hostinfo.cc revision 1875
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <ctype.h> 30#include <errno.h> 31#include <math.h> 32#include <unistd.h> 33 34#include <cstdio> 35#include <cstdlib> 36#include <cstring> 37#include <string> 38 39#include "base/misc.hh" 40#include "sim/host.hh" 41 42using namespace std; 43 44string 45__get_hostname() 46{ 47 char host[256]; 48 if (gethostname(host, sizeof host) == -1) 49 warn("could not get host name!"); 50 return host; 51} 52 53string & 54hostname() 55{ 56 static string hostname = __get_hostname(); 57 return hostname; 58} 59 60uint64_t 61procInfo(char *filename, char *target) 62{ 63 int done = 0; 64 char line[80]; 65 char format[80]; 66 long usage; 67 68 FILE *fp = fopen(filename, "r"); 69 70 while (fp && !feof(fp) && !done) { 71 if (fgets(line, 80, fp)) { 72 if (strncmp(line, target, strlen(target)) == 0) { 73 snprintf(format, sizeof(format), "%s %%ld", target); 74 sscanf(line, format, &usage); 75 76 fclose(fp); 77 return usage ; 78 } 79 } 80 } 81 82 if (fp) 83 fclose(fp); 84 85 return 0; 86} 87