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Add locks only for non-OPENMP multithreading 

to migitate performance problems caused by #1052 and #1299 as seen in #1461
This commit is contained in:
Martin Kroeker 2018-02-20 12:17:18 +01:00 committed by GitHub
parent 6940c59a88
commit 3119b2ab4c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 40 additions and 8 deletions
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48
driver/others/memory.c
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@ -455,11 +455,15 @@ static void *alloc_mmap(void *address){
}
if (map_address != (void *)-1) {
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
release_info[release_pos].address = map_address;
release_info[release_pos].func = alloc_mmap_free;
release_pos ++;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
}
#ifdef OS_LINUX
@ -601,14 +605,18 @@ static void *alloc_mmap(void *address){
#if defined(OS_LINUX) && !defined(NO_WARMUP)
}
#endif
LOCK_COMMAND(&alloc_lock);
if (map_address != (void *)-1) {
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
release_info[release_pos].address = map_address;
release_info[release_pos].func = alloc_mmap_free;
release_pos ++;
}
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
}
return map_address;
}
@ -1007,7 +1015,10 @@ void *blas_memory_alloc(int procpos){
NULL,
};
void *(**func)(void *address);
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
if (!memory_initialized) {
@ -1041,7 +1052,9 @@ void *blas_memory_alloc(int procpos){
memory_initialized = 1;
}
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
#ifdef DEBUG
printf("Alloc Start ...\n");
@ -1056,12 +1069,15 @@ void *blas_memory_alloc(int procpos){
do {
if (!memory[position].used && (memory[position].pos == mypos)) {
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
/* blas_lock(&memory[position].lock);*/
if (!memory[position].used) goto allocation;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
/* blas_unlock(&memory[position].lock);*/
}
@ -1076,12 +1092,15 @@ void *blas_memory_alloc(int procpos){
do {
/* if (!memory[position].used) { */
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
/* blas_lock(&memory[position].lock);*/
if (!memory[position].used) goto allocation;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
/* blas_unlock(&memory[position].lock);*/
/* } */
@ -1098,8 +1117,10 @@ void *blas_memory_alloc(int procpos){
#endif
memory[position].used = 1;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
/* blas_unlock(&memory[position].lock);*/
if (!memory[position].addr) {
@ -1146,9 +1167,13 @@ void *blas_memory_alloc(int procpos){
} while ((BLASLONG)map_address == -1);
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
memory[position].addr = map_address;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
#ifdef DEBUG
printf(" Mapping Succeeded. %p(%d)\n", (void *)memory[position].addr, position);
@ -1165,7 +1190,9 @@ void *blas_memory_alloc(int procpos){
if (memory_initialized == 1) {
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
if (memory_initialized == 1) {
@ -1174,8 +1201,9 @@ void *blas_memory_alloc(int procpos){
memory_initialized = 2;
}
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
}
#endif
@ -1202,8 +1230,9 @@ void blas_memory_free(void *free_area){
#endif
position = 0;
#if defined(SMP) && !defined(USE_OPENMP)
LOCK_COMMAND(&alloc_lock);
#endif
while ((position < NUM_BUFFERS) && (memory[position].addr != free_area))
position++;
@ -1217,7 +1246,9 @@ void blas_memory_free(void *free_area){
WMB;
memory[position].used = 0;
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
#ifdef DEBUG
printf("Unmap Succeeded.\n\n");
@ -1232,8 +1263,9 @@ void blas_memory_free(void *free_area){
for (position = 0; position < NUM_BUFFERS; position++)
printf("%4ld %p : %d\n", position, memory[position].addr, memory[position].used);
#endif
#if defined(SMP) && !defined(USE_OPENMP)
UNLOCK_COMMAND(&alloc_lock);
#endif
return;
}