com.oracle.svm.core.log

Class FunctionPointerLogHandler

java.lang.Object

com.oracle.svm.core.log.FunctionPointerLogHandler

All Implemented Interfaces:

LogHandlerExtension, org.graalvm.nativeimage.LogHandler

public class FunctionPointerLogHandler
extends Object
implements LogHandlerExtension

A LogHandler that can use provided function pointers for each operation. If a function pointer is missing, it forwards the operation to the delegate set in the constructor.

Constructor Summary

Constructors

Constructor and Description
FunctionPointerLogHandler(org.graalvm.nativeimage.LogHandler delegate)

Method Summary

Modifier and Type	Method and Description
static void	afterParsingVMOptions() Notifies that JNI_CreateJavaVM has finished parsing all JavaVMOptions.
Log	enterFatalContext(org.graalvm.nativeimage.c.function.CodePointer callerIP, String msg, Throwable ex) This method gets called if the VM finds itself in a fatal, non-recoverable error situation.
void	fatalError()
void	flush()
org.graalvm.nativeimage.c.function.CFunctionPointer	getFatalErrorFunctionPointer()
void	log(org.graalvm.nativeimage.c.type.CCharPointer bytes, org.graalvm.word.UnsignedWord length)
static boolean	parseVMOption(String optionString, org.graalvm.nativeimage.c.type.WordPointer extraInfo) Parses a JavaVMOption passed to JNI_CreateJavaVM.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.oracle.svm.core.log.LogHandlerExtension

fatalContext

Constructor Detail

FunctionPointerLogHandler

public FunctionPointerLogHandler(org.graalvm.nativeimage.LogHandler delegate)

Method Detail

log

public void log(org.graalvm.nativeimage.c.type.CCharPointer bytes,
                org.graalvm.word.UnsignedWord length)

Specified by:

log in interface org.graalvm.nativeimage.LogHandler

flush

public void flush()

Specified by:

flush in interface org.graalvm.nativeimage.LogHandler

enterFatalContext

public Log enterFatalContext(org.graalvm.nativeimage.c.function.CodePointer callerIP,
                             String msg,
                             Throwable ex)

Description copied from interface: LogHandlerExtension

This method gets called if the VM finds itself in a fatal, non-recoverable error situation. The implementor returns a non-null Log object if fatal error information should be sent to the log object. Returning null specifies that no further information is to be logged and the VM must immediately call LogHandler.fatalError().

Specified by:

enterFatalContext in interface LogHandlerExtension

Parameters:

callerIP - the address of the call-site where the fatal error occurred

msg - provides optional text that was passed to the fatal error call

ex - provides optional exception object that was passed to the fatal error call

Returns:

the Log object to which fatal logging is sent or null if the VM must not do any further logging before calling LogHandler.fatalError()

fatalError

public void fatalError()

Specified by:

fatalError in interface org.graalvm.nativeimage.LogHandler

getFatalErrorFunctionPointer

public org.graalvm.nativeimage.c.function.CFunctionPointer getFatalErrorFunctionPointer()

parseVMOption

public static boolean parseVMOption(String optionString,
                                    org.graalvm.nativeimage.c.type.WordPointer extraInfo)

Parses a JavaVMOption passed to JNI_CreateJavaVM.

Parameters:

optionString - value of the javaVMOption.optionString field

extraInfo - value of the javaVMOption.extraInfo field

Returns:

true iff the option was consumed by this method

afterParsingVMOptions

public static void afterParsingVMOptions()

Notifies that JNI_CreateJavaVM has finished parsing all JavaVMOptions.