#define ALIGN_UP(n, align) (((n) + (align)-1) & -(align))
#define ALIGN_DOWN(n, align) ((n) & -(align))
+/*
+ * Similar to smpi_shared_malloc, but only sharing the blocks described by shared_block_offsets.
+ * This array contains the offsets (in bytes) of the block to share.
+ * Even indices are the start offsets (included), odd indices are the stop offsets (excluded).
+ * For instance, if shared_block_offsets == {27, 42}, then the elements mem[27], mem[28], ..., mem[41] are shared. The others are not.
+ */
void* smpi_shared_malloc_partial(size_t size, size_t* shared_block_offsets, int nb_shared_blocks)
{
void *mem;
return mem;
}
-/*
- * When nb_shared_blocks == -1, default behavior of smpi_shared_malloc: everything is shared.
- * Otherwise, only the blocks described by shared_block_offsets are shared.
- * This array contains the offsets (in bytes) of the block to share.
- * Even indices are the start offsets (included), odd indices are the stop offsets (excluded).
- * For instance, if shared_block_offsets == {27, 42}, then the elements mem[27], mem[28], ..., mem[41] are shared. The others are not.
- */
-static void *smpi_shared_malloc_global(size_t size, const char *file, int line, size_t *shared_block_offsets=NULL, int nb_shared_blocks=-1) {
- size_t tmp_shared_block_offsets[2];
- if(nb_shared_blocks == -1) {
- nb_shared_blocks = 1;
- shared_block_offsets = tmp_shared_block_offsets;
- shared_block_offsets[0] = 0;
- shared_block_offsets[1] = size;
- }
- return smpi_shared_malloc_partial(size, shared_block_offsets, nb_shared_blocks);
-}
-
void *smpi_shared_malloc(size_t size, const char *file, int line) {
- void *mem;
if (size > 0 && smpi_cfg_shared_malloc == shmalloc_local) {
- mem = smpi_shared_malloc_local(size, file, line);
+ return smpi_shared_malloc_local(size, file, line);
} else if (smpi_cfg_shared_malloc == shmalloc_global) {
- mem = smpi_shared_malloc_global(size, file, line);
- } else {
- mem = xbt_malloc(size);
- XBT_DEBUG("Classic malloc %zu in %p", size, mem);
+ int nb_shared_blocks = 1;
+ size_t shared_block_offsets[2] = {0, size};
+ return smpi_shared_malloc_partial(size, shared_block_offsets, nb_shared_blocks);
}
- return mem;
+ XBT_DEBUG("Classic malloc %zu", size);
+ return xbt_malloc(size);
}
int smpi_is_shared(void* ptr, std::vector<std::pair<size_t, size_t>> &private_blocks, size_t *offset){