| 1 | /*------------------------------------------------------------\ |
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| 2 | | | |
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| 3 | | Tool : systemcass | |
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| 4 | | | |
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| 5 | | File : usage.h | |
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| 6 | | | |
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| 7 | | Author : Buchmann Richard | |
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| 8 | | | |
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| 9 | | Date : ??_??_2005 | |
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| 10 | | | |
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| 11 | \------------------------------------------------------------*/ |
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| 12 | |
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| 13 | /* |
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| 14 | * This file is part of the Disydent Project |
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| 15 | * Copyright (C) Laboratoire LIP6 - Département ASIM |
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| 16 | * Universite Pierre et Marie Curie |
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| 17 | * |
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| 18 | * Home page : http://www-asim.lip6.fr/disydent |
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| 19 | * E-mail : mailto:richard.buchmann@lip6.fr |
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| 20 | * |
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| 21 | * This library is free software; you can redistribute it and/or modify it |
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| 22 | * under the terms of the GNU Library General Public License as published |
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| 23 | * by the Free Software Foundation; either version 2 of the License, or (at |
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| 24 | * your option) any later version. |
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| 25 | * |
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| 26 | * Disydent is distributed in the hope that it will be |
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| 27 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 29 | * Public License for more details. |
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| 30 | * |
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| 31 | * You should have received a copy of the GNU General Public License along |
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| 32 | * with the GNU C Library; see the file COPYING. If not, write to the Free |
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| 33 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 34 | */ |
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| 35 | #ifndef __USAGE_H__ |
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| 36 | #define __USAGE_H__ |
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| 37 | |
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| 38 | #include <sys/time.h> |
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| 39 | #include <sys/resource.h> |
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| 40 | #include <unistd.h> |
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| 41 | #include <iostream> |
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| 42 | |
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| 43 | struct usage_t { |
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| 44 | unsigned int elapsed_time; |
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| 45 | long memory_size; |
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| 46 | usage_t () |
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| 47 | { |
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| 48 | elapsed_time = 0; |
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| 49 | memory_size = 0; |
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| 50 | } |
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| 51 | void start () |
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| 52 | { |
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| 53 | struct rusage usage; |
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| 54 | getrusage(RUSAGE_SELF, &usage); |
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| 55 | elapsed_time = usage.ru_utime.tv_sec; |
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| 56 | memory_size = usage.ru_maxrss; |
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| 57 | } |
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| 58 | void cont () |
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| 59 | { |
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| 60 | struct rusage usage; |
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| 61 | getrusage(RUSAGE_SELF, &usage); |
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| 62 | elapsed_time = usage.ru_utime.tv_sec - elapsed_time; |
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| 63 | memory_size = usage.ru_maxrss; |
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| 64 | } |
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| 65 | void stop () |
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| 66 | { |
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| 67 | cont (); |
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| 68 | } |
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| 69 | operator unsigned int () const |
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| 70 | { return elapsed_time; } |
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| 71 | long get_memory_size () const |
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| 72 | { return memory_size; } |
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| 73 | friend std::ostream& operator << (std::ostream& o, const usage_t &c) |
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| 74 | { |
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| 75 | return o << c.elapsed_time << "seconds"; |
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| 76 | } |
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| 77 | }; |
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| 78 | |
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| 79 | #endif |
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| 80 | |
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