the begginning

primitives/linux-port/print_indexlist.cpp

@@ -0,0 +1,149 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   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; version 2 of
+   the License.
+
+   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., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/*****************************************************************************
+ * $Id$
+ *
+ ****************************************************************************/
+
+#include <iostream>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+
+#include "PrimitiveMsg.h"
+#include "calpontsystemcatalog.h"
+#include "we_index.h"
+
+
+/** @file
+ * Brief description of the file contents
+ *
+ * More detailed description
+ */
+
+using namespace std;
+
+void usage()
+{
+	cout << "Usage: print_indexlist filename <S> block_offset subblock sbentry" << endl;
+	cout << "   Where S=0 means print the whole block, S=1 means print the subblock" << endl;
+	cout << "   Where subblock_number indicates which subblock to print." << endl;
+	cout << "   Where sbentry indicates the first entry to print" << endl;
+	exit(1);
+}
+
+int main(int argc, char **argv) 
+{
+	char buf[8192];
+	int s, fd, subblock, byteoffset, i, entries, sbentry;
+	string filename;
+	off_t offset;
+	off_t err;
+	IndexListEntry *entry;
+	IndexListParam *ptr;
+	uint32_t fbo;
+
+	if (argc == 1)
+		usage();
+	
+	filename = argv[1];
+	s = atoi(argv[2]);
+	fbo = strtoul(argv[3], 0, 0);
+	subblock = atoi(argv[4]);
+	sbentry = atoi(argv[5]);
+
+	fd = open(filename.c_str(), O_RDONLY);
+	if (fd < 0) {
+		perror("open");
+		exit(1);
+	}
+	offset = ((off_t)fbo * BLOCK_SIZE);
+// 	cout << "BLOCK_SIZE = " << BLOCK_SIZE << " fbo=" << fbo << ", seeking to offset " << offset << endl;
+	err = lseek(fd, offset, SEEK_SET);
+	if (err < 0) {
+		perror("lseek");
+		exit(1);
+	}
+	err = read(fd, buf, BLOCK_SIZE);
+	if (err != BLOCK_SIZE) {
+		if (err < 0)
+			perror("read");
+		cerr << "read error." << endl;
+		exit(1);
+	}
+	close(fd);
+	
+	byteoffset = subblock * 256;
+// 	cout << "subblock=" << subblock << " byte offset=" << byteoffset << endl;
+	entry = reinterpret_cast<IndexListEntry *>(&buf[byteoffset]);
+	if (s == 0 && subblock == 0)
+		entries = 1024;
+	else
+		entries = 32;
+	
+	for (i = sbentry; i < entries; i++) {
+		
+		cout << i << ": ";
+		switch (entry[i].type) {
+			case LLP_SUBBLK:
+				ptr = reinterpret_cast<IndexListParam *>(&entry[i]);
+				cout << "Subblock pointer.  Rid count=" << entry[i].ridCt << 
+					" LBID=" << ptr->fbo <<  " subblock=" << ptr->sbid << 
+					" SBentry=" << ptr->entry << endl;
+				break;
+		    case LLP_BLK:
+				ptr = reinterpret_cast<IndexListParam *>(&entry[i]);
+				cout << "Block pointer.  Rid count=" << entry[i].ridCt << 
+					" LBID=" << ptr->fbo <<  " subblock=" << 
+					ptr->sbid << " SBentry=" << ptr->entry << endl;
+				break;
+			case RID:
+				cout << "RID: " << entry[i].value << endl;
+				break;
+			case LIST_SIZE:
+				if (i == sbentry) {
+					u_int64_t *val = reinterpret_cast<u_int64_t *>(&entry[i+1]);
+					cout << "List Header.  Rid count=" << entry[i].value;
+					cout << " key value=0x" << hex << *val << dec << endl;
+					i++;
+				}
+				else if (i + 1 < entries) {
+					u_int64_t *val = reinterpret_cast<u_int64_t *>(&entry[i+1]);
+					cout << "List Size entry.  Rid count=" << entry[i].value
+					  << " (if a header) value=0x" << hex << *val << dec << endl;
+				}
+				else 
+					cout << "List Size entry.  Rid count=" << entry[i].value << endl;
+				break;
+	    	case NOT_IN_USE:
+				cout << "Not in use (ignored by p_idxlist)" << endl;
+				break;
+	    	case EMPTY_LIST_PTR:
+				cout << "Empty List Pointer (?) (ignored by p_idxlist)" << endl;
+				break;
+	    	case EMPTY_PTR:
+				cout << "Empty Pointer entry (?) (ignored by p_idxlist)" << endl;
+				break;
+			default:
+				cout << "Unknown entry type (" << entry[i].type << ")" << endl;
+				break;
+		}
+	}
+	return 0;
+}