On Apr 21, 2021, at 11:40 AM, Alan Bateman wrote:
>
> Sure, if you are using native code then you have the full power of JVM TI and
> JNI available. Project Panama is exploring how to restrict access to native
> code, I think too early to say how this might extend to JNI.
I looked at some of
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On 20/04/2021 21:26, Rafael Winterhalter wrote:
I have earlier proposed to offer a "jdk.test" module that
offers the Instrumentation instance via a simple API similar to Byte
Buddy's. The JVM would not load this module unless requested on the command
line. Build tools like Maven's surefire or
Hi Ron,
we certainly do come from different backgrounds and therefore perspectives,
I find this exchange of perspective to be the main advantage of this open
mailing list.
I do believe that I have an understanding of your angle, I tried to give my
feedback since before Java 9 introduced the
I think you’re coming to this discussion with a very different perspective from
us, which
makes understanding what is or isn’t on the table unclear, and also steers the
ideas in
directions that are different from the one we’re going.
Our goal is not to maintain some status quo until such time
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On 19/04/2021 22:20, Rafael Winterhalter wrote:
:
At the moment, it is required for root to switch to the user that owns the
JVM process as the domain socket is only accessible to that user to avoid
that users without access to the JVM can inject themselves into a JVM. I am
not sure if
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On 19/04/2021 15:10, Peter Levart wrote:
:
I hear Rafael that dynamic attach is important to support monitoring and
instrumenting large numbers of JVMs with no preparations (i.e. without issueing
special command-line options to enable it). As I understand, current attach
mechanism is designed
On Mon, 19 Apr 2021 09:34:56 GMT, Alan Bateman wrote:
> an application or library can use the attach mechanism (directly or via the
> attach API in a child VM) to load an agent and leak the Instrumentation
> object. This is the genie that somehow needs to be put back in its bottle.
> One
On Mon, 19 Apr 2021 09:11:34 GMT, Peter Levart wrote:
> I think it would be easy to limit the use of this Instrumentation method to
> the agent code as agent classes are loaded by the bootstrap classloader.
> Simply make the method implementation caller-sensitive and check the caller
> is
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
On Fri, 16 Apr 2021 20:30:15 GMT, Rafael Winterhalter
wrote:
>> To allow agents the definition of auxiliary classes, an API is needed to
>> allow this. Currently, this is often achieved by using `sun.misc.Unsafe` or
>> `jdk.internal.misc.Unsafe` ever since the `defineClass` method was removed
15 matches
Mail list logo
