Thanks Andy,
I will work on the method, which is bigger in size and causing this error.
I can try to split the single big method into several small pieces.
Meanwhile these exceptions are very common in my application though the
aspectj instrumentation is very small.
In aspectj source code, where the details of 2 bytes for IFLE and 4 bytes
for GOTO is specified.
How to wider from the initial 2 bytes to 4 bytes. Can i try any
alternative in aspectj front to avoid this error.
Thanks,
Krishna
From:
Andy Clement <andrew.clem...@gmail.com>
To:
aspectj-users@eclipse.org
Date:
09/13/2013 05:14 AM
Subject:
Re: [aspectj-users] Handle Unable to pack method, jump in aspectj
Sent by:
aspectj-users-boun...@eclipse.org
Hi,
> What exactly is happening here, can you share more details on how to
avoid this.
The instructions are being reorganized now that new code has been inserted
by AspectJ. Destinations for branch targets that moved (probably due to
the insertion of advice) are being recomputed. If the jump destination is
a long way away for some instructions it is possible to switch to a 'wide'
version of the instruction to encode the 'further' destination (so use
4bytes instead of 2bytes). If the instruction was a GOTO we could use a
GOTO_W instead. In your case it isn't a goto, it is IFLE (if less than or
equal) and we can't fit the expected destination into the space we have
available to encode the target.
The 'fix' in AspectJ is to dynamically adjust the IFLE to a nearby branch
destination and then use a GOTO_W to get to the real target, but we
haven't had time to implement that. Basically you have a big method and
you are weaving stuff into it and just pushing the branches too far apart.
Do you need to weave so much into the method in question? Does any extra
exception info tell you the method in question? I can't recall.
cheers,
Andy
On 11 September 2013 01:36, Krishna Jasty <krishna.ja...@tcs.com> wrote:
Hi,
When i use the aspectj in our application, i am facing the following
exception.
Caused by: java.lang.IllegalStateException: Unable to pack method, jump
(with opcode=158) is too far: 32089
at
org.aspectj.apache.bcel.generic.InstructionBranch.updatePosition(InstructionBranch.java:176)
at
org.aspectj.apache.bcel.generic.BranchHandle.updatePosition(BranchHandle.java:101)
at
org.aspectj.apache.bcel.generic.InstructionList.setPositions(InstructionList.java:919)
at
org.aspectj.apache.bcel.generic.InstructionList.setPositions(InstructionList.java:863)
at
org.aspectj.apache.bcel.generic.InstructionList.getByteCode(InstructionList.java:981)
at
org.aspectj.apache.bcel.generic.MethodGen.getMethod(MethodGen.java:697)
... 68 more
When i check the aspectj source code, it looks as follows.
protected int updatePosition(int offset, int max_offset)
{
int i = getTargetOffset();
this.positionOfThisInstruction += offset;
if ((Math.abs(i) >= 32767 - max_offset) && (this.opcode != 201) &&
(this.opcode != 200))
{
if ((this.opcode == 168) || (this.opcode == 167)) {
if (this.opcode == 168)
this.opcode = 201;
else {
this.opcode = 200;
}
return 2;
}
throw new IllegalStateException("Unable to pack method, jump (with
opcode=" + this.opcode + ") is too far: " +
Math.abs(i));
}
return 0;
}
Hi Andy,
What exactly is happening here, can you share more details on how to avoid
this.
Thanks,
Krishna
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