Adjusted SharedStruct and reverted semaphores.

include/shared.h

@@ -8,8 +8,9 @@ typedef struct SharedStruct
 {
     int buffer[10];
     int count[10];
-    sem_t semConsumer;
-    sem_t semProducer;
+    sem_t mutex;
+    sem_t empty;
+    sem_t full;
 } SharedStruct;
 
 void SharedStructInit(SharedStruct* sharedMem);

src/consumer.c

@@ -4,7 +4,8 @@
 #include <unistd.h>
 #include "shared.h"
 
-void Consumer(SharedStruct* sharedMem);
+void StartConsumer(SharedStruct* sharedMem);
+void Consume(SharedStruct* sharedMem);
 void consume_item(int item, SharedStruct* sharedMem);
 int remove_item(SharedStruct* sharedMem);
 
@@ -17,30 +18,32 @@ int main(int argc, char* argv[])
     }
     int sharedID = StringToNumber(argv[1]);
     SharedStruct* sharedMem = shmat(sharedID, NULL, 0);
-    Consumer(sharedMem);
-    //  TODO: Fix buffer not printing correctly
+    StartConsumer(sharedMem);
     return 0;
 }
 
 //  Consumer main function
 //  TODO:   Add waiting for one consumer at a time
 //          Add ability to use shared memory
-void Consumer(SharedStruct* sharedMem)
+void StartConsumer(SharedStruct* sharedMem)
+{
+    for (int i = 0; i < 5; i++)
+    {
+        sem_wait(&sharedMem->full);
+        Consume(sharedMem);
+        sem_post(&sharedMem->empty);
+    }
+}
+
+void Consume(SharedStruct* sharedMem)
 {
     int consumeNum;
-    while (1)
-    {
-        sem_wait(&sharedMem->semConsumer);
-        // down(&full);
-        // down(&mutex);
-        consumeNum = remove_item(sharedMem);
-        printf("%d was consumed.\n", consumeNum);
-        // up(&mutex);
-        // up(&empty);
-        consume_item(consumeNum, sharedMem);
-        sem_post(&sharedMem->semProducer);
-        break;
-    }
+    sem_wait(&sharedMem->mutex);
+    consumeNum = remove_item(sharedMem);
+    consume_item(consumeNum, sharedMem);
+    printf("%d was consumed.\n", consumeNum);
+    sem_post(&sharedMem->mutex);
+    return;
 }
 
 //  Manage item taken from shared memory

src/producer.c

@@ -6,7 +6,8 @@
 #include "shared.h"
 
 int GetNextFreeSlot(SharedStruct* sharedMem);
-void Producer(SharedStruct* sharedMem);
+void StartProducer(SharedStruct* sharedMem);
+void Produce(SharedStruct* sharedMem);
 int produce_item(void);
 int insert_item(int item, SharedStruct* sharedMem);
 
@@ -21,8 +22,7 @@ int main(int argc, char* argv[])
     srandom((unsigned int) time(NULL));
     int sharedID = StringToNumber(argv[1]);
     SharedStruct* sharedMem = shmat(sharedID, NULL, 0);
-    Producer(sharedMem);
-    printf("Producer finished.\n");
+    StartProducer(sharedMem);
     return 0;
 }
 
@@ -43,31 +43,28 @@ int GetNextFreeSlot(SharedStruct* sharedMem)
 //  Producer main function
 //  TODO:   Add waiting for one producer at a time
 //          Add ability to use shared memory
-void Producer(SharedStruct* sharedMem)
+void StartProducer(SharedStruct* sharedMem)
 {
-    int insertNum;
     //  TODO: For testing purposes, revert max to 100
     for (int i = 0; i < 5; i++)
     {
-        sem_wait(&sharedMem->semProducer);
-        insertNum = produce_item();
-        printf("%d is inserted.\n", insertNum);
-        // sem_wait(&semProducer);
-        // down(&empty);
-        // down(&mutex);
-        // if (insert_item(insertNum, sharedMem) == 0)
-        insert_item(insertNum, sharedMem);
-        sem_post(&sharedMem->semConsumer);
-        // {
-        //     --i;
-        //     continue;
-        // }
-        // up(&mutex);
-        // up(&full);
-        break;
+        sem_wait(&sharedMem->empty);
+        Produce(sharedMem);
+        sem_post(&sharedMem->full);
     }
 }
 
+void Produce(SharedStruct* sharedMem)
+{
+    int insertNum;
+    sem_wait(&sharedMem->mutex);
+    insertNum = produce_item();
+    insert_item(insertNum, sharedMem);
+    printf("%d is inserted.\n", insertNum);
+    sem_post(&sharedMem->mutex);
+    return;
+}
+
 //  Generate a number between 0 and 9
 int produce_item(void)
 {

src/shared.c

@@ -8,8 +8,11 @@ void SharedStructInit(SharedStruct* sharedMem)
         sharedMem->buffer[i] = -1;
         sharedMem->count[i] = 0;
     }
-    sem_init(&sharedMem->semConsumer, 1, 1);
-    sem_init(&sharedMem->semProducer, 1, 1);
+    sem_init(&sharedMem->mutex, 1, 1);
+    sem_init(&sharedMem->empty, 1, 1);
+    sem_init(&sharedMem->full, 1, 1);
+    // sem_init(&sharedMem->semConsumer, 1, 1);
+    // sem_init(&sharedMem->semProducer, 1, 1);
 }
 
 int StringToNumber(char* argv)
@@ -17,4 +20,4 @@ int StringToNumber(char* argv)
     int splitAmount;
     sscanf(argv, "%d", &splitAmount);
     return splitAmount;
-}
+}