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/*
* Wine server threads
*
* Copyright (C) 1998 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef __WINE_SERVER_THREAD_H
#define __WINE_SERVER_THREAD_H
#include "object.h"
/* thread structure */
struct process;
struct thread_wait;
struct thread_apc;
struct debug_ctx;
struct debug_event;
struct msg_queue;
enum run_state
{
RUNNING, /* running normally */
TERMINATED /* terminated */
};
/* descriptor for fds currently in flight from client to server */
struct inflight_fd
{
int client; /* fd on the client side (or -1 if entry is free) */
int server; /* fd on the server side */
};
#define MAX_INFLIGHT_FDS 16 /* max number of fds in flight per thread */
struct thread
{
struct object obj; /* object header */
struct list entry; /* entry in system-wide thread list */
struct list proc_entry; /* entry in per-process thread list */
struct process *process;
thread_id_t id; /* thread id */
struct list mutex_list; /* list of currently owned mutexes */
struct debug_ctx *debug_ctx; /* debugger context if this thread is a debugger */
struct debug_event *debug_event; /* debug event being sent to debugger */
int debug_break; /* debug breakpoint pending? */
struct msg_queue *queue; /* message queue */
struct thread_wait *wait; /* current wait condition if sleeping */
struct list system_apc; /* queue of system async procedure calls */
struct list user_apc; /* queue of user async procedure calls */
struct inflight_fd inflight[MAX_INFLIGHT_FDS]; /* fds currently in flight */
unsigned int error; /* current error code */
union generic_request req; /* current request */
void *req_data; /* variable-size data for request */
unsigned int req_toread; /* amount of data still to read in request */
void *reply_data; /* variable-size data for reply */
unsigned int reply_size; /* size of reply data */
unsigned int reply_towrite; /* amount of data still to write in reply */
struct fd *request_fd; /* fd for receiving client requests */
struct fd *reply_fd; /* fd to send a reply to a client */
struct fd *wait_fd; /* fd to use to wake a sleeping client */
enum run_state state; /* running state */
int exit_code; /* thread exit code */
int unix_pid; /* Unix pid of client */
int unix_tid; /* Unix tid of client */
context_t *context; /* current context if in an exception handler */
context_t *suspend_context; /* current context if suspended */
client_ptr_t teb; /* TEB address (in client address space) */
affinity_t affinity; /* affinity mask */
int priority; /* priority level */
int suspend; /* suspend count */
obj_handle_t desktop; /* desktop handle */
int desktop_users; /* number of objects using the thread desktop */
timeout_t creation_time; /* Thread creation time */
timeout_t exit_time; /* Thread exit time */
struct token *token; /* security token associated with this thread */
};
struct thread_snapshot
{
struct thread *thread; /* thread ptr */
int count; /* thread refcount */
int priority; /* priority class */
};
extern struct thread *current;
/* thread functions */
extern struct thread *create_thread( int fd, struct process *process );
extern struct thread *get_thread_from_id( thread_id_t id );
extern struct thread *get_thread_from_handle( obj_handle_t handle, unsigned int access );
extern struct thread *get_thread_from_tid( int tid );
extern struct thread *get_thread_from_pid( int pid );
extern void stop_thread( struct thread *thread );
extern void stop_thread_if_suspended( struct thread *thread );
extern int wake_thread( struct thread *thread );
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 void kill_thread( struct thread *thread, int violent_death );
extern void break_thread( struct thread *thread );
extern void wake_up( struct object *obj, int max );
extern int thread_queue_apc( struct thread *thread, struct object *owner, const apc_call_t *call_data );
extern void thread_cancel_apc( struct thread *thread, struct object *owner, enum apc_type type );
extern int thread_add_inflight_fd( struct thread *thread, int client, int server );
extern int thread_get_inflight_fd( struct thread *thread, int client );
extern struct thread_snapshot *thread_snap( int *count );
extern struct token *thread_get_impersonation_token( struct thread *thread );
extern int set_thread_affinity( struct thread *thread, affinity_t affinity );
/* ptrace functions */
extern void sigchld_callback(void);
extern void get_thread_context( struct thread *thread, context_t *context, unsigned int flags );
extern void set_thread_context( struct thread *thread, const context_t *context, unsigned int flags );
extern int send_thread_signal( struct thread *thread, int sig );
extern void get_selector_entry( struct thread *thread, int entry, unsigned int *base,
unsigned int *limit, unsigned char *flags );
extern unsigned int global_error; /* global error code for when no thread is current */
static inline unsigned int get_error(void) { return current ? current->error : global_error; }
static inline void set_error( unsigned int err ) { global_error = err; if (current) current->error = err; }
static inline void clear_error(void) { set_error(0); }
static inline void set_win32_error( unsigned int err ) { set_error( 0xc0010000 | err ); }
static inline thread_id_t get_thread_id( struct thread *thread ) { return thread->id; }
#endif /* __WINE_SERVER_THREAD_H */
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