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system.cpp
2914 lines (2572 loc) · 87.1 KB
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system.cpp
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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Copyright (C) 2015, Itseez Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#include <atomic>
#include <iostream>
#include <ostream>
#include <opencv2/core/utils/configuration.private.hpp>
#include <opencv2/core/utils/trace.private.hpp>
#include <opencv2/core/utils/logger.hpp>
#include <opencv2/core/utils/tls.hpp>
#include <opencv2/core/utils/instrumentation.hpp>
#include <opencv2/core/utils/filesystem.private.hpp>
#include <opencv2/core/utils/fp_control_utils.hpp>
#include <opencv2/core/utils/fp_control.private.hpp>
namespace cv {
static void _initSystem()
{
#ifdef __ANDROID__
// https://github.com/opencv/opencv/issues/14906
// "ios_base::Init" object is not a part of Android's "iostream" header (in case of clang toolchain, NDK 20).
// Ref1: https://en.cppreference.com/w/cpp/io/ios_base/Init
// The header <iostream> behaves as if it defines (directly or indirectly) an instance of std::ios_base::Init with static storage duration
// Ref2: https://github.com/gcc-mirror/gcc/blob/gcc-8-branch/libstdc%2B%2B-v3/include/std/iostream#L73-L74
static std::ios_base::Init s_iostream_initializer;
#endif
}
static Mutex* __initialization_mutex = NULL;
Mutex& getInitializationMutex()
{
if (__initialization_mutex == NULL)
{
(void)_initSystem();
__initialization_mutex = new Mutex();
}
return *__initialization_mutex;
}
// force initialization (single-threaded environment)
Mutex* __initialization_mutex_initializer = &getInitializationMutex();
static bool param_dumpErrors = utils::getConfigurationParameterBool("OPENCV_DUMP_ERRORS",
#if defined(_DEBUG) || defined(__ANDROID__)
true
#else
false
#endif
);
void* allocSingletonBuffer(size_t size) { return fastMalloc(size); }
void* allocSingletonNewBuffer(size_t size) { return malloc(size); }
} // namespace cv
#ifndef CV_ERROR_SET_TERMINATE_HANDLER // build config option
# if defined(_WIN32)
# define CV_ERROR_SET_TERMINATE_HANDLER 1
# endif
#endif
#if defined(CV_ERROR_SET_TERMINATE_HANDLER) && !CV_ERROR_SET_TERMINATE_HANDLER
# undef CV_ERROR_SET_TERMINATE_HANDLER
#endif
#ifdef _MSC_VER
# if _MSC_VER >= 1700
# pragma warning(disable:4447) // Disable warning 'main' signature found without threading model
# endif
#endif
#ifdef CV_ERROR_SET_TERMINATE_HANDLER
#include <exception> // std::set_terminate
#include <cstdlib> // std::abort
#endif
#if defined __ANDROID__ || defined __unix__ || defined __FreeBSD__ || defined __OpenBSD__ || defined __HAIKU__ || defined __Fuchsia__
# include <unistd.h>
# include <fcntl.h>
#if defined __QNX__
# include <sys/elf.h>
#else
# include <elf.h>
#endif
#if defined __ANDROID__ || defined __linux__
# include <linux/auxvec.h>
#endif
#endif
#if defined __ANDROID__ && defined HAVE_CPUFEATURES
# include <cpu-features.h>
#endif
#if (defined __ppc64__ || defined __PPC64__) && defined __unix__
# include "sys/auxv.h"
# ifndef AT_HWCAP2
# define AT_HWCAP2 26
# endif
# ifndef PPC_FEATURE2_ARCH_2_07
# define PPC_FEATURE2_ARCH_2_07 0x80000000
# endif
# ifndef PPC_FEATURE2_ARCH_3_00
# define PPC_FEATURE2_ARCH_3_00 0x00800000
# endif
# ifndef PPC_FEATURE_HAS_VSX
# define PPC_FEATURE_HAS_VSX 0x00000080
# endif
#endif
#if defined _WIN32 || defined WINCE
#ifndef _WIN32_WINNT // This is needed for the declaration of TryEnterCriticalSection in winbase.h with Visual Studio 2005 (and older?)
