sched: split sched.h into separate header files

include/kernel/task.h

@@ -0,0 +1,75 @@
+#ifndef KERNEL_TASK_H_
+#define KERNEL_TASK_H_
+
+#include <kernel/handle.h>
+#include <kernel/object.h>
+#include <kernel/pmap.h>
+
+#define TASK_NAME_MAX 64
+#define PID_MAX       99999
+
+struct channel;
+
+enum task_state {
+	TASK_RUNNING,
+	TASK_STOPPED,
+};
+
+struct task {
+	struct object t_base;
+
+	struct task *t_parent;
+	long t_id;
+	enum task_state t_state;
+	char t_name[TASK_NAME_MAX];
+
+	pmap_t t_pmap;
+	struct vm_region *t_address_space;
+	spin_lock_t t_handles_lock;
+	struct handle_table *t_handles;
+	struct btree b_channels;
+
+	struct btree_node t_tasklist;
+	struct queue_entry t_child_entry;
+
+	size_t t_next_thread_id;
+	struct queue t_threads;
+	struct queue t_children;
+};
+
+extern struct task *task_alloc(void);
+extern struct task *task_cast(struct object *obj);
+extern struct task *task_create(const char *name, size_t name_len);
+static inline struct task *task_ref(struct task *task)
+{
+	return OBJECT_CAST(struct task, t_base, object_ref(&task->t_base));
+}
+static inline void task_unref(struct task *task)
+{
+	object_unref(&task->t_base);
+}
+extern kern_status_t task_add_child(struct task *parent, struct task *child);
+extern kern_status_t task_add_channel(
+	struct task *task,
+	struct channel *channel,
+	unsigned int id);
+extern struct channel *task_get_channel(struct task *task, unsigned int id);
+extern struct task *task_from_tid(tid_t id);
+extern kern_status_t task_open_handle(
+	struct task *task,
+	struct object *obj,
+	handle_flags_t flags,
+	kern_handle_t *out);
+extern kern_status_t task_resolve_handle(
+	struct task *task,
+	kern_handle_t handle,
+	struct object **out_obj,
+	handle_flags_t *out_flags);
+extern kern_status_t task_close_handle(struct task *task, kern_handle_t handle);
+extern struct thread *task_create_thread(struct task *parent);
+extern struct task *kernel_task(void);
+extern struct task *idle_task(void);
+
+DEFINE_OBJECT_LOCK_FUNCTION(task, t_base)
+
+#endif