codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * pidfile.h4 *	  Declarations describing the data directory lock file (postmaster.pid)5 *6 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group7 * Portions Copyright (c) 1994, Regents of the University of California8 *9 * src/include/utils/pidfile.h10 *11 *-------------------------------------------------------------------------12 */13#ifndef UTILS_PIDFILE_H14#define UTILS_PIDFILE_H15 16/*17 * As of Postgres 10, the contents of the data-directory lock file are:18 *19 * line #20 *		1	postmaster PID (or negative of a standalone backend's PID)21 *		2	data directory path22 *		3	postmaster start timestamp (time_t representation)23 *		4	port number24 *		5	first Unix socket directory path (empty if none)25 *		6	first listen_address (IP address or "*"; empty if no TCP port)26 *		7	shared memory key (empty on Windows)27 *		8	postmaster status (see values below)28 *29 * Lines 6 and up are added via AddToDataDirLockFile() after initial file30 * creation; also, line 5 is initially empty and is changed after the first31 * Unix socket is opened.  Onlookers should not assume that lines 4 and up32 * are filled in any particular order.33 *34 * Socket lock file(s), if used, have the same contents as lines 1-5, with35 * line 5 being their own directory.36 */37#define LOCK_FILE_LINE_PID			138#define LOCK_FILE_LINE_DATA_DIR		239#define LOCK_FILE_LINE_START_TIME	340#define LOCK_FILE_LINE_PORT			441#define LOCK_FILE_LINE_SOCKET_DIR	542#define LOCK_FILE_LINE_LISTEN_ADDR	643#define LOCK_FILE_LINE_SHMEM_KEY	744#define LOCK_FILE_LINE_PM_STATUS	845 46/*47 * The PM_STATUS line may contain one of these values.  All these strings48 * must be the same length, per comments for AddToDataDirLockFile().49 * We pad with spaces as needed to make that true.50 */51#define PM_STATUS_STARTING		"starting"	/* still starting up */52#define PM_STATUS_STOPPING		"stopping"	/* in shutdown sequence */53#define PM_STATUS_READY			"ready   "	/* ready for connections */54#define PM_STATUS_STANDBY		"standby "	/* up, won't accept connections */55 56#endif							/* UTILS_PIDFILE_H */57