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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/gbcommon_encmap.c vendored
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@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool gbcommon_encmap_once;
static void *gbcommon_encmap_ptr;
static _Atomic(void *) gbcommon_encmap_ptr;
static const unsigned char gbcommon_encmap_rodata[] = {
0xed, 0xce, 0xbb, 0x32, 0x03, 0x61, 0x18, 0x87, 0xf1, 0xef, 0xcb, 0x66, 0x57,
0xb0, 0x88, 0x65, 0x11, 0xc7, 0x84, 0x04, 0x4b, 0x10, 0x11, 0x71, 0x88, 0x63,
@ -28,9 +27,7 @@ static const unsigned char gbcommon_encmap_rodata[] = {
};
optimizesize void *gbcommon_encmap(void) {
if (gbcommon_encmap_once) return gbcommon_encmap_ptr;
return xload(&gbcommon_encmap_once,
&gbcommon_encmap_ptr,
return xload(&gbcommon_encmap_ptr,
gbcommon_encmap_rodata,
263, 1024); /* 25.6836% profit */
}