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Code Issues Releases Wiki Activity

ircd::prof: Add more timing calls with better resolution.

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This commit is contained in:
Jason Volk 2019-04-06 14:18:08 -07:00
parent 161502452a
commit d1966fffb5
2 changed files with 22 additions and 0 deletions
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2
include/ircd/prof.h
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@ -29,6 +29,8 @@ namespace ircd::prof
uint64_t time_user(); ///< Nanoseconds of CPU time in userspace.
uint64_t time_kern(); ///< Nanoseconds of CPU time in kernelland.
uint64_t time_real(); ///< Nanoseconds of CPU time real.
uint64_t time_proc(); ///< Nanoseconds of CPU time for process.
uint64_t time_thrd(); ///< Nanoseconds of CPU time for thread.
// Observe
system &hotsample(system &) noexcept;

20
ircd/prof.cc
View file

@ -649,6 +649,26 @@ ircd::prof::debug(std::ostream &s,
return s;
}
//
// Interface
//
uint64_t
ircd::prof::time_thrd()
{
struct ::timespec tv;
syscall(::clock_gettime, CLOCK_THREAD_CPUTIME_ID, &tv);
return ulong(tv.tv_sec) * 1000000000UL + tv.tv_nsec;
}
uint64_t
ircd::prof::time_proc()
{
struct ::timespec tv;
syscall(::clock_gettime, CLOCK_PROCESS_CPUTIME_ID, &tv);
return ulong(tv.tv_sec) * 1000000000UL + tv.tv_nsec;
}
//
// Interface (cross-platform)
//