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memory.c
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/*****************************************************************************
Copyright (c) 2011-2014, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the OpenBLAS project 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 OWNER 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.
**********************************************************************************/
/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. 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. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``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 UNIVERSITY OF TEXAS AT */
/* AUSTIN 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. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
//#undef DEBUG
#include "common.h"
#if defined(USE_TLS) && defined(SMP)
#define COMPILE_TLS
#if USE_TLS != 1
#undef COMPILE_TLS
#endif
#if defined(__GLIBC_PREREQ)
#if !__GLIBC_PREREQ(2,20)
#undef COMPILE_TLS
#endif
#endif
#endif
#if defined(COMPILE_TLS)
#include <errno.h>
#if defined(OS_WINDOWS) && !defined(OS_CYGWIN_NT)
#define ALLOC_WINDOWS
#ifndef MEM_LARGE_PAGES
#define MEM_LARGE_PAGES 0x20000000
#endif
#else
#define ALLOC_MMAP
#define ALLOC_MALLOC
#endif
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#if !defined(OS_WINDOWS) || defined(OS_CYGWIN_NT)
#include <sys/mman.h>
#ifndef NO_SYSV_IPC
#include <sys/shm.h>
#endif
#include <sys/ipc.h>
#endif
#include <sys/types.h>
#ifdef OS_LINUX
#include <sys/sysinfo.h>
#include <sched.h>
#include <errno.h>
#include <linux/unistd.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif
#ifdef OS_HAIKU
#include <unistd.h>
#endif
#if defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN)
#include <sys/sysctl.h>
#include <sys/resource.h>
#endif
#if defined(OS_WINDOWS) && (defined(__MINGW32__) || defined(__MINGW64__))
#include <conio.h>
#undef printf
#define printf _cprintf
#endif
#ifdef OS_LINUX
#ifndef MPOL_PREFERRED
#define MPOL_PREFERRED 1
#endif
#endif
#if (defined(PPC440) || !defined(OS_LINUX) || defined(HPL)) && !defined(NO_WARMUP)
#define NO_WARMUP
#endif
#ifndef SHM_HUGETLB
#define SHM_HUGETLB 04000
#endif
#ifndef FIXED_PAGESIZE
#define FIXED_PAGESIZE 4096
#endif
#define BITMASK(a, b, c) ((((a) >> (b)) & (c)))
#if defined(_MSC_VER) && !defined(__clang__)
#define CONSTRUCTOR __cdecl
#define DESTRUCTOR __cdecl
#elif (defined(OS_DARWIN) || defined(OS_SUNOS)) && defined(C_GCC)
#define CONSTRUCTOR __attribute__ ((constructor))
#define DESTRUCTOR __attribute__ ((destructor))
#elif __GNUC__ && INIT_PRIORITY && ((GCC_VERSION >= 40300) || (CLANG_VERSION >= 20900))
#define CONSTRUCTOR __attribute__ ((constructor(101)))
#define DESTRUCTOR __attribute__ ((destructor(101)))
#else
#define CONSTRUCTOR __attribute__ ((constructor))
#define DESTRUCTOR __attribute__ ((destructor))
#endif
#ifdef DYNAMIC_ARCH
gotoblas_t *gotoblas = NULL;
#endif
extern void openblas_warning(int verbose, const char * msg);
#ifndef SMP
#define blas_cpu_number 1
#define blas_num_threads 1
/* Dummy Function */
int goto_get_num_procs (void) { return 1;};
void goto_set_num_threads(int num_threads) {};
#else
#if defined(OS_LINUX) || defined(OS_SUNOS)
#ifndef NO_AFFINITY
int get_num_procs(void);
#else
int get_num_procs(void) {
static int nums = 0;
cpu_set_t cpuset,*cpusetp;
