cosmopolitan/third_party/dlmalloc/dlmalloc-usable.c

#include "libc/mem/mem.h"
#include "third_party/dlmalloc/dlmalloc.internal.h"

size_t dlmalloc_usable_size(const void* mem) {
  if (mem != 0) {
    mchunkptr p = mem2chunk(mem);
    if (is_inuse(p)) return chunksize(p) - overhead_for(p);
  }
  return 0;
}
Initial import 2020-06-15 14:18:57 +00:00			`#include "libc/mem/mem.h"`
Get Cosmopolitan into releasable state A new rollup tool now exists for flattening out the headers in a way that works better for our purposes than cpp. A lot of the API clutter has been removed. APIs that aren't a sure thing in terms of general recommendation are now marked internal. There's now a smoke test for the amalgamation archive and gigantic header file. So we can now guarantee you can use this project on the easiest difficulty setting without the gigantic repository. A website is being created, which is currently a work in progress: https://justine.storage.googleapis.com/cosmopolitan/index.html 2020-11-25 16:19:00 +00:00			`#include "third_party/dlmalloc/dlmalloc.internal.h"`
Initial import 2020-06-15 14:18:57 +00:00
			`size_t dlmalloc_usable_size(const void* mem) {`
			`if (mem != 0) {`
			`mchunkptr p = mem2chunk(mem);`
			`if (is_inuse(p)) return chunksize(p) - overhead_for(p);`
			`}`
			`return 0;`
			`}`