/** * mds — A micro-display server * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) * * 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 MDS_MDS_RESPAWN_H #define MDS_MDS_RESPAWN_H #include "mds-base.h" #include <sys/types.h> #include <time.h> /** * The server has not started yet */ #define UNBORN 0 /** * The server is up and running */ #define ALIVE 1 /** * The server has crashed and will be respawn momentarily */ #define DEAD 2 /** * The server crashed too fast, it will only respawn if SIGUSR2 is received */ #define DEAD_AND_BURIED 3 /** * The server has exited successfully, it will never be respawn again */ #define CREMATED 4 /** * Check that a state is a value state * * @param VALUE:int The state * @return :int Whether the state is value */ #define validate_state(VALUE) ((UNBORN <= VALUE) && (VALUE <= CREMATED)) /** * The state and identifier of a server */ typedef struct server_state { /** * The server's process ID */ pid_t pid; /** * The server's state */ int state; /** * The time (monotonic) the server started */ struct timespec started; } server_state_t; #endif