#define _WIN32_WINNT 0x0400 // http://msdn.microsoft.com/en-us/library/ms686857(VS.85).aspx
#endif
#include <windows.h>
#if (_WIN32_WINNT >= 0x0602)
#include <synchapi.h>
#endif
#if ((_WIN32_WINNT >= 0x0600) && !defined(CV_DISABLE_FLS)) || defined(CV_FORCE_FLS)
#include <fibersapi.h>
#define CV_USE_FLS
#endif
#undef small
#undef min
#undef max
#undef abs
#include <tchar.h>
#ifdef WINRT
#include <wrl/client.h>
#ifndef __cplusplus_winrt
#include <windows.storage.h>
#pragma comment(lib, "runtimeobject.lib")
#endif // WINRT
std::wstring GetTempPathWinRT()
{
#ifdef __cplusplus_winrt
return std::wstring(Windows::Storage::ApplicationData::Current->TemporaryFolder->Path->Data());
#else
Microsoft::WRL::ComPtr<ABI::Windows::Storage::IApplicationDataStatics> appdataFactory;
Microsoft::WRL::ComPtr<ABI::Windows::Storage::IApplicationData> appdataRef;
Microsoft::WRL::ComPtr<ABI::Windows::Storage::IStorageFolder> storagefolderRef;
Microsoft::WRL::ComPtr<ABI::Windows::Storage::IStorageItem> storageitemRef;
HSTRING str;
HSTRING_HEADER hstrHead;
std::wstring wstr;
if (FAILED(WindowsCreateStringReference(RuntimeClass_Windows_Storage_ApplicationData,
(UINT32)wcslen(RuntimeClass_Windows_Storage_ApplicationData), &hstrHead, &str)))
return wstr;
if (FAILED(RoGetActivationFactory(str, IID_PPV_ARGS(appdataFactory.ReleaseAndGetAddressOf()))))
return wstr;
if (FAILED(appdataFactory->get_Current(appdataRef.ReleaseAndGetAddressOf())))
return wstr;
if (FAILED(appdataRef->get_TemporaryFolder(storagefolderRef.ReleaseAndGetAddressOf())))
return wstr;
if (FAILED(storagefolderRef.As(&storageitemRef)))
return wstr;
str = NULL;
if (FAILED(storageitemRef->get_Path(&str)))
return wstr;
wstr = WindowsGetStringRawBuffer(str, NULL);
WindowsDeleteString(str);
return wstr;
#endif
}
std::wstring GetTempFileNameWinRT(std::wstring prefix)
{
wchar_t guidStr[40];
GUID g;
CoCreateGuid(&g);
wchar_t* mask = L"%08x_%04x_%04x_%02x%02x_%02x%02x%02x%02x%02x%02x";
swprintf(&guidStr[0], sizeof(guidStr)/sizeof(wchar_t), mask,
g.Data1, g.Data2, g.Data3, UINT(g.Data4[0]), UINT(g.Data4[1]),
UINT(g.Data4[2]), UINT(g.Data4[3]), UINT(g.Data4[4]),
UINT(g.Data4[5]), UINT(g.Data4[6]), UINT(g.Data4[7]));
return prefix.append(std::wstring(guidStr));
}
#endif
#else
#ifndef OPENCV_DISABLE_THREAD_SUPPORT
#include <pthread.h>
#endif
#include <sys/time.h>
#include <time.h>
#if defined __MACH__ && defined __APPLE__
#include <mach/mach.h>
#include <mach/mach_time.h>
#include <sys/sysctl.h>
#endif
#endif
#ifdef _OPENMP
#include "omp.h"
#endif
#if defined __unix__ || defined __APPLE__ || defined __EMSCRIPTEN__ || defined __FreeBSD__ || defined __GLIBC__ || defined __HAIKU__
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#if defined __ANDROID__
#include <sys/sysconf.h>
#endif
#endif
#ifdef __ANDROID__
# include <android/log.h>
#endif
#ifdef DECLARE_CV_CPUID_X86
DECLARE_CV_CPUID_X86
#endif
#ifndef CV_CPUID_X86
#if defined _MSC_VER && (defined _M_IX86 || defined _M_X64)
#if _MSC_VER >= 1400 // MSVS 2005
#include <intrin.h> // __cpuidex()
#define CV_CPUID_X86 __cpuidex
#else
#error "Required MSVS 2005+"
#endif
#elif defined __GNUC__ && (defined __i386__ || defined __x86_64__)
static void cv_cpuid(int* cpuid_data, int reg_eax, int reg_ecx)
{
int __eax = reg_eax, __ebx = 0, __ecx = reg_ecx, __edx = 0;
// tested with available compilers (-fPIC -O2 -m32/-m64): https://godbolt.org/
#if !defined(__PIC__) \
|| defined(__x86_64__) || __GNUC__ >= 5 \
|| defined(__clang__) || defined(__INTEL_COMPILER)
__asm__("cpuid\n\t"
: "+a" (__eax), "=b" (__ebx), "+c" (__ecx), "=d" (__edx)
);
#elif defined(__i386__) // ebx may be reserved as the PIC register
__asm__("xchg{l}\t{%%}ebx, %1\n\t"
"cpuid\n\t"
"xchg{l}\t{%%}ebx, %1\n\t"
: "+a" (__eax), "=&r" (__ebx), "+c" (__ecx), "=d" (__edx)
);
#else
#error "Configuration error"
#endif
cpuid_data[0] = __eax; cpuid_data[1] = __ebx; cpuid_data[2] = __ecx; cpuid_data[3] = __edx;
}
#define CV_CPUID_X86 cv_cpuid
#endif
#endif
#if defined CV_CXX11
#include <chrono>
#endif
namespace cv
{
Exception::Exception() { code = 0; line = 0; }
Exception::Exception(int _code, const String& _err, const String& _func, const String& _file, int _line)
: code(_code), err(_err), func(_func), file(_file), line(_line)
{
formatMessage();
}
Exception::~Exception() throw() {}
/*!
