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| author | Jason Evans <jasone@canonware.com> | 2016-10-29 22:55:08 -0700 |
|---|---|---|
| committer | Jason Evans <jasone@canonware.com> | 2016-10-29 22:59:42 -0700 |
| commit | 1d57c03e331ec9763ba55476a53aa1716f1bc8e1 (patch) | |
| tree | acadc4c4b378806e4d7d65863de09c220e6a5a91 | |
| parent | c443b67561891ae68d688daf5f8ce37820cdba2b (diff) | |
| download | jemalloc-1d57c03e331ec9763ba55476a53aa1716f1bc8e1.tar.gz | |
Use CLOCK_MONOTONIC_COARSE rather than COARSE_MONOTONIC_RAW.
The raw clock variant is slow (even relative to plain CLOCK_MONOTONIC),
whereas the coarse clock variant is faster than CLOCK_MONOTONIC, but
still has resolution (~1ms) that is adequate for our purposes.
This resolves #479.
| -rw-r--r-- | configure.ac | 12 | ||||
| -rw-r--r-- | include/jemalloc/internal/jemalloc_internal_defs.h.in | 4 | ||||
| -rw-r--r-- | src/nstime.c | 4 |
3 files changed, 10 insertions, 10 deletions
diff --git a/configure.ac b/configure.ac index 1a89ef1a..40681d16 100644 --- a/configure.ac +++ b/configure.ac @@ -1342,16 +1342,16 @@ if test "x$je_cv_cray_prgenv_wrapper" = "xyes" ; then fi fi -dnl check for CLOCK_MONOTONIC_RAW (Linux-specific). -JE_COMPILABLE([clock_gettime(CLOCK_MONOTONIC_RAW, ...)], [ +dnl check for CLOCK_MONOTONIC_COARSE (Linux-specific). +JE_COMPILABLE([clock_gettime(CLOCK_MONOTONIC_COARSE, ...)], [ #include <time.h> ], [ struct timespec ts; - clock_gettime(CLOCK_MONOTONIC_RAW, &ts); -], [je_cv_clock_monotonic_raw]) -if test "x${je_cv_clock_monotonic_raw}" = "xyes" ; then - AC_DEFINE([JEMALLOC_HAVE_CLOCK_MONOTONIC_RAW]) + clock_gettime(CLOCK_MONOTONIC_COARSE, &ts); +], [je_cv_clock_monotonic_coarse]) +if test "x${je_cv_clock_monotonic_coarse}" = "xyes" ; then + AC_DEFINE([JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE]) fi dnl check for CLOCK_MONOTONIC. diff --git a/include/jemalloc/internal/jemalloc_internal_defs.h.in b/include/jemalloc/internal/jemalloc_internal_defs.h.in index d10c8a4f..6824ab74 100644 --- a/include/jemalloc/internal/jemalloc_internal_defs.h.in +++ b/include/jemalloc/internal/jemalloc_internal_defs.h.in @@ -77,9 +77,9 @@ #undef JEMALLOC_HAVE_ISSETUGID /* - * Defined if clock_gettime(CLOCK_MONOTONIC_RAW, ...) is available. + * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available. */ -#undef JEMALLOC_HAVE_CLOCK_MONOTONIC_RAW +#undef JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE /* * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available. diff --git a/src/nstime.c b/src/nstime.c index c420c88d..0948e29f 100644 --- a/src/nstime.c +++ b/src/nstime.c @@ -110,14 +110,14 @@ nstime_get(nstime_t *time) nstime_init(time, ticks_100ns * 100); } -#elif JEMALLOC_HAVE_CLOCK_MONOTONIC_RAW +#elif JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE # define NSTIME_MONOTONIC true static void nstime_get(nstime_t *time) { struct timespec ts; - clock_gettime(CLOCK_MONOTONIC_RAW, &ts); + clock_gettime(CLOCK_MONOTONIC_COARSE, &ts); nstime_init2(time, ts.tv_sec, ts.tv_nsec); } #elif JEMALLOC_HAVE_CLOCK_MONOTONIC |