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 big5_decmap_once;
static void *big5_decmap_ptr;
static _Atomic(void *) big5_decmap_ptr;
static const unsigned char big5_decmap_rodata[] = {
0xed, 0xd0, 0x3b, 0x4b, 0x15, 0x00, 0x1c, 0x86, 0xf1, 0x73, 0x34, 0xef, 0x69,
0xde, 0x32, 0xcb, 0x63, 0x69, 0xa9, 0x59, 0x5a, 0x5e, 0xce, 0xc9, 0x73, 0xf2,
@ -31,9 +30,7 @@ static const unsigned char big5_decmap_rodata[] = {
};
optimizesize void *big5_decmap(void) {
if (big5_decmap_once) return big5_decmap_ptr;
return xload(&big5_decmap_once,
&big5_decmap_ptr,
return xload(&big5_decmap_ptr,
big5_decmap_rodata,
305, 1024); /* 29.7852% profit */
}