1 /*
   2  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_RUNTIME_VMSTRUCTS_HPP
  26 #define SHARE_VM_RUNTIME_VMSTRUCTS_HPP
  27 
  28 #include "utilities/debug.hpp"

  29 #ifdef COMPILER1
  30 #include "c1/c1_Runtime1.hpp"
  31 #endif
  32 
  33 // This table encapsulates the debugging information required by the
  34 // serviceability agent in order to run. Specifically, we need to
  35 // understand the layout of certain C data structures (offsets, in
  36 // bytes, of their fields.)
  37 //
  38 // There are alternatives for the design of this mechanism, including
  39 // parsing platform-specific debugging symbols from a debug build into
  40 // a program database. While this current mechanism can be considered
  41 // to be a workaround for the inability to debug arbitrary C and C++
  42 // programs at the present time, it does have certain advantages.
  43 // First, it is platform-independent, which will vastly simplify the
  44 // initial bringup of the system both now and on future platforms.
  45 // Second, it is embedded within the VM, as opposed to being in a
  46 // separate program database; experience has shown that whenever
  47 // portions of a system are decoupled, version skew is problematic.
  48 // Third, generating a program database, for example for a product

   1 /*
   2  * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_RUNTIME_VMSTRUCTS_HPP
  26 #define SHARE_VM_RUNTIME_VMSTRUCTS_HPP
  27 
  28 #include "utilities/debug.hpp"
  29 #include "utilities/globalDefinitions.hpp"
  30 #ifdef COMPILER1
  31 #include "c1/c1_Runtime1.hpp"
  32 #endif
  33 
  34 // This table encapsulates the debugging information required by the
  35 // serviceability agent in order to run. Specifically, we need to
  36 // understand the layout of certain C data structures (offsets, in
  37 // bytes, of their fields.)
  38 //
  39 // There are alternatives for the design of this mechanism, including
  40 // parsing platform-specific debugging symbols from a debug build into
  41 // a program database. While this current mechanism can be considered
  42 // to be a workaround for the inability to debug arbitrary C and C++
  43 // programs at the present time, it does have certain advantages.
  44 // First, it is platform-independent, which will vastly simplify the
  45 // initial bringup of the system both now and on future platforms.
  46 // Second, it is embedded within the VM, as opposed to being in a
  47 // separate program database; experience has shown that whenever
  48 // portions of a system are decoupled, version skew is problematic.
  49 // Third, generating a program database, for example for a product