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Name	Size	Permission
backendid.h	730 B	-rw-r--r--
barrier.h	6.6 KB	-rw-r--r--
block.h	3.21 KB	-rw-r--r--
buf.h	1.06 KB	-rw-r--r--
buf_internals.h	7.79 KB	-rw-r--r--
buffile.h	1.67 KB	-rw-r--r--
bufmgr.h	7.2 KB	-rw-r--r--
bufpage.h	12.91 KB	-rw-r--r--
copydir.h	561 B	-rw-r--r--
fd.h	3.56 KB	-rw-r--r--
freespace.h	1.23 KB	-rw-r--r--
fsm_internals.h	2.24 KB	-rw-r--r--
indexfsm.h	795 B	-rw-r--r--
ipc.h	2.54 KB	-rw-r--r--
item.h	469 B	-rw-r--r--
itemid.h	4.24 KB	-rw-r--r--
itemptr.h	3.72 KB	-rw-r--r--
large_object.h	2.89 KB	-rw-r--r--
latch.h	5.28 KB	-rw-r--r--
lmgr.h	3.22 KB	-rw-r--r--
lock.h	21.16 KB	-rw-r--r--
lwlock.h	3.58 KB	-rw-r--r--
off.h	1.58 KB	-rw-r--r--
pg_sema.h	2.41 KB	-rw-r--r--
pg_shmem.h	1.95 KB	-rw-r--r--
pmsignal.h	2.03 KB	-rw-r--r--
pos.h	1.56 KB	-rw-r--r--
predicate.h	2.56 KB	-rw-r--r--
predicate_internals.h	16.98 KB	-rw-r--r--
proc.h	9.58 KB	-rw-r--r--
procarray.h	2.96 KB	-rw-r--r--
procsignal.h	1.76 KB	-rw-r--r--
reinit.h	588 B	-rw-r--r--
relfilenode.h	4.31 KB	-rw-r--r--
s_lock.h	28 KB	-rw-r--r--
shmem.h	2.63 KB	-rw-r--r--
sinval.h	4.97 KB	-rw-r--r--
sinvaladt.h	1.49 KB	-rw-r--r--
smgr.h	5.67 KB	-rw-r--r--
spin.h	2.71 KB	-rw-r--r--
standby.h	3.97 KB	-rw-r--r--

Code Editor : ipc.h

/*-------------------------------------------------------------------------
 *
 * ipc.h
 *	  POSTGRES inter-process communication definitions.
 *
 * This file is misnamed, as it no longer has much of anything directly
 * to do with IPC.  The functionality here is concerned with managing
 * exit-time cleanup for either a postmaster or a backend.
 *
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/storage/ipc.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef IPC_H
#define IPC_H

typedef void (*pg_on_exit_callback) (int code, Datum arg);
typedef void (*shmem_startup_hook_type) (void);

/*----------
 * API for handling cleanup that must occur during either ereport(ERROR)
 * or ereport(FATAL) exits from a block of code.  (Typical examples are
 * undoing transient changes to shared-memory state.)
 *
 *		PG_ENSURE_ERROR_CLEANUP(cleanup_function, arg);
 *		{
 *			... code that might throw ereport(ERROR) or ereport(FATAL) ...
 *		}
 *		PG_END_ENSURE_ERROR_CLEANUP(cleanup_function, arg);
 *
 * where the cleanup code is in a function declared per pg_on_exit_callback.
 * The Datum value "arg" can carry any information the cleanup function
 * needs.
 *
 * This construct ensures that cleanup_function() will be called during
 * either ERROR or FATAL exits.  It will not be called on successful
 * exit from the controlled code.  (If you want it to happen then too,
 * call the function yourself from just after the construct.)
 *
 * Note: the macro arguments are multiply evaluated, so avoid side-effects.
 *----------
 */
#define PG_ENSURE_ERROR_CLEANUP(cleanup_function, arg)	\
	do { \
		on_shmem_exit(cleanup_function, arg); \
		PG_TRY()

#define PG_END_ENSURE_ERROR_CLEANUP(cleanup_function, arg)	\
		cancel_shmem_exit(cleanup_function, arg); \
		PG_CATCH(); \
		{ \
			cancel_shmem_exit(cleanup_function, arg); \
			cleanup_function (0, arg); \
			PG_RE_THROW(); \
		} \
		PG_END_TRY(); \
	} while (0)

/* ipc.c */
extern bool proc_exit_inprogress;

extern void proc_exit(int code);
extern void shmem_exit(int code);
extern void on_proc_exit(pg_on_exit_callback function, Datum arg);
extern void on_shmem_exit(pg_on_exit_callback function, Datum arg);
extern void cancel_shmem_exit(pg_on_exit_callback function, Datum arg);
extern void on_exit_reset(void);

/* ipci.c */
extern PGDLLIMPORT shmem_startup_hook_type shmem_startup_hook;

extern void CreateSharedMemoryAndSemaphores(bool makePrivate, int port);

#endif   /* IPC_H */

${this.title}

Code Editor : ipc.h