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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/fseeko.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/stdio/internal.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/o.h"
@ -36,11 +35,10 @@
* @param whence can be SEET_SET, SEEK_CUR, or SEEK_END
* @returns 0 on success or -1 on error
*/
int fseeko(FILE *f, int64_t offset, int whence) {
int fseeko_unlocked(FILE *f, int64_t offset, int whence) {
int res;
ssize_t rc;
int64_t pos;
_spinlock(&f->lock);
if (f->fd != -1) {
if (__fflush_impl(f) == -1) return -1;
if (whence == SEEK_CUR && f->beg < f->end) {
@ -77,6 +75,5 @@ int fseeko(FILE *f, int64_t offset, int whence) {
res = -1;
}
}
_spunlock(&f->lock);
return res;
}