libaegis/lock.h

Go to the documentation of this file.

//
//      aegis - project change supervisor
//      Copyright (C) 1991-1993, 1996, 2001, 2002, 2004-2008 Peter Miller
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; either version 3 of the License, or
//      (at your option) any later version.
//
//      This program 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 General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef LOCK_H
#define LOCK_H

#include <common/main.h>

struct string_ty;

typedef void (*lock_callback_ty)(void *);

void lock_prepare_gstate(lock_callback_ty, void *);
void lock_prepare_pstate(struct string_ty *project_name,
    lock_callback_ty, void *);
void lock_prepare_ustate(int uid, lock_callback_ty, void *);
void lock_prepare_ustate_all(lock_callback_ty, void *);
void lock_prepare_cstate(struct string_ty *project_name, long change_number,
    lock_callback_ty, void *);
void lock_take(void);
void lock_release(void);
long lock_magic(void);
void lock_prepare_baseline_read(struct string_ty *project_name,
    lock_callback_ty, void *);
void lock_prepare_baseline_write(struct string_ty *project_name,
    lock_callback_ty, void *);
void lock_prepare_history(struct string_ty *project_name, lock_callback_ty,
    void *);

enum lock_walk_name
{
    lock_walk_name_master,
    lock_walk_name_gstate,
    lock_walk_name_pstate,
    lock_walk_name_cstate,
    lock_walk_name_baseline,
    lock_walk_name_baseline_priority,
    lock_walk_name_history,
    lock_walk_name_ustate,
    lock_walk_name_unknown
};

enum lock_walk_type
{
    lock_walk_type_shared,
    lock_walk_type_exclusive,
    lock_walk_type_unknown
};

struct lock_walk_found
{
    lock_walk_name  name;
    lock_walk_type  type;
    long            subset;
    long            address;
    int             pid;
    int             pid_is_local;
};

typedef void (*lock_walk_callback)(lock_walk_found *);

void lock_walk(lock_walk_callback);
void lock_release_child(void);

void lock_quitter(void);

bool lock_active(void);


#endif // LOCK_H

---