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authorMatthew Strapp <strap012@umn.edu>2020-10-24 17:55:51 -0500
committerGitHub Enterprise <noreply-github@umn.edu>2020-10-24 17:55:51 -0500
commit8f9e0d0ad99fa2fde15516a6053e47e95175c0db (patch)
treed6a70298a5e3715e493cfaa455783513170c20ba /P2/lib
parentsendChunk (diff)
parentGet rid of variable (diff)
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Merge getChunkData() with master
Diffstat (limited to 'P2/lib')
-rw-r--r--P2/lib/utils.c18
1 files changed, 18 insertions, 0 deletions
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