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author | Matt Strapp <strap012@umn.edu> | 2020-10-26 08:46:02 -0500 |
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committer | Matt Strapp <strap012@umn.edu> | 2020-10-26 08:46:02 -0500 |
commit | b7243503698bc4af05d29886554e1280af38e350 (patch) | |
tree | 1bc6543b96eb4fa8ced332bce4ac78ca1bd9225c /P2/lib | |
parent | Add error checking (diff) | |
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Add new template
Diffstat (limited to '')
-rw-r--r-- | P2/lib/utils.c | 54 |
1 files changed, 1 insertions, 53 deletions
diff --git a/P2/lib/utils.c b/P2/lib/utils.c index 603a699..17b3104 100644 --- a/P2/lib/utils.c +++ b/P2/lib/utils.c @@ -1,62 +1,10 @@ #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 | IPC_CREAT); - if (mid < 0) { - perror("Cannot open queue.\n"); - return NULL; - } - msgrcv(mid, &message, MSGSIZE, mapperID, 0); - if (strcmp("END", message.msgText)) { - struct msgBuffer ACK = {mapperID, "ACK"}; - msgsnd(mid, &ACK, MSGSIZE, 0); - } - // msgctl(mid, IPC_RMID, 0); - return message.msgText; } // sends chunks of size 1024 to the mappers in RR fashion void sendChunkData(char *inputFile, int nMappers) { - struct msgBuffer message; - key_t key = 10; - int msgid; - - // open message queue - msgid = msgget(key, 0666 | IPC_CREAT); - if (msgid < 0) { - perror("Cannot open queue.\n"); - exit(-1); - } - // message.msgText = 1; - FILE *fptr = fopen(inputFile, "r"); - - // construct chunks of 1024 bytes - while(fgets(&message, chunkSize, fptr) != EOF) { - - /* Go to the end of the chunk, check if final character - is a space if character is a space, do nothing - else cut off before that word and put back file */ - // TODO! help - - msgsnd(msgid, &message, mapperID); - } - - for (long i = 1; i < nMappers; i++) { - struct msgBuffer END = {i, "END"}; - msgsnd(msgid, &END, MSGSIZE, 0); - - // TODO! does this need to be in another loop or is blocking good enough? - msgrcv(msgid, &message, MSGSIZE, i, 0); - } - - // msgctl(msgid, IPC_RMID, 0); // close that bih } // hash function to divide the list of word.txt files across reducers @@ -79,7 +27,7 @@ void shuffle(int nMappers, int nReducers) { // check if the character is valid for a word int validChar(char c){ - return ((tolower(c) >= 'a') && tolower(c <='z')) || + return (tolower(c) >= 'a' && tolower(c) <='z') || (c >= '0' && c <= '9'); } |