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authordos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
committerdos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
commitab8cc85adde879fb963c94d15675783f2cf4b183 (patch)
treec202482327f474583b750b2c45dedfc4e4312b1d /src/graph/viewman/cleanup.c.pamphlet
downloadopen-axiom-ab8cc85adde879fb963c94d15675783f2cf4b183.tar.gz
Initial population.
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+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/graph/viewman cleanup.c}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{License}
+<<license>>=
+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+@
+<<*>>=
+<<license>>
+
+#define _CLEANUP_C
+#include "axiom-c-macros.h"
+#include "useproto.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#if !defined(BSDplatform)
+#include <malloc.h>
+#endif
+#include <assert.h>
+#include <signal.h>
+#include <sys/wait.h>
+
+#include "viewman.h"
+#include "actions.h"
+
+#include "util.H1"
+#include "cleanup.H1"
+#include "makeGraph.H1"
+#include "readView.H1"
+
+void
+#ifdef _NO_PROTO
+brokenPipe(sig)
+int sig;
+#else
+brokenPipe(int sig)
+#endif
+{
+ fprintf(stderr,
+ "The viewport manager tried to write to a non-existing pipe.\n");
+}
+
+
+void
+#ifdef _NO_PROTO
+endChild(sig)
+int sig;
+#else
+endChild(int sig)
+#endif
+{
+
+ checkClosedChild = yes;
+}
+
+
+/****************************
+ * void rmViewMgr(slotPtr) *
+ * *
+ * given a pointer to a *
+ * viewManager, this *
+ * procedure removes it *
+ * from the viewport list *
+*****************************/
+
+void
+#ifdef _NO_PROTO
+rmViewMgr(slotPtr)
+ viewManager *slotPtr;
+#else
+rmViewMgr(viewManager *slotPtr)
+#endif
+{
+
+ int i,throwAway,code;
+ viewManager *somePort, *someOtherPort;
+ graphStruct *someGraph,*someOtherGraph; /* used in discarding graphs */
+ viewsWithThisGraph *someView,*someOtherView;
+
+ for (somePort=someOtherPort=viewports;
+ (somePort != 0) && (somePort != slotPtr);
+ somePort=(someOtherPort=somePort)->nextViewport)
+ {}
+ assert ((somePort == 0) ||
+ (somePort == viewports) ||
+ (somePort == someOtherPort->nextViewport));
+
+ if (somePort) {
+ if (somePort == viewports) viewports=viewports->nextViewport;
+ else someOtherPort->nextViewport = somePort->nextViewport;
+ }
+ /*** if view2D, then clean up after the graphs as well ***/
+ if (slotPtr->viewType == view2DType) {
+ for (i=0; i<maxGraphs; i++) {
+ code=readViewport(slotPtr,&throwAway,intSize); /* get the graph to discard */
+ if (code == -1) break; /* read failure - give up */
+ if (throwAway) { /* zero means no graph */
+
+ for (someGraph = someOtherGraph = graphList;
+ (someGraph != 0) && (someGraph->key != throwAway);
+ someGraph=(someOtherGraph=someGraph)->nextGraph)
+ {
+ }
+ /* someGraph is 0 if not found */
+ /* someGraph == graphList if found at first */
+ /* otherwise someGraph == someOtherGraph->nextGraph */
+ assert( (someGraph == 0) ||
+ (someGraph == graphList) ||
+ (someGraph == someOtherGraph->nextGraph));
+
+ if (someGraph) { /* if found (should always be true) */
+
+ for(someView=someOtherView=someGraph->views;
+ (someView !=0 ) && (someView->viewGr != slotPtr);
+ someView=(someOtherView=someView)->nextViewthing)
+ {
+ }
+ /* similarly */
+ assert( (someView == 0) ||
+ (someView == someGraph->views) ||
+ (someView == someOtherView->nextViewthing));
+
+ if (someView) { /* if found (should always be true) */
+ if (someView == someGraph->views)
+ /* first */
+ someGraph->views = someGraph->views->nextViewthing;
+ else
+ someOtherView->nextViewthing = someView->nextViewthing;
+ free(someView); /* remove this viewport
+ from list */
+ }
+ /* if now nothing is pointing to this graph , remove the graph from the list*/
+ if (someGraph->views == 0) {
+ if (someGraph == graphList)
+ graphList = graphList->nextGraph;
+ else
+ someOtherGraph->nextGraph = someGraph->nextGraph;
+ discardGraph(someGraph); /* free the graph */
+ }
+ } /* if someGraph */
+ } /* if throwAway */
+ } /* for i */
+ } /* if type is view2D */
+ close(slotPtr->viewIn);
+ close(slotPtr->viewOut);
+ free(slotPtr);
+} /* rmViewMgr() */
+
+
+/***********************************
+ * int closeChildViewport(slotPtr) *
+ * *
+ * given a pointer to a viewport *
+ * structure (viewManager) this *
+ * procedure first waits for the *
+ * actual process to die and then *
+ * removes it from the list of *
+ * viewports via rmViewMgr(). *
+ ***********************************/
+
+void
+#ifdef _NO_PROTO
+closeChildViewport(slotPtr)
+ viewManager *slotPtr;
+#else
+closeChildViewport(viewManager *slotPtr)
+#endif
+{
+
+ int status;
+ rmViewMgr(slotPtr);
+ wait(&status);
+
+} /* closeChildViewport */
+
+
+/*********************
+ * int goodbye() *
+ * *
+ * kill all children *
+ * (how mean) and *
+ * then kill self. *
+ *********************/
+
+void
+#ifdef _NO_PROTO
+goodbye(sig)
+int sig;
+#else
+goodbye(int sig)
+#endif
+{
+
+ viewManager *v;
+
+ v = viewports;
+ while (v) {
+ kill(v->PID,SIGTERM);
+ while (wait(NULL) == -1);
+ v = v->nextViewport;
+ }
+ exit(0);
+
+}
+
+
+
+
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}