stuff

06-MemoryManager/testcases/tc12.c

@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include "memory_manager.h"
+
+#define MY_HEAP_SIZE 4096
+#define MUL_COUNT 1 
+
+int* results[MUL_COUNT];
+int ids[MUL_COUNT];
+
+int* heap_multiply(int a, int b)
+{
+	int* result = mymalloc_ff(sizeof(int));
+	if(result == NULL) {
+		printf("COULD NOT mymalloc_ff an int\n");
+		exit(EXIT_FAILURE);
+	}
+	*result = a * b;
+	return result;
+}
+
+void* thread_function(void* args)
+{
+	int* localId = mymalloc_ff(sizeof(int));
+	if(localId == NULL) {
+		printf("%lu could not allocate space for local ID\n", pthread_self());
+		exit(EXIT_FAILURE);
+	}
+	*localId = *(int*)args;
+	printf("%d -- Available Memory: %d, Alloc Memory: %d, Fragment Count: %d\n", *localId, get_remaining_space(), get_allocated_space(), get_fragment_count());
+	results[*localId] = heap_multiply(*localId, *localId + 2);
+	myfree(localId);
+	return NULL;
+}
+
+int main()
+{
+	pthread_t mythreads[MUL_COUNT];
+	char my_heap[MY_HEAP_SIZE];
+	mmInit(my_heap, MY_HEAP_SIZE);
+	
+	printf("TC12: pthreads allocate single integer and perform multiplication\n");
+
+	for(int i = 0; i < MUL_COUNT; i++) {
+		ids[i] = i;
+		if(pthread_create(&mythreads[i], NULL, thread_function, (void*)&ids[i]) == -1) {
+			printf("Could not create thread %d\n", i);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	for(int i = 0; i < MUL_COUNT; i++) {
+		pthread_join(mythreads[i], NULL);
+	}
+	
+	for(int i = 0; i < MUL_COUNT; i++) {
+		printf("%d * %d = %d\n", i, i+2, *results[i]);
+	}
+
+	for(int i = 0; i < MUL_COUNT; i++) {
+		myfree(results[i]);
+	}
+
+	printf("Total successful mallocs: %d\n", get_mymalloc_count());
+	mmDestroy();
+
+	return 0;
+}