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https://github.com/jart/cosmopolitan.git
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ea0b5d9d1c
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
42 lines
1 KiB
C
42 lines
1 KiB
C
#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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#include "third_party/dlmalloc/dlmalloc.internal.h"
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void *dlrealloc(void *oldmem, size_t bytes) {
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void *mem = 0;
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if (oldmem == 0) {
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mem = dlmalloc(bytes);
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} else if (bytes >= MAX_REQUEST) {
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enomem();
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} else if (bytes == 0) {
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dlfree(oldmem);
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} else {
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size_t nb = request2size(bytes);
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mchunkptr oldp = mem2chunk(oldmem);
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#if !FOOTERS
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mstate m = g_dlmalloc;
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#else /* FOOTERS */
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mstate m = get_mstate_for(oldp);
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if (!ok_magic(m)) {
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USAGE_ERROR_ACTION(m, oldmem);
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return 0;
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}
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#endif /* FOOTERS */
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if (!PREACTION(m)) {
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mchunkptr newp = dlmalloc_try_realloc_chunk(m, oldp, nb, 1);
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POSTACTION(m);
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if (newp != 0) {
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check_inuse_chunk(m, newp);
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mem = chunk2mem(newp);
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} else {
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mem = dlmalloc(bytes);
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if (mem != 0) {
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size_t oc = chunksize(oldp) - overhead_for(oldp);
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memcpy(mem, oldmem, (oc < bytes) ? oc : bytes);
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dlfree(oldmem);
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}
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}
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}
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}
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return mem;
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}
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