RFR (XS) 7182040 - make native thread creation failure message more descriptive

Ioi Lam ioi.lam at oracle.com
Wed Feb 12 13:03:25 PST 2014


It's not clear to me how to define a "generic" version of a method and 
override it in a port. In the "os" class, there aren't virtual methods. 
Also, the various os_<port>.hpp files are included into the middle of 
the declaration of the "os" class. So it seems to me one way or another 
you have to use #ifdef.

- Ioi

On 2/12/14, 12:06 PM, Christian Thalinger wrote:
> Can we not use a macro for the message?
> If you want to be able to override the message override the method.
> On Feb 10, 2014, at 2:00 PM, Ioi Lam <ioi.lam at oracle.com> wrote:
>> Please review a very small fix (JDK9):
>> http://cr.openjdk.java.net/~iklam/7182040/thread_create_failed_msg_001/
>> Bug: The original "OutOfMemorError" message could be misleading when the
>>      actual cause is the OS limit on number of processes/threads.
>>     https://bugs.openjdk.java.net/browse/JDK-7182040
>> Summary of fix:
>>     I changed all occurrence of the literal string "unable to create new native thread"
>>     in the C code to call a common function os::native_thread_creation_failed_msg().
>>     Individual OS ports may define an alternative message by defining the
>>     OS_NATIVE_THREAD_CREATION_FAILED_MSG macro in os_<port>.hpp
>>     Here's a snap shot of the new message:
>>     java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory
>>                                 or process/resource limits reached
>>         at java.lang.Thread.start0(Native Method)
>>         at java.lang.Thread.start(Thread.java:713)
>>         at spin.main(spin.java:15)
>> Tests:
>>     JPRT
>> Thanks
>> - Ioi

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