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/**
* Copyright 2014 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common;
import java.io.PrintStream;
/**
* @since 2.3.0
*/
public class ExceptionUtils {
public static void dumpStack(final PrintStream out) {
dumpStack(out, 1, -1);
}
public static void dumpStack(final PrintStream out, final int skip, final int depth) {
dumpStack(out, new Exception(""), skip+1, depth);
}
public static void dumpStack(final PrintStream out, final Throwable t, final int skip, final int depth) {
dumpStack(out, t.getStackTrace(), skip, depth);
}
public static void dumpStack(final PrintStream out, final StackTraceElement[] stack, final int skip, final int depth) {
if( null == stack ) {
return;
}
final int maxDepth;
if( 0 > depth ) {
maxDepth = stack.length;
} else {
maxDepth = Math.min(depth+skip, stack.length);
}
for(int i=skip; i<maxDepth; i++) {
out.println(" ["+i+"]: "+stack[i]);
}
}
/** Interface allowing {@link Throwable} specializations to provide their custom stack trace presentation. */
public static interface CustomStackTrace {
/** Custom non-iterative stack dump */
void dumpCauseStack(final PrintStream s, final String causeStr, int causeDepth);
/** Custom {@code printStackTrace} method, similar to {@link Throwable#printStackTrace(PrintStream)}. */
void printStackTrace(final PrintStream s);
}
public static int dumpCause(final PrintStream s, final String causeStr, Throwable cause, int causeDepth) {
for( ; null != cause; cause = cause.getCause() ) {
if( cause instanceof CustomStackTrace ) {
((CustomStackTrace)cause).dumpCauseStack(s, causeStr, causeDepth);
} else {
s.println(causeStr+"["+causeDepth+"] by "+cause.getClass().getSimpleName()+": "+cause.getMessage()+" on thread "+Thread.currentThread().getName());
dumpStack(s, cause.getStackTrace(), 0, -1);
}
causeDepth++;
}
return causeDepth;
}
public static void printStackTrace(final PrintStream s, final Throwable t) {
if( t instanceof CustomStackTrace ) {
((CustomStackTrace)t).printStackTrace(s);
} else {
s.println(t.getClass().getSimpleName()+": "+t.getMessage()+" on thread "+Thread.currentThread().getName());
dumpStack(s, t.getStackTrace(), 0, -1);
dumpCause(s, "Caused", t.getCause(), 1);
}
}
/**
* Dumps a {@link Throwable} in a decorating message including the current thread name,
* and its {@link #dumpStack(PrintStream, StackTraceElement[], int, int) stack trace}.
* <p>
* Implementation will iterate through all {@link Throwable#getCause() causes}.
* </p>
*/
public static void dumpThrowable(final String additionalDescr, final Throwable t) {
System.err.print("Caught "+additionalDescr+" ");
printStackTrace(System.err, t);
}
}
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