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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
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@ -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[] = {
0x63, 0x60, 0x18, 0x05, 0xa3, 0x60, 0x60, 0x01, 0x23, 0x83, 0xeb, 0xe7, 0x0d,
0x0c, 0x8e, 0xee, 0xdb, 0x19, 0x1e, 0x3e, 0x1c, 0x0d, 0x0d, 0xea, 0x83, 0x1d,
@ -10,9 +9,7 @@ static const unsigned char cp950ext_decmap_rodata[] = {
};
optimizesize void *cp950ext_decmap(void) {
if (cp950ext_decmap_once) return cp950ext_decmap_ptr;
return xload(&cp950ext_decmap_once,
&cp950ext_decmap_ptr,
return xload(&cp950ext_decmap_ptr,
cp950ext_decmap_rodata,
33, 1024); /* 3.22266% profit */
}