/*
 * Wine server threads
 *
 * Copyright (C) 1998 Alexandre Julliard
 */

#ifndef __WINE_SERVER_THREAD_H
#define __WINE_SERVER_THREAD_H

#ifndef __WINE_SERVER__
#error This file can only be used in the Wine server
#endif

#include "server/object.h"

/* thread structure */

struct process;
struct thread_wait;
struct thread_apc;
struct mutex;

enum run_state { STARTING, RUNNING, TERMINATED };

struct thread
{
    struct object       obj;       /* object header */
    struct thread      *next;      /* system-wide thread list */
    struct thread      *prev;
    struct thread      *proc_next; /* per-process thread list */
    struct thread      *proc_prev;
    struct process     *process;
    struct mutex       *mutex;     /* list of currently owned mutexes */
    struct thread_wait *wait;      /* current wait condition if sleeping */
    struct thread_apc  *apc;       /* list of async procedure calls */
    int                 apc_count; /* number of outstanding APCs */
    int                 error;     /* current error code */
    enum run_state      state;     /* running state */
    int                 exit_code; /* thread exit code */
    int                 client_fd; /* client fd for socket communications */
    int                 unix_pid;  /* Unix pid of client */
    int                 priority;  /* priority level */
    int                 affinity;  /* affinity mask */
    int                 suspend;   /* suspend count */
    enum request        last_req;  /* last request received (for debugging) */
};

extern struct thread *current;

/* thread functions */

extern void create_initial_thread( int fd );
extern struct thread *create_thread( int fd, void *pid, int suspend, int inherit, int *handle );
extern struct thread *get_thread_from_id( void *id );
extern struct thread *get_thread_from_handle( int handle, unsigned int access );
extern void get_thread_info( struct thread *thread,
                             struct get_thread_info_reply *reply );
extern void set_thread_info( struct thread *thread,
                             struct set_thread_info_request *req );
extern int suspend_thread( struct thread *thread );
extern int resume_thread( struct thread *thread );
extern void suspend_all_threads( void );
extern void resume_all_threads( void );
extern int send_reply( struct thread *thread, int pass_fd,
                       int n, ... /* arg_1, len_1, ..., arg_n, len_n */ );
extern int add_queue( struct object *obj, struct wait_queue_entry *entry );
extern void remove_queue( struct object *obj, struct wait_queue_entry *entry );
extern int thread_queue_apc( struct thread *thread, void *func, void *param );
extern void kill_thread( struct thread *thread, int exit_code );
extern void thread_killed( struct thread *thread, int exit_code );
extern void thread_timeout(void);
extern void sleep_on( struct thread *thread, int count, int *handles,
                      int flags, int timeout );
extern void wake_up( struct object *obj, int max );

#define GET_ERROR()     (current->error)
#define SET_ERROR(err)  (current->error = (err))
#define CLEAR_ERROR()   (current->error = 0)

#endif  /* __WINE_SERVER_THREAD_H */