\return the error description and the context as a text string.
*/
const char* Exception::what() const throw() { return msg.c_str(); }
void Exception::formatMessage()
{
size_t pos = err.find('\n');
bool multiline = pos != cv::String::npos;
if (multiline)
{
std::stringstream ss;
size_t prev_pos = 0;
while (pos != cv::String::npos)
{
ss << "> " << err.substr(prev_pos, pos - prev_pos) << std::endl;
prev_pos = pos + 1;
pos = err.find('\n', prev_pos);
}
ss << "> " << err.substr(prev_pos);
if (err[err.size() - 1] != '\n')
ss << std::endl;
err = ss.str();
}
if (func.size() > 0)
{
if (multiline)
msg = format("OpenCV(%s) %s:%d: error: (%d:%s) in function '%s'\n%s", CV_VERSION, file.c_str(), line, code, cvErrorStr(code), func.c_str(), err.c_str());
else
msg = format("OpenCV(%s) %s:%d: error: (%d:%s) %s in function '%s'\n", CV_VERSION, file.c_str(), line, code, cvErrorStr(code), err.c_str(), func.c_str());
}
else
{
msg = format("OpenCV(%s) %s:%d: error: (%d:%s) %s%s", CV_VERSION, file.c_str(), line, code, cvErrorStr(code), err.c_str(), multiline ? "" : "\n");
}
}
static const char* g_hwFeatureNames[CV_HARDWARE_MAX_FEATURE] = { NULL };
static const char* getHWFeatureName(int id)
{
return (id < CV_HARDWARE_MAX_FEATURE) ? g_hwFeatureNames[id] : NULL;
}
static const char* getHWFeatureNameSafe(int id)
{
const char* name = getHWFeatureName(id);
return name ? name : "Unknown feature";
}
struct HWFeatures
{
enum { MAX_FEATURE = CV_HARDWARE_MAX_FEATURE };
HWFeatures(bool run_initialize = false)
{
if (run_initialize)
initialize();
}
static void initializeNames()
{
for (int i = 0; i < CV_HARDWARE_MAX_FEATURE; i++)
{
g_hwFeatureNames[i] = 0;
}
g_hwFeatureNames[CPU_MMX] = "MMX";
g_hwFeatureNames[CPU_SSE] = "SSE";
g_hwFeatureNames[CPU_SSE2] = "SSE2";
g_hwFeatureNames[CPU_SSE3] = "SSE3";
g_hwFeatureNames[CPU_SSSE3] = "SSSE3";
g_hwFeatureNames[CPU_SSE4_1] = "SSE4.1";
g_hwFeatureNames[CPU_SSE4_2] = "SSE4.2";
g_hwFeatureNames[CPU_POPCNT] = "POPCNT";
g_hwFeatureNames[CPU_FP16] = "FP16";
g_hwFeatureNames[CPU_AVX] = "AVX";
g_hwFeatureNames[CPU_AVX2] = "AVX2";
g_hwFeatureNames[CPU_FMA3] = "FMA3";
g_hwFeatureNames[CPU_AVX_512F] = "AVX512F";
g_hwFeatureNames[CPU_AVX_512BW] = "AVX512BW";
g_hwFeatureNames[CPU_AVX_512CD] = "AVX512CD";
g_hwFeatureNames[CPU_AVX_512DQ] = "AVX512DQ";
g_hwFeatureNames[CPU_AVX_512ER] = "AVX512ER";
g_hwFeatureNames[CPU_AVX_512IFMA] = "AVX512IFMA";
g_hwFeatureNames[CPU_AVX_512PF] = "AVX512PF";
g_hwFeatureNames[CPU_AVX_512VBMI] = "AVX512VBMI";
g_hwFeatureNames[CPU_AVX_512VL] = "AVX512VL";
g_hwFeatureNames[CPU_AVX_512VBMI2] = "AVX512VBMI2";
g_hwFeatureNames[CPU_AVX_512VNNI] = "AVX512VNNI";
g_hwFeatureNames[CPU_AVX_512BITALG] = "AVX512BITALG";
