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| author | Matthew Strapp <strap012@umn.edu> | 2020-10-24 17:55:51 -0500 |
|---|---|---|
| committer | GitHub Enterprise <noreply-github@umn.edu> | 2020-10-24 17:55:51 -0500 |
| commit | 8f9e0d0ad99fa2fde15516a6053e47e95175c0db (patch) | |
| tree | d6a70298a5e3715e493cfaa455783513170c20ba /P2/lib | |
| parent | sendChunk (diff) | |
| parent | Get rid of variable (diff) | |
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Merge getChunkData() with master
Diffstat (limited to 'P2/lib')
| -rw-r--r-- | P2/lib/utils.c | 18 |
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 |