diff options
author | Xanadu <none@none> | 2010-07-20 02:49:28 +0200 |
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committer | Xanadu <none@none> | 2010-07-20 02:49:28 +0200 |
commit | 79622802f397258ee0f34327ba3ae6977ca3e7ff (patch) | |
tree | 1868946c234ab9ee256a6b7766a15713eae94235 /externals/mysql/mysys/my_getncpus.c | |
parent | 7dd2dc91816ab8b3bc3b99a1b1c99c7ea314d5a8 (diff) | |
parent | f906976837502fa5aa81b982b901d1509f5aa0c4 (diff) |
Merge. Revision history for source files should be all back now.
--HG--
branch : trunk
rename : sql/CMakeLists.txt => sql/tools/CMakeLists.txt
rename : src/server/game/Pools/PoolHandler.cpp => src/server/game/Pools/PoolMgr.cpp
rename : src/server/game/Pools/PoolHandler.h => src/server/game/Pools/PoolMgr.h
rename : src/server/game/PrecompiledHeaders/NixCorePCH.cpp => src/server/game/PrecompiledHeaders/gamePCH.cpp
rename : src/server/game/PrecompiledHeaders/NixCorePCH.h => src/server/game/PrecompiledHeaders/gamePCH.h
Diffstat (limited to 'externals/mysql/mysys/my_getncpus.c')
-rw-r--r-- | externals/mysql/mysys/my_getncpus.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/externals/mysql/mysys/my_getncpus.c b/externals/mysql/mysys/my_getncpus.c new file mode 100644 index 00000000000..c09684abe5b --- /dev/null +++ b/externals/mysql/mysys/my_getncpus.c @@ -0,0 +1,49 @@ +/* Copyright (C) 2006 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +/* get the number of (online) CPUs */ + +#include "mysys_priv.h" +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +static int ncpus=0; + +int my_getncpus() +{ + if (!ncpus) + { +#ifdef _SC_NPROCESSORS_ONLN + ncpus= sysconf(_SC_NPROCESSORS_ONLN); +#elif defined(__WIN__) + SYSTEM_INFO sysinfo; + + /* + * We are not calling GetNativeSystemInfo here because (1) we + * don't believe that they return different values for number + * of processors and (2) if WOW64 limits processors for Win32 + * then we don't want to try to override that. + */ + GetSystemInfo(&sysinfo); + + ncpus= sysinfo.dwNumberOfProcessors; +#else +/* unknown so play safe: assume SMP and forbid uniprocessor build */ + ncpus= 2; +#endif + } + return ncpus; +} |