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Use re-entrant locks on stdio

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This commit is contained in:
Justine Tunney 2022-05-22 08:13:13 -07:00
parent 4e9662cbc7
commit 1f229e4efc
78 changed files with 427 additions and 179 deletions
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5
libc/stdio/ftello.c
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@ -18,7 +18,6 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/intrin/spinlock.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/internal.h"
#include "libc/stdio/stdio.h"
@ -49,8 +48,8 @@ static int64_t ftello_unlocked(FILE *f) {
*/
int64_t ftello(FILE *f) {
int64_t rc;
_spinlock(&f->lock);
flockfile(f);
rc = ftello_unlocked(f);
_spunlock(&f->lock);
funlockfile(f);
return rc;
}