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| author | --global <strap012@umn.edu> | 2020-10-24 14:18:54 -0500 |
|---|---|---|
| committer | --global <strap012@umn.edu> | 2020-10-24 14:18:54 -0500 |
| commit | 62d9558a6e7dc6b98b2ef7fe83113040ffb24093 (patch) | |
| tree | 9c5e724b47c657bff92911d1f9fca9201d199438 /P2/lib | |
| parent | Change dev enivronment (diff) | |
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Work on getData
Diffstat (limited to 'P2/lib')
| -rw-r--r-- | P2/lib/utils.c | 13 |
1 files changed, 11 insertions, 2 deletions
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 |