g_hwFeatureNames[CPU_AVX_512VPOPCNTDQ] = "AVX512VPOPCNTDQ";
g_hwFeatureNames[CPU_AVX_5124VNNIW] = "AVX5124VNNIW";
g_hwFeatureNames[CPU_AVX_5124FMAPS] = "AVX5124FMAPS";
g_hwFeatureNames[CPU_NEON] = "NEON";
g_hwFeatureNames[CPU_NEON_DOTPROD] = "NEON_DOTPROD";
g_hwFeatureNames[CPU_NEON_FP16] = "NEON_FP16";
g_hwFeatureNames[CPU_NEON_BF16] = "NEON_BF16";
g_hwFeatureNames[CPU_VSX] = "VSX";
g_hwFeatureNames[CPU_VSX3] = "VSX3";
g_hwFeatureNames[CPU_MSA] = "CPU_MSA";
g_hwFeatureNames[CPU_RISCVV] = "RISCVV";
g_hwFeatureNames[CPU_AVX512_COMMON] = "AVX512-COMMON";
g_hwFeatureNames[CPU_AVX512_SKX] = "AVX512-SKX";
g_hwFeatureNames[CPU_AVX512_KNL] = "AVX512-KNL";
g_hwFeatureNames[CPU_AVX512_KNM] = "AVX512-KNM";
g_hwFeatureNames[CPU_AVX512_CNL] = "AVX512-CNL";
g_hwFeatureNames[CPU_AVX512_CLX] = "AVX512-CLX";
g_hwFeatureNames[CPU_AVX512_ICL] = "AVX512-ICL";
g_hwFeatureNames[CPU_RVV] = "RVV";
g_hwFeatureNames[CPU_LSX] = "LSX";
g_hwFeatureNames[CPU_LASX] = "LASX";
}
void initialize(void)
{
#ifndef NO_GETENV
if (getenv("OPENCV_DUMP_CONFIG"))
{
fprintf(stderr, "\nOpenCV build configuration is:\n%s\n",
cv::getBuildInformation().c_str());
}
#endif
initializeNames();
#ifdef CV_CPUID_X86
int cpuid_data[4] = { 0, 0, 0, 0 };
int cpuid_data_ex[4] = { 0, 0, 0, 0 };
CV_CPUID_X86(cpuid_data, 1, 0/*unused*/);
int x86_family = (cpuid_data[0] >> 8) & 15;
if( x86_family >= 6 )
{
have[CV_CPU_MMX] = (cpuid_data[3] & (1<<23)) != 0;
have[CV_CPU_SSE] = (cpuid_data[3] & (1<<25)) != 0;
have[CV_CPU_SSE2] = (cpuid_data[3] & (1<<26)) != 0;
have[CV_CPU_SSE3] = (cpuid_data[2] & (1<<0)) != 0;
have[CV_CPU_SSSE3] = (cpuid_data[2] & (1<<9)) != 0;
have[CV_CPU_FMA3] = (cpuid_data[2] & (1<<12)) != 0;
have[CV_CPU_SSE4_1] = (cpuid_data[2] & (1<<19)) != 0;
have[CV_CPU_SSE4_2] = (cpuid_data[2] & (1<<20)) != 0;
have[CV_CPU_POPCNT] = (cpuid_data[2] & (1<<23)) != 0;
have[CV_CPU_AVX] = (cpuid_data[2] & (1<<28)) != 0;
have[CV_CPU_FP16] = (cpuid_data[2] & (1<<29)) != 0;
// make the second call to the cpuid command in order to get
// information about extended features like AVX2
CV_CPUID_X86(cpuid_data_ex, 7, 0);
have[CV_CPU_AVX2] = (cpuid_data_ex[1] & (1<<5)) != 0;
have[CV_CPU_AVX_512F] = (cpuid_data_ex[1] & (1<<16)) != 0;
have[CV_CPU_AVX_512DQ] = (cpuid_data_ex[1] & (1<<17)) != 0;
have[CV_CPU_AVX_512IFMA] = (cpuid_data_ex[1] & (1<<21)) != 0;
have[CV_CPU_AVX_512PF] = (cpuid_data_ex[1] & (1<<26)) != 0;
have[CV_CPU_AVX_512ER] = (cpuid_data_ex[1] & (1<<27)) != 0;
have[CV_CPU_AVX_512CD] = (cpuid_data_ex[1] & (1<<28)) != 0;
have[CV_CPU_AVX_512BW] = (cpuid_data_ex[1] & (1<<30)) != 0;
have[CV_CPU_AVX_512VL] = (cpuid_data_ex[1] & (1<<31)) != 0;
have[CV_CPU_AVX_512VBMI] = (cpuid_data_ex[2] & (1<<1)) != 0;
