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/* ASCEND modelling environment |
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Copyright (C) 1990, 1993, 1994 Thomas Guthrie Epperly |
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Copyright (C) 2006 Carnegie Mellon University |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place - Suite 330, |
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Boston, MA 02111-1307, USA. |
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*//** |
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@file |
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Ascend Pending Instance Routines. |
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|
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The pending list is implemented as a doubly linked list. |
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Clients of this module should NOT access the internals of this list. |
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They should not access next and prev in particular. |
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Note that only complex types (models, arrays) and not atomic ones |
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(atoms, relations, constants) should ever be put on the list. |
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No client should ever free a struct pending_t *. That is our job. |
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|
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Requires: |
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#include <stdio.h> |
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#include "utilities/ascConfig.h" |
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#include "instance_enum.h" |
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#include "compiler.h" |
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*//* |
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by Tom Epperly |
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Created: 1/24/90 |
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Version: $Revision: 1.6 $ |
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Version control file: $RCSfile: pending.h,v $ |
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Date last modified: $Date: 1997/07/18 12:32:40 $ |
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Last modified by: $Author: mthomas $ |
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*/ |
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|
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#ifndef ASC_PENDING_H |
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#define ASC_PENDING_H |
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|
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/** addtogroup compiler Compiler |
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@{ |
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*/ |
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|
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#include <utilities/ascConfig.h> |
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|
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struct pending_t { |
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struct pending_t *next, *prev; |
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struct Instance *inst; |
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}; |
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|
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extern void InitPendingPool(void); |
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/**< |
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* <!-- InitPendingPool(); --> |
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* Sets up pending structure data management |
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* before anything can be built, ideally at startup time. |
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* Do not call it again unless DestroyPendingPool is called first. |
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* If insufficient memory to compile anything at all, does exit(2). |
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*/ |
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|
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extern void DestroyPendingPool(void); |
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/**< |
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* <!-- DestroyPendingPool(); --> |
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* Destroy pending structure data management. This must be called to |
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* clean up before shutting down ASCEND. |
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* Do not call this function while there are any instances actively |
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* pending unless you are shutting down. |
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* Do not attempt to instantiate anything after you call this unless you |
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* have recalled InitPendingPool. |
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*/ |
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|
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extern void ReportPendingPool(FILE *f); |
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/**< |
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* <!-- ReportPendingPool(f); --> |
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* <!-- FILE *f; --> |
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* Reports on the pending pool to f. |
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*/ |
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|
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#ifdef NDEBUG |
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#define PendingInstance(pt) ((pt)->inst) |
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#else |
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#define PendingInstance(pt) PendingInstanceF(pt) |
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#endif |
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/**< |
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* Returns the instance part of a pending_t structure. |
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* @param pt CONST struct pending_t*, pending instance to query. |
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* @return Returns the instance as a <code>struct Instance*</code>. |
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* @see PendingInstanceF() |
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*/ |
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extern struct Instance *PendingInstanceF(CONST struct pending_t *pt); |
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/**< |
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* <!-- macro PendingInstance(pt) --> |
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* <!-- struct Instance PendingInstanceF(pt) --> |
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* <!-- const struct pending_t *pt; --> |
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* |
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* <!-- This returns the instance part of a pending_t structure. --> |
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* Implementation function for PendingInstance(). Do not call this |
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* function directly - use PendingInstance() instead. |
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*/ |
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|
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extern void ClearList(void); |
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/**< |
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* <!-- void ClearList() --> |
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* Prepare an empty list. This gets rid of any remaining list and makes |
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* a new empty list ready for use. |
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* Causes any instance remaining in the list to forget that they are |
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* pending. |
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*/ |
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|
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extern unsigned long NumberPending(void); |
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/**< |
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* <!-- unsigned long NumberPending() --> |
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* Return the number of instances in the pending instance list. |
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*/ |
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|
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extern void AddBelow(struct pending_t *pt, struct Instance *i); |
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/**< |
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* <!-- void AddBelow(pt,i) --> |
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* <!-- struct pending_t *pt; --> |
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* <!-- struct Instance *i; --> |
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* This adds i into the pending list just below the entry pt. If pt |
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* is NULL, this adds i to the top. |
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* i should be a MODEL_INST or ARRAY_*_INST |
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*/ |
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|
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extern void AddToEnd(struct Instance *i); |
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/**< |
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* <!-- void AddToEnd(i) --> |
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* <!-- struct Instance *i; --> |
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* Insert instance i at the end of the pending instance list. |
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* i should be a MODEL_INST or ARRAY_*_INST |
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*/ |
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|
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extern void RemoveInstance(struct Instance *i); |
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/**< |
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* <!-- void RemoveInstance(i) --> |
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* <!-- struct Instance *i; --> |
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* Remove instance i from the pending instance list if it is in it. |
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* i should be a MODEL_INST or ARRAY_*_INST |
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*/ |
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|
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extern void PendingInstanceRealloced(struct Instance *old_inst, struct Instance *new_inst); |
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/**< |
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* <!-- void PendingInstanceRealloced(old,new) --> |
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* <!-- struct Instance *old,*new; --> |
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* Change references to old to new. |
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* Assumes the old instance will never be used by anyone at all ever again. |
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* new should be a MODEL_INST or ARRAY_*_INST recently realloced. |
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*/ |
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|
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extern int InstanceInList(struct Instance *i); |
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/**< |
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* <!-- int InstanceInList(i) --> |
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* <!-- struct Instance *i; --> |
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* Return true iff i is in the list. |
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* i should be a MODEL_INST or ARRAY_*_INST as any other kind cannot be |
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* pending. |
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*/ |
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|
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extern struct pending_t *TopEntry(void); |
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/**< |
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* <!-- struct pending_t *TopEntry() --> |
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* Return the top item in the pending list. |
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*/ |
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|
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extern struct pending_t *ListEntry(unsigned long n); |
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/**< |
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* <!-- struct pending_t *ListEntry(n) --> |
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* <!-- unsigned long n; --> |
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* Return the n'th entry in the list. This returns NULL if n is less |
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* than one or greater than the length of the list. |
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*/ |
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|
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extern struct pending_t *BottomEntry(void); |
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/**< |
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* <!-- struct pending_t *BottomEntry() --> |
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* Return the bottom item in the pending list. |
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*/ |
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|
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extern void MoveToBottom(struct pending_t *pt); |
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/**< |
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* <!-- void MoveToBottom(struct pending_t *pt) --> |
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* Move the item pt to the bottom of the list. |
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*/ |
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|
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ASC_DLLSPEC unsigned long NumberPendingInstances(struct Instance *i); |
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/**< |
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* <!-- unsigned long NumberPendingInstances; --> |
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* <!-- struct Instance *i; --> |
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* Visits the Instance Tree seatch for instances with pending statements. |
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* Increments g_unresolved_count for each pending instance found. |
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* Returns the total count of pendings. |
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*/ |
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|
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/* @} */ |
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|
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#endif /* ASC_PENDING_H */ |
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