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1 /* |
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2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_RUNTIME_JAVA_HPP |
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26 #define SHARE_VM_RUNTIME_JAVA_HPP |
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27 |
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28 #include "runtime/os.hpp" |
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29 |
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30 // Execute code before all handles are released and thread is killed; prologue to vm_exit |
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31 extern void before_exit(JavaThread * thread); |
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32 |
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33 // Forced VM exit (i.e, internal error or JVM_Exit) |
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34 extern void vm_exit(int code); |
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35 |
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36 // Wrapper for ::exit() |
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37 extern void vm_direct_exit(int code); |
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38 |
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39 // Shutdown the VM but do not exit the process |
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40 extern void vm_shutdown(); |
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41 // Shutdown the VM and abort the process |
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42 extern void vm_abort(bool dump_core=true); |
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43 |
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44 // Trigger any necessary notification of the VM being shutdown |
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45 extern void notify_vm_shutdown(); |
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46 |
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47 // VM exit if error occurs during initialization of VM |
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48 extern void vm_exit_during_initialization(); |
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49 extern void vm_exit_during_initialization(Handle exception); |
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50 extern void vm_exit_during_initialization(Symbol* exception_name, const char* message); |
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51 extern void vm_exit_during_initialization(const char* error, const char* message = NULL); |
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52 extern void vm_shutdown_during_initialization(const char* error, const char* message = NULL); |
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53 |
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54 /** |
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55 * With the integration of the changes to handle the version string |
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56 * as defined by JEP-223, most of the code related to handle the version |
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57 * string prior to JDK 1.6 was removed (partial initialization) |
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58 */ |
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59 class JDK_Version VALUE_OBJ_CLASS_SPEC { |
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60 friend class VMStructs; |
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61 friend class Universe; |
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62 friend void JDK_Version_init(); |
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63 private: |
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64 |
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65 static JDK_Version _current; |
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66 static const char* _runtime_name; |
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67 static const char* _runtime_version; |
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68 |
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69 uint8_t _major; |
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70 uint8_t _minor; |
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71 uint8_t _security; |
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72 uint8_t _patch; |
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73 uint8_t _build; |
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74 |
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75 bool _thread_park_blocker; |
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76 bool _post_vm_init_hook_enabled; |
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77 |
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78 bool is_valid() const { |
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79 return (_major != 0); |
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80 } |
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81 |
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82 // initializes or partially initializes the _current static field |
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83 static void initialize(); |
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84 |
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85 public: |
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86 |
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87 JDK_Version() : _major(0), _minor(0), _security(0), _patch(0), _build(0), |
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88 _thread_park_blocker(false), _post_vm_init_hook_enabled(false) |
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89 {} |
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90 |
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91 JDK_Version(uint8_t major, uint8_t minor = 0, uint8_t security = 0, |
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92 uint8_t patch = 0, uint8_t build = 0, |
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93 bool thread_park_blocker = false, bool post_vm_init_hook_enabled = false) : |
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94 _major(major), _minor(minor), _security(security), _patch(patch), _build(build), |
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95 _thread_park_blocker(thread_park_blocker), |
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96 _post_vm_init_hook_enabled(post_vm_init_hook_enabled) |
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97 {} |
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98 |
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99 // Returns the current running JDK version |
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100 static JDK_Version current() { return _current; } |
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101 |
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102 // Factory methods for convenience |
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103 static JDK_Version jdk(uint8_t m) { |
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104 return JDK_Version(m); |
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105 } |
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106 |
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107 static JDK_Version undefined() { |
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108 return JDK_Version(0); |
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109 } |
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110 |
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111 bool is_undefined() const { |
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112 return _major == 0; |
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113 } |
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114 |
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115 uint8_t major_version() const { return _major; } |
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116 uint8_t minor_version() const { return _minor; } |
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117 uint8_t security_version() const { return _security; } |
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118 uint8_t patch_version() const { return _patch; } |
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119 uint8_t build_number() const { return _build; } |
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120 |
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121 bool supports_thread_park_blocker() const { |
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122 return _thread_park_blocker; |
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123 } |
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124 bool post_vm_init_hook_enabled() const { |
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125 return _post_vm_init_hook_enabled; |
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126 } |
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127 |
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128 // Performs a full ordering comparison using all fields (patch, build, etc.) |
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129 int compare(const JDK_Version& other) const; |
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130 |
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131 /** |
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132 * Performs comparison using only the major version, returning negative |
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133 * if the major version of 'this' is less than the parameter, 0 if it is |
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134 * equal, and a positive value if it is greater. |
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135 */ |
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136 int compare_major(int version) const { |
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137 return major_version() - version; |
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138 } |
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139 |
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140 void to_string(char* buffer, size_t buflen) const; |
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141 |
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142 static const char* runtime_name() { |
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143 return _runtime_name; |
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144 } |
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145 static void set_runtime_name(const char* name) { |
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146 _runtime_name = name; |
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147 } |
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148 |
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149 static const char* runtime_version() { |
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150 return _runtime_version; |
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151 } |
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152 static void set_runtime_version(const char* version) { |
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153 _runtime_version = version; |
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154 } |
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155 |
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156 }; |
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157 |
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158 #endif // SHARE_VM_RUNTIME_JAVA_HPP |