mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-23 05:42:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make locks more reliable

Browse source 
This change switches most of the core locks to be re-entrant, in order
to reduce the chance of deadlocking code that does, clever things with
asynchronous signal handlers. This change implements it it in pthreads
so we're one step closer to having a standardized threading primitives
This commit is contained in:
Justine Tunney 2022-06-11 01:59:26 -07:00
parent 5ea618f0af
commit c260345e06
35 changed files with 369 additions and 258 deletions
Download patch file Download diff file Expand all files Collapse all files

4
libc/runtime/munmap.c
View file

@ -164,12 +164,12 @@ static noasan int Munmap(char *p, size_t n) {
noasan int munmap(void *p, size_t n) {
int rc;
size_t toto;
_spinlock(&_mmi.lock);
__mmi_lock();
rc = Munmap(p, n);
#if SYSDEBUG
toto = __strace > 0 ? GetMemtrackSize(&_mmi) : 0;
#endif
_spunlock(&_mmi.lock);
__mmi_unlock();
STRACE("munmap(%.12p, %'zu) → %d% m (%'zu bytes total)", p, n, rc, toto);
return rc;
}