size_t size;
int ret;
#if defined(__GLIBC_PREREQ)
#if !__GLIBC_PREREQ(2, 7)
int i;
#if !__GLIBC_PREREQ(2, 6)
int n;
#endif
#endif
#endif
if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
#if !defined(OS_LINUX)
return nums;
#endif
#if !defined(__GLIBC_PREREQ)
return nums;
#else
#if !__GLIBC_PREREQ(2, 3)
return nums;
#endif
#if !__GLIBC_PREREQ(2, 7)
ret = sched_getaffinity(0,sizeof(cpuset), &cpuset);
if (ret!=0) return nums;
n=0;
#if !__GLIBC_PREREQ(2, 6)
for (i=0;i<nums;i++)
if (CPU_ISSET(i,&cpuset)) n++;
nums=n;
#else
nums = CPU_COUNT(sizeof(cpuset),&cpuset);
#endif
return nums;
#else
if (nums >= CPU_SETSIZE) {
cpusetp = CPU_ALLOC(nums);
if (cpusetp == NULL) {
return nums;
}
size = CPU_ALLOC_SIZE(nums);
ret = sched_getaffinity(0,size,cpusetp);
if (ret!=0) {
CPU_FREE(cpusetp);
return nums;
}
ret = CPU_COUNT_S(size,cpusetp);
if (ret > 0 && ret < nums) nums = ret;
CPU_FREE(cpusetp);
return nums;
} else {
ret = sched_getaffinity(0,sizeof(cpuset),&cpuset);
if (ret!=0) {
return nums;
}
ret = CPU_COUNT(&cpuset);
if (ret > 0 && ret < nums) nums = ret;
return nums;
}
#endif
#endif
}
#endif
#endif
#ifdef OS_ANDROID
int get_num_procs(void) {
static int nums = 0;
if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
return nums;
}
#endif
#ifdef OS_HAIKU
int get_num_procs(void) {
static int nums = 0;
if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
return nums;
}
#endif
#ifdef OS_AIX
int get_num_procs(void) {
static int nums = 0;
if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
return nums;
}
#endif
#ifdef OS_WINDOWS
int get_num_procs(void) {
static int nums = 0;
if (nums == 0) {
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
nums = sysinfo.dwNumberOfProcessors;
}
return nums;
}
#endif
#if defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY)
int get_num_procs(void) {
static int nums = 0;
int m[2];
size_t len;
if (nums == 0) {
m[0] = CTL_HW;
m[1] = HW_NCPU;
len = sizeof(int);
sysctl(m, 2, &nums, &len, NULL, 0);
}
return nums;
}
#endif
#if defined(OS_DARWIN)
int get_num_procs(void) {
static int nums = 0;
size_t len;
if (nums == 0){
len = sizeof(int);
sysctlbyname("hw.physicalcpu", &nums, &len, NULL, 0);
}
return nums;
}
/*
void set_stack_limit(int limitMB){
int result=0;
struct rlimit rl;
rlim_t StackSize;
StackSize=limitMB*1024*1024;
result=getrlimit(RLIMIT_STACK, &rl);
if(result==0){
if(rl.rlim_cur < StackSize){
rl.rlim_cur=StackSize;
result=setrlimit(RLIMIT_STACK, &rl);
if(result !=0){
fprintf(stderr, "OpenBLAS: set stack limit error =%d\n", result);
}
}
}
}
*/
#endif
/*
OpenBLAS uses the numbers of CPU cores in multithreading.
It can be set by openblas_set_num_threads(int num_threads);
*/
int blas_cpu_number = 0;
/*
The numbers of threads in the thread pool.
This value is equal or large than blas_cpu_number. This means some threads are sleep.
*/
int blas_num_threads = 0;
int goto_get_num_procs (void) {
return blas_cpu_number;
}
static void blas_memory_init();
void openblas_fork_handler()
{
// This handler shuts down the OpenBLAS-managed PTHREAD pool when OpenBLAS is
// built with "make USE_OPENMP=0".
// Hanging can still happen when OpenBLAS is built against the libgomp
// implementation of OpenMP. The problem is tracked at:
// http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60035
// In the mean time build with USE_OPENMP=0 or link against another
// implementation of OpenMP.
