void* mem = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if(mem == MAP_FAILED) {
- xbt_die(
- "Failed to map fd %d with size %zu: %s\n"
- "If you are running a lot of ranks, you may be exceeding the amount of mappings allowed per process.\n"
- "On Linux systems, change this value with sudo sysctl -w vm.max_map_count=newvalue (default value: 65536)\n"
- "Please see http://simgrid.gforge.inria.fr/simgrid/latest/doc/html/options.html#options_virt for more info.",
- fd, size, strerror(errno));
+ xbt_die("Failed to map fd %d with size %zu: %s\n"
+ "If you are running a lot of ranks, you may be exceeding the amount of mappings allowed per process.\n"
+ "On Linux systems, change this value with sudo sysctl -w vm.max_map_count=newvalue (default value: 65536)\n"
+ "Please see "
+ "https://simgrid.org/doc/latest/Configuring_SimGrid.html#configuring-the-user-code-virtualization for more "
+ "information.",
+ fd, size, strerror(errno));
}
snprintf(loc, PTR_STRLEN, "%p", mem);
meta.size = size;
}
// Align functions, from http://stackoverflow.com/questions/4840410/how-to-align-a-pointer-in-c
-#define PAGE_SIZE 0x1000
#define ALIGN_UP(n, align) (((n) + (align)-1) & -(align))
#define ALIGN_DOWN(n, align) ((n) & -(align))
-#define HUGE_PAGE_SIZE 1<<21
+constexpr unsigned PAGE_SIZE = 0x1000;
+constexpr unsigned HUGE_PAGE_SIZE = 1U << 21;
/* 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.
close(data->fd);
allocs.erase(allocs.find(meta->second.data->first));
allocs_metadata.erase(ptr);
- XBT_DEBUG("Shared free - with removal - of %p", ptr);
+ XBT_DEBUG("Shared free - Local - with removal - of %p", ptr);
} else {
- XBT_DEBUG("Shared free - no removal - of %p, count = %d", ptr, data->count);
+ XBT_DEBUG("Shared free - Local - no removal - of %p, count = %d", ptr, data->count);
}
} else if (smpi_cfg_shared_malloc == SharedMallocType::GLOBAL) {
if(meta->second.data->second.count==0)
delete meta->second.data;
}
-
+ XBT_DEBUG("Shared free - Global - of %p", ptr);
munmap(ptr, meta->second.size);
} else {
XBT_DEBUG("Classic deallocation of %p", ptr);