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authorXanadu <none@none>2010-07-20 02:49:28 +0200
committerXanadu <none@none>2010-07-20 02:49:28 +0200
commit79622802f397258ee0f34327ba3ae6977ca3e7ff (patch)
tree1868946c234ab9ee256a6b7766a15713eae94235 /externals/mysql/mysys/my_getncpus.c
parent7dd2dc91816ab8b3bc3b99a1b1c99c7ea314d5a8 (diff)
parentf906976837502fa5aa81b982b901d1509f5aa0c4 (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.c49
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;
+}