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8256299: Implement JEP 396: Strongly Encapsulate JDK Internals by Default

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Co-authored-by: Alan Bateman <alanb@openjdk.org>
Reviewed-by: mchung, alanb
This commit is contained in:
Mark Reinhold 2020-12-08 22:12:24 +00:00
parent c47ab5f6b7
commit ed4c4ee73b
5 changed files with 90 additions and 139 deletions
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16
src/java.base/share/classes/jdk/internal/module/ArchivedBootLayer.java
View file

@ -27,35 +27,27 @@ package jdk.internal.module;
import jdk.internal.misc.CDS;
/**
* Used by ModuleBootstrap for archiving the boot layer and the builder needed to
* set the IllegalAccessLogger.
* Used by ModuleBootstrap for archiving the boot layer.
*/
class ArchivedBootLayer {
private static ArchivedBootLayer archivedBootLayer;
private final ModuleLayer bootLayer;
private final IllegalAccessLogger.Builder builder;
private ArchivedBootLayer(ModuleLayer bootLayer,
IllegalAccessLogger.Builder builder) {
private ArchivedBootLayer(ModuleLayer bootLayer) {
this.bootLayer = bootLayer;
this.builder = builder;
}
ModuleLayer bootLayer() {
return bootLayer;
}
IllegalAccessLogger.Builder illegalAccessLoggerBuilder() {
return builder;
}
static ArchivedBootLayer get() {
return archivedBootLayer;
}
static void archive(ModuleLayer layer, IllegalAccessLogger.Builder builder) {
archivedBootLayer = new ArchivedBootLayer(layer, builder);
static void archive(ModuleLayer layer) {
archivedBootLayer = new ArchivedBootLayer(layer);
}
static {

28
src/java.base/share/classes/jdk/internal/module/ArchivedModuleGraph.java
View file

@ -24,8 +24,6 @@
*/
package jdk.internal.module;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;
@ -33,7 +31,7 @@ import jdk.internal.misc.CDS;
/**
* Used by ModuleBootstrap for archiving the configuration for the boot layer,
* the system module finder, and the maps used to create the IllegalAccessLogger.
* and the system module finder.
*/
class ArchivedModuleGraph {
private static ArchivedModuleGraph archivedModuleGraph;
@ -43,23 +41,17 @@ class ArchivedModuleGraph {
private final ModuleFinder finder;
private final Configuration configuration;
private final Function<String, ClassLoader> classLoaderFunction;
private final Map<String, Set<String>> concealedPackagesToOpen;
private final Map<String, Set<String>> exportedPackagesToOpen;
private ArchivedModuleGraph(boolean hasSplitPackages,
boolean hasIncubatorModules,
ModuleFinder finder,
Configuration configuration,
Function<String, ClassLoader> classLoaderFunction,
Map<String, Set<String>> concealedPackagesToOpen,
Map<String, Set<String>> exportedPackagesToOpen) {
Function<String, ClassLoader> classLoaderFunction) {
this.hasSplitPackages = hasSplitPackages;
this.hasIncubatorModules = hasIncubatorModules;
this.finder = finder;
this.configuration = configuration;
this.classLoaderFunction = classLoaderFunction;
this.concealedPackagesToOpen = concealedPackagesToOpen;
this.exportedPackagesToOpen = exportedPackagesToOpen;
}
ModuleFinder finder() {
@ -74,14 +66,6 @@ class ArchivedModuleGraph {
return classLoaderFunction;
}
Map<String, Set<String>> concealedPackagesToOpen() {
return concealedPackagesToOpen;
}
Map<String, Set<String>> exportedPackagesToOpen() {
return exportedPackagesToOpen;
}
boolean hasSplitPackages() {
return hasSplitPackages;
}
@ -110,16 +94,12 @@ class ArchivedModuleGraph {
boolean hasIncubatorModules,
ModuleFinder finder,
Configuration configuration,
Function<String, ClassLoader> classLoaderFunction,
Map<String, Set<String>> concealedPackagesToOpen,
Map<String, Set<String>> exportedPackagesToOpen) {
Function<String, ClassLoader> classLoaderFunction) {
archivedModuleGraph = new ArchivedModuleGraph(hasSplitPackages,
hasIncubatorModules,
finder,
configuration,
classLoaderFunction,
concealedPackagesToOpen,
exportedPackagesToOpen);
classLoaderFunction);
}
static {

103
src/java.base/share/classes/jdk/internal/module/ModuleBootstrap.java
View file

