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/*
* Copyright (c) 2013-2014 Mellanox Technologies, Inc.
* All rights reserved.
* Copyright (c) 2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2014 Intel, Inc. All rights reserved
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "oshmem_config.h"
#include "oshmem/util/oshmem_util.h"
#include "oshmem/mca/sshmem/sshmem.h"
#include "oshmem/mca/sshmem/base/base.h"
#include "oshmem/mca/memheap/memheap.h"
#include "oshmem/mca/memheap/base/base.h"
#include "ompi/util/timings.h"
#include "opal/util/minmax.h"
int mca_memheap_base_alloc_init(mca_memheap_map_t *map, size_t size, long hint,
char *timing_prefix)
{
int ret = OSHMEM_SUCCESS;
char * seg_filename = NULL;
OPAL_TIMING_ENV_INIT_PREFIX(timing_prefix, timing);
assert(map);
if (hint == 0) {
assert(HEAP_SEG_INDEX == map->n_segments);
} else {
assert(HEAP_SEG_INDEX < map->n_segments);
}
map_segment_t *s = mca_memheap_base_allocate_segment(map);
if (NULL == s) {
MEMHEAP_ERROR("failed to allocate segment");
return OSHMEM_ERR_OUT_OF_RESOURCE;
}
seg_filename = oshmem_get_unique_file_name(oshmem_my_proc_id());
OPAL_TIMING_ENV_NEXT(timing, "oshmem_get_unique_file_name()");
ret = mca_sshmem_segment_create(s, seg_filename, size, hint);
OPAL_TIMING_ENV_NEXT(timing, "mca_sshmem_segment_create()");
if (OSHMEM_SUCCESS == ret) {
map->n_segments++;
MEMHEAP_VERBOSE(1,
"Memheap alloc memory: %llu byte(s), %d segments by method: %d",
(unsigned long long)size, map->n_segments, s->type);
}
free(seg_filename);
OPAL_TIMING_ENV_NEXT(timing, "DONE");
return ret;
}
void mca_memheap_base_alloc_exit(mca_memheap_map_t *map)
{
int i;
if (!map) {
return;
}
for (i = 0; i < map->n_segments; ++i) {
map_segment_t *s = &map->mem_segs[i];
if (s->type != MAP_SEGMENT_STATIC) {
mca_sshmem_segment_detach(s, NULL);
mca_sshmem_unlink(s);
}
}
free(map->mem_segs);
map->n_segments = 0;
map->capacity = 0;
map->mem_segs = NULL;
}
int mca_memheap_alloc_with_hint(size_t size, long hint, void** ptr)
{
int i;
for (i = 0; i < mca_memheap_base_map.n_segments; i++) {
map_segment_t *s = &mca_memheap_base_map.mem_segs[i];
if (s->allocator && (hint & s->alloc_hints)) {
/* Do not fall back to default allocator since it will break the
* symmetry between PEs
*/
return s->allocator->sa_realloc(s, size, NULL, ptr);
}
}
return MCA_MEMHEAP_CALL(alloc(size, ptr));
}
map_segment_t *mca_memheap_base_allocate_segment(mca_memheap_map_t *map)
{
static int warned = 0;
map_segment_t *segments;
int capacity;
assert(map->n_segments <= map->capacity);
if (!warned && (map->n_segments > mca_memheap_num_segments_warn)) {
MEMHEAP_WARN("too many segments are registered: %d. This may cause "
"performance degradation. Pls try adding --mca "
"memheap_base_max_segments <NUMBER> to mpirun/oshrun "
"command line to suppress this message", map->n_segments);
warned = 1;
}
if (map->n_segments == map->capacity) {
capacity = opal_max(map->capacity * 2, 4);
segments = realloc(map->mem_segs, capacity * sizeof(*map->mem_segs));
if (segments == NULL) {
return NULL;
}
map->capacity = capacity;
map->mem_segs = segments;
}
return &map->mem_segs[map->n_segments];
}
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