Lois Foltan 92eb334c91 8159262: Walking PackageEntry Export and ModuleEntry Reads Must Occur Only When Neccessary And Wait Until ClassLoader's Aliveness Determined
Fixed an issue in class unloading to delay walk until class loader's aliveness is determined of modularity lists to remove dead modules

Reviewed-by: coleenp, dholmes, sspitsyn, zgu
2016-06-28 10:11:01 -04:00

85 lines
3.3 KiB
Java

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/**
* @test
* @bug 8159262
* @summary layers over the boot layer are repeatedly created, during this iteration, GCs are forced to verify correct walk of module and package lists.
* @modules java.base/jdk.internal.misc
* @library /testlibrary /test/lib
* @compile ../CompilerUtils.java
* @build ModuleStressGC
* @run main/othervm ModuleStressGC
*/
import java.nio.file.Path;
import java.nio.file.Paths;
import jdk.test.lib.*;
public class ModuleStressGC {
private static final String TEST_SRC = System.getProperty("test.src");
private static final String TEST_CLASSES = System.getProperty("test.classes");
private static final Path SRC_DIR = Paths.get(TEST_SRC, "src");
private static final Path MODS_DIR = Paths.get(TEST_CLASSES, "mods");
/**
* Compile two module definitions used by the test, jdk.test and jdk.translet.
*/
public static void main(String[] args) throws Exception {
boolean compiled;
// Compile module jdk.test declaration
compiled = CompilerUtils.compile(
SRC_DIR.resolve("jdk.test"),
MODS_DIR.resolve("jdk.test"));
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.test");
}
// Compile module jdk.translet declaration
compiled = CompilerUtils.compile(
SRC_DIR.resolve("jdk.translet"),
MODS_DIR.resolve("jdk.translet"),
"-XaddExports:jdk.test/test=jdk.translet",
"-mp", MODS_DIR.toString());
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.translet");
}
// Sanity check that the test, jdk.test/test/MainGC.java,
// correctly walks module jdk.test's reads list and package
// test's, defined to module jdk.translet, export list at
// GC safepoints.
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-Xlog:modules=trace",
"-mp", MODS_DIR.toString(),
"-m", "jdk.test/test.MainGC");
OutputAnalyzer oa = new OutputAnalyzer(pb.start());
oa.shouldContain("package test defined in module jdk.test, exports list being walked")
.shouldContain("module jdk.test reads list being walked")
.shouldHaveExitValue(0);
}
}