< prev index next >

src/java.base/share/classes/jdk/internal/module/ArchivedModuleGraph.java

Print this page
rev 52800 : 8214858: Improve module graph archiving
Reviewed-by: alanb


  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.internal.module;
  27 
  28 import java.lang.module.Configuration;
  29 import java.lang.module.ModuleFinder;

  30 import java.util.Objects;


  31 import jdk.internal.misc.VM;
  32 
  33 /**
  34  * Used by ModuleBootstrap to obtain the archived system modules and finder.
  35  */
  36 final class ArchivedModuleGraph {
  37     private static String archivedMainModule;
  38     private static SystemModules archivedSystemModules;
  39     private static ModuleFinder archivedModuleFinder;
  40     private static Configuration archivedConfiguration;
  41 
  42     private final SystemModules systemModules;


  43     private final ModuleFinder finder;
  44     private final Configuration configuration;


  45 
  46     private ArchivedModuleGraph(SystemModules modules,


  47                                 ModuleFinder finder,
  48                                 Configuration configuration) {
  49         this.systemModules = modules;




  50         this.finder = finder;
  51         this.configuration = configuration;
  52     }
  53 
  54     SystemModules systemModules() {
  55         return systemModules;
  56     }
  57 
  58     ModuleFinder finder() {
  59         return finder;
  60     }
  61 
  62     Configuration configuration() {
  63         return configuration;
  64     }
  65 
  66     // A factory method that ModuleBootstrap can use to obtain the
  67     // ArchivedModuleGraph.

















  68     static ArchivedModuleGraph get(String mainModule) {
  69         if (Objects.equals(mainModule, archivedMainModule)
  70                 && archivedSystemModules != null
  71                 && archivedModuleFinder != null
  72                 && archivedConfiguration != null) {
  73             return new ArchivedModuleGraph(archivedSystemModules,
  74                                            archivedModuleFinder,
  75                                            archivedConfiguration);
  76         } else {
  77             return null;
  78         }
  79     }
  80 
  81     // Used at CDS dump time


  82     static void archive(String mainModule,
  83                         SystemModules systemModules,

  84                         ModuleFinder finder,
  85                         Configuration configuration) {
  86         if (archivedMainModule != null)


  87             throw new UnsupportedOperationException();
  88         archivedMainModule = mainModule;
  89         archivedSystemModules = systemModules;
  90         archivedModuleFinder = finder;
  91         archivedConfiguration = configuration;




  92     }
  93 
  94     static {
  95         VM.initializeFromArchive(ArchivedModuleGraph.class);
  96     }
  97 }


  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.internal.module;
  27 
  28 import java.lang.module.Configuration;
  29 import java.lang.module.ModuleFinder;
  30 import java.util.Map;
  31 import java.util.Objects;
  32 import java.util.Set;
  33 
  34 import jdk.internal.misc.VM;
  35 
  36 /**
  37  * Used by ModuleBootstrap to obtain the archived system modules and finder.
  38  */
  39 final class ArchivedModuleGraph {
  40     private static ArchivedModuleGraph archivedModuleGraph;



  41 
  42     private final String mainModule;
  43     private final boolean hasSplitPackages;
  44     private final boolean hasIncubatorModules;
  45     private final ModuleFinder finder;
  46     private final Configuration configuration;
  47     private final Map<String, Set<String>> concealedPackagesToOpen;
  48     private final Map<String, Set<String>> exportedPackagesToOpen;
  49 
  50     private ArchivedModuleGraph(String mainModule,
  51                                 boolean hasSplitPackages,
  52                                 boolean hasIncubatorModules,
  53                                 ModuleFinder finder,
  54                                 Configuration configuration,
  55                                 Map<String, Set<String>> concealedPackagesToOpen,
  56                                 Map<String, Set<String>> exportedPackagesToOpen) {
  57         this.mainModule = mainModule;
  58         this.hasSplitPackages = hasSplitPackages;
  59         this.hasIncubatorModules = hasIncubatorModules;
  60         this.finder = finder;
  61         this.configuration = configuration;
  62         this.concealedPackagesToOpen = concealedPackagesToOpen;
  63         this.exportedPackagesToOpen = exportedPackagesToOpen;


  64     }
  65 
  66     ModuleFinder finder() {
  67         return finder;
  68     }
  69 
  70     Configuration configuration() {
  71         return configuration;
  72     }
  73 
  74     Map<String, Set<String>> concealedPackagesToOpen() {
  75         return concealedPackagesToOpen;
  76     }
  77 
  78     Map<String, Set<String>> exportedPackagesToOpen() {
  79         return exportedPackagesToOpen;
  80     }
  81 
  82     boolean hasSplitPackages() {
  83         return hasSplitPackages;
  84     }
  85 
  86     boolean hasIncubatorModules() {
  87         return hasIncubatorModules;
  88     }
  89 
  90     /**
  91      * Returns the ArchivedModuleGraph for the given initial module.
  92      */
  93     static ArchivedModuleGraph get(String mainModule) {
  94         ArchivedModuleGraph graph = archivedModuleGraph;
  95         if (graph != null && Objects.equals(mainModule, graph.mainModule)) {
  96             return graph;




  97         } else {
  98             return null;
  99         }
 100     }
 101 
 102     /**
 103      * Archive the module graph for the given initial module.
 104      */
 105     static void archive(String mainModule,
 106                         boolean hasSplitPackages,
 107                         boolean hasIncubatorModules,
 108                         ModuleFinder finder,
 109                         Configuration configuration,
 110                         Map<String, Set<String>> concealedPackagesToOpen,
 111                         Map<String, Set<String>> exportedPackagesToOpen) {
 112         if (mainModule != null) {
 113             throw new UnsupportedOperationException();
 114         }
 115         archivedModuleGraph = new ArchivedModuleGraph(mainModule,
 116                                                       hasSplitPackages,
 117                                                       hasIncubatorModules,
 118                                                       finder,
 119                                                       configuration,
 120                                                       concealedPackagesToOpen,
 121                                                       exportedPackagesToOpen);
 122     }
 123 
 124     static {
 125         VM.initializeFromArchive(ArchivedModuleGraph.class);
 126     }
 127 }
< prev index next >