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Make more threading improvements

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- ASAN memory morgue is now lockless
- Make C11 atomics header more portable
- Rewrote pthread keys support to be lockless
- Simplify Python's unicode table unpacking code
- Make crash report write(2) closer to being atomic
- Make it possible to strace/ftrace a single thread
- ASAN now checks nul-terminated strings fast and properly
- Windows fork() now restores TLS memory of calling thread
This commit is contained in:
Justine Tunney 2022-11-01 22:36:03 -07:00
parent d7b88734cd
commit e522aa3a07
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GPG key ID: BE714B4575D6E328
189 changed files with 1363 additions and 1217 deletions
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7
third_party/python/Modules/cjkcodecs/jisx0208_decmap.c vendored
View file

@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool jisx0208_decmap_once;
static void *jisx0208_decmap_ptr;
static _Atomic(void *) jisx0208_decmap_ptr;
static const unsigned char jisx0208_decmap_rodata[] = {
0xed, 0xcb, 0xbf, 0x47, 0xc4, 0x71, 0x00, 0xc6, 0xf1, 0xcf, 0xf7, 0xae, 0xae,
0xbb, 0xea, 0xea, 0xea, 0xea, 0xfa, 0x25, 0x7a, 0x44, 0x11, 0x71, 0x5b, 0x1c,
@ -26,9 +25,7 @@ static const unsigned char jisx0208_decmap_rodata[] = {
};
optimizesize void *jisx0208_decmap(void) {
if (jisx0208_decmap_once) return jisx0208_decmap_ptr;
return xload(&jisx0208_decmap_once,
&jisx0208_decmap_ptr,
return xload(&jisx0208_decmap_ptr,
jisx0208_decmap_rodata,
236, 1024); /* 23.0469% profit */
}