From f16480506a6cd3f23f82b940a617e4138f9362ac Mon Sep 17 00:00:00 2001
From: skeezix <skeezix@flotsam-vm.(none)>
Date: Mon, 21 Dec 2009 13:13:50 -0500
Subject: [PATCH] Added a flush option to pnd_log, which makes log-to-stdout
 useful

---
 apps/pndnotifyd.c    | 1 +
 include/pnd_logger.h | 2 ++
 lib/pnd_logger.c     | 9 +++++++++
 3 files changed, 12 insertions(+)

diff --git a/apps/pndnotifyd.c b/apps/pndnotifyd.c
index 66bd43d..73fcbab 100644
--- a/apps/pndnotifyd.c
+++ b/apps/pndnotifyd.c
@@ -113,6 +113,7 @@ int main ( int argc, char *argv[] ) {
     pnd_log_set_filter ( pndn_rem );
     pnd_log_set_pretext ( "pndnotifyd" );
     pnd_log_to_stdout();
+    pnd_log_set_flush ( 1 );
     pnd_log ( pndn_rem, "log level starting as %u", pnd_log_get_filter() );
   }
 
diff --git a/include/pnd_logger.h b/include/pnd_logger.h
index d9fcc19..6db1aed 100644
--- a/include/pnd_logger.h
+++ b/include/pnd_logger.h
@@ -30,6 +30,8 @@ unsigned char pnd_log_to_callback ( pnd_log_callback_f f, void *userdata ); // N
 
 // pass NULL to free any pre-text, otherwise it'll be kept. Passed in string is duplicated, so you may free yours if you like.
 void pnd_log_set_pretext ( char * );                                        // example: your app-name, or app+function-names, say.
+// after a write, do a flush; may only apply to streams, but will attempt to apply to all
+void pnd_log_set_flush ( unsigned char x );
 
 // set a 'filter level'; any log message of higher-or-equal level than current filter-level will be emitted. Thus, to remove filters
 // just set to level 0. Returns existing setting.
diff --git a/lib/pnd_logger.c b/lib/pnd_logger.c
index ebfd230..96b3e3f 100644
--- a/lib/pnd_logger.c
+++ b/lib/pnd_logger.c
@@ -6,6 +6,7 @@
 
 char *log_pretext = NULL;
 unsigned char log_filterlevel = 0;
+unsigned char log_flushafter = 0;
 
 typedef enum {
   pndl_nil = 0,
@@ -47,6 +48,11 @@ unsigned char pnd_log_get_filter ( void ) {
   return ( log_filterlevel );
 }
 
+void pnd_log_set_flush ( unsigned char x ) {
+  log_flushafter = x;
+  return;
+}
+
 void pnd_log_set_pretext ( char *pre ) {
 
   if ( log_pretext ) {
@@ -120,6 +126,9 @@ void pnd_log_emit ( char *message ) {
 	if ( strchr ( message, '\n' ) == NULL ) {
 	  fprintf ( log_targets [ i ].stream, "\n" );
 	}
+	if ( log_flushafter ) {
+	  fflush ( log_targets [ i ].stream );
+	}
       }
       break;
 
-- 
2.39.5