diff options
Diffstat (limited to 'P2')
| -rw-r--r-- | P2/include/utils.h | 4 | ||||
| -rw-r--r-- | P2/lib/utils.c | 26 | ||||
| -rw-r--r-- | P2/src/mapreduce.c | 3 |
3 files changed, 12 insertions, 21 deletions
diff --git a/P2/include/utils.h b/P2/include/utils.h index 6fa4fa8..4f82435 100644 --- a/P2/include/utils.h +++ b/P2/include/utils.h @@ -24,8 +24,8 @@ struct msgBuffer { //Open Queue as a function because writing this once is probably better than four times. //Hopefully it works properly. -int openQueue(); -void closeQueue(); +int openQueue(char* path); +int closeQueue(int id); // mapper side int validChar(char c); diff --git a/P2/lib/utils.c b/P2/lib/utils.c index 56bd3cc..a565717 100644 --- a/P2/lib/utils.c +++ b/P2/lib/utils.c @@ -1,20 +1,10 @@ #include "utils.h" -int openQueue() { - int id = msgget(ftok("4061 Project 2 SS", 'S'), 0666 | IPC_CREAT); - if (id < 0) { - perror("Cannot open queue.\n"); - return -1; - } - return id; +int openQueue(char* path) { + return msgget(ftok(path, 253), 0666 | IPC_CREAT); } -void closeQueue() { - int msgid = msgget(ftok("4061 Project 2 SS", 'S'), 0666); - if (msgid < 0) { - perror("Cannot open queue. It may already exist.\n"); - exit(-1); - } - msgctl(msgid, IPC_RMID, NULL); +int closeQueue(int id) { + return msgctl(id, IPC_RMID, NULL); } char *getChunkData(int mapperID) { @@ -22,7 +12,7 @@ char *getChunkData(int mapperID) { //Message struct msgBuffer message; //Queue ID - int mid = openQueue(); + int mid = openQueue("map"); msgrcv(mid, &message, sizeof(message.msgText), mapperID, 0); if (strncmp("END", message.msgText, 3)) { return NULL; @@ -36,7 +26,7 @@ void sendChunkData(char *inputFile, int nMappers) { printf("SENDING CHUNK DATA\n"); struct msgBuffer message; // open message queue - int msgid = openQueue(); + int msgid = openQueue("map"); int map = 1; // message.msgText = 1; int fd = open(inputFile, O_RDONLY); @@ -88,7 +78,7 @@ int hashFunction(char* Qkey, int reducers){ int getInterData(char *Qkey, int reducerID) { struct msgBuffer message; //make sure it work. - int id = openQueue(); + int id = openQueue("reduce"); msgrcv(id, &message, chunkSize, reducerID, 0); Qkey = message.msgText; return strncmp("END", message.msgText, 3); @@ -103,7 +93,7 @@ int getInterData(char *Qkey, int reducerID) { void shuffle(int nMappers, int nReducers) { struct msgBuffer message; //Once again, MAKE SURE THIS WORKS PROPERLY! - int id = openQueue(); + int id = openQueue("reduce"); for (int i = 1; i <= nMappers; i++) { //Extra for loop traversing directory //TODO: Actually traverse directory diff --git a/P2/src/mapreduce.c b/P2/src/mapreduce.c index 290c1c5..7f5e8c4 100644 --- a/P2/src/mapreduce.c +++ b/P2/src/mapreduce.c @@ -77,6 +77,7 @@ int main(int argc, char *argv[]) { // wait for all children to complete execution while (wait(&status) > 0); - closeQueue(); + closeQueue(openQueue("map")); + closeQueue(openQueue("reduce")); return 0; }
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