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Fix some issues and do some code cleanup

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This commit is contained in:
Justine Tunney 2022-05-23 10:15:53 -07:00
parent 1f229e4efc
commit 312ed5c67c
72 changed files with 880 additions and 982 deletions
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78
libc/stdio/fflush.c
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@ -1,7 +1,7 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=8 sts=2 sw=2 fenc=utf-8 :vi│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
@ -16,83 +16,19 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/alg/arraylist.internal.h"
#include "libc/bits/bits.h"
#include "libc/bits/pushpop.h"
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/intrin/spinlock.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/fflush.internal.h"
#include "libc/stdio/internal.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/o.h"
/**
* Blocks until data from stream buffer is written out.
*
* @param f is the stream handle, or 0 for all streams
* @return is 0 on success or -1 on error
* @threadsafe
*/
int fflush_unlocked(FILE *f) {
int rc = 0;
size_t i;
if (!f) {
_spinlock(&__fflush.lock);
for (i = __fflush.handles.i; i; --i) {
if ((f = __fflush.handles.p[i - 1])) {
if (fflush(f) == -1) {
rc = -1;
}
}
}
_spunlock(&__fflush.lock);
} else if (f->fd != -1) {
if (__fflush_impl(f) == -1) {
rc = -1;
}
} else if (f->beg && f->beg < f->size) {
f->buf[f->beg] = 0;
}
return rc;
}
textstartup int __fflush_register(FILE *f) {
int fflush(FILE *f) {
int rc;
size_t i;
struct StdioFlush *sf;
_spinlock(&__fflush.lock);
sf = &__fflush;
if (!sf->handles.p) {
sf->handles.p = sf->handles_initmem;
pushmov(&sf->handles.n, ARRAYLEN(sf->handles_initmem));
__cxa_atexit(fflush_unlocked, 0, 0);
}
for (i = sf->handles.i; i; --i) {
if (!sf->handles.p[i - 1]) {
sf->handles.p[i - 1] = f;
_spunlock(&__fflush.lock);
return 0;
}
}
rc = append(&sf->handles, &f);
_spunlock(&__fflush.lock);
if (f) flockfile(f);
rc = fflush_unlocked(f);
if (f) funlockfile(f);
return rc;
}
void __fflush_unregister(FILE *f) {
size_t i;
struct StdioFlush *sf;
_spinlock(&__fflush.lock);
sf = &__fflush;
sf = pushpop(sf);
for (i = sf->handles.i; i; --i) {
if (sf->handles.p[i - 1] == f) {
pushmov(&sf->handles.p[i - 1], 0);
break;
}
}
_spunlock(&__fflush.lock);
}