On Fri, 8 Dec 2023 22:29:12 GMT, Alex Menkov wrote:
> Original fix for JDK-8299426 (Heap dump does not contain virtual Thread stack
> references, #16665) caused failures of new test (added while #16665 was under
> review):
> test/hotspot/jtreg/compiler/c2/TestReduceAllocationAndHeapDump.java
On Wed, 13 Dec 2023 04:59:16 GMT, Alex Menkov wrote:
>>> So is the main thread operating in_native whilst doing the merge? I suspect
>>> the admonition of not doing the merge at a safepoint actually meant "not a
>>> safepoint by the VMThread" as that would cause the whole VM to pause. Even
On Wed, 13 Dec 2023 01:38:03 GMT, Alex Menkov wrote:
>>> I.e. merge is performed on main java thread, but VM is at safepoint
>>
>> So is the main thread operating in_native whilst doing the merge? I suspect
>> the admonition of not doing the merge at a safepoint actually meant "not a
>>
On Tue, 12 Dec 2023 23:11:41 GMT, David Holmes wrote:
> So is the main thread operating in_native whilst doing the merge? I suspect
> the admonition of not doing the merge at a safepoint actually meant "not a
> safepoint by the VMThread" as that would cause the whole VM to pause. Even
> doing
On Fri, 8 Dec 2023 11:54:40 GMT, Serguei Spitsyn wrote:
>> This fix is for JDK 23 but the intention is to back port it to 22 in RDP-1
>> time frame.
>> It is fixing a deadlock issue between `VirtualThread` class critical
>> sections with the `interruptLock` (in methods: `unpark()`,
On Tue, 12 Dec 2023 22:18:33 GMT, Alex Menkov wrote:
> I.e. merge is performed on main java thread, but VM is at safepoint
So is the main thread operating in_native whilst doing the merge? I suspect the
admonition of not doing the merge at a safepoint actually meant "not a
safepoint by the
On Mon, 11 Dec 2023 14:06:43 GMT, Stefan Karlsson wrote:
>> [JDK-8315097](https://bugs.openjdk.org/browse/JDK-8315097): 'Rename
>> createJavaProcessBuilder' changed the name of the ProcessTools helper
>> functions used to create `ProcessBuilder`s used to spawn new java test
>> processes.
>>
On Tue, 12 Dec 2023 21:59:12 GMT, Alex Menkov wrote:
>> Prior to the virtual thread changes what thread is performing the merge?
>> After these changes what thread would do it if not included in the VM
>> operation?
>>
>> The assert is correct - we should not do the merge at the safepoint (or
On Tue, 12 Dec 2023 07:06:07 GMT, David Holmes wrote:
> Prior to the virtual thread changes what thread is performing the merge?
Prior the change merge is performed on either AttachListener thread (when it's
the current thread - special case for tools like jcmd) or on VMThread (if the
current
On Mon, 11 Dec 2023 22:41:56 GMT, Yi-Fan Tsai wrote:
>> `jcmd Compiler.perfmap` uses the hard-coded file name for a perf map:
>> `/tmp/perf-%d.map`. This change adds an optional argument for specifying a
>> file name.
>>
>> `jcmd PID help Compiler.perfmap` shows the following usage.
>>
>>
> On AIX, repeated calls to dlopen referring to the same shared library may
> result in different, unique dl handles to be returned from libc. In that it
> differs from typical libc implementations that cache dl handles.
>
> This causes problems in the JVM with code that assumes equality of
On Mon, 11 Dec 2023 12:50:38 GMT, Kevin Walls wrote:
> Tidyup change, looks like this field was not removed when IIOP was removed
> from RMIConnector.
>
> The field is not required for interoperability:
> with the field removed, I can still connect an older JMX client to a running
> app with
On Mon, 11 Dec 2023 12:50:38 GMT, Kevin Walls wrote:
> Tidyup change, looks like this field was not removed when IIOP was removed
> from RMIConnector.
>
> The field is not required for interoperability:
> with the field removed, I can still connect an older JMX client to a running
> app with
On Mon, 11 Dec 2023 11:33:08 GMT, Kevin Walls wrote:
> Trivial test update to run in "othervm". This test has failed due to
> interrupted threads: the interruption interferes with timing, but also the
> test is designed to fail if interrupted.
>
> Other tests in the same directory have the
On Mon, 11 Dec 2023 11:33:08 GMT, Kevin Walls wrote:
> Trivial test update to run in "othervm". This test has failed due to
> interrupted threads: the interruption interferes with timing, but also the
> test is designed to fail if interrupted.
>
> Other tests in the same directory have the
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