c++ Programming Glossary: timeval

http://stackoverflow.com/questions/1120478/capturing-a-time-in-milliseconds

use system calls specific to your OS. In Linux you can use timeval tv gettimeofday tv 0 then convert struct tv to your needed ms.. tv 0 then convert struct tv to your needed ms precision timeval has microsecond precision. In Windows you can use SYSTEMTIME..

Issue when scheduling tasks using clock() function

http://stackoverflow.com/questions/11865460/issue-when-scheduling-tasks-using-clock-function

chrono #include sys time.h for `time_t` and `struct timeval` namespace events struct event typedef std function void callback_type.. cb real_when void add const event callback_type cb const timeval when auto real_when std chrono system_clock from_time_t when.tv_sec..

Example code of libssh2 being used for port forwarding

http://stackoverflow.com/questions/1580750/example-code-of-libssh2-being-used-for-port-forwarding

long bytes_read 0 long bytes_written 0 int total_set 0 timeval wait wait.tv_sec 0 wait.tv_usec 2000 sockaddr_in localhost localhost.sin_family..

How can I measure CPU time and wall clock time on both Linux/Windows?

http://stackoverflow.com/questions/17432502/how-can-i-measure-cpu-time-and-wall-clock-time-on-both-linux-windows

#else #include sys time.h double get_wall_time struct timeval time if gettimeofday time NULL Handle error return 0 return..

How to Calculate Execution Time of a Code Snippet in C++

http://stackoverflow.com/questions/1861294/how-to-calculate-execution-time-of-a-code-snippet-in-c

millisecond 10^ 3 intervals return ret #else Linux struct timeval tv gettimeofday tv NULL uint64 ret tv.tv_usec Convert from micro..

How to wait untill all child processes called by fork() complete?

http://stackoverflow.com/questions/279729/how-to-wait-untill-all-child-processes-called-by-fork-complete

sys time.h #include sys wait.h using namespace std struct timeval first second lapsed struct timezone tzp int main int argc char..

C++ Winsock P2P

http://stackoverflow.com/questions/2843277/c-winsock-p2p

all your sockets and add to the mySet like the call above timeval zero 0 0 int sel select 0 mySet NULL NULL zero if FD_ISSET s.. sender fd_set mySet FD_ZERO mySet FD_SET sender mySet timeval zero 0 0 int sel select 0 NULL mySet NULL zero if FD_ISSET sender..

How to set a timeout on blocking sockets in boost asio?

http://stackoverflow.com/questions/291871/how-to-set-a-timeout-on-blocking-sockets-in-boost-asio

until reporting an error. The argument is a struct timeval. If an input or output function blocks for this period of time..

Time difference in C++

http://stackoverflow.com/questions/307596/time-difference-in-c

to use one of the more specific time structures either timeval microsecond resolution or timespec nanosecond resolution but.. do it manually fairly easily #include time.h int diff_ms timeval t1 timeval t2 return t1.tv_sec t2.tv_sec 1000000 t1.tv_usec.. fairly easily #include time.h int diff_ms timeval t1 timeval t2 return t1.tv_sec t2.tv_sec 1000000 t1.tv_usec t2.tv_usec..

Fastest way to get the integer part of sqrt(n)?

http://stackoverflow.com/questions/4930307/fastest-way-to-get-the-integer-part-of-sqrtn

typename Func double benchmark Func f size_t iterations f timeval a b gettimeofday a 0 for iterations 0 f gettimeofday b 0 return..

How to get IOStream to perform better?

http://stackoverflow.com/questions/5166263/how-to-get-iostream-to-perform-better

typename Func double benchmark Func f size_t iterations f timeval a b gettimeofday a 0 for iterations 0 f gettimeofday b 0 return..

C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly

http://stackoverflow.com/questions/588307/c-obtaining-milliseconds-time-on-linux-clock-doesnt-seem-to-work-properl

structs. You'll get a structure like the following struct timeval time_t tv_sec suseconds_t tv_usec share improve this answer..

Benchmarking (python vs. c++ using BLAS) and (numpy)

http://stackoverflow.com/questions/7596612/benchmarking-python-vs-c-using-blas-and-numpy

20 times. I calculate the time passed with double CalcTime timeval start timeval end double factor 1000000 return double end.tv_sec.. the time passed with double CalcTime timeval start timeval end double factor 1000000 return double end.tv_sec factor double..

how to achieve 4 FLOPs per cycle

http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle

math.h #include sys time.h double stoptime void struct timeval t gettimeofday t NULL return double t.tv_sec t.tv_usec 1000000.0..

Sleep less than one millisecond

http://stackoverflow.com/questions/85122/sleep-less-than-one-millisecond

this is pretty straightforward int usleep long usec struct timeval tv tv.tv_sec usec 1000000L tv.tv_usec usec 1000000L return select.. to create a microsleep method int usleep long usec struct timeval tv fd_set dummy SOCKET s socket PF_INET SOCK_STREAM IPPROTO_TCP..