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Merge branch 'km/bsd-sysctl'

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We now detect number of CPUs on older BSD-derived systems.

* km/bsd-sysctl:
  thread-utils.c: detect CPU count on older BSD-like systems
  configure: support HAVE_BSD_SYSCTL option
This commit is contained in:
Junio C Hamano 2015-03-20 13:11:49 -07:00
commit 551fc7aec1
5 changed files with 54 additions and 1 deletions
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6
Makefile
View File

@ -357,6 +357,8 @@ all::
# and define it to "no" if you need to remove the parentheses () around the
# constant. The default is "auto", which means to use parentheses if your
# compiler is detected to support it.
#
# Define HAVE_BSD_SYSCTL if your platform has a BSD-compatible sysctl function.
GIT-VERSION-FILE: FORCE
@$(SHELL_PATH) ./GIT-VERSION-GEN
@ -1431,6 +1433,10 @@ ifdef HAVE_CLOCK_MONOTONIC
BASIC_CFLAGS += -DHAVE_CLOCK_MONOTONIC
endif
ifdef HAVE_BSD_SYSCTL
BASIC_CFLAGS += -DHAVE_BSD_SYSCTL
endif
ifeq ($(TCLTK_PATH),)
NO_TCLTK = NoThanks
endif

5
config.mak.uname
View File

@ -107,6 +107,7 @@ ifeq ($(uname_S),Darwin)
COMPAT_OBJS += compat/precompose_utf8.o
BASIC_CFLAGS += -DPRECOMPOSE_UNICODE
BASIC_CFLAGS += -DPROTECT_HFS_DEFAULT=1
HAVE_BSD_SYSCTL = YesPlease
endif
ifeq ($(uname_S),SunOS)
NEEDS_SOCKET = YesPlease
@ -199,6 +200,7 @@ ifeq ($(uname_S),FreeBSD)
PYTHON_PATH = /usr/local/bin/python
HAVE_PATHS_H = YesPlease
GMTIME_UNRELIABLE_ERRORS = UnfortunatelyYes
HAVE_BSD_SYSCTL = YesPlease
endif
ifeq ($(uname_S),OpenBSD)
NO_STRCASESTR = YesPlease
@ -208,6 +210,7 @@ ifeq ($(uname_S),OpenBSD)
BASIC_CFLAGS += -I/usr/local/include
BASIC_LDFLAGS += -L/usr/local/lib
HAVE_PATHS_H = YesPlease
HAVE_BSD_SYSCTL = YesPlease
endif
ifeq ($(uname_S),MirBSD)
NO_STRCASESTR = YesPlease
@ -215,6 +218,7 @@ ifeq ($(uname_S),MirBSD)
USE_ST_TIMESPEC = YesPlease
NEEDS_LIBICONV = YesPlease
HAVE_PATHS_H = YesPlease
HAVE_BSD_SYSCTL = YesPlease
endif
ifeq ($(uname_S),NetBSD)
ifeq ($(shell expr "$(uname_R)" : '[01]\.'),2)
@ -225,6 +229,7 @@ ifeq ($(uname_S),NetBSD)
USE_ST_TIMESPEC = YesPlease
NO_MKSTEMPS = YesPlease
HAVE_PATHS_H = YesPlease
HAVE_BSD_SYSCTL = YesPlease
endif
ifeq ($(uname_S),AIX)
DEFAULT_PAGER = more

23
configure.ac
View File

@ -1046,6 +1046,29 @@ GIT_CONF_SUBST([NO_INITGROUPS])
#
# Define NO_ICONV if your libc does not properly support iconv.
AC_DEFUN([BSD_SYSCTL_SRC], [
AC_LANG_PROGRAM([[
#include <stddef.h>
#include <sys/types.h>
#include <sys/sysctl.h>
]],[[
int val, mib[2];
size_t len;
mib[0] = CTL_HW;
mib[1] = 1;
len = sizeof(val);
return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
]])])
#
# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
AC_MSG_CHECKING([for BSD sysctl])
AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
[AC_MSG_RESULT([yes])
HAVE_BSD_SYSCTL=YesPlease],
[AC_MSG_RESULT([no])
HAVE_BSD_SYSCTL=])
GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
## Other checks.
# Define USE_PIC if you need the main git objects to be built with -fPIC

3
git-compat-util.h
View File

@ -127,6 +127,9 @@
#else
#include <poll.h>
#endif
#ifdef HAVE_BSD_SYSCTL
#include <sys/sysctl.h>
#endif
#if defined(__MINGW32__)
/* pull in Windows compatibility stuff */

18
thread-utils.c
View File

@ -35,7 +35,23 @@ int online_cpus(void)
if (!pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0))
return (int)psd.psd_proc_cnt;
#endif
#elif defined(HAVE_BSD_SYSCTL) && defined(HW_NCPU)
int mib[2];
size_t len;
int cpucount;
mib[0] = CTL_HW;
# ifdef HW_AVAILCPU
mib[1] = HW_AVAILCPU;
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;
# endif /* HW_AVAILCPU */
mib[1] = HW_NCPU;
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;
#endif /* defined(HAVE_BSD_SYSCTL) && defined(HW_NCPU) */
#ifdef _SC_NPROCESSORS_ONLN
if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0)