initial

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/debian
+{
+	"name": "Debian",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/base:bullseye"
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

README.md

@@ -1,7 +1,7 @@
-## cos331-hw3 ##
- 
-[![](https://gitea-actions.nicholaspease.com/actions/umaine-npease/cos331-hw3/badge?label=build&style=flat&branch=main)](https://gitea-actions.nicholaspease.com/latest-log?branch=main)
-[![](https://drone.nicholaspease.com/api/badges/umaine-npease/cos331-hw3/status.svg)](https://drone.nicholaspease.com/umaine-npease/cos331-hw3)
-[![](https://wakaapi.nicholaspease.com/api/badge/LAX18/interval:any/project:cos331-hw3)](https://wakaapi.nicholaspease.com/summary?interval=any&project=cos331-hw3)
-![](https://server1.nicholaspease.com/badges/cloc/npease/cos331-hw3.svg)
-<hr>
+## cos331-hw3 ##
+ 
+[![](https://gitea-actions.nicholaspease.com/actions/umaine-npease/cos331-hw3/badge?label=build&style=flat&branch=main)](https://gitea-actions.nicholaspease.com/latest-log?branch=main)
+[![](https://drone.nicholaspease.com/api/badges/umaine-npease/cos331-hw3/status.svg)](https://drone.nicholaspease.com/umaine-npease/cos331-hw3)
+[![](https://wakaapi.nicholaspease.com/api/badge/LAX18/interval:any/project:cos331-hw3)](https://wakaapi.nicholaspease.com/summary?interval=any&project=cos331-hw3)
+![](https://server1.nicholaspease.com/badges/cloc/npease/cos331-hw3.svg)
+<hr>

hw_files/pease-hw3-no-semaphore.c

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+// HW3 - COS331
+// Pease
+
+#include <stdlib.h>
+#include <pthread.h> 
+#include <unistd.h> 
+#include <fcntl.h> 
+#include <semaphore.h> 
+#include <sys/stat.h> 
+#include <stdio.h>
+
+// Globals
+unsigned int seed = 8;
+int random_array[1024][1024];
+int total_random[256];
+pthread_t ThreadID;
+
+// Struct
+struct threadArgVector {
+    int startRow;
+    int endRow;
+    int threadNum;
+};
+
+// Thread
+void *countNumsAndStore(void * arguments) {
+    // Format the passed args
+    struct threadArgVector *passedArgs = arguments;
+    int startRow = passedArgs->startRow;
+    int endRow = passedArgs->endRow;
+    int threadNum = passedArgs->threadNum;
+
+    // Initialize local array to 0
+    int localCount[256];
+    for (int i = 0; i < 256; i++) localCount[i] = 0;
+
+    // Do the counting math
+    for(int i = startRow; i < endRow; i++) {
+        for (int j = 0; j < 1024; j++) {
+            int value = random_array[i][j];
+            localCount[value]++;
+        }
+    }
+
+    // No semaphore used, so we directly update the global total array
+    for (int i = 0; i < 256; i++) total_random[i] += localCount[i];
+}
+
+// main
+int main(int argc, char *argv[])
+{
+    int threadCount = atoi(argv[1]);
+    srand(seed);
+
+    // Initialize the random array
+    for (int i = 0; i < 1024; i++) {
+        for (int j = 0; j < 1024; j++) {
+            random_array[i][j] = rand() % 256;
+        }
+    }
+
+    // Array of thread ID's
+    pthread_t threadIds[threadCount];
+
+    // Create the set number of threads
+    for (int i = 0; i < threadCount; i++) {
+        struct threadArgVector currThreadArgs = {
+            .startRow = (i * 1024) / threadCount,
+            .endRow = ((i + 1) * 1024) / threadCount,
+            .threadNum = i
+        };
+        int ret = pthread_create(&threadIds[i], NULL, countNumsAndStore, (void *) &currThreadArgs);
+    };
+
+    for (int i = 0; i < threadCount; i++) {
+        // Wait for each thread to finish
+        int ret = pthread_join(threadIds[i], NULL);
+    }
+
+    // Print the total count
+    printf("Total counts of each number:\n");
+    for (int i = 0; i < 256; i++) {
+        printf("%d: %d\n", i, total_random[i]);
+    }
+
+    return 0;
+}