feat: Massive OS expansion with IPC, Sound & TTS, Block layer, FAT32/ext2/sysfs, Signals, Syscalls, Modules, Drivers & 50+ LazyBox applets

kernel/timer.c

@@ -0,0 +1,54 @@
+#include <kernel/timer.h>
+#include <arch/x86_64/pit.h>
+#include <kernel/printk.h>
+
+static timer_list_t* timer_head = NULL;
+
+void timer_wheel_init(void) {
+    timer_head = NULL;
+    printk(KERN_INFO "TIMER: Kernel High-Resolution Software Timer Wheel initialized\n");
+}
+
+void timer_add(timer_list_t* timer) {
+    if (!timer) return;
+    timer->active = true;
+    timer->next = timer_head;
+    timer_head = timer;
+}
+
+void timer_mod(timer_list_t* timer, uint64_t expires) {
+    if (!timer) return;
+    timer->expires = expires;
+    if (!timer->active) timer_add(timer);
+}
+
+void timer_del(timer_list_t* timer) {
+    if (!timer || !timer_head) return;
+    timer->active = false;
+
+    if (timer_head == timer) {
+        timer_head = timer->next;
+        return;
+    }
+
+    timer_list_t* curr = timer_head;
+    while (curr->next) {
+        if (curr->next == timer) {
+            curr->next = timer->next;
+            return;
+        }
+        curr = curr->next;
+    }
+}
+
+void timer_tick(void) {
+    uint64_t now = pit_get_ticks();
+    timer_list_t* curr = timer_head;
+    while (curr) {
+        if (curr->active && curr->expires <= now) {
+            curr->active = false;
+            if (curr->function) curr->function(curr->data);
+        }
+        curr = curr->next;
+    }
+}