/usr/include/wvstreams/unifastregetgen.h is in libwvstreams-dev 4.6.1-12~deb9u1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 2002-2005 Net Integration Technologies, Inc.
*/
#ifndef __UNIFASTREGETGEN_H
#define __UNIFASTREGETGEN_H
#include "unifiltergen.h"
class UniConfValueTree;
/**
* A lightwight but slightly dangerous variant of UniCacheGen.
*
* UniCacheGen tries to make all operations asynchronous, by storing a local
* cache of absolutely everything in the entire UniConf subtree that it wraps.
* UniFastRegetGen, on the other hand, tries to be helpful without actually
* wasting too much memory, but leaves many operations still synchronous.
*
* This is useful for programs that may need to access a variety of different
* UniConf keys, don't need to worry *too* much about blocking occasionally
* while waiting for UniConf, but would like most get() operations to be
* fast.
*
* UniFastRegetGen makes subsequent get() operations on a key, after the
* first one, be guaranteed asynchronous. It caches keys which you've
* previously done get() on, and accepts notifications for those keys
* (so the value is always up to date, but you'll never have to wait for it
* again). It makes no attempt to optimize any other operations, including
* set(), refresh/commit, or iterate. It ignores notifications for any
* keys you haven't explicitly done get() on in the past.
*/
class UniFastRegetGen : public UniFilterGen
{
public:
UniFastRegetGen(IUniConfGen *_inner);
virtual ~UniFastRegetGen();
/***** Overridden members *****/
virtual WvString get(const UniConfKey &key);
virtual bool exists(const UniConfKey &key);
virtual bool haschildren(const UniConfKey &key);
private:
IUniConfGen *inner;
UniConfValueTree *tree;
protected:
virtual void gencallback(const UniConfKey &key, WvStringParm value);
};
#endif // __UNIFASTREGETGEN_H
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