cdev-1.7.2n

2022-12-13 12:44:04 +01:00
commit b3b88fc333
1357 changed files with 338883 additions and 0 deletions
--- a/extensions/cdevGenericServer/cdevContextMap/cdevContextMap.cc
+++ b/extensions/cdevGenericServer/cdevContextMap/cdevContextMap.cc
@@ -0,0 +1,123 @@
+#include <cdevContextMap.h>
+
+// *****************************************************************************
+// * cdevContextMap::cdevContextMap :
+// *	This is the constructor for the class and it initializes all 
+// *	data items to 0 or NULL...
+// *****************************************************************************
+cdevContextMap::cdevContextMap  ( void ) 
+	: entries(NULL), maximum(0), cnt(0) 
+	{}
+
+// *****************************************************************************
+// * cdevContextMap::~cdevContextMap :
+// *	This is the destructor for the class and it will delete any
+// *	cdevData objects that have been allocated using new and will
+// *	then free the array that was allocated using malloc or realloc.
+// *****************************************************************************
+cdevContextMap::~cdevContextMap ( void )
+	{
+	if(entries!=NULL)
+		{
+		for(int i=0; i<maximum; i++) if(entries[i]!=NULL) delete entries[i];
+		free(entries);
+		}
+	entries = NULL;
+	maximum = 0;
+	cnt     = 0;
+	}
+
+
+// *****************************************************************************
+// * cdevContextMap::resize :
+// *	This method is called to double the number of pointers that 
+// *	are available to store context items in...
+// *****************************************************************************
+void cdevContextMap::resize ( void )
+	{
+	if(maximum<=0)
+		{
+		maximum = 64;
+		entries = (cdevData **)malloc(maximum * sizeof(cdevData *));
+		memset(entries, 0, maximum*sizeof(cdevData *));
+		}
+	else	{
+		entries = (cdevData **)realloc(entries, 2*maximum*sizeof(cdevData *));
+		memset(&entries[maximum], 0, maximum*sizeof(cdevData *));
+		maximum *= 2;
+		}
+	}
+
+// *****************************************************************************
+// * cdevContextMap::insert :
+// *	This method is used to add a new cdevData object to the
+// *	cdevContextMap table... If a matching cdevData object already
+// *	exists in the class, then its identifier will be returned...
+// *	otherwise, a new cdevData object will be added to the list and 
+// *	the index of the new item will be returned...
+// ***************************************************************************** 
+int cdevContextMap::insert ( cdevData & context )
+	{
+	int i;
+	int found = 0;
+
+	for(i=0; 
+	    i<cnt && (entries[i]==NULL || !(found=(*entries[i]==context)));
+	    i++);
+
+	if(!found)
+		{
+		if(i>=maximum) resize();
+		entries[i] = new cdevData(context);
+		cnt++;
+		}
+	return i;
+	}
+
+
+// *****************************************************************************
+// * cdevContextMap::find :
+// *	This method allows the caller to obtain the index of a context
+// *	cdevData object that matches the cdevData object he provides...
+// *	If a matching context object cannot be found, then -1 will be
+// *	returned.
+// *****************************************************************************
+int cdevContextMap::find ( cdevData & context )
+	{
+	int i;
+	int found;
+
+	for(i=0; 
+	    i<cnt && (entries[i]==NULL || !(found=(*entries[i]==context)));
+	    i++);
+	    
+	return (i<cnt)?i:-1;
+	}
+
+// *****************************************************************************
+// * cdevContextMap::asciiDump :
+// *	This is a diagnostic method that allows the caller to dump the
+// *	contents of the cdevContextMap table to a file descriptor...
+// *****************************************************************************
+void cdevContextMap::asciiDump ( FILE * fp )
+	{
+	fprintf(fp, "----------------------------------------------------------\n");
+	fprintf(fp, "           Diagnostic Dump of CDEV Context Map\n");
+	fprintf(fp, "----------------------------------------------------------\n");
+	fprintf(fp, "Number of Entries           : %i\n", cnt);
+	fprintf(fp, "Allocated Maximum Entries   : %i\n", maximum);
+
+	for(int i=0; i<cnt; i++)
+		{
+		fprintf(fp, "\n\t------------------------------------------------\n");
+		fprintf(fp, "\tContext at Entry Number %i\n", i);
+		fprintf(fp, "\t------------------------------------------------\n");
+		if(entries[i]==NULL) fprintf(fp, "\t(not specified)\n");
+		else                 entries[i]->asciiDump(fp);
+		fflush(fp);
+		}
+	fprintf(fp, "----------------------------------------------------------\n");
+	fprintf(fp, "        End of Diagnostic Dump of CDEV Context Map\n");
+	fprintf(fp, "----------------------------------------------------------\n\n");
+	fflush(fp);
+	}