--- /dev/null
+/*
+ This file is a part of libcds - Concurrent Data Structures library
+
+ (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+ Source code repo: http://github.com/khizmax/libcds/
+ Download: http://sourceforge.net/projects/libcds/files/
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CDSLIB_OS_AIX_TOPOLOGY_H
+#define CDSLIB_OS_AIX_TOPOLOGY_H
+
+#ifndef CDSLIB_OS_TOPOLOGY_H
+# error "<cds/os/topology.h> must be included instead"
+#endif
+
+#include <cds/os/details/fake_topology.h>
+
+#include <unistd.h>
+
+#ifdef _AIX53
+# include <sys/processor.h>
+#endif
+
+namespace cds { namespace OS {
+
+ /// IBM AIX specific wrappers
+ inline namespace Aix {
+
+ /// System topology
+ /**
+ The implementation assumes that the processor IDs are in numerical order
+ from 0 to N - 1, where N - count of processor in the system
+ */
+ struct topology: public OS::details::fake_topology
+ {
+ private:
+ //@cond
+ typedef OS::details::fake_topology base_class;
+ //@endcond
+ public:
+ /// Logical processor count for the system
+ static unsigned int processor_count()
+ {
+ long nCount = ::sysconf(_SC_NPROCESSORS_ONLN);
+ if ( nCount == -1 )
+ return 1;
+ return (unsigned int) nCount;
+ }
+
+ /// Get current processor number
+ /**
+ Caveat: AIX has no "get current processor number" system call.
+ The function emulates "current processor number" using thread-specific data.
+ */
+ static unsigned int current_processor()
+ {
+# if defined(_AIX53) && _AIX53 == 1
+ // AIX 5.3 has undocumented function mycpu() in sys/processor.h
+ return ::mycpu();
+# else
+ return base_class::current_processor();
+# endif
+ }
+
+ /// Synonym for \ref current_processor
+ static unsigned int native_current_processor()
+ {
+ return current_processor();
+ }
+
+ //@cond
+ static void init()
+ {}
+ static void fini()
+ {}
+ //@endcond
+ };
+ } // namespace Aix
+
+}} // namespace cds::OS
+
+#endif // #ifndef CDSLIB_OS_AIX_TOPOLOGY_H