veil_shmem.h File Reference

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Detailed Description

Define the basic veil shared memory structures.

     Author:       Marc Munro
     Copyright (c) 2005, 2006 Marc Munro
     License:      BSD
 $Id: veil_shmem.h,v 1.2 2006/11/01 00:08:55 bloodnok Exp $

Definition in file veil_shmem.h.

#include "utils/hsearch.h"
#include "storage/lwlock.h"

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Data Structures
struct	MemChunk
struct	MemContext
struct	Object
struct	ShmemCtl
struct	Int4Var
struct	Range
struct	Bitmap
struct	BitmapRef
struct	BitmapArray
struct	BitmapHash
struct	Int4Array
struct	VarEntry
struct	veil_variable_t
Defines
#define	VEIL_DATATYPES   1
#define	CHUNK_SIZE   8192
#define	MAX_ALLOWED_SHMEM   CHUNK_SIZE * 100
#define	HASH_KEYLEN   60
Enumerations
enum	ObjType {   OBJ_UNDEFINED = 0, OBJ_SHMEMCTL, OBJ_INT4, OBJ_RANGE,   OBJ_BITMAP, OBJ_BITMAP_ARRAY, OBJ_BITMAP_HASH, OBJ_BITMAP_REF,   OBJ_INT4_ARRAY, OBJ_UNDEFINED = 0, OBJ_SHMEMCTL, OBJ_INT4,   OBJ_RANGE, OBJ_BITMAP, OBJ_BITMAP_ARRAY, OBJ_BITMAP_HASH,   OBJ_BITMAP_REF, OBJ_INT4_ARRAY }

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Define Documentation

#define CHUNK_SIZE   8192

Chunks od shared memory are allocated in multiples of this size.

Definition at line 23 of file veil_shmem.h.

#define HASH_KEYLEN   60

The key length for veil hash types.

Definition at line 73 of file veil_shmem.h.

#define MAX_ALLOWED_SHMEM   CHUNK_SIZE * 100

Limits the total amount of memory available for veil shared variables.

Definition at line 29 of file veil_shmem.h.

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Enumeration Type Documentation

enum ObjType

Describes the type of an Object record or one of its subtypes.

Definition at line 79 of file veil_shmem.h.

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