have[CV_CPU_AVX_512VBMI2] = (cpuid_data_ex[2] & (1<<6)) != 0;
have[CV_CPU_AVX_512VNNI] = (cpuid_data_ex[2] & (1<<11)) != 0;
have[CV_CPU_AVX_512BITALG] = (cpuid_data_ex[2] & (1<<12)) != 0;
have[CV_CPU_AVX_512VPOPCNTDQ] = (cpuid_data_ex[2] & (1<<14)) != 0;
have[CV_CPU_AVX_5124VNNIW] = (cpuid_data_ex[3] & (1<<2)) != 0;
have[CV_CPU_AVX_5124FMAPS] = (cpuid_data_ex[3] & (1<<3)) != 0;
bool have_AVX_OS_support = true;
bool have_AVX512_OS_support = true;
if (!(cpuid_data[2] & (1<<27)))
have_AVX_OS_support = false; // OS uses XSAVE_XRSTORE and CPU support AVX
else
{
int xcr0 = 0;
#ifdef _XCR_XFEATURE_ENABLED_MASK // requires immintrin.h
xcr0 = (int)_xgetbv(_XCR_XFEATURE_ENABLED_MASK);
#elif defined __GNUC__ && (defined __i386__ || defined __x86_64__)
__asm__ ("xgetbv\n\t" : "=a" (xcr0) : "c" (0) : "%edx" );
#endif
if ((xcr0 & 0x6) != 0x6)
have_AVX_OS_support = false; // YMM registers
if ((xcr0 & 0xe6) != 0xe6)
have_AVX512_OS_support = false; // ZMM registers
}
if (!have_AVX_OS_support)
{
have[CV_CPU_AVX] = false;
have[CV_CPU_FP16] = false;
have[CV_CPU_AVX2] = false;
have[CV_CPU_FMA3] = false;
}
if (!have_AVX_OS_support || !have_AVX512_OS_support)
{
have[CV_CPU_AVX_512F] = false;
have[CV_CPU_AVX_512BW] = false;
have[CV_CPU_AVX_512CD] = false;
have[CV_CPU_AVX_512DQ] = false;
have[CV_CPU_AVX_512ER] = false;
have[CV_CPU_AVX_512IFMA] = false;
have[CV_CPU_AVX_512PF] = false;
have[CV_CPU_AVX_512VBMI] = false;
have[CV_CPU_AVX_512VL] = false;
have[CV_CPU_AVX_512VBMI2] = false;
have[CV_CPU_AVX_512VNNI] = false;
have[CV_CPU_AVX_512BITALG] = false;
have[CV_CPU_AVX_512VPOPCNTDQ] = false;
have[CV_CPU_AVX_5124VNNIW] = false;
have[CV_CPU_AVX_5124FMAPS] = false;
}
have[CV_CPU_AVX512_COMMON] = have[CV_CPU_AVX_512F] && have[CV_CPU_AVX_512CD];
if (have[CV_CPU_AVX512_COMMON])
{
have[CV_CPU_AVX512_KNL] = have[CV_CPU_AVX_512ER] && have[CV_CPU_AVX_512PF];
have[CV_CPU_AVX512_KNM] = have[CV_CPU_AVX512_KNL] && have[CV_CPU_AVX_5124FMAPS] &&
have[CV_CPU_AVX_5124VNNIW] && have[CV_CPU_AVX_512VPOPCNTDQ];
have[CV_CPU_AVX512_SKX] = have[CV_CPU_AVX_512BW] && have[CV_CPU_AVX_512DQ] && have[CV_CPU_AVX_512VL];
have[CV_CPU_AVX512_CNL] = have[CV_CPU_AVX512_SKX] && have[CV_CPU_AVX_512IFMA] && have[CV_CPU_AVX_512VBMI];
have[CV_CPU_AVX512_CLX] = have[CV_CPU_AVX512_SKX] && have[CV_CPU_AVX_512VNNI];
have[CV_CPU_AVX512_ICL] = have[CV_CPU_AVX512_SKX] &&
have[CV_CPU_AVX_512IFMA] && have[CV_CPU_AVX_512VBMI] &&
have[CV_CPU_AVX_512VNNI] &&
have[CV_CPU_AVX_512VBMI2] && have[CV_CPU_AVX_512BITALG] && have[CV_CPU_AVX_512VPOPCNTDQ];
}
else
{
have[CV_CPU_AVX512_KNL] = false;
have[CV_CPU_AVX512_KNM] = false;
have[CV_CPU_AVX512_SKX] = false;
have[CV_CPU_AVX512_CNL] = false;
