Make more threading improvements

- 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

View file

@ -1,8 +1,7 @@
#include "libc/x/x.h"
/* clang-format off */
static bool cp950ext_encmap_once;
static void *cp950ext_encmap_ptr;
static _Atomic(void *) cp950ext_encmap_ptr;
static const unsigned char cp950ext_encmap_rodata[] = {
0x63, 0x64, 0x58, 0xbf, 0x9e, 0x61, 0x00, 0x01, 0x13, 0x83, 0xfa, 0x1a, 0x10,
0xdd, 0xc1, 0x20, 0x3a, 0x13, 0x26, 0xc6, 0xcb, 0x18, 0x38, 0x99, 0x61, 0x98,
@ -14,9 +13,7 @@ static const unsigned char cp950ext_encmap_rodata[] = {
};
optimizesize void *cp950ext_encmap(void) {
if (cp950ext_encmap_once) return cp950ext_encmap_ptr;
return xload(&cp950ext_encmap_once,
&cp950ext_encmap_ptr,
return xload(&cp950ext_encmap_ptr,
cp950ext_encmap_rodata,
83, 1024); /* 8.10547% profit */
}