#if !((defined(OS_WINDOWS) && !defined(OS_CYGWIN_NT)) || defined(OS_ANDROID)) && defined(SMP_SERVER)
int err;
err = pthread_atfork ((void (*)(void)) BLASFUNC(blas_thread_shutdown), NULL, blas_memory_init);
if(err != 0)
openblas_warning(0, "OpenBLAS Warning ... cannot install fork handler. You may meet hang after fork.\n");
#endif
}
extern int openblas_num_threads_env();
extern int openblas_goto_num_threads_env();
extern int openblas_omp_num_threads_env();
int blas_get_cpu_number(void){
#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
int max_num;
#endif
int blas_goto_num = 0;
int blas_omp_num = 0;
if (blas_num_threads) return blas_num_threads;
#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
max_num = get_num_procs();
#endif
// blas_goto_num = 0;
#ifndef USE_OPENMP_UNUSED
blas_goto_num=openblas_num_threads_env();
if (blas_goto_num < 0) blas_goto_num = 0;
if (blas_goto_num == 0) {
blas_goto_num=openblas_goto_num_threads_env();
if (blas_goto_num < 0) blas_goto_num = 0;
}
#endif
// blas_omp_num = 0;
blas_omp_num=openblas_omp_num_threads_env();
if (blas_omp_num < 0) blas_omp_num = 0;
if (blas_goto_num > 0) blas_num_threads = blas_goto_num;
else if (blas_omp_num > 0) blas_num_threads = blas_omp_num;
else blas_num_threads = MAX_CPU_NUMBER;
#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
if (blas_num_threads > max_num) blas_num_threads = max_num;
#endif
if (blas_num_threads > MAX_CPU_NUMBER) blas_num_threads = MAX_CPU_NUMBER;
#ifdef DEBUG
printf( "Adjusted number of threads : %3d\n", blas_num_threads);
#endif
blas_cpu_number = blas_num_threads;
return blas_num_threads;
}
#endif
int openblas_get_num_procs(void) {
#ifndef SMP
return 1;
#else
return get_num_procs();
#endif
}
int openblas_get_num_threads(void) {
#ifndef SMP
return 1;
#else
// init blas_cpu_number if needed
blas_get_cpu_number();
return blas_cpu_number;
#endif
}
int hugetlb_allocated = 0;
#if defined(OS_WINDOWS)
#define LIKELY_ONE(x) (x)
#else
#define LIKELY_ONE(x) (__builtin_expect(x, 1))
#endif
/* Stores information about the allocation and how to release it */
struct alloc_t {
/* Whether this allocation is being used */
int used;
/* Any special attributes needed when releasing this allocation */
int attr;
/* Function that can properly release this memory */
void (*release_func)(struct alloc_t *);
/* Pad to 64-byte alignment */
char pad[64 - 2 * sizeof(int) - sizeof(void(*))];
};
/* Convenience macros for storing release funcs */
#define STORE_RELEASE_FUNC(address, func) \
if (address != (void *)-1) { \
struct alloc_t *alloc_info = (struct alloc_t *)address; \
alloc_info->release_func = func; \
}
#define STORE_RELEASE_FUNC_WITH_ATTR(address, func, attr) \
if (address != (void *)-1) { \
struct alloc_t *alloc_info = (struct alloc_t *)address; \
alloc_info->release_func = func; \
alloc_info->attr = attr; \
}
/* The number of bytes that will be allocated for each buffer. When allocating
memory, we store an alloc_t followed by the actual buffer memory. This means
that each allocation always has its associated alloc_t, without the need
for an auxiliary tracking structure. */
static const int allocation_block_size = BUFFER_SIZE + sizeof(struct alloc_t);
#if defined(SMP)
# if defined(OS_WINDOWS)
static DWORD local_storage_key = 0;
DWORD lsk;
# else
static pthread_key_t local_storage_key = 0;
pthread_key_t lsk;
