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/* ChvList.h */
#include "../Chv.h"
#include "../Lock.h"
/*--------------------------------------------------------------------*/
/*
--------------------------------------------------------------------
this object handles a list of lists of Chv objects
nlist -- # of lists
heads -- heads[ilist] contains a pointer
to the first Chv object in list ilist
counts -- when not-NULL, counts[ilist] contains the remaining number
of objects to be added to list ilist before it is complete
lock -- mutex object, can be NULL
flags -- when not NULL, a vector to specify when a list needs
to be locked before adding an object to it.
flags[ilist] = 'N' --> no need to lock
flags[ilist] = 'Y' --> must lock
nlocks -- number of times the list was locked
--------------------------------------------------------------------
*/
typedef struct _ChvList ChvList ;
struct _ChvList {
int nlist ;
Chv **heads ;
int *counts ;
Lock *lock ;
char *flags ;
int nlocks ;
} ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------------------------
----- methods found in basics.c ----------------------------------------
------------------------------------------------------------------------
*/
/*
-----------------------
simplest constructor
created -- 98may02, cca
-----------------------
*/
ChvList *
ChvList_new (
void
) ;
/*
-----------------------
set the default fields
created -- 98may02, cca
-----------------------
*/
void
ChvList_setDefaultFields (
ChvList *chvlist
) ;
/*
--------------------------------------------------
clear the data fields, releasing allocated storage
created -- 98may02, cca
--------------------------------------------------
*/
void
ChvList_clearData (
ChvList *chvlist
) ;
/*
------------------------------------------
destructor, free's the object and its data
created -- 98may02, cca
------------------------------------------
*/
void
ChvList_free (
ChvList *chvlist
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------------------------
----- methods found in init.c ------------------------------------------
------------------------------------------------------------------------
*/
/*
------------------------------------------------------------------
purpose -- basic initializer
nlist -- number of lists to be held by this object
counts -- vector that contains number of items expected
for each list.
counts == NULL --> unknown number of items expected
counts != NULL --> known number of items expected
lockflag -- flag to specify lock status
lockflag = 0 --> mutex lock is not allocated or initialized
lockflag = 1 --> mutex lock is allocated and it can synchronize
only threads in this process.
lockflag = 2 --> mutex lock is allocated and it can synchronize
threads in this and other processes.
flags -- vector to specify whether to lock individual lists
flags == NULL --> none or all lists must be locked,
use lockflag to determine
flags[ilist] = 'N' --> no need to lock list ilist
flags[ilist] = 'Y' --> must lock list ilist
created -- 98may02, cca
------------------------------------------------------------------
*/
void
ChvList_init (
ChvList *chvlist,
int nlist,
int counts[],
int lockflag,
char flags[]
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------------------------
----- methods found in IO.c --------------------------------------------
------------------------------------------------------------------------
*/
/*
----------------------------------------
purpose -- to write the object to a file
in human readable form
created -- 98may02, cca
----------------------------------------
*/
void
ChvList_writeForHumanEye (
ChvList *chvlist,
FILE *fp
) ;
/*--------------------------------------------------------------------*/
/*
------------------------------------------------------------------------
----- methods found in util.c ------------------------------------------
------------------------------------------------------------------------
*/
/*
-----------------------------------
return 1 if list ilist is not empty
return 0 if list ilist is empty
created -- 98may02, cca
-----------------------------------
*/
int
ChvList_isListNonempty (
ChvList *chvlist,
int ilist
) ;
/*
---------------------------------------------------------
return 1 if the count for list ilist is zero
return 0 if the count for list ilist is greater than zero
created -- 98may02, cca
---------------------------------------------------------
*/
int
ChvList_isCountZero (
ChvList *chvlist,
int ilist
) ;
/*
---------------------------------
if chv is not NULL then
add chv to list ilist
endif
decrement the count of list ilist
created -- 98may02, cca
---------------------------------
*/
void
ChvList_addObjectToList (
ChvList *chvlist,
Chv *chv,
int ilist
) ;
/*
------------------------------------
return pointer to head of list ilist
and set head to NULL
created -- 98may02, cca
------------------------------------
*/
Chv *
ChvList_getList (
ChvList *chvlist,
int ilist
) ;
/*--------------------------------------------------------------------*/
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