@ -141,14 +141,14 @@ public final class ModuleBootstrap {
private static boolean canUseArchivedBootLayer() {
return getProperty("jdk.module.upgrade.path") == null &&
getProperty("jdk.module.path") == null &&
getProperty("jdk.module.patch.0") == null && // --patch-module
getProperty("jdk.module.main") == null &&
getProperty("jdk.module.addmods.0") == null && // --add-modules
getProperty("jdk.module.limitmods") == null &&
getProperty("jdk.module.patch.0") == null && // --patch-module
getProperty("jdk.module.main") == null && // --module
getProperty("jdk.module.addmods.0") == null && // --add-modules
getProperty("jdk.module.limitmods") == null && // --limit-modules
getProperty("jdk.module.addreads.0") == null && // --add-reads
getProperty("jdk.module.addexports.0") == null && // --add-exports
getProperty("jdk.module.addopens.0") == null && // --add-opens
getProperty("jdk.module.illegalAccess") == null;
getProperty("jdk.module.illegalAccess") == null; // --illegal-access
}
/**
@ -172,12 +172,6 @@ public final class ModuleBootstrap {
// assume boot layer has at least one module providing a service
// that is mapped to the application class loader.
JLA.bindToLoader(bootLayer, ClassLoaders.appClassLoader());
// IllegalAccessLogger needs to be set
var illegalAccessLoggerBuilder = archivedBootLayer.illegalAccessLoggerBuilder();
if (illegalAccessLoggerBuilder != null) {
illegalAccessLoggerBuilder.complete();
}
} else {
bootLayer = boot2();
}
@ -192,10 +186,10 @@ public final class ModuleBootstrap {
ModuleFinder upgradeModulePath = finderFor("jdk.module.upgrade.path");
ModuleFinder appModulePath = finderFor("jdk.module.path");
boolean isPatched = patcher.hasPatches();
String mainModule = System.getProperty("jdk.module.main");
Set<String> addModules = addModules();
Set<String> limitModules = limitModules();
String illegalAccess = getAndRemoveProperty("jdk.module.illegalAccess");
PrintStream traceOutput = null;
String trace = getAndRemoveProperty("jdk.module.showModuleResolution");
@ -227,7 +221,8 @@ public final class ModuleBootstrap {
&& !haveModulePath
&& addModules.isEmpty()
&& limitModules.isEmpty()
&& !isPatched) {
&& !isPatched
&& illegalAccess == null) {
systemModuleFinder = archivedModuleGraph.finder();
hasSplitPackages = archivedModuleGraph.hasSplitPackages();
hasIncubatorModules = archivedModuleGraph.hasIncubatorModules();
@ -464,21 +459,15 @@ public final class ModuleBootstrap {
addExtraReads(bootLayer);
boolean extraExportsOrOpens = addExtraExportsAndOpens(bootLayer);
Map<String, Set<String>> concealedPackagesToOpen;
Map<String, Set<String>> exportedPackagesToOpen;
if (archivedModuleGraph != null) {
concealedPackagesToOpen = archivedModuleGraph.concealedPackagesToOpen();
exportedPackagesToOpen = archivedModuleGraph.exportedPackagesToOpen();
} else {
concealedPackagesToOpen = systemModules.concealedPackagesToOpen();
exportedPackagesToOpen = systemModules.exportedPackagesToOpen();
}
IllegalAccessLogger.Builder builder =
addIllegalAccess(upgradeModulePath,
concealedPackagesToOpen,
exportedPackagesToOpen,
if (illegalAccess != null) {
assert systemModules != null;
addIllegalAccess(illegalAccess,
systemModules,
upgradeModulePath,
bootLayer,
extraExportsOrOpens);
}
Counters.add("jdk.module.boot.7.adjustModulesTime");
// save module finders for later use
@ -495,12 +484,9 @@ public final class ModuleBootstrap {
hasIncubatorModules,
systemModuleFinder,
cf,
clf,
concealedPackagesToOpen,
exportedPackagesToOpen);
clf);
if (!hasSplitPackages && !hasIncubatorModules) {
ArchivedBootLayer.archive(bootLayer, builder);
ArchivedBootLayer.archive(bootLayer);
}
}
@ -794,38 +780,32 @@ public final class ModuleBootstrap {
}
/**
* Process the --illegal-access option (and its default) to open packages
* of system modules in the boot layer to code in unnamed modules.
* Process the --illegal-access option to open packages of system modules
* in the boot layer to code in unnamed modules.
*/
private static IllegalAccessLogger.Builder
addIllegalAccess(ModuleFinder upgradeModulePath,
Map<String, Set<String>> concealedPackagesToOpen,
Map<String, Set<String>> exportedPackagesToOpen,
ModuleLayer bootLayer,
boolean extraExportsOrOpens) {
String value = getAndRemoveProperty("jdk.module.illegalAccess");
IllegalAccessLogger.Mode mode = IllegalAccessLogger.Mode.ONESHOT;
if (value != null) {
switch (value) {
case "deny":
return null;
case "permit":
break;
case "warn":
mode = IllegalAccessLogger.Mode.WARN;
break;
case "debug":
mode = IllegalAccessLogger.Mode.DEBUG;
break;
default:
fail("Value specified to --illegal-access not recognized:"
+ " '" + value + "'");
return null;
}
}
IllegalAccessLogger.Builder builder
= new IllegalAccessLogger.Builder(mode, System.err);
private static void addIllegalAccess(String illegalAccess,
SystemModules systemModules,
ModuleFinder upgradeModulePath,
ModuleLayer bootLayer,
boolean extraExportsOrOpens) {
if (illegalAccess.equals("deny"))
return; // nothing to do
IllegalAccessLogger.Mode mode = switch (illegalAccess) {
case "permit" -> IllegalAccessLogger.Mode.ONESHOT;
case "warn" -> IllegalAccessLogger.Mode.WARN;
case "debug" -> IllegalAccessLogger.Mode.DEBUG;
default -> {
fail("Value specified to --illegal-access not recognized:"
+ " '" + illegalAccess + "'");
yield null;
}
};
var builder = new IllegalAccessLogger.Builder(mode, System.err);
Map<String, Set<String>> concealedPackagesToOpen = systemModules.concealedPackagesToOpen();
Map<String, Set<String>> exportedPackagesToOpen = systemModules.exportedPackagesToOpen();
if (concealedPackagesToOpen.isEmpty() && exportedPackagesToOpen.isEmpty()) {
// need to generate (exploded build)
IllegalAccessMaps maps = IllegalAccessMaps.generate(limitedFinder());
@ -887,7 +867,6 @@ public final class ModuleBootstrap {
}
builder.complete();
return builder;
}
/**