/*
* Copyright 2001 Perforce Software. All rights reserved.
*
* This file is part of Perforce - the FAST SCM System.
*/
/*
* hash.h - simple in-memory hashing routines
*
* This class implements a simple hashing scheme. The client is
* expected to subclass Hash, providing type-specific Compare(),
* Key(), Delete(), and New() methods for the hashed data.
*
* The default Compare(), Key(), and Delete() assume that the
* hashed item begins with a char * key.
*
* Classes:
*
* Hash - simple in-memory hashing routines
*
* Methods:
*
* Hash::Find() - lookup item, possibly entering it
* Hash::Enter() - enter item into table
* Hash::Check() - lookup item, without entering it
* Hash::Keystring() - produce an integer hash of a string
* Hash::Stats() - dump out hash table statistics (stdout)
*
* Virtual Methods, provided by subclass:
*
* Hash::Compare() - compare two items
* Hash::Key() - produce an integer hash of item's key
* Hash::Delete() - delete an item
* Hash::New() - create an item
*/
struct Hash {
public:
int Find( void **data, int enter );
int Enter( void **data ) { return !Find( data, !0 ); }
int Check( void **data ) { return Find( data, 0 ); }
public:
Hash( char *name );
virtual ~Hash();
virtual int Compare( void *d1, void *d2 );
virtual int Key( void *d1 );
virtual void Delete( void *d1 );
virtual void * New() = 0;
int KeyString( const char *s );
void Stats();
private:
void Rehash();
struct Hasher *hp;
} ;
# |
Change |
User |
Description |
Committed |
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#1
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19472 |
Liz Lam |
Initial add of the 2016.1 p4/p4api source code. |
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