diff options
author | nari <nari@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-05 14:53:16 +0000 |
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committer | nari <nari@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-05 14:53:16 +0000 |
commit | ab012bda4a0bdfb720fdf4debbf401f6923f401f (patch) | |
tree | ed86d474f3347bb29db8c8dfe89ea18e66eaa3be | |
parent | 31e6f72c8ea0990ca7acdfc7b99b89abd4566f0b (diff) |
* gc.c (getrusage_time): uses clock_gettime() with
CLOCK_PROCESS_CPUTIME_ID when available, which provides a 1ns
precision on linux. [ruby-core:50495] [Bug #7500]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38214 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | ChangeLog | 6 | ||||
-rw-r--r-- | gc.c | 9 |
2 files changed, 14 insertions, 1 deletions
@@ -1,3 +1,9 @@ +Wed Dec 5 23:50:23 2012 Narihiro Nakamura <authornari@gmail.com> + + * gc.c (getrusage_time): uses clock_gettime() with + CLOCK_PROCESS_CPUTIME_ID when available, which provides a 1ns + precision on linux. [ruby-core:50495] [Bug #7500] + Wed Dec 5 22:46:02 2012 Nobuyoshi Nakada <nobu@ruby-lang.org> * vm.c (rb_vm_make_proc): save the proc made from the given block so @@ -3853,7 +3853,14 @@ static inline void gc_prof_set_heap_info(rb_objspace_t *, gc_profile_record *); static double getrusage_time(void) { -#ifdef RUSAGE_SELF +#if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_PROCESS_CPUTIME_ID) + struct timespec ts; + + if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) { + return ts.tv_sec + ts.tv_nsec * 1e-9; + } + return 0.0; +#elif defined RUSAGE_SELF struct rusage usage; struct timeval time; getrusage(RUSAGE_SELF, &usage); |