have[CV_CPU_AVX512_CLX] = false;
have[CV_CPU_AVX512_ICL] = false;
}
}
#endif // CV_CPUID_X86
#if defined __ANDROID__ || defined __linux__ || defined __FreeBSD__ || defined __QNX__
#ifdef __aarch64__
have[CV_CPU_NEON] = true;
have[CV_CPU_FP16] = true;
int cpufile = open("/proc/self/auxv", O_RDONLY);
if (cpufile >= 0)
{
Elf64_auxv_t auxv;
const size_t size_auxv_t = sizeof(auxv);
while ((size_t)read(cpufile, &auxv, size_auxv_t) == size_auxv_t)
{
// see https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/uapi/asm/hwcap.h
if (auxv.a_type == AT_HWCAP)
{
have[CV_CPU_NEON_DOTPROD] = (auxv.a_un.a_val & (1 << 20)) != 0; // HWCAP_ASIMDDP
have[CV_CPU_NEON_FP16] = (auxv.a_un.a_val & (1 << 10)) != 0; // HWCAP_ASIMDHP
}
else if (auxv.a_type == AT_HWCAP2)
{
have[CV_CPU_NEON_BF16] = (auxv.a_un.a_val & (1 << 14)) != 0; // HWCAP2_BF16
}
}
close(cpufile);
}
#elif defined __arm__ && defined __ANDROID__
#if defined HAVE_CPUFEATURES
CV_LOG_INFO(NULL, "calling android_getCpuFeatures() ...");
uint64_t features = android_getCpuFeatures();
CV_LOG_INFO(NULL, cv::format("calling android_getCpuFeatures() ... Done (%llx)", (long long)features));
have[CV_CPU_NEON] = (features & ANDROID_CPU_ARM_FEATURE_NEON) != 0;
have[CV_CPU_FP16] = (features & ANDROID_CPU_ARM_FEATURE_VFP_FP16) != 0;
#else
CV_LOG_INFO(NULL, "cpufeatures library is not available for CPU detection");
#if CV_NEON
CV_LOG_INFO(NULL, "- NEON instructions is enabled via build flags");
have[CV_CPU_NEON] = true;
#else
CV_LOG_INFO(NULL, "- NEON instructions is NOT enabled via build flags");
#endif
#if CV_FP16
CV_LOG_INFO(NULL, "- FP16 instructions is enabled via build flags");
have[CV_CPU_FP16] = true;
#else
CV_LOG_INFO(NULL, "- FP16 instructions is NOT enabled via build flags");
#endif
#endif
#elif defined __arm__ && !defined __FreeBSD__
int cpufile = open("/proc/self/auxv", O_RDONLY);
if (cpufile >= 0)
{
Elf32_auxv_t auxv;
const size_t size_auxv_t = sizeof(auxv);
while ((size_t)read(cpufile, &auxv, size_auxv_t) == size_auxv_t)
{
if (auxv.a_type == AT_HWCAP)
{
have[CV_CPU_NEON] = (auxv.a_un.a_val & 4096) != 0;
have[CV_CPU_FP16] = (auxv.a_un.a_val & 2) != 0;
break;
}
}
close(cpufile);
}
#endif
#elif (defined __APPLE__)
#if (defined __ARM_NEON__ || (defined __ARM_NEON && defined __aarch64__))
have[CV_CPU_NEON] = true;
#endif
#if (defined __ARM_FP && (((__ARM_FP & 0x2) != 0) && defined __ARM_NEON__))
have[CV_CPU_FP16] = have[CV_CPU_NEON_FP16] = true;
#endif
// system.cpp may be compiled w/o special -march=armv8...+dotprod, -march=armv8...+bf16 etc.,
// so we check for the features in any case, no mater what are the compile flags.
// We check the real hardware capabilities here.
