diff options
Diffstat (limited to '')
| -rw-r--r-- | P2/include/utils.h | 2 | ||||
| -rw-r--r-- | P2/lib/utils.c | 18 |
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 |