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 ksx1001_decmap_once;
static void *ksx1001_decmap_ptr;
static _Atomic(void *) ksx1001_decmap_ptr;
static const unsigned char ksx1001_decmap_rodata[] = {
0xed, 0xd0, 0xb1, 0x2b, 0xc4, 0x71, 0x18, 0xc7, 0xf1, 0xdf, 0xd7, 0xef, 0x38,
0xe7, 0x1c, 0x0e, 0xe7, 0x70, 0xce, 0xf5, 0x19, 0x64, 0x30, 0xc8, 0x20, 0x83,
@ -28,9 +27,7 @@ static const unsigned char ksx1001_decmap_rodata[] = {
};
optimizesize void *ksx1001_decmap(void) {
if (ksx1001_decmap_once) return ksx1001_decmap_ptr;
return xload(&ksx1001_decmap_once,
&ksx1001_decmap_ptr,
return xload(&ksx1001_decmap_ptr,
ksx1001_decmap_rodata,
270, 1024); /* 26.3672% profit */
}