X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Ffflush.c;h=e03079fcc9c17fdf661a961b77fdbec46cbbab60;hb=0e35e82c5e9a0804864839e8fc0e985b1ae41f07;hp=2ddb0ad18faad013c166f27a07fc570ef098909c;hpb=a6dd99e5c0b3af81082d24751218c21f7f3e7443;p=pdclib.old

diff --git a/functions/stdio/fflush.c b/functions/stdio/fflush.c
index 2ddb0ad..e03079f 100644
--- a/functions/stdio/fflush.c
+++ b/functions/stdio/fflush.c
@@ -7,25 +7,46 @@
 */
 
 #include <stdio.h>
-#include <_PDCLIB_glue.h>
 
 #ifndef REGTEST
+#include <_PDCLIB_io.h>
 
-int fflush( struct _PDCLIB_file_t * stream )
+extern FILE * _PDCLIB_filelist;
+
+int fflush_unlocked( FILE * stream )
 {
-    /* FIXME: This is ad-hoc. */
-    if ( fwrite( stream->buffer, stream->bufidx, 1, stream ) == stream->bufidx )
+    if ( stream == NULL )
     {
-        stream->bufidx = 0;
-        return 0;
+        stream = _PDCLIB_filelist;
+        /* TODO: Check what happens when fflush( NULL ) encounters write errors, in other libs */
+        int rc = 0;
+        while ( stream != NULL )
+        {
+            if ( stream->status & _PDCLIB_FWRITE )
+            {
+                if ( _PDCLIB_flushbuffer( stream ) == EOF )
+                {
+                    rc = EOF;
+                }
+            }
+            stream = stream->next;
+        }
+        return rc;
     }
     else
     {
-        stream->status |= _PDCLIB_ERRORFLAG;
-        return EOF;
+        return _PDCLIB_flushbuffer( stream );
     }
 }
 
+int fflush( FILE * stream )
+{
+    flockfile( stream );
+    int res = fflush_unlocked(stream);
+    funlockfile( stream );
+    return res;
+}
+                
 #endif
 
 #ifdef TEST
@@ -33,7 +54,7 @@ int fflush( struct _PDCLIB_file_t * stream )
 
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+    /* Testing covered by ftell.c */
     return TEST_RESULTS;
 }