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