1 files changed, 47 insertions, 0 deletions
diff --git a/kernel/include/thread.h b/kernel/include/thread.h
new file mode 100644
index 0000000..03277a2
--- /dev/null
+++ b/kernel/include/thread.h
@@ -0,0 +1,47 @@
+#pragma once
+
+#include <sys.h>
+#include <paging.h>
+#include <region.h>
+
+#define T_STATE_RUNNING		1
+#define T_STATE_FINISHED	2
+#define T_STATE_WAITING		3
+
+#define KPROC_STACK_SIZE 0x8000	// 8Kb
+
+#define TASK_SWITCH_FREQUENCY	100		// in herz
+
+typedef struct saved_context {
+	uint32_t *esp;
+	void (*eip)();
+} saved_context_t;
+
+typedef struct thread {
+	saved_context_t ctx;
+	pagedir_t *current_pd_d;
+
+	uint32_t state;
+	void* result;
+	bool has_result;
+
+	region_info_t *stack_region;
+
+	void* more_data;
+
+	struct thread *next_in_queue;
+} thread_t;
+
+typedef void (*entry_t)(void*);
+
+void threading_setup(entry_t cont, void* data);		// never returns
+thread_t *new_thread(entry_t entry);	// thread is PAUSED, and must be resume_thread_with_result'ed
+
+extern thread_t *current_thread;
+
+void yield();
+void* wait_for_result();
+
+void resume_thread_with_result(thread_t *thread, void* data, bool run_at_once);
+
+/* vim: set ts=4 sw=4 tw=0 noet :*/