added C for threading

src/app.c

@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <memory.h>
+#include <libc.h>
+#include <pthread.h>
+#include <time.h>
+
+typedef struct {
+    uint32_t* state;
+    void* element;
+} EventArgs;
+
+extern void render(void* element, uint32_t state);
+extern void event(void* element, uint32_t* state);
+
+void sleep_ms(long milliseconds) {
+    struct timespec ts;
+    ts.tv_sec = milliseconds / 1000;
+    ts.tv_nsec = (milliseconds % 1000) * 1000000;
+    nanosleep(&ts, NULL);
+}
+
+void *event_checker(void *args)
+{
+    EventArgs* event_args = (EventArgs*)args;
+    while (1) {
+        if (event_args->state == 0) { return NULL; }
+        event(event_args->element, event_args->state);
+    }
+    return NULL;
+}
+
+boolean_t c_run(void* element)
+{
+    pthread_t thread;
+    uint32_t state = 2;
+    EventArgs event_args = { .element = element, .state = &state };
+
+    if (pthread_create(&thread, NULL, event_checker, &event_args) != 0) {
+        perror("Failed to create thread");
+    }
+
+    while (1)
+    {
+        if (state == 0) {
+            free(element);
+            return 0;
+        } else if (state == 1) {
+            free(element);
+            return 1;
+        }
+        render(element, state);
+        sleep_ms(200);
+    }
+}