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Make dlmalloc a little faster

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This change also documents the libc arena allocator.
This commit is contained in:
Justine Tunney 2022-06-09 18:48:15 -07:00
parent fa1e8a3e65
commit a41669dec6
5 changed files with 59 additions and 19 deletions
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12
libc/x/xloadzd.c
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@ -20,6 +20,7 @@
#include "libc/fmt/leb128.h"
#include "libc/intrin/lockcmpxchg.h"
#include "libc/nexgen32e/crc32.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/x/x.h"
#include "third_party/zlib/zlib.h"
@ -47,16 +48,7 @@ void *xloadzd(bool *o, void **t, const void *p, size_t n, size_t m, size_t c,
int64_t x, y;
assert(z == 2 || z == 4);
b = q = malloc(m);
zs.zfree = 0;
zs.zalloc = 0;
zs.next_in = p;
zs.avail_in = n;
zs.total_in = n;
zs.avail_out = m;
zs.total_out = m;
zs.next_out = (void *)q;
inflateInit2(&zs, -MAX_WBITS);
inflate(&zs, Z_NO_FLUSH);
__inflate(q, m, p, n);
r = memalign(z, c * z);
for (x = i = 0; i < c; ++i) {
b += unzleb64(b, 10, &y);