From 1024b52f2cdc1a0975d96f8aceb861ddcccba806 Mon Sep 17 00:00:00 2001
From: volker <volker@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>
Date: Wed, 13 Feb 2013 14:00:30 +0000
Subject: Ticket #284

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@1193 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
---
 svn_version.h |  2 +-
 timer_group.c | 25 ++++++++++++++++++-------
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/svn_version.h b/svn_version.h
index 5df47cf..c5c25bc 100644
--- a/svn_version.h
+++ b/svn_version.h
@@ -1 +1 @@
-#define SVN_VERSION "1192"
+#define SVN_VERSION "1193"
diff --git a/timer_group.c b/timer_group.c
index 777c2db..4dfbb1b 100644
--- a/timer_group.c
+++ b/timer_group.c
@@ -75,10 +75,10 @@
 
 /* structure for storing all relevant data of a single timer group */
 typedef struct TIMER_GROUP {
-    /* group's triggering interval in milliseconds;
+    /* pointer to the group's triggering interval in milliseconds;
        this will be used to identify a specific timer group and also
        as callback data for the underlying generic timer */
-    int interval;
+    int *interval;
 
     /* marks timer group as being active (so it will get processed) or
        inactive (which means the timer group has been deleted and its
@@ -144,7 +144,7 @@ int timer_group_exists(const int interval)
 	if (TimerGroups[group].active == TIMER_INACTIVE)
 	    continue;
 
-	if (TimerGroups[group].interval == interval) {
+	if (*TimerGroups[group].interval == interval) {
 	    /* matching timer group found, so signal success by returning
 	       a value of 1 */
 	    return 1;
@@ -185,6 +185,7 @@ int timer_add_group(const int interval)
 	if (TimerGroups[group].active == TIMER_INACTIVE) {
 	    /* we've just found one, so let's reuse it ("group" holds its
 	       ID) by breaking the loop */
+            debug("Reusing Timergroup %i", group);
 	    break;
 	}
     }
@@ -195,15 +196,21 @@ int timer_add_group(const int interval)
 	TIMER_GROUP *tmp;
 
 	if ((tmp = realloc(TimerGroups, (nTimerGroups + 1) * sizeof(*TimerGroups))) == NULL) {
+            error("Error expanding TimerGroups");
 	    /* signal unsuccessful timer group creation */
 	    return -1;
 	}
 	TimerGroups = tmp;
 	nTimerGroups++;
+
+        if ((TimerGroups[group].interval = malloc(sizeof(int))) == NULL) {
+            /* signal unsuccessful timer group creation */
+            return -1;
+        }
     }
 
     /* initialize timer group's interval */
-    TimerGroups[group].interval = interval;
+    *TimerGroups[group].interval = interval;
 
     /* set timer group to active so that it is processed and not
        overwritten by the memory optimization routine above */
@@ -211,7 +218,7 @@ int timer_add_group(const int interval)
 
     /* finally, request a generic timer that calls this group and
        signal success or failure */
-    return timer_add(timer_process_group, &TimerGroups[group].interval, interval, 0);
+    return timer_add(timer_process_group, TimerGroups[group].interval, interval, 0);
 }
 
 
@@ -255,7 +262,7 @@ int timer_remove_group(const int interval)
 	if (TimerGroups[group].active == TIMER_INACTIVE)
 	    continue;
 
-	if (TimerGroups[group].interval == interval) {
+	if (*TimerGroups[group].interval == interval) {
 	    /* we have found the timer group slot, so mark it as being
 	       inactive; we will not actually delete the slot, so its
 	       allocated memory may be re-used */
@@ -504,7 +511,11 @@ void timer_exit_group(void)
     /* loop through all timer groups and remove them one by one */
     for (group = 0; group < nTimerGroups; group++) {
 	/* remove generic timer */
-	timer_remove(timer_process_group, &TimerGroups[group].interval);
+	timer_remove(timer_process_group, TimerGroups[group].interval);
+
+        /* free memory allocated for callback data (i.e. the group's
+           triggering interval in milliseconds) */
+        free(TimerGroups[group].interval);
     }
 
     /* reset number of allocated timer groups */
-- 
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