auto res = allocs.insert(std::make_pair(loc, shared_data_t()));
auto data = res.first;
if (res.second) {
- // The insertion did not take place.
+ // The new element was inserted.
// Generate a shared memory name from the address of the shared_data:
char shmname[32]; // cannot be longer than PSHMNAMLEN = 31 on Mac OS X (shm_open raises ENAMETOOLONG otherwise)
snprintf(shmname, 31, "/shmalloc%p", &*data);
"stop_offset (%zu) should be lower than its successor start offset (%zu)", stop_offset, shared_block_offsets[2*i_block+2]);
size_t start_block_offset = ALIGN_UP(start_offset, smpi_shared_malloc_blocksize);
size_t stop_block_offset = ALIGN_DOWN(stop_offset, smpi_shared_malloc_blocksize);
- for (unsigned block_id=0, i = start_block_offset / smpi_shared_malloc_blocksize; i < stop_block_offset / smpi_shared_malloc_blocksize; block_id++, i++) {
- XBT_DEBUG("\t\tglobal shared allocation, mmap block offset %u", block_id);
- void* pos = (void*)((unsigned long)mem + i * smpi_shared_malloc_blocksize);
+ for (size_t offset = start_block_offset; offset < stop_block_offset; offset += smpi_shared_malloc_blocksize) {
+ XBT_DEBUG("\t\tglobal shared allocation, mmap block offset %zx", offset);
+ void* pos = (void*)((unsigned long)mem + offset);
void* res = mmap(pos, smpi_shared_malloc_blocksize, PROT_READ | PROT_WRITE, mmap_flag,
huge_fd, 0);
xbt_assert(res == pos, "Could not map folded virtual memory (%s). Do you perhaps need to increase the "