Semaphores working

Semaphore.c

@@ -1,12 +1,19 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#define SEM_LIMIT 100
 
 typedef struct sem_t
 {
-    ;
+    pthread_mutex_t mutex;
+    pthread_cond_t condition;
+    int count;
 } sem_t;
 
-void* ThreadOne(void* voidPass);
+void* ThreadA(void* voidPass);
-void* ThreadTwo(void* voidPass);
+void* ThreadB(void* voidPass);
+void sem_init(sem_t* semaphore, int pshared, unsigned int value);
 void sem_post(sem_t* semaphore);
 void sem_wait(sem_t* semaphore);
 
@@ -15,11 +22,18 @@ sem_t aArrived, bArrived;
 
 int main(void)
 {
+    pthread_t thread1, thread2;
+    sem_init(&aArrived, 0, 1);
+    sem_init(&bArrived, 0, 1);
+    pthread_create(&thread1, NULL, ThreadA, NULL);
+    pthread_create(&thread2, NULL, ThreadB, NULL);
+    pthread_join(thread1, NULL);
+    pthread_join(thread2, NULL);
     return 0;
 }
 
 //  Thread A for testing multithread
-void* ThreadOne(void* voidPass)
+void* ThreadA(void* voidPass)
 {
     printf("a1\n");
     sem_post(&aArrived);
@@ -28,10 +42,42 @@ void* ThreadOne(void* voidPass)
 }
 
 //  Thread B for testing multithread
-void* ThreadTwo(void* voidPass)
+void* ThreadB(void* voidPass)
 {
     printf("b1\n");
     sem_post(&bArrived);
     sem_wait(&aArrived);
     printf("b2\n");
 }
+
+//  Dummy function for recreation purposes
+void sem_init(sem_t* semaphore, int pshared, unsigned int value)
+{
+    /* Faked pshared to keep with original */
+    /* Faked value to keep with original */
+    pthread_cond_init(&semaphore->condition, NULL);
+    pthread_mutex_init(&semaphore->mutex, NULL);
+    semaphore->count = 0;
+}
+
+//  Unlocks a thread to be run
+void sem_post(sem_t* semaphore)
+{
+    semaphore->count++;
+    if (semaphore->count <= 0)
+    {
+        pthread_mutex_unlock(&semaphore->mutex);
+        pthread_cond_signal(&semaphore->condition);
+    }
+}
+
+//  Locks a thread
+void sem_wait(sem_t* semaphore)
+{
+    semaphore->count--;
+    if (semaphore->count < 0)
+    {
+        pthread_mutex_lock(&semaphore->mutex);
+        pthread_cond_wait(&semaphore->condition, &semaphore->mutex);
+    }
+}