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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/__gbkext_decmap.c vendored
View file

@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool __gbkext_decmap_once;
static void *__gbkext_decmap_ptr;
static _Atomic(void *) __gbkext_decmap_ptr;
static const unsigned char __gbkext_decmap_rodata[3936] = {
0xbd, 0x5b, 0xdb, 0x73, 0x56, 0xd5, 0x15, 0x97, 0xbd, 0x7f, 0x67, 0x65, 0xbb,
0xe7, 0x78, 0xe6, 0x9b, 0x4c, 0x26, 0xc3, 0x30, 0x3c, 0x38, 0x3e, 0x74, 0x3a,
@ -310,9 +309,7 @@ static const unsigned char __gbkext_decmap_rodata[3936] = {
};
optimizesize void *__gbkext_decmap(void) {
if (__gbkext_decmap_once) return __gbkext_decmap_ptr;
return xloadzd(&__gbkext_decmap_once,
&__gbkext_decmap_ptr,
return xloadzd(&__gbkext_decmap_ptr,
__gbkext_decmap_rodata,
3936, 15071, 14531, 2, 0xe6585743u); /* 13.5435% profit */
}