diff options
Diffstat (limited to '')
| -rw-r--r-- | P2/include/utils.h | 2 | ||||
| -rw-r--r-- | P2/lib/utils.c | 40 |
2 files changed, 23 insertions, 19 deletions
diff --git a/P2/include/utils.h b/P2/include/utils.h index 2c91cdf..c4d2eb4 100644 --- a/P2/include/utils.h +++ b/P2/include/utils.h @@ -21,6 +21,8 @@ struct msgBuffer { long msgType; char msgText[MSGSIZE]; }; +//Open Queue as a function because writing this once is probably better than four times. +int openQueue(); // mapper side int validChar(char c); diff --git a/P2/lib/utils.c b/P2/lib/utils.c index 3fd82f3..c31e7fc 100644 --- a/P2/lib/utils.c +++ b/P2/lib/utils.c @@ -1,19 +1,23 @@ #include "utils.h" +int openQueue() { + key_t Qkey = ftok("4061 Project 2 SS", 'S'); + int id = msgget(Qkey, 0666 | IPC_CREAT); + if (id < 0) + { + perror("Cannot open queue.\n"); + return NULL; + }; + return id; +} char *getChunkData(int mapperID) { //Message struct msgBuffer message; - //Queue ID, not sure what it actually does - int mid; - //Queue Key, because globals bad - key_t Qkey = ftok("4061 Project 2 SS", 'S'); - mid = msgget(Qkey, 0666 | IPC_CREAT); - if (mid < 0) { - perror("Cannot open queue.\n"); - return NULL; - } + //Queue ID + int mid = openQueue(); msgrcv(mid, &message, sizeof(message.msgText), mapperID, 0); + /*IMPLEMENT END AND ACK SOON*/ // if (strcmp("END", message.msgText)) { // struct msgBuffer ACK = {mapperID, "ACK"}; // msgsnd(mid, &ACK, MSGSIZE, 0); @@ -24,16 +28,8 @@ char *getChunkData(int mapperID) { // sends chunks of size 1024 to the mappers in RR fashion void sendChunkData(char *inputFile, int nMappers) { struct msgBuffer message; - int msgid; - //Hopefully this works - //TODO: Make sure this value matches the other Qkey - key_t Qkey = ftok("4061 Project 2 SS", 'S'); // open message queue - msgid = msgget(Qkey, 0666 | IPC_CREAT); - if (msgid < 0) { - perror("Cannot open queue.\n"); - exit(-1); - } + int msgid = openQueue(); // message.msgText = 1; FILE *fptr = fopen(inputFile, "r"); @@ -48,7 +44,7 @@ void sendChunkData(char *inputFile, int nMappers) { msgsnd(msgid, &message, 11, 0); } - for (long i = 1; i < nMappers; i++) { + for (int i = 1; i < nMappers; i++) { struct msgBuffer END = {i, "END"}; msgsnd(msgid, &END, MSGSIZE, 0); @@ -71,9 +67,15 @@ int hashFunction(char* Qkey, int reducers){ } int getInterData(char *Qkey, int reducerID) { + //make sure it work. + key_t Qkey = ftok("4061 Project 2 SS", 'S'); + } void shuffle(int nMappers, int nReducers) { + //Once again, MAKE SURE THIS WORKS PROPERLY! + key_t Qkey = ftok("4061 Project 2 SS", 'S'); + } // check if the character is valid for a word |