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/*******************************************************/
/* "C" Language Integrated Production System */
/* */
/* CLIPS Version 6.24 06/05/06 */
/* */
/* UTILITY HEADER FILE */
/*******************************************************/
/*************************************************************/
/* Purpose: Provides a set of utility functions useful to */
/* other modules. Primarily these are the functions for */
/* handling periodic garbage collection and appending */
/* string data. */
/* */
/* Principal Programmer(s): */
/* Gary D. Riley */
/* */
/* Contributing Programmer(s): */
/* */
/* Revision History: */
/* */
/* 6.24: Renamed BOOLEAN macro type to intBool. */
/* */
/*************************************************************/
#ifndef _H_utility
#define _H_utility
#ifdef LOCALE
#undef LOCALE
#endif
struct cleanupFunction
{
char *name;
void (*ip)(void *);
int priority;
struct cleanupFunction *next;
short int environmentAware;
};
struct callFunctionItem
{
char *name;
void (*func)(void *);
int priority;
struct callFunctionItem *next;
short int environmentAware;
};
#define UTILITY_DATA 55
struct utilityData
{
struct cleanupFunction *ListOfCleanupFunctions;
struct cleanupFunction *ListOfPeriodicFunctions;
short GarbageCollectionLocks;
short GarbageCollectionHeuristicsEnabled;
short PeriodicFunctionsEnabled;
short YieldFunctionEnabled;
unsigned long EphemeralItemCount;
unsigned long EphemeralItemSize;
unsigned long CurrentEphemeralCountMax;
unsigned long CurrentEphemeralSizeMax;
void (*YieldTimeFunction)(void);
int LastEvaluationDepth ;
};
#define UtilityData(theEnv) ((struct utilityData *) GetEnvironmentData(theEnv,UTILITY_DATA))
#ifdef _UTILITY_SOURCE_
#define LOCALE
#else
#define LOCALE extern
#endif
#if ENVIRONMENT_API_ONLY
#define DecrementGCLocks(theEnv) EnvDecrementGCLocks(theEnv)
#define IncrementGCLocks(theEnv) EnvIncrementGCLocks(theEnv)
#define RemovePeriodicFunction(theEnv,a) EnvRemovePeriodicFunction(theEnv,a)
#else
#define DecrementGCLocks() EnvDecrementGCLocks(GetCurrentEnvironment())
#define IncrementGCLocks() EnvIncrementGCLocks(GetCurrentEnvironment())
#define RemovePeriodicFunction(a) EnvRemovePeriodicFunction(GetCurrentEnvironment(),a)
#endif
LOCALE void InitializeUtilityData(void *);
LOCALE void PeriodicCleanup(void *,intBool,intBool);
LOCALE intBool AddCleanupFunction(void *,char *,void (*)(void *),int);
LOCALE intBool EnvAddPeriodicFunction(void *,char *,void (*)(void *),int);
LOCALE intBool AddPeriodicFunction(char *,void (*)(void),int);
LOCALE intBool RemoveCleanupFunction(void *,char *);
LOCALE intBool EnvRemovePeriodicFunction(void *,char *);
LOCALE char *AppendStrings(void *,char *,char *);
LOCALE char *StringPrintForm(void *,char *);
LOCALE char *AppendToString(void *,char *,char *,int *,unsigned *);
LOCALE char *AppendNToString(void *,char *,char *,unsigned,int *,unsigned *);
LOCALE char *ExpandStringWithChar(void *,int,char *,int *,unsigned *,unsigned);
LOCALE struct callFunctionItem *AddFunctionToCallList(void *,char *,int,void (*)(void *),
struct callFunctionItem *,intBool);
LOCALE struct callFunctionItem *RemoveFunctionFromCallList(void *,char *,
struct callFunctionItem *,
int *);
LOCALE void DeallocateCallList(void *,struct callFunctionItem *);
LOCALE unsigned ItemHashValue(void *,unsigned short,void *,unsigned);
LOCALE void YieldTime(void *);
LOCALE short SetGarbageCollectionHeuristics(void *,short);
LOCALE void EnvIncrementGCLocks(void *);
LOCALE void EnvDecrementGCLocks(void *);
LOCALE short EnablePeriodicFunctions(void *,short);
LOCALE short EnableYieldFunction(void *,short);
#endif
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