mirror of
https://github.com/amd/blis.git
synced 2026-05-12 10:05:38 +00:00
9bb23e6c2a
Details: - Added a configure option, --[enable|disable]-system, which determines whether the modest operating system dependencies in BLIS are included. The most notable example of this on Linux and BSD/OSX is the use of POSIX threads to ensure thread safety for when application-level threads call BLIS. When --disable-system is given, the bli_pthreads implementation is dummied out entirely, allowing the calling code within BLIS to remain unchanged. Why would anyone want to build BLIS like this? The motivating example was submitted via #454 in which a user wanted to build BLIS for a simulator such as gem5 where thread safety may not be a concern (and where the operating system is largely absent anyway). Thanks to Stepan Nassyr for suggesting this feature. - Another, more minor side effect of the --disable-system option is that the implementation of bli_clock() unconditionally returns 0.0 instead of the time elapsed since some fixed point in the past. The reasoning for this is that if the operating system is truly minimal, the system function call upon which bli_clock() would normally be implemented (e.g. clock_gettime()) may not be available. - Refactored preprocess-guarded code in bli_pthread.c and bli_pthread.h to remove redundancies. - Removed old comments and commented #include of "bli_pthread_wrap.h" from bli_system.h. - Documented bli_clock() and bli_clock_min_diff() in BLISObjectAPI.md and BLISTypedAPI.md, with a note that both are non-functional when BLIS is configured with --disable-system.
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*
|
|
|
|
BLIS
|
|
An object-based framework for developing high-performance BLAS-like
|
|
libraries.
|
|
|
|
Copyright (C) 2014, The University of Texas at Austin
|
|
Copyright (C) 2018 - 2019, Advanced Micro Devices, Inc.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
- Redistributions 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.
|
|
- Neither the name(s) of the copyright holder(s) nor the names of its
|
|
contributors may 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 COPYRIGHT
|
|
HOLDER 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.
|
|
|
|
*/
|
|
|
|
#ifndef BLIS_SYSTEM_H
|
|
#define BLIS_SYSTEM_H
|
|
|
|
// NOTE: If not yet defined, we define _POSIX_C_SOURCE to make sure that
|
|
// various parts of POSIX are defined and made available.
|
|
#ifndef _POSIX_C_SOURCE
|
|
#define _POSIX_C_SOURCE 200809L
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <float.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
|
|
// Determine the compiler (hopefully) and define conveniently named macros
|
|
// accordingly.
|
|
#if defined(__ICC) || defined(__INTEL_COMPILER)
|
|
#define BLIS_ICC
|
|
#elif defined(__clang__)
|
|
#define BLIS_CLANG
|
|
#elif defined(__GNUC__)
|
|
#define BLIS_GCC
|
|
#endif
|
|
|
|
// Determine if we are on a 64-bit or 32-bit architecture.
|
|
#if defined(_M_X64) || defined(__x86_64) || defined(__aarch64__) || \
|
|
defined(_ARCH_PPC64) || defined(__s390x__) || defined(_LP64)
|
|
#define BLIS_ARCH_64
|
|
#else
|
|
#define BLIS_ARCH_32
|
|
#endif
|
|
|
|
// Determine the target operating system.
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
#define BLIS_OS_WINDOWS 1
|
|
#elif defined(__gnu_hurd__)
|
|
#define BLIS_OS_GNU 1
|
|
#elif defined(__APPLE__) || defined(__MACH__)
|
|
#define BLIS_OS_OSX 1
|
|
#elif defined(__ANDROID__)
|
|
#define BLIS_OS_ANDROID 1
|
|
#elif defined(__linux__)
|
|
#define BLIS_OS_LINUX 1
|
|
#elif defined(__bgq__)
|
|
#define BLIS_OS_BGQ 1
|
|
#elif defined(__bg__)
|
|
#define BLIS_OS_BGP 1
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \
|
|
defined(__bsdi__) || defined(__DragonFly__) || \
|
|
defined(__FreeBSD_kernel__) || defined(__HAIKU__)
|
|
#define BLIS_OS_BSD 1
|
|
#elif defined(EMSCRIPTEN)
|
|
#define BLIS_OS_EMSCRIPTEN
|
|
#else
|
|
#error "Cannot determine operating system"
|
|
#endif
|
|
|
|
// A few changes that may be necessary in Windows environments.
|
|
#if BLIS_OS_WINDOWS
|
|
|
|
// Include Windows header file.
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#define VC_EXTRALEAN
|
|
#include <windows.h>
|
|
|
|
#if !defined(__clang__) && !defined(__GNUC__)
|
|
// Undefine attribute specifiers in Windows.
|
|
#define __attribute__(x)
|
|
|
|
// Undefine restrict.
|
|
#define restrict
|
|
#endif
|
|
|
|
#endif
|
|
|
|
// time.h provides clock_gettime().
|
|
#if BLIS_OS_WINDOWS
|
|
#include <time.h>
|
|
#elif BLIS_OS_OSX
|
|
#include <mach/mach_time.h>
|
|
#else
|
|
//#include <sys/time.h>
|
|
|
|
#include <time.h>
|
|
#endif
|
|
|
|
|
|
#endif
|