groups;
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return 0;
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#endif
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}
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#if !defined(_WIN32) || defined(FREE_WINDOWS)
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static void __cpuid(int data[4], int selector)
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{
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#ifdef __x86_64__
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asm("cpuid" : "=a" (data[0]), "=b" (data[1]), "=c" (data[2]), "=d" (data[3]) : "a"(selector));
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#else
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#ifdef __i386__
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asm("pushl %%ebx \n\t"
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"cpuid \n\t"
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"movl %%ebx, %1 \n\t"
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"popl %%ebx \n\t" : "=a" (data[0]), "=r" (data[1]), "=c" (data[2]), "=d" (data[3]) : "a"(selector));
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#else
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data[0] = data[1] = data[2] = data[3] = 0;
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#endif
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#endif
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}
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#endif
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string system_cpu_brand_string()
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{
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char buf[48];
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int result[4];
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__cpuid(result, 0x80000000);
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if(result[0] >= (int)0x80000004) {
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__cpuid((int*)(buf+0), 0x80000002);
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__cpuid((int*)(buf+16), 0x80000003);
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__cpuid((int*)(buf+32), 0x80000004);
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string brand = buf;
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/* make it a bit more presentable */
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brand = string_remove_trademark(brand);
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return brand;
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}
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return "Unknown CPU";
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}
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int system_cpu_bits()
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{
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return (sizeof(void*)*8);
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}
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#if defined(__x86_64__) || defined(_M_X64) || defined(i386) || defined(_M_IX86)
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struct CPUCapabilities {
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bool x64;
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bool mmx;
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bool sse;
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bool sse2;
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bool sse3;
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bool ssse3;
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bool sse41;
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bool sse42;
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bool sse4a;
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bool avx;
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bool f16c;
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bool avx2;
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bool xop;
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bool fma3;
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bool fma4;
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bool bmi1;
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bool bmi2;
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};
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static CPUCapabilities& system_cpu_capabilities()
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{
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static CPUCapabilities caps;
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static bool caps_init = false;
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if(!caps_init) {
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int result[4], num;
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memset(&caps, 0, sizeof(caps));
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__cpuid(result, 0);
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num = result[0];
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if(num >= 1) {
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__cpuid(result, 0x00000001);
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caps.mmx = (result[3] & ((int)1 << 23)) != 0;
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caps.sse = (result[3] & ((int)1 << 25)) != 0;
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caps.sse2 = (result[3] & ((int)1 << 26)) != 0;
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caps.sse3 = (result[2] & ((int)1 << 0)) != 0;
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caps.ssse3 = (result[2] & ((int)1 << 9)) != 0;
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caps.sse41 = (result[2] & ((int)1 << 19)) != 0;
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caps.sse42 = (result[2] & ((int)1 << 20)) != 0;
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caps.fma3 = (result[2] & ((int)1 << 12)) != 0;
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caps.avx = false;
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bool os_uses_xsave_xrestore = (result[2] & ((int)1 << 27)) != 0;
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bool cpu_avx_support = (result[2] & ((int)1 << 28)) != 0;
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if( os_uses_xsave_xrestore && cpu_avx_support) {
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// Check if the OS will save the YMM registers
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uint32_t xcr_feature_mask;
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#if defined(__GNUC__)
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int edx; /* not used */
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/* actual opcode for xgetbv */
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__asm__ (".byte 0x0f, 0x01, 0xd0" : "=a" (xcr_feature_mask) , "=d" (edx) : "c" (0) );
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#elif defined(_MSC_VER) && defined(_XCR_XFEATURE_ENABLED_MASK)
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xcr_feature_mask = (uint32_t)_xgetbv(_XCR_XFEATURE_ENABLED_MASK); /* min VS2010 SP1 compiler is required */
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#else
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xcr_feature_mask = 0;
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#endif
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caps.avx = (xcr_feature_mask & 0x6) == 0x6;
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}
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caps.f16c = (result[2] & ((int)1 << 29)) != 0;
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__cpuid(result, 0x00000007);
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caps.bmi1 = (result[1] & ((int)1 << 3)) != 0;
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caps.bmi2 = (result[1] & ((int)1 << 8)) != 0;
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caps.avx2 = (result[1] & ((int)1 << 5)) != 0;
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}
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caps_init = true;
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}
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return caps;
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}
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bool system_cpu_support_sse2()
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{
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CPUCapabilities& caps = system_cpu_capabilities();
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return DebugFlags().cpu.sse2 && caps.sse && caps.sse2;
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}
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bool system_cpu_support_sse3()
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{
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CPUCapabilities& caps = system_cpu_capabilities();
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return DebugFlags().cpu.sse3 &&
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caps.sse && caps.sse2 && caps.sse3 && caps.ssse3;
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}
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bool system_cpu_support_sse41()
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{
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CPUCapabilities& caps = system_cpu_capabilities();
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return DebugFlags().cpu.sse41 &&
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caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41;
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}
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bool system_cpu_support_avx()
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{
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CPUCapabilities& caps = system_cpu_capabilities();
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return DebugFlags().cpu.avx &&
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caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41 && caps.avx;
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}
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bool system_cpu_support_avx2()
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{
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CPUCapabilities& caps = system_cpu_capabilities();
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return DebugFlags().cpu.avx2 &&
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caps.sse && caps.sse2 && caps.sse3 && caps.ssse3 && caps.sse41 && caps.avx && caps.f16c && caps.avx2 && caps.fma3 && caps.bmi1 && caps.bmi2;
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}
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#else
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bool system_cpu_support_sse2()
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{
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return false;
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}
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bool system_cpu_support_sse3()
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{
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return false;
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}
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bool system_cpu_support_sse41()
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{
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return false;
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}
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bool system_cpu_support_avx()
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{
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return false;
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}
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bool system_cpu_support_avx2()
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{
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return false;
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}
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#endif
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CCL_NAMESPACE_END
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