150 lines
6.6 KiB
C
150 lines
6.6 KiB
C
/*
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* Wine server threads
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*
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* Copyright (C) 1998 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __WINE_SERVER_THREAD_H
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#define __WINE_SERVER_THREAD_H
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#include "object.h"
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/* thread structure */
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struct process;
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struct thread_wait;
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struct thread_apc;
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struct mutex;
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struct debug_ctx;
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struct debug_event;
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struct msg_queue;
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struct hook_table;
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enum run_state
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{
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RUNNING, /* running normally */
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TERMINATED /* terminated */
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};
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struct apc_queue
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{
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struct thread_apc *head;
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struct thread_apc *tail;
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};
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/* descriptor for fds currently in flight from client to server */
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struct inflight_fd
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{
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int client; /* fd on the client side (or -1 if entry is free) */
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int server; /* fd on the server side */
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};
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#define MAX_INFLIGHT_FDS 16 /* max number of fds in flight per thread */
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struct thread
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{
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struct object obj; /* object header */
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struct thread *next; /* system-wide thread list */
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struct thread *prev;
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struct thread *proc_next; /* per-process thread list */
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struct thread *proc_prev;
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struct process *process;
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thread_id_t id; /* thread id */
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struct mutex *mutex; /* list of currently owned mutexes */
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struct debug_ctx *debug_ctx; /* debugger context if this thread is a debugger */
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struct debug_event *debug_event; /* debug event being sent to debugger */
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struct msg_queue *queue; /* message queue */
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struct hook_table *hooks; /* hooks table */
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struct thread_wait *wait; /* current wait condition if sleeping */
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struct apc_queue system_apc; /* queue of system async procedure calls */
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struct apc_queue user_apc; /* queue of user async procedure calls */
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struct inflight_fd inflight[MAX_INFLIGHT_FDS]; /* fds currently in flight */
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unsigned int error; /* current error code */
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union generic_request req; /* current request */
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void *req_data; /* variable-size data for request */
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unsigned int req_toread; /* amount of data still to read in request */
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void *reply_data; /* variable-size data for reply */
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unsigned int reply_size; /* size of reply data */
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unsigned int reply_towrite; /* amount of data still to write in reply */
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struct fd *request_fd; /* fd for receiving client requests */
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struct fd *reply_fd; /* fd to send a reply to a client */
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struct fd *wait_fd; /* fd to use to wake a sleeping client */
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enum run_state state; /* running state */
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int attached; /* is thread attached with ptrace? */
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int exit_code; /* thread exit code */
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int unix_pid; /* Unix pid of client */
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CONTEXT *context; /* current context if in an exception handler */
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void *teb; /* TEB address (in client address space) */
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int priority; /* priority level */
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int affinity; /* affinity mask */
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int suspend; /* suspend count */
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time_t creation_time; /* Thread creation time */
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time_t exit_time; /* Thread exit time */
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};
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struct thread_snapshot
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{
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struct thread *thread; /* thread ptr */
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int count; /* thread refcount */
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int priority; /* priority class */
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};
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extern struct thread *current;
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/* thread functions */
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extern struct thread *create_thread( int fd, struct process *process );
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extern struct thread *get_thread_from_id( thread_id_t id );
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extern struct thread *get_thread_from_handle( obj_handle_t handle, unsigned int access );
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extern struct thread *get_thread_from_pid( int pid );
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extern void stop_thread( struct thread *thread );
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extern int wake_thread( struct thread *thread );
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extern int add_queue( struct object *obj, struct wait_queue_entry *entry );
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extern void remove_queue( struct object *obj, struct wait_queue_entry *entry );
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extern void kill_thread( struct thread *thread, int violent_death );
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extern void wake_up( struct object *obj, int max );
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extern int thread_queue_apc( struct thread *thread, struct object *owner, void *func,
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enum apc_type type, int system, int nb_args, ... );
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extern void thread_cancel_apc( struct thread *thread, struct object *owner, int system );
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extern int thread_add_inflight_fd( struct thread *thread, int client, int server );
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extern int thread_get_inflight_fd( struct thread *thread, int client );
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extern struct thread_snapshot *thread_snap( int *count );
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/* ptrace functions */
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extern void sigchld_handler();
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extern int get_ptrace_pid( struct thread *thread );
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extern void detach_thread( struct thread *thread, int sig );
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extern int attach_process( struct process *process );
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extern void detach_process( struct process *process );
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extern int suspend_for_ptrace( struct thread *thread );
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extern void resume_after_ptrace( struct thread *thread );
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extern int read_thread_int( struct thread *thread, const int *addr, int *data );
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extern int write_thread_int( struct thread *thread, int *addr, int data, unsigned int mask );
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extern void *get_thread_ip( struct thread *thread );
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extern int get_thread_single_step( struct thread *thread );
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extern int send_thread_signal( struct thread *thread, int sig );
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extern unsigned int global_error; /* global error code for when no thread is current */
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static inline unsigned int get_error(void) { return current ? current->error : global_error; }
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static inline void set_error( unsigned int err ) { global_error = err; if (current) current->error = err; }
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static inline void clear_error(void) { set_error(0); }
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static inline thread_id_t get_thread_id( struct thread *thread ) { return thread->id; }
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#endif /* __WINE_SERVER_THREAD_H */
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