ADT
aaron-thesis
arm-eh
ast-experimental
cleanup-dtors
deferred_resn
demangler
enum
forall-pointer-decay
jacob/cs343-translation
jenkins-sandbox
new-ast
new-ast-unique-expr
new-env
no_list
persistent-indexer
pthread-emulation
qualifiedEnum
resolv-new
with_gc
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Last change
on this file since df47e2f was de90452, checked in by Thierry Delisle <tdelisle@…>, 9 years ago |
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Added new benchmark folder and added more focused benchmarks for thread/coroutine context switch
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-
Property mode
set to
100644
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File size:
798 bytes
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| Line | |
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| 1 | #include <fstream>
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| 2 | #include <stdlib>
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| 3 | #include <threads>
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| 4 |
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| 5 | #include <unistd.h> // sysconf
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| 6 | #include <sys/times.h> // times
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| 7 | #include <time.h>
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| 8 |
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| 9 | inline unsigned long long int Time() {
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| 10 | timespec ts;
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| 11 | clock_gettime(
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| 12 | #if defined( __linux__ )
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| 13 | CLOCK_THREAD_CPUTIME_ID,
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| 14 | #elif defined( __freebsd__ )
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| 15 | CLOCK_PROF,
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| 16 | #elif defined( __solaris__ )
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| 17 | CLOCK_HIGHRES,
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| 18 | #else
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| 19 | #error uC++ : internal error, unsupported architecture
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| 20 | #endif
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| 21 | &ts );
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| 22 | return 1000000000LL * ts.tv_sec + ts.tv_nsec;
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| 23 | } // Time
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| 24 |
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| 25 | #ifndef N
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| 26 | #define N 100000000
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| 27 | #endif
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| 28 |
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| 29 | int main() {
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| 30 | const unsigned int NoOfTimes = N;
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| 31 | long long int StartTime, EndTime;
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| 32 |
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| 33 | StartTime = Time();
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| 34 | for ( volatile unsigned int i = 0; i < NoOfTimes; i += 1 ) {
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| 35 | yield();
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| 36 | }
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| 37 | EndTime = Time();
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| 38 |
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| 39 | sout | ( EndTime - StartTime ) / NoOfTimes | endl;
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| 40 | }
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