Merge getChunkData() with master

2 files changed, 20 insertions, 0 deletions

diff --git a/P2/include/utils.h b/P2/include/utils.h
index 2c91cdf..e3f5d43 100644
--- a/P2/include/utils.h
+++ b/P2/include/utils.h
@@ -23,6 +23,7 @@ struct msgBuffer {
 };
 
 // mapper side
+
 int validChar(char c);
 char *getWord(char *chunk, int *i);
 char *getChunkData(int mapperID);
@@ -30,6 +31,7 @@ void sendChunkData(char *inputFile, int nMappers);
 
 
 // reducer side
+
 int hashFunction(char* key, int reducers);
 int getInterData(char *key, int reducerID);
 void shuffle(int nMappers, int nReducers);
diff --git a/P2/lib/utils.c b/P2/lib/utils.c
index 79b309e..dba63b5 100644
--- a/P2/lib/utils.c
+++ b/P2/lib/utils.c
@@ -1,6 +1,24 @@
 #include "utils.h"
 
+//Receive from send and return the chonk
 char *getChunkData(int mapperID) {
+	//Message
+	struct msgBuffer* message;
+	//Queue ID, not sure what it actually does
+	int mid;
+	//Queue Key
+	key_t key = 10;
+	mid = msgget(key, 0666);
+	if (mid < 0) {
+		perror("Cannot open queue.\n");
+		return NULL;
+	}
+	msgrcv(mid, (void *) &message, MSGSIZE, mapperID, 0);
+	if (strcmp("END", message -> msgText)) {
+		struct msgBuffer ACK = {mapperID, "ACK"};
+		msgsnd(mid, (void *) &ACK, MSGSIZE, 0);
+	}
+	return message -> msgText;
 }
 
 // sends chunks of size 1024 to the mappers in RR fashion