# endif /* defined(OS_WINDOWS) */
#endif /* defined(SMP) */
#if defined(OS_LINUX) && !defined(NO_WARMUP)
static int hot_alloc = 0;
#endif
/* Global lock for memory allocation */
#if defined(USE_PTHREAD_LOCK)
static pthread_mutex_t alloc_lock = PTHREAD_MUTEX_INITIALIZER;
#elif defined(USE_PTHREAD_SPINLOCK)
static pthread_spinlock_t alloc_lock = 0;
#else
static BLASULONG alloc_lock = 0UL;
#endif
#if defined(USE_PTHREAD_LOCK)
static pthread_mutex_t key_lock = PTHREAD_MUTEX_INITIALIZER;
#elif defined(USE_PTHREAD_SPINLOCK)
static pthread_spinlock_t key_lock = 0;
#else
static BLASULONG key_lock = 0UL;
#endif
/* Returns a pointer to the start of the per-thread memory allocation data */
static __inline struct alloc_t ** get_memory_table() {
#if defined(SMP)
LOCK_COMMAND(&key_lock);
lsk=local_storage_key;
UNLOCK_COMMAND(&key_lock);
if (!lsk) {
blas_memory_init();
}
# if defined(OS_WINDOWS)
struct alloc_t ** local_memory_table = (struct alloc_t **)TlsGetValue(local_storage_key);
# else
struct alloc_t ** local_memory_table = (struct alloc_t **)pthread_getspecific(local_storage_key);
# endif /* defined(OS_WINDOWS) */
#else
static struct alloc_t ** local_memory_table = NULL;
#endif /* defined(SMP) */
#if defined (SMP)
LOCK_COMMAND(&key_lock);
lsk=local_storage_key;
UNLOCK_COMMAND(&key_lock);
if (lsk && !local_memory_table) {
#else
if (!local_memory_table) {
#endif /* defined(SMP) */
local_memory_table = (struct alloc_t **)malloc(sizeof(struct alloc_t *) * NUM_BUFFERS);
memset(local_memory_table, 0, sizeof(struct alloc_t *) * NUM_BUFFERS);
#if defined(SMP)
# if defined(OS_WINDOWS)
LOCK_COMMAND(&key_lock);
TlsSetValue(local_storage_key, (void*)local_memory_table);
UNLOCK_COMMAND(&key_lock);
# else
LOCK_COMMAND(&key_lock);
pthread_setspecific(local_storage_key, (void*)local_memory_table);
UNLOCK_COMMAND(&key_lock);
# endif /* defined(OS_WINDOWS) */
#endif /* defined(SMP) */
}
return local_memory_table;
}
#ifdef ALLOC_MMAP
static void alloc_mmap_free(struct alloc_t *alloc_info){
if (munmap(alloc_info, allocation_block_size)) {
printf("OpenBLAS : munmap failed\n");
}
}
#ifdef NO_WARMUP
static void *alloc_mmap(void *address){
void *map_address;
if (address){
map_address = mmap(address,
allocation_block_size,
MMAP_ACCESS, MMAP_POLICY | MAP_FIXED, -1, 0);
} else {
map_address = mmap(address,
allocation_block_size,
MMAP_ACCESS, MMAP_POLICY, -1, 0);
}
STORE_RELEASE_FUNC(map_address, alloc_mmap_free);
#ifdef OS_LINUX
my_mbind(map_address, allocation_block_size, MPOL_PREFERRED, NULL, 0, 0);
#endif
return map_address;
}
#else
#define BENCH_ITERATION 4
#define SCALING 2
static inline BLASULONG run_bench(BLASULONG address, BLASULONG size) {
BLASULONG original, *p;
BLASULONG start, stop, min;
int iter, i, count;
min = (BLASULONG)-1;
original = *(BLASULONG *)(address + size - PAGESIZE);
*(BLASULONG *)(address + size - PAGESIZE) = (BLASULONG)address;
for (iter = 0; iter < BENCH_ITERATION; iter ++ ) {
p = (BLASULONG *)address;
count = size / PAGESIZE;
start = rpcc();
for (i = 0; i < count; i ++) {
p = (BLASULONG *)(*p);
}
stop = rpcc();
if (min > stop - start) min = stop - start;
}
*(BLASULONG *)(address + size - PAGESIZE + 0) = original;
*(BLASULONG *)(address + size - PAGESIZE + 8) = (BLASULONG)p;
return min;
}
static void *alloc_mmap(void *address){
void *map_address, *best_address;
BLASULONG best, start, current, original;
