Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/java.hpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
Summary: Add checksum verification.
Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
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| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | a1b8cf9cf970 |
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| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_JAVA_HPP |
| 26 #define SHARE_VM_RUNTIME_JAVA_HPP | |
| 27 | |
| 28 #include "runtime/os.hpp" | |
| 29 | |
| 0 | 30 // Register function to be called by before_exit |
| 31 extern "C" { void register_on_exit_function(void (*func)(void)) ;} | |
| 32 | |
| 33 // Execute code before all handles are released and thread is killed; prologue to vm_exit | |
| 34 extern void before_exit(JavaThread * thread); | |
| 35 | |
| 36 // Forced VM exit (i.e, internal error or JVM_Exit) | |
| 37 extern void vm_exit(int code); | |
| 38 | |
| 39 // Wrapper for ::exit() | |
| 40 extern void vm_direct_exit(int code); | |
| 41 | |
| 42 // Shutdown the VM but do not exit the process | |
| 43 extern void vm_shutdown(); | |
| 44 // Shutdown the VM and abort the process | |
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45 extern void vm_abort(bool dump_core=true); |
| 0 | 46 |
| 47 // Trigger any necessary notification of the VM being shutdown | |
| 48 extern void notify_vm_shutdown(); | |
| 49 | |
| 50 // VM exit if error occurs during initialization of VM | |
| 51 extern void vm_exit_during_initialization(Handle exception); | |
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52 extern void vm_exit_during_initialization(Symbol* exception_name, const char* message); |
| 0 | 53 extern void vm_exit_during_initialization(const char* error, const char* message = NULL); |
| 54 extern void vm_shutdown_during_initialization(const char* error, const char* message = NULL); | |
| 55 | |
| 242 | 56 /** |
| 57 * Discovering the JDK_Version during initialization is tricky when the | |
| 58 * running JDK is less than JDK6. For JDK6 and greater, a "GetVersion" | |
| 59 * function exists in libjava.so and we simply call it during the | |
| 60 * 'initialize()' call to find the version. For JDKs with version < 6, no | |
| 61 * such call exists and we have to probe the JDK in order to determine | |
| 62 * the exact version. This probing cannot happen during late in | |
| 63 * the VM initialization process so there's a period of time during | |
| 64 * initialization when we don't know anything about the JDK version other than | |
| 65 * that it less than version 6. This is the "partially initialized" time, | |
| 66 * when we can answer only certain version queries (such as, is the JDK | |
| 67 * version greater than 5? Answer: no). Once the JDK probing occurs, we | |
| 68 * know the version and are considered fully initialized. | |
| 69 */ | |
| 70 class JDK_Version VALUE_OBJ_CLASS_SPEC { | |
| 0 | 71 friend class VMStructs; |
| 242 | 72 friend class Universe; |
| 73 friend void JDK_Version_init(); | |
| 0 | 74 private: |
| 242 | 75 |
| 76 static JDK_Version _current; | |
| 6181 | 77 static const char* _runtime_name; |
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78 static const char* _runtime_version; |
| 242 | 79 |
| 80 // In this class, we promote the minor version of release to be the | |
| 81 // major version for releases >= 5 in anticipation of the JDK doing the | |
| 82 // same thing. For example, we represent "1.5.0" as major version 5 (we | |
| 83 // drop the leading 1 and use 5 as the 'major'). | |
| 84 | |
| 85 uint8_t _major; | |
| 86 uint8_t _minor; | |
| 87 uint8_t _micro; | |
| 88 uint8_t _update; | |
| 89 uint8_t _special; | |
| 90 uint8_t _build; | |
| 91 | |
| 92 // If partially initialized, the above fields are invalid and we know | |
| 93 // that we're less than major version 6. | |
| 94 bool _partially_initialized; | |
| 95 | |
| 96 bool _thread_park_blocker; | |
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97 bool _pending_list_uses_discovered_field; |
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98 bool _post_vm_init_hook_enabled; |
| 242 | 99 |
| 100 bool is_valid() const { | |
| 101 return (_major != 0 || _partially_initialized); | |
| 102 } | |
| 103 | |
| 104 // initializes or partially initializes the _current static field | |
| 105 static void initialize(); | |
| 106 | |
| 107 // Completes initialization for a pre-JDK6 version. | |
| 108 static void fully_initialize(uint8_t major, uint8_t minor = 0, | |
| 109 uint8_t micro = 0, uint8_t update = 0); | |
| 0 | 110 |
| 111 public: | |
| 242 | 112 |
| 113 // Returns true if the the current version has only been partially initialized | |
| 114 static bool is_partially_initialized() { | |
| 115 return _current._partially_initialized; | |
| 116 } | |
| 117 | |
| 118 JDK_Version() : _major(0), _minor(0), _micro(0), _update(0), | |
| 119 _special(0), _build(0), _partially_initialized(false), | |
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120 _thread_park_blocker(false), _post_vm_init_hook_enabled(false), |
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121 _pending_list_uses_discovered_field(false) {} |
| 0 | 122 |
| 242 | 123 JDK_Version(uint8_t major, uint8_t minor = 0, uint8_t micro = 0, |
| 124 uint8_t update = 0, uint8_t special = 0, uint8_t build = 0, | |
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125 bool thread_park_blocker = false, bool post_vm_init_hook_enabled = false, |
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126 bool pending_list_uses_discovered_field = false) : |
| 242 | 127 _major(major), _minor(minor), _micro(micro), _update(update), |
| 128 _special(special), _build(build), _partially_initialized(false), | |
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129 _thread_park_blocker(thread_park_blocker), |