int has_feat_dotprod = 0;
size_t has_feat_dotprod_size = sizeof(has_feat_dotprod);
sysctlbyname("hw.optional.arm.FEAT_DotProd", &has_feat_dotprod, &has_feat_dotprod_size, NULL, 0);
if (has_feat_dotprod) {
have[CV_CPU_NEON_DOTPROD] = true;
}
int has_feat_bf16 = 0;
size_t has_feat_bf16_size = sizeof(has_feat_bf16);
sysctlbyname("hw.optional.arm.FEAT_BF16", &has_feat_bf16, &has_feat_bf16_size, NULL, 0);
if (has_feat_bf16) {
have[CV_CPU_NEON_BF16] = true;
}
#elif (defined __clang__)
#if (defined __ARM_NEON__ || (defined __ARM_NEON && defined __aarch64__))
have[CV_CPU_NEON] = true;
#if (defined __ARM_FP && ((__ARM_FP & 0x2) != 0))
have[CV_CPU_FP16] = true;
#endif
#endif
#endif
#if defined _ARM_ && (defined(_WIN32_WCE) && _WIN32_WCE >= 0x800)
have[CV_CPU_NEON] = true;
#endif
#if defined _M_ARM64
have[CV_CPU_NEON] = true;
#endif
#ifdef __riscv_vector
have[CV_CPU_RISCVV] = true;
#endif
#ifdef __mips_msa
have[CV_CPU_MSA] = true;
#endif
#if (defined __ppc64__ || defined __PPC64__) && defined __linux__
unsigned int hwcap = getauxval(AT_HWCAP);
if (hwcap & PPC_FEATURE_HAS_VSX) {
hwcap = getauxval(AT_HWCAP2);
if (hwcap & PPC_FEATURE2_ARCH_3_00) {
have[CV_CPU_VSX] = have[CV_CPU_VSX3] = true;
} else {
have[CV_CPU_VSX] = (hwcap & PPC_FEATURE2_ARCH_2_07) != 0;
}
}
#elif (defined __ppc64__ || defined __PPC64__) && defined __FreeBSD__
unsigned long hwcap = 0;
elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap));
if (hwcap & PPC_FEATURE_HAS_VSX) {
elf_aux_info(AT_HWCAP2, &hwcap, sizeof(hwcap));
if (hwcap & PPC_FEATURE2_ARCH_3_00) {
have[CV_CPU_VSX] = have[CV_CPU_VSX3] = true;
} else {
have[CV_CPU_VSX] = (hwcap & PPC_FEATURE2_ARCH_2_07) != 0;
}
}
#else
// TODO: AIX, OpenBSD
#if CV_VSX || defined _ARCH_PWR8 || defined __POWER9_VECTOR__
have[CV_CPU_VSX] = true;
#endif
#if CV_VSX3 || defined __POWER9_VECTOR__
have[CV_CPU_VSX3] = true;
#endif
#endif
#if defined __riscv && defined __riscv_vector
have[CV_CPU_RVV] = true;
#endif
#if defined __loongarch_sx
have[CV_CPU_LSX] = true;
#endif
#if defined __loongarch_asx
have[CV_CPU_LASX] = true;
#endif
bool skip_baseline_check = false;
#ifndef NO_GETENV
if (getenv("OPENCV_SKIP_CPU_BASELINE_CHECK"))
{
skip_baseline_check = true;
}
#endif
int baseline_features[] = { CV_CPU_BASELINE_FEATURES };
if (!checkFeatures(baseline_features, sizeof(baseline_features) / sizeof(baseline_features[0]))
&& !skip_baseline_check)
{
fprintf(stderr, "\n"
"******************************************************************\n"
"* FATAL ERROR: *\n"
"* This OpenCV build doesn't support current CPU/HW configuration *\n"
"* *\n"
"* Use OPENCV_DUMP_CONFIG=1 environment variable for details *\n"
"******************************************************************\n");
fprintf(stderr, "\nRequired baseline features:\n");
checkFeatures(baseline_features, sizeof(baseline_features) / sizeof(baseline_features[0]), true);
CV_Error(cv::Error::StsAssert, "Missing support for required CPU baseline features. Check OpenCV build configuration and required CPU/HW setup.");
}
readSettings(baseline_features, sizeof(baseline_features) / sizeof(baseline_features[0]));
}
bool checkFeatures(const int* features, int count, bool dump = false)
{
bool result = true;
for (int i = 0; i < count; i++)
{
int feature = features[i];
if (feature)
{
if (have[feature])
{
if (dump) fprintf(stderr, " ID=%3d (%s) - OK\n", feature, getHWFeatureNameSafe(feature));
}
else
{
result = false;
if (dump) fprintf(stderr, " ID=%3d (%s) - NOT AVAILABLE\n", feature, getHWFeatureNameSafe(feature));
}
}
}
return result;
}
static inline bool isSymbolSeparator(char c)
{
return c == ',' || c == ';';
}
void readSettings(const int* baseline_features, int baseline_count)
{
bool dump = true;
const char* disabled_features =
#ifdef NO_GETENV
NULL;
#else
getenv("OPENCV_CPU_DISABLE");
#endif
if (disabled_features && disabled_features[0] != 0)
{
const char* start = disabled_features;
for (;;)
{
while (start[0] != 0 && isSymbolSeparator(start[0]))
{
start++;
}
if (start[0] == 0)
break;
const char* end = start;
while (end[0] != 0 && !isSymbolSeparator(end[0]))
{
end++;
}
if (end == start)
continue;
cv::String feature(start, end);
start = end;
CV_Assert(feature.size() > 0);
bool found = false;
for (int i = 0; i < CV_HARDWARE_MAX_FEATURE; i++)
{
if (!g_hwFeatureNames[i]) continue;
size_t len = strlen(g_hwFeatureNames[i]);
if (len != feature.size()) continue;
if (feature.compare(g_hwFeatureNames[i]) == 0)
{
bool isBaseline = false;
for (int k = 0; k < baseline_count; k++)
{
if (baseline_features[k] == i)
{
isBaseline = true;
break;
}
}
if (isBaseline)
{
if (dump) fprintf(stderr, "OPENCV: Trying to disable baseline CPU feature: '%s'."
