/include /src/Varios /Utilities/Jrntests Program, working with cyclic journal (eterbug #4090)

Utilities/JrnTests/Jrntest.cc

+/* This file is part of the UniSet project
+ * Copyright (c) 2002 Free Software Foundation, Inc.
+ * Copyright (c) 2002 Ivan Donchevskiy
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+// --------------------------------------------------------------------------
+/*! \file
+ *  \author Ivan Donchevskiy
+ *  \date   $Date: 2009/07/14 16:59:00 $
+ *  \version $Id: Jrn.h,v 1.0 2009/07/14 16:59:00 vpashka Exp $
+ */
+// --------------------------------------------------------------------------
+
+#include "stdio.h"
+#include "string.h"
+#include "Jrn.h"
+
+char* itoa(int val, int base)
+{
+	
+	static char buf[32] = {0};
+	
+	int i = 30;
+	
+	for(; val && i ; --i, val /= base)
+	
+		buf[i] = "0123456789abcdef"[val % base];
+	
+	return &buf[i+1];
+	
+}
+
+
+void testTable(void)
+{
+	char *chr=new char[2];
+	char *val=new char[2];
+	StorageTable *t;
+	t = new StorageTable("table.test", 6000, 0);
+	int i;
+	printf("testTable\nsize = %d\n",t->size);
+	for(i=0;i<t->size+5;i++)
+	{
+		chr[0]=i%256;
+		if(t->AddRow(chr,chr)==1) printf("elem number %d - no space in StorageTable\n",i);
+	}
+	printf("elements with values=keys added\n");
+	for(i=40;i<60;i++)
+	{
+		chr[0]=i%256;
+		t->DelRow(chr);
+	}
+	printf("elements with keys from 40 to 60 deleted\n");
+	for(i=30;i<50;i++)
+	{
+		chr[0]=i;
+		val[0]=i+40;
+		t->AddRow(chr,val);
+	}
+	printf("elements with keys from 30 to 50 with values=key+40 added\nvalues from keys 25-59\n");
+	for(i=25;i<60;i++)
+	{
+		chr[0]=i;
+		if(t->FindKeyValue(chr,val)!=0) printf("%d, ",val[0]);
+	}
+	printf("\n");
+}
+
+void testJournal1(void)
+{
+	CycleJournal *j;
+	int i;
+	char *str=new char[6];
+	printf("journal test 1\n");
+	j = new CycleJournal("journal.test",2000000,0);
+	printf("size = %d\n",j->size);
+	for(i=1;i<30000;i++)
+	{
+		str = itoa(i,10);
+		j->AddRow(str);
+	}
+	printf("\n20 elements from 10-th:\n");
+	j->ViewRows(10,20);
+	printf("\n20 elements from 10-th after deleting first 20:\n");
+	for(i=0;i<20;i++)
+	{
+		j->DelRow(i);
+	}
+	j->ViewRows(10,20);
+	printf("\nfirst 20 after adding 10 elements\n");
+	for(i=1;i<11;i++)
+	{
+		str = itoa(i,10);
+		j->AddRow(str);
+	}
+	j->ViewRows(0,20);
+	printf("\nthe same after reopen:\n");
+	delete j;
+	j = new CycleJournal("journal.test",2000000,0);
+	j->ViewRows(0,20);
+	printf("\n");
+}
+
+void testJournal2(void)
+{
+	CycleJournal *j;
+	int i,k;
+	char *str=new char[4];
+	j = new CycleJournal("journal.test",2000000,0);
+	printf("journal test 2 - checking number of iterations to find head/tail\n");
+	printf("size = %d\n\n",j->size);
+	printf("iterations = %d\n",j->iter);
+	for(i=0;i<20;i++)
+	{
+		for(k=0;k<1000;k++)
+		{
+			str = itoa(k,10);
+			j->AddRow(str);
+		}
+		delete j;
+		j = new CycleJournal("journal.test",2000000,0);
+		printf("iterations = %d\n",j->iter);
+	}
+	printf("\n");
+}
+
+
+int main(void)
+{
+	testTable();
+
+	testJournal1();
+
+	testJournal2();
+
+	return 0;
+}
\ No newline at end of file

include/Jrn.h

+/* This file is part of the UniSet project
+ * Copyright (c) 2002 Free Software Foundation, Inc.
+ * Copyright (c) 2002 Ivan Donchevskiy
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+// --------------------------------------------------------------------------
+/*! \file
+ *  \author Ivan Donchevskiy
+ *  \date   $Date: 2009/07/14 16:59:00 $
+ *  \version $Id: Jrn.h,v 1.0 2009/07/14 16:59:00 vpashka Exp $
+ */
+// --------------------------------------------------------------------------
+
+#include "stdio.h"
+#include "string.h"
+
+#define str_size 80
+#define key_size 20
+#define val_size 40
+
+struct StorageTableElem
+{
+	char key[key_size];
+	char value[val_size];
+} __attribute__((__packed__));
+
+struct CycleJournalElem
+{
+        char str[str_size];
+	int status;
+} __attribute__((__packed__));
+
+class StorageTable
+{
+	FILE *file;
+	int seekpos;
+	public:
+		int size;
+		StorageTable();
+		StorageTable(const char* name, int sz, int seek);
+		~StorageTable();
+		int AddRow(char* key, char* val);
+		int DelRow(char* key);
+		char* FindKeyValue(char* key, char* val);
+};
+
+class CycleJournal
+{
+	FILE *file;
+	int seekpos;
+	int head,tail;
+	public:
+		int size, iter;
+		CycleJournal();
+		CycleJournal(const char* name, int sz, int seek);
+		~CycleJournal();
+		int AddRow(char* str);
+		int DelRow(int row);
+		int DelAllRows(void);
+		int ViewRows(int beg, int num);
+};