From 62d9558a6e7dc6b98b2ef7fe83113040ffb24093 Mon Sep 17 00:00:00 2001
From: --global <strap012@umn.edu>
Date: Sat, 24 Oct 2020 14:18:54 -0500
Subject: Work on getData

---
 P2/lib/utils.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'P2')

diff --git a/P2/lib/utils.c b/P2/lib/utils.c
index 2d15d0f..b4e3b84 100644
--- a/P2/lib/utils.c
+++ b/P2/lib/utils.c
@@ -1,14 +1,23 @@
 #include "utils.h"
 
 char *getChunkData(int mapperID) {
+	//Message
+	struct msgBuffer* message;
+	//Queue ID
 	int mid;
+	//Queue Key
 	key_t key = 10;
 	mid = msgget(key, 0666);
 	if (mid < 0) {
 		perror("Cannot open queue.\n");
-		exit(0);
+		return NULL;
 	}
-
+	msgrcv(mid, (void *) &message, MSGSIZE, mapperID, 0);
+	if (strcmp("END", message -> msgText)) {
+		msgsnd(mid, (void *) "ACK", 3, 0);
+	}
+	char* returnValue = message -> msgText;
+	return returnValue;
 }
 
 // sends chunks of size 1024 to the mappers in RR fashion
-- 
cgit v1.2.3