/* * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 mutex; struct debug_ctx; struct debug_event; struct startup_info; struct msg_queue; enum run_state { RUNNING, /* running normally */ TERMINATED /* terminated */ }; struct apc_queue { struct thread_apc *head; struct thread_apc *tail; }; /* 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 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 debug_ctx *debug_ctx; /* debugger context if this thread is a debugger */ struct debug_event *debug_event; /* debug event being sent to debugger */ struct msg_queue *queue; /* message queue */ struct startup_info *info; /* startup info for child process */ struct thread_wait *wait; /* current wait condition if sleeping */ struct apc_queue system_apc; /* queue of system async procedure calls */ struct apc_queue 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 */ int request_fd; /* fd for receiving client requests */ int reply_fd; /* fd to send a reply to a client */ int wait_fd; /* fd to use to wake a sleeping client */ enum run_state state; /* running state */ int attached; /* is thread attached with ptrace? */ int exit_code; /* thread exit code */ int unix_pid; /* Unix pid of client */ CONTEXT *context; /* current context if in an exception handler */ void *teb; /* TEB address (in client address space) */ int priority; /* priority level */ int affinity; /* affinity mask */ int suspend; /* suspend count */ }; 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( void *id ); extern struct thread *get_thread_from_handle( handle_t handle, unsigned int access ); extern struct thread *get_thread_from_pid( int pid ); extern int suspend_thread( struct thread *thread, int check_limit ); extern int resume_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 wake_up( struct object *obj, int max ); extern int thread_queue_apc( struct thread *thread, struct object *owner, void *func, enum apc_type type, int system, int nb_args, ... ); extern void thread_cancel_apc( struct thread *thread, struct object *owner, int system ); 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 ); /* ptrace functions */ extern void sigchld_handler(); extern void wait4_thread( struct thread *thread, int signal ); extern void stop_thread( struct thread *thread ); extern void continue_thread( struct thread *thread ); extern void detach_thread( struct thread *thread, int sig ); extern int suspend_for_ptrace( struct thread *thread ); extern int read_thread_int( struct thread *thread, const int *addr, int *data ); extern int write_thread_int( struct thread *thread, int *addr, int data, unsigned int mask ); extern void *get_thread_ip( struct thread *thread ); extern int get_thread_single_step( struct thread *thread ); 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 *get_thread_id( struct thread *thread ) { return thread; } #endif /* __WINE_SERVER_THREAD_H */