"This has very limited effect, because code optimizations for this feature are executed unconditionally "
"in the most cases.\n", getHWFeatureNameSafe(i));
}
if (!have[i])
{
if (dump) fprintf(stderr, "OPENCV: Trying to disable unavailable CPU feature on the current platform: '%s'.\n",
getHWFeatureNameSafe(i));
}
have[i] = false;
found = true;
break;
}
}
if (!found)
{
if (dump) fprintf(stderr, "OPENCV: Trying to disable unknown CPU feature: '%s'.\n", feature.c_str());
}
}
}
}
bool have[MAX_FEATURE+1]{};
};
static HWFeatures featuresEnabled(true), featuresDisabled = HWFeatures(false);
static HWFeatures* currentFeatures = &featuresEnabled;
bool checkHardwareSupport(int feature)
{
CV_DbgAssert( 0 <= feature && feature <= CV_HARDWARE_MAX_FEATURE );
return currentFeatures->have[feature];
}
String getHardwareFeatureName(int feature)
{
const char* name = getHWFeatureName(feature);
return name ? String(name) : String();
}
std::string getCPUFeaturesLine()
{
const int features[] = { CV_CPU_BASELINE_FEATURES, CV_CPU_DISPATCH_FEATURES };
const int sz = sizeof(features) / sizeof(features[0]);
std::string result;
std::string prefix;
for (int i = 1; i < sz; ++i)
{
if (features[i] == 0)
{
prefix = "*";
continue;
}
if (i != 1) result.append(" ");
result.append(prefix);
result.append(getHWFeatureNameSafe(features[i]));
if (!checkHardwareSupport(features[i])) result.append("?");
}
return result;
}
volatile bool useOptimizedFlag = true;
void setUseOptimized( bool flag )
{
useOptimizedFlag = flag;
currentFeatures = flag ? &featuresEnabled : &featuresDisabled;
ipp::setUseIPP(flag);
#ifdef HAVE_OPENCL
ocl::setUseOpenCL(flag);
#endif
}
bool useOptimized(void)
{
return useOptimizedFlag;
}
int64 getTickCount(void)
{
#if defined CV_CXX11
std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
return (int64)now.time_since_epoch().count();
#elif defined _WIN32 || defined WINCE
LARGE_INTEGER counter;
QueryPerformanceCounter( &counter );
return (int64)counter.QuadPart;
#elif defined __MACH__ && defined __APPLE__
return (int64)mach_absolute_time();
#elif defined __unix__
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
return (int64)tp.tv_sec*1000000000 + tp.tv_nsec;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return (int64)tv.tv_sec*1000000 + tv.tv_usec;
#endif
}
double getTickFrequency(void)
{
#if defined CV_CXX11
using clock_period_t = std::chrono::steady_clock::duration::period;
double clock_freq = clock_period_t::den / clock_period_t::num;
return clock_freq;
#elif defined _WIN32 || defined WINCE
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
return (double)freq.QuadPart;
#elif defined __MACH__ && defined __APPLE__
static double freq = 0;
if( freq == 0 )
{
mach_timebase_info_data_t sTimebaseInfo;
mach_timebase_info(&sTimebaseInfo);
freq = sTimebaseInfo.denom*1e9/sTimebaseInfo.numer;
}
return freq;
#elif defined __unix__
return 1e9;
#else
return 1e6;
#endif
}
#if defined __GNUC__ && (defined __i386__ || defined __x86_64__ || defined __ppc__)
#if defined(__i386__)
int64 getCPUTickCount(void)
{
int64 x;
__asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
return x;
}
#elif defined(__x86_64__)
int64 getCPUTickCount(void)
{
unsigned hi, lo;
__asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
return (int64)lo | ((int64)hi << 32);
}
#elif defined(__ppc__)
int64 getCPUTickCount(void)
{
unsigned upper, lower, tmp;
__asm__ volatile(
"0: \n"
"\tmftbu %0 \n"
"\tmftb %1 \n"
"\tmftbu %2 \n"
"\tcmpw %2,%0 \n"
"\tbne 0b \n"
: "=r"(upper),"=r"(lower),"=r"(tmp)
);
return lower | ((int64)upper << 32);
}
#else
#error "RDTSC not defined"
#endif
#elif defined _MSC_VER && defined _WIN32 && defined _M_IX86
int64 getCPUTickCount(void)
{
__asm _emit 0x0f;
__asm _emit 0x31;
}
#else
//#ifdef HAVE_IPP
//int64 getCPUTickCount(void)
//{