1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the class library */ 4 /* SoPlex --- the Sequential object-oriented simPlex. */ 5 /* */ 6 /* Copyright (c) 1996-2023 Zuse Institute Berlin (ZIB) */ 7 /* */ 8 /* Licensed under the Apache License, Version 2.0 (the "License"); */ 9 /* you may not use this file except in compliance with the License. */ 10 /* You may obtain a copy of the License at */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 20 /* You should have received a copy of the Apache-2.0 license */ 21 /* along with SoPlex; see the file LICENSE. If not email to soplex@zib.de. */ 22 /* */ 23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 24 25 #include <assert.h> 26 27 #if defined(_WIN32) || defined(_WIN64) 28 29 #include <time.h> 30 31 #else // !(_WIN32 || _WIN64) 32 33 #include <sys/types.h> 34 #include <sys/times.h> 35 //#include <sys/param.h> 36 #include <unistd.h> 37 38 #endif // !(_WIN32 || _WIN64) 39 40 #include "soplex/spxdefines.h" 41 #include "soplex/usertimer.h" 42 43 namespace soplex 44 { 45 /* determine TIMES_TICKS_PER_SEC for clock ticks delivered by times(). 46 * (don't use CLOCKS_PER_SEC since this is related to clock() only). 47 */ 48 #if defined(CLK_TCK) 49 #define TIMES_TICKS_PER_SEC CLK_TCK 50 #elif defined(_SC_CLK_TCK) 51 #define TIMES_TICKS_PER_SEC sysconf(_SC_CLK_TCK) 52 #elif defined(HZ) 53 #define TIMES_TICKS_PER_SEC HZ 54 #else // !CLK_TCK && !_SC_CLK_TCK && !HZ 55 #define TIMES_TICKS_PER_SEC 60 56 #endif // !CLK_TCK && !_SC_CLK_TCK && !HZ 57 58 const long UserTimer::ticks_per_sec = long(TIMES_TICKS_PER_SEC); 59 60 // get actual user, system and real time from system 61 void UserTimer::updateTicks() const 62 { 63 #if defined(_WIN32) || defined(_WIN64) 64 65 uTicks = clock(); 66 67 #else /* !(_WIN32 || _WIN64) */ 68 69 struct tms now; 70 clock_t ret = times(&now); 71 72 if(int(ret) == -1) 73 now.tms_utime = now.tms_stime = ret = 0; 74 75 uTicks = now.tms_utime; 76 77 #endif /* !(_WIN32 || _WIN64) */ 78 } 79 80 // start timer, resume accounting user, system and real time. 81 void UserTimer::start() 82 { 83 // ignore start request if timer is running 84 if(status != RUNNING) 85 { 86 updateTicks(); 87 88 uAccount -= uTicks; 89 status = RUNNING; 90 } 91 92 lasttime = 0; 93 } 94 95 // stop timer, return accounted user time. 96 Real UserTimer::stop() 97 { 98 // status remains unchanged if timer is not running 99 if(status == RUNNING) 100 { 101 updateTicks(); 102 103 uAccount += uTicks; 104 status = STOPPED; 105 } 106 107 return ticks2sec(uAccount); 108 } 109 110 // get accounted user time. 111 Real UserTimer::time() const 112 { 113 if(status == RUNNING) 114 { 115 updateTicks(); 116 lasttime = ticks2sec(uTicks + uAccount); 117 } 118 else 119 { 120 lasttime = ticks2sec(uAccount); 121 } 122 123 return lasttime; 124 } 125 126 Real UserTimer::lastTime() const 127 { 128 return lasttime; 129 } 130 131 } // namespace soplex 132