* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
static char sccsid[] = "@(#)findfp.c 8.2 (Berkeley) 1/4/94";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/findfp.c,v 1.29 2004/05/22 15:19:41 tjr Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdio/findfp.c,v 1.34 2009/12/05 19:31:38 ed Exp $");
+
+#include <TargetConditionals.h>
#include <sys/param.h>
#include <machine/atomic.h>
int __sdidinit;
+#if !TARGET_OS_EMBEDDED
#define NDYNAMIC 10 /* add ten more whenever necessary */
+#else
+#define NDYNAMIC 1 /* add one at a time on embedded */
+#endif
-#define std(flags, file) \
- {0,0,0,flags,file,{0},0,__sF+file,__sclose,__sread,__sseek,__swrite, \
- {0}, __sFX + file}
- /* p r w flags file _bf z cookie close read seek write */
- /* _ub _extra */
-#define __sFXInit {0, PTHREAD_MUTEX_INITIALIZER}
+#define std(flags, file) { \
+ ._flags = (flags), \
+ ._file = (file), \
+ ._cookie = __sF + (file), \
+ ._close = __sclose, \
+ ._read = __sread, \
+ ._seek = __sseek, \
+ ._write = __swrite, \
+ ._extra = __sFX + file, \
+}
+#define __sFXInit {.fl_mutex = PTHREAD_MUTEX_INITIALIZER}
/* set counted */
-#define __sFXInit3 {0, PTHREAD_MUTEX_INITIALIZER, 0, 0, 0, 1}
- /* the usual - (stdin + stdout + stderr) */
+#define __sFXInit3 {.fl_mutex = PTHREAD_MUTEX_INITIALIZER, .counted = 1}
static int __scounted; /* streams counted against STREAM_MAX */
static int __stream_max;
+#if !TARGET_OS_EMBEDDED
+/* usual and usual_extra are data pigs. See 7929728. For embedded we should
+ * always allocate dynamically, and probably should for desktop too. */
+ /* the usual - (stdin + stdout + stderr) */
static FILE usual[FOPEN_MAX - 3];
static struct __sFILEX usual_extra[FOPEN_MAX - 3];
static struct glue uglue = { NULL, FOPEN_MAX - 3, usual };
+#endif /* !TARGET_OS_EMBEDDED */
static struct __sFILEX __sFX[3] = {__sFXInit3, __sFXInit3, __sFXInit3};
/*
- * We can't make this 'static' until 6.0-current due to binary
- * compatibility concerns. This also means we cannot change the
- * sizeof(FILE) until that time either and must continue to use the
- * __sFILEX stuff to add to FILE.
+ * We can't make this 'static' due to binary compatibility concerns.
+ * This also means we cannot change the sizeof(FILE) and must continue to
+ * use the __sFILEX stuff to add to FILE.
*/
FILE __sF[3] = {
std(__SRD, STDIN_FILENO),
std(__SWR|__SNBF, STDERR_FILENO)
};
-/*
- * The following kludge is done to ensure enough binary compatibility
- * with future versions of libc. Or rather it allows us to work with
- * libraries that have been built with a newer libc that defines these
- * symbols and expects libc to provide them. We only have need to support
- * i386 and alpha because they are the only "old" systems we have deployed.
- */
FILE *__stdinp = &__sF[0];
FILE *__stdoutp = &__sF[1];
FILE *__stderrp = &__sF[2];
+#if !TARGET_OS_EMBEDDED
struct glue __sglue = { &uglue, 3, __sF };
static struct glue *lastglue = &uglue;
+#else
+struct glue __sglue = { NULL, 3, __sF };
+static struct glue *lastglue = &__sglue;
+#endif
static struct glue * moreglue(int);
{
struct glue *g;
static FILE empty;
- static struct __sFILEX emptyx = __sFXInit;
FILE *p;
+ static struct __sFILEX emptyx = __sFXInit;
struct __sFILEX *fx;
g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE) +
g->next = NULL;
g->niobs = n;
g->iobs = p;
+
while (--n >= 0) {
*p = empty;
p->_extra = fx;
fp->_lb._base = NULL; /* no line buffer */
fp->_lb._size = 0;
/* fp->_lock = NULL; */ /* once set always set (reused) */
- fp->_extra->fl_mutex = (pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER;
- fp->_extra->orientation = 0;
+ INITEXTRA(fp);
fp->_extra->counted = count ? 1 : 0;
- memset(&fp->_extra->mbstate, 0, sizeof(mbstate_t));
return (fp);
}
__private_extern__ void
__sfprelease(FILE *fp)
{
- if (fp->_extra->counted) {
+ if (fp->_counted) {
OSAtomicDecrement32(&__scounted);
- fp->_extra->counted = 0;
+ fp->_counted = 0;
}
fp->_flags = 0;
}
"warning: this program uses f_prealloc(), which is not recommended.");
void
-f_prealloc()
+f_prealloc(void)
{
struct glue *g;
int n;
void
__sinit()
{
- int i;
-
THREAD_LOCK();
if (__sdidinit == 0) {
- /* Set _extra for the usual suspects. */
- for (i = 0; i < FOPEN_MAX - 3; i++)
- usual[i]._extra = &usual_extra[i];
-
+#if !TARGET_OS_EMBEDDED
+ int i;
+#endif
/* Make sure we clean up on exit. */
__cleanup = _cleanup; /* conservative */
- __sdidinit = 1;
__stream_max = sysconf(_SC_STREAM_MAX);
__scounted = 3; /* std{in,out,err} already exists */
+
+#if !TARGET_OS_EMBEDDED
+ /* Set _extra for the usual suspects. */
+ for (i = 0; i < FOPEN_MAX - 3; i++) {
+ usual[i]._extra = &usual_extra[i];
+ INITEXTRA(&usual[i]);
+ }
+#endif
+
+ __sdidinit = 1;
}
THREAD_UNLOCK();
}
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