Added missing libsw library

external/libsdf/libsw/ivfprintf.c

@@ -0,0 +1,54 @@
+#ifdef __SRV__
+ # error This file should not be compiled with srv
+#endif
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#ifndef FORCE_TYPE
+/* mesh.h is not protected against multiple inclusion ! */
+#include <mesh.h>
+#endif
+
+/* Why isn't this in mesh.h? */
+extern void iowait(int);
+
+/* A fast asynchronous disk message primitive */
+
+/* There is circumstantial evidence that the delta dies if we have many */
+/* iwrites pending and call ifflush  ???? (maybe fixed - johns ) ????*/
+
+static int id[] = {-1, -1, -1, -1, -1, -1, -1, -1};
+#define NID (sizeof(id)/sizeof(id[0]))
+static int nid = 0;
+static char buf[NID][1024];
+
+void
+ivfprintf(FILE *stream, const char *fmt, va_list args)
+{
+    if (id[nid] != -1){
+	iowait(id[nid]);
+    }
+    vsprintf(buf[nid], fmt, args);
+    id[nid] = iwrite(fileno(stream), buf[nid], strlen(buf[nid]));
+    if( ++nid == NID )
+	nid = 0;
+}
+
+
+void
+ifflush(FILE *stream)
+{
+    int i;
+    int ii;
+    
+    /* stream not used.  Just wait for all the pending i/o */
+    for (ii = nid, i = 0; i < NID; i++){
+      if (id[ii] != -1) {
+	  iowait(id[ii]);
+	  id[ii] = -1;
+      }
+      if( ++ii == NID )
+	  ii = 0;
+  }
+}