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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/__gb2312_decmap.c vendored
View file

@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool __gb2312_decmap_once;
static void *__gb2312_decmap_ptr;
static _Atomic(void *) __gb2312_decmap_ptr;
static const unsigned char __gb2312_decmap_rodata[11651] = {
0xb5, 0xbb, 0x77, 0x54, 0x54, 0xd9, 0xd7, 0x2d, 0x7a, 0xe7, 0xae, 0x53, 0x45,
0x51, 0x14, 0x05, 0x14, 0x45, 0x46, 0x92, 0x48, 0x52, 0x10, 0x05, 0x05, 0x51,
@ -904,9 +903,7 @@ static const unsigned char __gb2312_decmap_rodata[11651] = {
};
optimizesize void *__gb2312_decmap(void) {
if (__gb2312_decmap_once) return __gb2312_decmap_ptr;
return xloadzd(&__gb2312_decmap_once,
&__gb2312_decmap_ptr,
return xloadzd(&__gb2312_decmap_ptr,
__gb2312_decmap_rodata,
11651, 13102, 7482, 2, 0xa41681b8u); /* 77.8602% profit */
}