Add kernel worker threads for handling various tasks (eg. interrupts)

2 files changed, 18 insertions, 2 deletions

diff --git a/src/kernel/include/thread.h b/src/kernel/include/thread.h
index c8072c9..8ffbb3d 100644
--- a/src/kernel/include/thread.h
+++ b/src/kernel/include/thread.h
@@ -11,7 +11,7 @@
 
 #define KPROC_STACK_SIZE 0x8000	// 8Kb
 
-#define TASK_SWITCH_FREQUENCY	50		// in herz
+#define TASK_SWITCH_FREQUENCY	100		// in herz
 
 typedef struct saved_context {
 	uint32_t *esp;
@@ -43,8 +43,9 @@ extern thread_t *current_thread;
 void yield();
 void pause();
 void exit();
+void usleep(int usecs);
 
-void resume_thread(thread_t *thread, bool run_at_once);
+bool resume_thread(thread_t *thread, bool run_at_once); // true if thrad was paused, false if was running
 void kill_thread(thread_t *thread);
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/kernel/include/worker.h b/src/kernel/include/worker.h
new file mode 100644
index 0000000..ec76dc4
--- /dev/null
+++ b/src/kernel/include/worker.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <thread.h>
+#include <mutex.h>
+
+void start_workers(int num_worker_threads);		// default : one is enough
+
+bool worker_push(entry_t fun, void* data);
+bool worker_push_in(int usecs, entry_t fun, void* data);
+
+void worker_notify_time(int usecs);		// time source : PIT IRQ0
+
+uint64_t worker_get_time();				// usecs since we started some worker threads, ie since kernel startup
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/