BLASULONG allocsize;
if (address){
/* Just give up use advanced operation */
map_address = mmap(address, allocation_block_size, MMAP_ACCESS, MMAP_POLICY | MAP_FIXED, -1, 0);
#ifdef OS_LINUX
my_mbind(map_address, allocation_block_size, MPOL_PREFERRED, NULL, 0, 0);
#endif
} else {
#if defined(OS_LINUX) && !defined(NO_WARMUP)
if (hot_alloc == 0) {
map_address = mmap(NULL, allocation_block_size, MMAP_ACCESS, MMAP_POLICY, -1, 0);
#ifdef OS_LINUX
my_mbind(map_address, allocation_block_size, MPOL_PREFERRED, NULL, 0, 0);
#endif
} else {
#endif
map_address = mmap(NULL, allocation_block_size * SCALING,
MMAP_ACCESS, MMAP_POLICY, -1, 0);
if (map_address != (void *)-1) {
#ifdef OS_LINUX
#ifdef DEBUG
int ret=0;
ret=my_mbind(map_address, allocation_block_size * SCALING, MPOL_PREFERRED, NULL, 0, 0);
if(ret==-1){
int errsv=errno;
perror("OpenBLAS alloc_mmap:");
printf("error code=%d,\tmap_address=%lx\n",errsv,map_address);
}
#else
my_mbind(map_address, allocation_block_size * SCALING, MPOL_PREFERRED, NULL, 0, 0);
#endif
#endif
allocsize = DGEMM_P * DGEMM_Q * sizeof(double);
start = (BLASULONG)map_address;
current = (SCALING - 1) * allocation_block_size;
original = current;
while(current > 0 && current <= original) {
*(BLASLONG *)start = (BLASLONG)start + PAGESIZE;
start += PAGESIZE;
current -= PAGESIZE;
}
*(BLASLONG *)(start - PAGESIZE) = (BLASULONG)map_address;
start = (BLASULONG)map_address;
best = (BLASULONG)-1;
best_address = map_address;
while ((start + allocsize < (BLASULONG)map_address + (SCALING - 1) * allocation_block_size)) {
current = run_bench(start, allocsize);
if (best > current) {
best = current;
best_address = (void *)start;
}
start += PAGESIZE;
}
if ((BLASULONG)best_address > (BLASULONG)map_address)
munmap(map_address, (BLASULONG)best_address - (BLASULONG)map_address);
munmap((void *)((BLASULONG)best_address + allocation_block_size), (SCALING - 1) * allocation_block_size + (BLASULONG)map_address - (BLASULONG)best_address);
map_address = best_address;
#if defined(OS_LINUX) && !defined(NO_WARMUP)
hot_alloc = 2;
#endif
}
}
#if defined(OS_LINUX) && !defined(NO_WARMUP)
}
#endif
STORE_RELEASE_FUNC(map_address, alloc_mmap_free);
return map_address;
}
#endif
#endif
#ifdef ALLOC_MALLOC
static void alloc_malloc_free(struct alloc_t *alloc_info){
free(alloc_info);
}
static void *alloc_malloc(void *address){
void *map_address;
map_address = (void *)malloc(allocation_block_size + FIXED_PAGESIZE);
if (map_address == (void *)NULL) map_address = (void *)-1;
STORE_RELEASE_FUNC(map_address, alloc_malloc_free);
return map_address;
}
#endif
#ifdef ALLOC_QALLOC
void *qalloc(int flags, size_t bytes);
void *qfree (void *address);
#define QNONCACHE 0x1
#define QCOMMS 0x2
#define QFAST 0x4
static void alloc_qalloc_free(struct alloc_t *alloc_info){
qfree(alloc_info);
}
static void *alloc_qalloc(void *address){
void *map_address;
map_address = (void *)qalloc(QCOMMS | QFAST, allocation_block_size + FIXED_PAGESIZE);
if (map_address == (void *)NULL) map_address = (void *)-1;
STORE_RELEASE_FUNC(map_address, alloc_qalloc_free);
return (void *)(((BLASULONG)map_address + FIXED_PAGESIZE - 1) & ~(FIXED_PAGESIZE - 1));
}
#endif
#ifdef ALLOC_WINDOWS
static void alloc_windows_free(struct alloc_t *alloc_info){
VirtualFree(alloc_info, allocation_block_size, MEM_DECOMMIT);
}
static void *alloc_windows(void *address){
