mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-28 00:02:28 +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/msync-nt.c
View file

@ -31,7 +31,7 @@
noasan textwindows int sys_msync_nt(char *addr, size_t size, int flags) {
int i, rc = 0;
char *a, *b, *x, *y;
_spinlock(&_mmi.lock);
__mmi_lock();
for (i = FindMemoryInterval(&_mmi, (intptr_t)addr >> 16); i < _mmi.i; ++i) {
x = ADDR(_mmi.p[i].x);
y = x + _mmi.p[i].size;
@ -48,6 +48,6 @@ noasan textwindows int sys_msync_nt(char *addr, size_t size, int flags) {
break;
}
}
_spunlock(&_mmi.lock);
__mmi_unlock();
return rc;
}