/*

 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

// Register function to be called by before_exit

extern "C" { void register_on_exit_function(void (*func)(void)) ;}

// Execute code before all handles are released and thread is killed; prologue to vm_exit

extern void before_exit(JavaThread * thread);

// Forced VM exit (i.e, internal error or JVM_Exit)

extern void vm_exit(int code);

// Wrapper for ::exit()

extern void vm_direct_exit(int code);

// Shutdown the VM but do not exit the process

extern void vm_shutdown();

// Shutdown the VM and abort the process

extern void vm_abort();

// Trigger any necessary notification of the VM being shutdown

extern void notify_vm_shutdown();

// VM exit if error occurs during initialization of VM

extern void vm_exit_during_initialization(Handle exception);

extern void vm_exit_during_initialization(symbolHandle exception_name, const char* message);

extern void vm_exit_during_initialization(const char* error, const char* message = NULL);

extern void vm_shutdown_during_initialization(const char* error, const char* message = NULL);

class JDK_Version : AllStatic {

  friend class VMStructs;

 private:

  static jdk_version_info _version_info;

  static bool             _pre_jdk16_version;

  static int              _jdk_version;  // JDK version number representing the release

                                         //  i.e. n in 1.n.x (= jdk_minor_version())

 public:

  static void initialize();

  static int  jdk_major_version() { return JDK_VERSION_MAJOR(_version_info.jdk_version); }

  static int  jdk_minor_version() { return JDK_VERSION_MINOR(_version_info.jdk_version); }

  static int  jdk_micro_version() { return JDK_VERSION_MICRO(_version_info.jdk_version); }

  static int  jdk_build_number()  { return JDK_VERSION_BUILD(_version_info.jdk_version); }

  static bool is_pre_jdk16_version()        { return _pre_jdk16_version; }

  static bool is_jdk12x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 2; }

  static bool is_jdk13x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 3; }

  static bool is_jdk14x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 4; }

  static bool is_jdk15x_version()           { assert(is_jdk_version_initialized(), "must have been initialized"); return _jdk_version == 5; }

  static bool is_jdk16x_version() {

    if (is_jdk_version_initialized()) {

      return _jdk_version == 6;

    } else {

      assert(is_pre_jdk16_version(), "must have been initialized");

      return false;

    }

  }

  static bool is_jdk17x_version() {

    if (is_jdk_version_initialized()) {

      return _jdk_version == 7;

    } else {

      assert(is_pre_jdk16_version(), "must have been initialized");

      return false;

    }

  }

  static bool supports_thread_park_blocker() { return _version_info.thread_park_blocker; }

  static bool is_gte_jdk14x_version() {

    // Keep the semantics of this that the version number is >= 1.4

    assert(is_jdk_version_initialized(), "Not initialized");

    return _jdk_version >= 4;

  }

  static bool is_gte_jdk15x_version() {

    // Keep the semantics of this that the version number is >= 1.5

    assert(is_jdk_version_initialized(), "Not initialized");

    return _jdk_version >= 5;

  }

  static bool is_gte_jdk16x_version() {

    // Keep the semantics of this that the version number is >= 1.6

    if (is_jdk_version_initialized()) {

      return _jdk_version >= 6;

    } else {

      assert(is_pre_jdk16_version(), "Not initialized");

      return false;

    }

  }

  static bool is_gte_jdk17x_version() {

    // Keep the semantics of this that the version number is >= 1.7

    if (is_jdk_version_initialized()) {

      return _jdk_version >= 7;

    } else {

      assert(is_pre_jdk16_version(), "Not initialized");

      return false;

    }

  }

  static bool is_jdk_version_initialized() {

    return _jdk_version > 0;

  }

  // These methods are defined to deal with pre JDK 1.6 versions

  static void set_jdk12x_version() {

    assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");

    _jdk_version = 2;

    _version_info.jdk_version = (1 << 24) | (2 << 16);

  }

  static void set_jdk13x_version() {

    assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");

    _jdk_version = 3;

    _version_info.jdk_version = (1 << 24) | (3 << 16);

  }

  static void set_jdk14x_version() {

    assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");

    _jdk_version = 4;

    _version_info.jdk_version = (1 << 24) | (4 << 16);

  }

  static void set_jdk15x_version() {

    assert(_pre_jdk16_version && !is_jdk_version_initialized(), "must not initialize");

    _jdk_version = 5;

    _version_info.jdk_version = (1 << 24) | (5 << 16);

  }

};