src/share/vm/runtime/java.hpp

Thu, 10 Apr 2008 15:49:16 -0400

author
sbohne
date
Thu, 10 Apr 2008 15:49:16 -0400
changeset 528
c6ff24ceec1c
parent 435
a61af66fc99e
child 611
6b648fefb395
permissions
-rw-r--r--

6686407: Fix for 6666698 broke -XX:BiasedLockingStartupDelay=0
Summary: Stack allocated VM_EnableBiasedLocking op must be marked as such
Reviewed-by: xlu, acorn, never, dholmes

     1 /*
     2  * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    20  * CA 95054 USA or visit www.sun.com if you need additional information or
    21  * have any questions.
    22  *
    23  */
    25 // Register function to be called by before_exit
    26 extern "C" { void register_on_exit_function(void (*func)(void)) ;}
    28 // Execute code before all handles are released and thread is killed; prologue to vm_exit
    29 extern void before_exit(JavaThread * thread);
    31 // Forced VM exit (i.e, internal error or JVM_Exit)
    32 extern void vm_exit(int code);
    34 // Wrapper for ::exit()
    35 extern void vm_direct_exit(int code);
    37 // Shutdown the VM but do not exit the process
    38 extern void vm_shutdown();
    39 // Shutdown the VM and abort the process
    40 extern void vm_abort();
    42 // Trigger any necessary notification of the VM being shutdown
    43 extern void notify_vm_shutdown();
    45 // VM exit if error occurs during initialization of VM
    46 extern void vm_exit_during_initialization(Handle exception);
    47 extern void vm_exit_during_initialization(symbolHandle exception_name, const char* message);
    48 extern void vm_exit_during_initialization(const char* error, const char* message = NULL);
    49 extern void vm_shutdown_during_initialization(const char* error, const char* message = NULL);
    51 class JDK_Version : AllStatic {
    52   friend class VMStructs;
    53  private:
    54   static jdk_version_info _version_info;
    55   static bool             _pre_jdk16_version;
    56   static int              _jdk_version;  // JDK version number representing the release
    57                                          //  i.e. n in 1.n.x (= jdk_minor_version())
    59  public:
    60   static void initialize();
    61   static int  jdk_major_version() { return JDK_VERSION_MAJOR(_version_info.jdk_version); }
    62   static int  jdk_minor_version() { return JDK_VERSION_MINOR(_version_info.jdk_version); }
    63   static int  jdk_micro_version() { return JDK_VERSION_MICRO(_version_info.jdk_version); }
    64   static int  jdk_build_number()  { return JDK_VERSION_BUILD(_version_info.jdk_version); }
    66   static bool is_pre_jdk16_version()        { return _pre_jdk16_version; }
    67   static bool is_jdk12x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 2; }
    68   static bool is_jdk13x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 3; }
    69   static bool is_jdk14x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 4; }
    70   static bool is_jdk15x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 5; }
    71   static bool is_jdk16x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 6; }
    72   static bool is_jdk17x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 7; }
    74   static bool supports_thread_park_blocker() { return _version_info.thread_park_blocker; }
    76   static bool is_gte_jdk14x_version() {
    77     // Keep the semantics of this that the version number is >= 1.4
    78     assert(is_jdk_version_initialized(), "Not initialized");
    79     return _jdk_version >= 4;
    80   }
    81   static bool is_gte_jdk15x_version() {
    82     // Keep the semantics of this that the version number is >= 1.5
    83     assert(is_jdk_version_initialized(), "Not initialized");
    84     return _jdk_version >= 5;
    85   }
    86   static bool is_gte_jdk16x_version() {
    87     // Keep the semantics of this that the version number is >= 1.6
    88     assert(is_jdk_version_initialized(), "Not initialized");
    89     return _jdk_version >= 6;
    90   }
    92   static bool is_gte_jdk17x_version() {
    93     // Keep the semantics of this that the version number is >= 1.7
    94     assert(is_jdk_version_initialized(), "Not initialized");
    95     return _jdk_version >= 7;
    96   }
    98   static bool is_jdk_version_initialized() {
    99     return _jdk_version > 0;
   100   }
   102   // These methods are defined to deal with pre JDK 1.6 versions
   103   static void set_jdk12x_version() {
   104     assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");
   105     _jdk_version = 2;
   106     _version_info.jdk_version = (1 << 24) | (2 << 16);
   107   }
   108   static void set_jdk13x_version() {
   109     assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");
   110     _jdk_version = 3;
   111     _version_info.jdk_version = (1 << 24) | (3 << 16);
   112   }
   113   static void set_jdk14x_version() {
   114     assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");
   115     _jdk_version = 4;
   116     _version_info.jdk_version = (1 << 24) | (4 << 16);
   117   }
   118   static void set_jdk15x_version() {
   119     assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");
   120     _jdk_version = 5;
   121     _version_info.jdk_version = (1 << 24) | (5 << 16);
   122   }
   123 };

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