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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/__cp950ext_decmap.c vendored
View file

@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool __cp950ext_decmap_once;
static void *__cp950ext_decmap_ptr;
static _Atomic(void *) __cp950ext_decmap_ptr;
static const unsigned char __cp950ext_decmap_rodata[92] = {
0x3b, 0xd7, 0xc0, 0xb8, 0xee, 0x3f, 0x1b, 0x03, 0x04, 0xdc, 0x64, 0xbb, 0x05,
0x63, 0xd2, 0x11, 0xcc, 0xfd, 0xcb, 0x3e, 0xef, 0x2f, 0x3b, 0x01, 0x45, 0xfb,
@ -15,9 +14,7 @@ static const unsigned char __cp950ext_decmap_rodata[92] = {
};
optimizesize void *__cp950ext_decmap(void) {
if (__cp950ext_decmap_once) return __cp950ext_decmap_ptr;
return xloadzd(&__cp950ext_decmap_once,
&__cp950ext_decmap_ptr,
return xloadzd(&__cp950ext_decmap_ptr,
__cp950ext_decmap_rodata,
92, 256, 224, 2, 0x852ba419u); /* 20.5357% profit */
}