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130 _post_vm_init_hook_enabled(post_vm_init_hook_enabled), |
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131 _pending_list_uses_discovered_field(pending_list_uses_discovered_field) {} |
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132 |
| 242 | 133 // Returns the current running JDK version |
| 134 static JDK_Version current() { return _current; } | |
| 135 | |
| 136 // Factory methods for convenience | |
| 137 static JDK_Version jdk(uint8_t m) { | |
| 138 return JDK_Version(m); | |
| 139 } | |
| 140 | |
| 141 static JDK_Version jdk_update(uint8_t major, uint8_t update_number) { | |
| 142 return JDK_Version(major, 0, 0, update_number); | |
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143 } |
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144 |
| 242 | 145 uint8_t major_version() const { return _major; } |
| 146 uint8_t minor_version() const { return _minor; } | |
| 147 uint8_t micro_version() const { return _micro; } | |
| 148 uint8_t update_version() const { return _update; } | |
| 149 uint8_t special_update_version() const { return _special; } | |
| 150 uint8_t build_number() const { return _build; } | |
| 151 | |
| 152 bool supports_thread_park_blocker() const { | |
| 153 return _thread_park_blocker; | |
| 154 } | |
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155 bool post_vm_init_hook_enabled() const { |
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156 return _post_vm_init_hook_enabled; |
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157 } |
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158 // For compatibility wrt pre-4965777 JDK's |
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159 bool pending_list_uses_discovered_field() const { |
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160 return _pending_list_uses_discovered_field; |
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161 } |
| 242 | 162 |
| 163 // Performs a full ordering comparison using all fields (update, build, etc.) | |
| 164 int compare(const JDK_Version& other) const; | |
| 165 | |
| 166 /** | |
| 167 * Performs comparison using only the major version, returning negative | |
| 168 * if the major version of 'this' is less than the parameter, 0 if it is | |
| 169 * equal, and a positive value if it is greater. | |
| 170 */ | |
| 171 int compare_major(int version) const { | |
| 172 if (_partially_initialized) { | |
| 173 if (version >= 6) { | |
| 174 return -1; | |
| 175 } else { | |
| 176 assert(false, "Can't make this comparison during init time"); | |
| 177 return -1; // conservative | |
| 178 } | |
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179 } else { |
| 242 | 180 return major_version() - version; |
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181 } |
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182 } |
| 0 | 183 |
| 242 | 184 void to_string(char* buffer, size_t buflen) const; |
| 185 | |
| 6181 | 186 static const char* runtime_name() { |
| 187 return _runtime_name; | |
| 188 } | |
| 189 static void set_runtime_name(const char* name) { | |
| 190 _runtime_name = name; | |
| 191 } | |
| 192 | |
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193 static const char* runtime_version() { |
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194 return _runtime_version; |
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195 } |
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196 static void set_runtime_version(const char* version) { |
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197 _runtime_version = version; |
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198 } |
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199 |
| 242 | 200 // Convenience methods for queries on the current major/minor version |
| 201 static bool is_jdk12x_version() { | |
| 202 return current().compare_major(2) == 0; | |
| 203 } | |
| 204 | |
| 205 static bool is_jdk13x_version() { | |
| 206 return current().compare_major(3) == 0; | |
| 207 } | |
| 208 | |
| 209 static bool is_jdk14x_version() { | |
| 210 return current().compare_major(4) == 0; | |
| 211 } | |
| 212 | |
| 213 static bool is_jdk15x_version() { | |
| 214 return current().compare_major(5) == 0; | |
| 215 } | |
| 216 | |
| 217 static bool is_jdk16x_version() { | |
| 218 return current().compare_major(6) == 0; | |
| 219 } | |
| 220 | |
| 221 static bool is_jdk17x_version() { | |
| 222 return current().compare_major(7) == 0; | |
| 223 } | |
| 224 | |
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225 static bool is_jdk18x_version() { |
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226 return current().compare_major(8) == 0; |
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227 } |
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228 |
| 242 | 229 static bool is_gte_jdk13x_version() { |
| 230 return current().compare_major(3) >= 0; | |
| 231 } | |
| 0 | 232 |
| 233 static bool is_gte_jdk14x_version() { | |
| 242 | 234 return current().compare_major(4) >= 0; |
| 0 | 235 } |
| 242 | 236 |
| 237 static bool is_gte_jdk15x_version() { | |
| 238 return current().compare_major(5) >= 0; | |
| 239 } | |
| 240 | |
| 0 | 241 static bool is_gte_jdk16x_version() { |
| 242 | 242 return current().compare_major(6) >= 0; |
| 0 | 243 } |
| 244 | |
| 245 static bool is_gte_jdk17x_version() { | |
| 242 | 246 return current().compare_major(7) >= 0; |
| 0 | 247 } |
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248 |
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249 static bool is_gte_jdk18x_version() { |
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250 return current().compare_major(8) >= 0; |
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251 } |
| 0 | 252 }; |
| 1972 | 253 |
| 254 #endif // SHARE_VM_RUNTIME_JAVA_HPP |