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PlatformDependent static initialization ExceptionInInitializerError

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Motivation:
PlatformDependent allows some exceptions to escape during static initialization. If an exception escapes it will be translated into a java.lang.ExceptionInInitializerError and render the application unable to run.

Modifications:
- Make sure to catch Throwable during static initialization.

Result:
PlatformDependent static initialization doesn't result in java.lang.ExceptionInInitializerError.
This commit is contained in:
Scott Mitchell 2016-01-19 14:53:55 -08:00
parent 391a411264
commit 7494e84208
2 changed files with 30 additions and 24 deletions
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16
common/src/main/java/io/netty/util/internal/PlatformDependent.java
View File

@ -657,7 +657,7 @@ public final class PlatformDependent {
try {
Class.forName("android.app.Application", false, getSystemClassLoader());
android = true;
} catch (Exception e) {
} catch (Throwable ignored) {
// Failed to load the class uniquely available in Android.
android = false;
}
@ -704,7 +704,7 @@ public final class PlatformDependent {
// Ignore
}
}
} catch (Exception e) {
} catch (Throwable ignored) {
// Failed to run the command.
uid = null;
} finally {
@ -785,7 +785,7 @@ public final class PlatformDependent {
Class.forName("java.time.Clock", false, getClassLoader(Object.class));
javaVersion = 8;
break;
} catch (Exception e) {
} catch (Throwable ignored) {
// Ignore
}
@ -793,7 +793,7 @@ public final class PlatformDependent {
Class.forName("java.util.concurrent.LinkedTransferQueue", false, getClassLoader(BlockingQueue.class));
javaVersion = 7;
break;
} catch (Exception e) {
} catch (Throwable ignored) {
// Ignore
}
@ -838,7 +838,7 @@ public final class PlatformDependent {
boolean hasUnsafe = PlatformDependent0.hasUnsafe();
logger.debug("sun.misc.Unsafe: {}", hasUnsafe ? "available" : "unavailable");
return hasUnsafe;
} catch (Throwable t) {
} catch (Throwable ignored) {
// Probably failed to initialize PlatformDependent0.
return false;
}
@ -851,7 +851,7 @@ public final class PlatformDependent {
Class<?> vmClass = Class.forName("sun.misc.VM", true, getSystemClassLoader());
Method m = vmClass.getDeclaredMethod("maxDirectMemory");
maxDirectMemory = ((Number) m.invoke(null)).longValue();
} catch (Throwable t) {
} catch (Throwable ignored) {
// Ignore
}
@ -891,7 +891,7 @@ public final class PlatformDependent {
}
break;
}
} catch (Throwable t) {
} catch (Throwable ignored) {
// Ignore
}
@ -976,7 +976,7 @@ public final class PlatformDependent {
return f;
}
}
} catch (Exception ignored) {
} catch (Throwable ignored) {
// Environment variable inaccessible
}

12
common/src/main/java/io/netty/util/internal/PlatformDependent0.java
View File

@ -136,7 +136,9 @@ final class PlatformDependent0 {
UNALIGNED = unaligned;
logger.debug("java.nio.Bits.unaligned: {}", UNALIGNED);
Field stringValueField = AccessController.doPrivileged(new PrivilegedAction<Field>() {
Field stringValueField = null;
try {
stringValueField = AccessController.doPrivileged(new PrivilegedAction<Field>() {
@Override
public Field run() {
try {
@ -144,15 +146,19 @@ final class PlatformDependent0 {
f.setAccessible(true);
return f;
} catch (NoSuchFieldException e) {
logger.warn("Failed to find String value array." +
logger.info("Failed to find String value array (please report an issue)." +
"String hash code optimizations are disabled.", e);
} catch (SecurityException e) {
logger.info("No permissions to get String value array." +
logger.debug("No permissions to get String value array." +
"String hash code optimizations are disabled.", e);
}
return null;
}
});
} catch (Throwable t) {
logger.debug("AccessController.doPrivileged failed to get String value array." +
"String hash code optimizations are disabled.", t);
}
STRING_VALUE_FIELD_OFFSET = stringValueField == null ?
-1 : UNSAFE.objectFieldOffset(stringValueField);
}