diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-08-21 10:18:37 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-08-21 10:18:37 +0000 |
commit | 167419848f72a992445f3c73a8dbfd562dbe8b66 (patch) | |
tree | d4637c51bb75df5df94207d3b2006380e753ccb8 /process.c | |
parent | 873dd9bc4568a73202977ee1a5ac1dc2a7ff86fb (diff) | |
download | ruby-167419848f72a992445f3c73a8dbfd562dbe8b66.tar.gz |
* process.c (rb_clock_gettime): CLOCK_PROCESS_CPUTIME_ID emulation
using getrusage is implemented.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'process.c')
-rw-r--r-- | process.c | 33 |
1 files changed, 31 insertions, 2 deletions
@@ -6687,14 +6687,21 @@ rb_proc_times(VALUE obj) * For example, Process::CLOCK_REALTIME is defined as * +:POSIX_GETTIMEOFDAY_CLOCK_REALTIME+ when clock_gettime() is not available. * - * Emulations for +:CLOCK_REALTIME+: + * Emulations for +CLOCK_REALTIME+: * [:POSIX_GETTIMEOFDAY_CLOCK_REALTIME] Use gettimeofday(). The resolution is 1 micro second. * [:ISO_C_TIME_CLOCK_REALTIME] Use time(). The resolution is 1 second. * - * Emulations for +:CLOCK_MONOTONIC+: + * Emulations for +CLOCK_MONOTONIC+: * [:MACH_ABSOLUTE_TIME_CLOCK_MONOTONIC] Use mach_absolute_time(), available on Darwin. * The resolution is CPU dependent. * + * Emulations for +CLOCK_PROCESS_CPUTIME_ID+: + * [:SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID] + * Use getrusage with RUSAGE_SELF. + * getrusage is defined by Single Unix Specification. + * The result is addition of ru_utime and ru_stime. + * The resolution is 1 micro second. + * * If the given +clock_id+ is not supported, Errno::EINVAL is raised. * * +unit+ specifies a type of the return value. @@ -6764,6 +6771,26 @@ rb_clock_gettime(int argc, VALUE *argv) goto success; } +#ifdef RUSAGE_SELF +#define RUBY_SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID \ + ID2SYM(rb_intern("SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID")) + if (clk_id == RUBY_SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID) { + struct rusage usage; + long usec; + ret = getrusage(RUSAGE_SELF, &usage); + if (ret != 0) + rb_sys_fail("getrusage"); + ts.tv_sec = usage.ru_utime.tv_sec + usage.ru_stime.tv_sec; + usec = usage.ru_utime.tv_usec + usage.ru_stime.tv_usec; + if (1000000 <= usec) { + ts.tv_sec++; + usec -= 1000000; + } + ts.tv_nsec = usec * 1000; + goto success; + } +#endif + #ifdef __APPLE__ #define RUBY_MACH_ABSOLUTE_TIME_CLOCK_MONOTONIC ID2SYM(rb_intern("MACH_ABSOLUTE_TIME_CLOCK_MONOTONIC")) if (clk_id == RUBY_MACH_ABSOLUTE_TIME_CLOCK_MONOTONIC) { @@ -7109,6 +7136,8 @@ Init_process(void) #endif #ifdef CLOCK_PROCESS_CPUTIME_ID rb_define_const(rb_mProcess, "CLOCK_PROCESS_CPUTIME_ID", CLOCKID2NUM(CLOCK_PROCESS_CPUTIME_ID)); +#elif defined(RUBY_SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID) + rb_define_const(rb_mProcess, "CLOCK_PROCESS_CPUTIME_ID", RUBY_SUS_GETRUSAGE_SELF_USER_AND_SYSTEM_TIME_CLOCK_PROCESS_CPUTIME_ID); #endif #ifdef CLOCK_THREAD_CPUTIME_ID rb_define_const(rb_mProcess, "CLOCK_THREAD_CPUTIME_ID", CLOCKID2NUM(CLOCK_THREAD_CPUTIME_ID)); |