From d935b0cdf3db440269b9d952b2b281b18f8c7b08 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Tue, 10 Feb 2015 15:28:30 +0200 Subject: tuklib_cpucores: Use cpuset_getaffinity() on FreeBSD if available. In FreeBSD, cpuset_getaffinity() is the preferred way to get the number of available cores. Thanks to Rui Paulo for the patch. I edited it slightly, but hopefully I didn't break anything. --- m4/tuklib_cpucores.m4 | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'm4') diff --git a/m4/tuklib_cpucores.m4 b/m4/tuklib_cpucores.m4 index 64a6b43c..08e2cb0d 100644 --- a/m4/tuklib_cpucores.m4 +++ b/m4/tuklib_cpucores.m4 @@ -45,6 +45,22 @@ compile error #endif ]])], [tuklib_cv_cpucores_method=special], [ +# FreeBSD has both cpuset and sysctl. Look for cpuset first because +# it's a better approach. +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include +#include + +int +main(void) +{ + cpuset_t set; + cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, + sizeof(set), &set); + return 0; +} +]])], [tuklib_cv_cpucores_method=cpuset], [ + # Look for sysctl() solution first, because on OS/2, both sysconf() # and sysctl() pass the tests in this file, but only sysctl() # actually works. @@ -97,9 +113,14 @@ main(void) ]])], [tuklib_cv_cpucores_method=pstat_getdynamic], [ tuklib_cv_cpucores_method=unknown -])])])])]) +])])])])])]) case $tuklib_cv_cpucores_method in + cpuset) + AC_DEFINE([TUKLIB_CPUCORES_CPUSET], [1], + [Define to 1 if the number of available CPU cores + can be detected with cpuset(2).]) + ;; sysctl) AC_DEFINE([TUKLIB_CPUCORES_SYSCTL], [1], [Define to 1 if the number of available CPU cores -- cgit v1.2.3