void *map_address;
map_address = VirtualAlloc(address,
allocation_block_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_READWRITE);
if (map_address == (void *)NULL) map_address = (void *)-1;
STORE_RELEASE_FUNC(map_address, alloc_windows_free);
return map_address;
}
#endif
#ifdef ALLOC_DEVICEDRIVER
#ifndef DEVICEDRIVER_NAME
#define DEVICEDRIVER_NAME "/dev/mapper"
#endif
static void alloc_devicedirver_free(struct alloc_t *alloc_info){
int attr = alloc_info -> attr;
if (munmap(address, allocation_block_size)) {
printf("OpenBLAS : Bugphysarea unmap failed.\n");
}
if (close(attr)) {
printf("OpenBLAS : Bugphysarea close failed.\n");
}
}
static void *alloc_devicedirver(void *address){
int fd;
void *map_address;
if ((fd = open(DEVICEDRIVER_NAME, O_RDWR | O_SYNC)) < 0) {
return (void *)-1;
}
map_address = mmap(address, allocation_block_size,
PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED,
fd, 0);
STORE_RELEASE_FUNC_WITH_ATTR(map_address, alloc_devicedirver_free, fd);
return map_address;
}
#endif
#ifdef ALLOC_SHM
static void alloc_shm_free(struct alloc_t *alloc_info){
if (shmdt(alloc_info)) {
printf("OpenBLAS : Shared memory unmap failed.\n");
}
}
static void *alloc_shm(void *address){
void *map_address;
int shmid;
shmid = shmget(IPC_PRIVATE, allocation_block_size,IPC_CREAT | 0600);
map_address = (void *)shmat(shmid, address, 0);
if (map_address != (void *)-1){
#ifdef OS_LINUX
my_mbind(map_address, allocation_block_size, MPOL_PREFERRED, NULL, 0, 0);
#endif
shmctl(shmid, IPC_RMID, 0);
struct alloc_t *alloc_info = (struct alloc_t *)map_address;
alloc_info->release_func = alloc_shm_free;
alloc_info->attr = shmid;
}
return map_address;
}
#if defined OS_LINUX || defined OS_AIX || defined __sun__ || defined OS_WINDOWS
static void alloc_hugetlb_free(struct alloc_t *alloc_info){
#if defined(OS_LINUX) || defined(OS_AIX)
if (shmdt(alloc_info)) {
printf("OpenBLAS : Hugepage unmap failed.\n");
}
#endif
#ifdef __sun__
munmap(alloc_info, allocation_block_size);
#endif
#ifdef OS_WINDOWS
VirtualFree(alloc_info, allocation_block_size, MEM_LARGE_PAGES | MEM_DECOMMIT);
#endif
}
static void *alloc_hugetlb(void *address){
void *map_address = (void *)-1;
#if defined(OS_LINUX) || defined(OS_AIX)
int shmid;
shmid = shmget(IPC_PRIVATE, allocation_block_size,
#ifdef OS_LINUX
SHM_HUGETLB |
#endif
#ifdef OS_AIX
SHM_LGPAGE | SHM_PIN |
#endif
IPC_CREAT | SHM_R | SHM_W);
if (shmid != -1) {
map_address = (void *)shmat(shmid, address, SHM_RND);
#ifdef OS_LINUX
my_mbind(map_address, allocation_block_size, MPOL_PREFERRED, NULL, 0, 0);
#endif
if (map_address != (void *)-1){
shmctl(shmid, IPC_RMID, 0);
}
}
#endif
#ifdef __sun__
struct memcntl_mha mha;
mha.mha_cmd = MHA_MAPSIZE_BSSBRK;
mha.mha_flags = 0;
mha.mha_pagesize = HUGE_PAGESIZE;
memcntl(NULL, 0, MC_HAT_ADVISE, (char *)&mha, 0, 0);
map_address = (BLASULONG)memalign(HUGE_PAGESIZE, allocation_block_size);
#endif
#ifdef OS_WINDOWS
HANDLE hToken;
TOKEN_PRIVILEGES tp;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken) != TRUE) return (void *) -1;
tp.PrivilegeCount = 1;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (LookupPrivilegeValue(NULL, SE_LOCK_MEMORY_NAME, &tp.Privileges[0].Luid) != TRUE) {
CloseHandle(hToken);
return (void*)-1;
}
if (AdjustTokenPrivileges(hToken, FALSE, &tp, 0, NULL, NULL) != TRUE) {
CloseHandle(hToken);