From 4f0bc181b60325bd2b5deffd3060229ff63a46da Mon Sep 17 00:00:00 2001
From: Abhishek Sagar <sachinites@gmail.com>
Date: Fri, 23 Oct 2020 23:09:05 -0700
Subject: [PATCH] made posix timer as embedded timer instead of 'has a' timer
 within wrapper timer

---
 WheelTimer/libtimer/Course/timerlib.h | 59 +++++++++++++++++++++++++++
 WheelTimer/libtimer/timerlib.c        |  2 -
 2 files changed, 59 insertions(+), 2 deletions(-)
 create mode 100644 WheelTimer/libtimer/Course/timerlib.h

diff --git a/WheelTimer/libtimer/Course/timerlib.h b/WheelTimer/libtimer/Course/timerlib.h
new file mode 100644
index 0000000..f97a791
--- /dev/null
+++ b/WheelTimer/libtimer/Course/timerlib.h
@@ -0,0 +1,59 @@
+/*
+ * =====================================================================================
+ *
+ *       Filename:  timerlib.h
+ *
+ *    Description: This file is a wrapper over Timer POSIX Timer library 
+ *
+ *        Version:  1.0
+ *        Created:  10/12/2020 01:47:16 PM
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  ABHISHEK SAGAR (), sachinites@gmail.com
+ *   Organization:  Juniper Networks
+ *
+ * =====================================================================================
+ */
+
+#ifndef __TIMER_WRAP__
+#define __TIMER_WRAP__
+
+#include <signal.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef enum{
+
+	TIMER_INIT,
+	TIMER_DELETED,
+	TIMER_PAUSED,
+	TIMER_CANCELLED,
+	TIMER_RESUMED,
+	TIMER_RUNNING,
+} TIMER_STATE_T;
+
+typedef struct Timer_{
+
+	/* Timer config */
+    timer_t posix_timer;
+    void *user_arg;
+	unsigned long exp_timer;		/* in milli-sec */
+	unsigned long sec_exp_timer;	/* in milli-sec */
+	uint32_t thresdhold;			/* No of times to invoke the timer callback */
+	void (*cb)(struct Timer_ *, void *); /* Timer Callback  */
+	bool exponential_backoff;
+
+	/* place holder value to store
+ 	 * dynamic attributes of timer */
+	unsigned long time_remaining;	/* Time left for paused timer for next expiration */
+	uint32_t invocation_counter; 
+	struct itimerspec ts;
+	unsigned long exp_back_off_time;
+	TIMER_STATE_T timer_state;
+} Timer_t;
+
+#endif /* __TIMER_WRAP__  */
diff --git a/WheelTimer/libtimer/timerlib.c b/WheelTimer/libtimer/timerlib.c
index 7e7ea22..9ed5f62 100644
--- a/WheelTimer/libtimer/timerlib.c
+++ b/WheelTimer/libtimer/timerlib.c
@@ -151,8 +151,6 @@ delete_timer(Timer_t *timer){
 	int rc;
 	rc = timer_delete(*(timer->posix_timer));
 	assert(rc >= 0);
-	free(timer->posix_timer);
-	timer->posix_timer = NULL;
 	timer->user_arg = NULL; /* User arg need to be freed by Appln */
 	timer_set_state(timer, TIMER_DELETED);
 }