8022853: add ability to load uncompressed object and Klass references in a compressed environment to Unsafe
Reviewed-by: coleenp, jrose, kvn
/* * Copyright 2012, 2013 SAP AG. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */// encapsulates the libperfstat library.//// The purpose of this code is to dynamically load the libperfstat library// instead of statically linking against it. The libperfstat library is an// AIX-specific library which only exists on AIX, not on PASE. If I want to// share binaries between AIX and PASE, I cannot directly link against libperfstat.so.#ifndef OS_AIX_VM_LIBPERFSTAT_AIX_HPP#define OS_AIX_VM_LIBPERFSTAT_AIX_HPP#include <libperfstat.h>class libperfstat {public: // Load the libperfstat library (must be in LIBPATH). // Returns true if succeeded, false if error. static bool init(); // cleanup of the libo4 porting library. static void cleanup(); // direct wrappers for the libperfstat functionality. All they do is // to call the functions with the same name via function pointers. static int perfstat_cpu_total(perfstat_id_t *name, perfstat_cpu_total_t* userbuff, int sizeof_userbuff, int desired_number); static int perfstat_memory_total(perfstat_id_t *name, perfstat_memory_total_t* userbuff, int sizeof_userbuff, int desired_number); static void perfstat_reset();};#endif // OS_AIX_VM_LIBPERFSTAT_AIX_HPP