c++ Programming Glossary: clock_gettime
CPU time is always zero :( http://stackoverflow.com/questions/10393093/cpu-time-is-always-zero time using following code. timespec time1 time2 temp_time clock_gettime CLOCK_PROCESS_CPUTIME_ID time1 int i int cpu_sum 0 for i 0 i.. int i int cpu_sum 0 for i 0 i nelements i cpu_sum array i clock_gettime CLOCK_PROCESS_CPUTIME_ID time2 temp_time.tv_sec time2.tv_sec..
Ubuntu Linux C++ error: undefined reference to 'clock_gettime' and 'clock_settime' http://stackoverflow.com/questions/2418157/ubuntu-linux-c-error-undefined-reference-to-clock-gettime-and-clock-settim Linux C error undefined reference to 'clock_gettime' and 'clock_settime' I am pretty new to Ubuntu but I can't.. using namespace std int main timespec time1 time2 int temp clock_gettime CLOCK_PROCESS_CPUTIME_ID time1 do stuff here clock_gettime CLOCK_PROCESS_CPUTIME_ID.. clock_gettime CLOCK_PROCESS_CPUTIME_ID time1 do stuff here clock_gettime CLOCK_PROCESS_CPUTIME_ID time2 return 0 I am using CodeBlocks..
C++ Timer function to provide time in nano seconds http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds in a loop is correct. For Linux and BSD you want to use clock_gettime . #include sys time.h int main timespec ts clock_gettime CLOCK_MONOTONIC.. clock_gettime . #include sys time.h int main timespec ts clock_gettime CLOCK_MONOTONIC ts Works on FreeBSD clock_gettime CLOCK_REALTIME.. ts clock_gettime CLOCK_MONOTONIC ts Works on FreeBSD clock_gettime CLOCK_REALTIME ts Works on Linux For windows you want to use..
Timers to measure latency http://stackoverflow.com/questions/305615/timers-to-measure-latency time in nano seconds For Linux and BSD you want to use clock_gettime . #include sys time.h int main timespec ts clock_gettime CLOCK_MONOTONIC.. clock_gettime . #include sys time.h int main timespec ts clock_gettime CLOCK_MONOTONIC ts Works on FreeBSD clock_gettime CLOCK_REALTIME.. ts clock_gettime CLOCK_MONOTONIC ts Works on FreeBSD clock_gettime CLOCK_REALTIME ts Works on Linux For windows you want to use..
What's the equivalent of Windows' QueryPerformanceCounter on OSX? http://stackoverflow.com/questions/464618/whats-the-equivalent-of-windows-queryperformancecounter-on-osx question http www.tin.org bin man.cgi section 3 topic clock_gettime and the other functions mentioned there it's Posix Will fall..
High resolution timer with C++ and Linux? http://stackoverflow.com/questions/538609/high-resolution-timer-with-c-and-linux there is a boost ptime function you can use or a POSIX clock_gettime function which can serve basically the same purpose. share..
Porting clock_gettime to windows http://stackoverflow.com/questions/5404277/porting-clock-gettime-to-windows clock_gettime to windows I have the following code running on qnx momemntics... void start MyTestFunc Initialize the Test Start time clock_gettime CLOCK_REALTIME start_time ... additonal code. cout The exectuion.. func calculateExecutionTime double calculateExecutionTime clock_gettime CLOCK_REALTIME stop_time double dSeconds stop_time.tv_sec start_time.tv_sec..
timespec equivalent for windows http://stackoverflow.com/questions/8583308/timespec-equivalent-for-windows . Also clock_getres CLOCK_REALTIME ... returns 15 msecs so clock_gettime is unlikely to help. And CLOCK_MONOTONIC and CLOCK_PROCESS_CPUTIME_ID..
Why does the library linker flag sometimes have to go at the end using GCC? http://stackoverflow.com/questions/9417169/why-does-the-library-linker-flag-sometimes-have-to-go-at-the-end-using-gcc function `main' prog.c .text 0xe6 undefined reference to `clock_gettime' prog.c .text 0x2fc undefined reference to `clock_gettime' collect2.. `clock_gettime' prog.c .text 0x2fc undefined reference to `clock_gettime' collect2 ld returned 1 exit status make buff Error 1 I have.. it had no undefined symbols. Processing proc resulted in clock_gettime being an undefined symbol. gcc will not go back and look in..
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