[Bug 281] web100 applet fails to display buttons

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=281





------- Comment #4 from vijay at online.nl  2009-01-12 10:37 -------
When loading the applet in http://ndt.switch.ch/

- A 'strace' on the java process
(/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/../../bin/java
sun.applet.PluginMain) reveals that's it's sitting in a futex:

futex(0x5089e0, FUTEX_WAIT, 3550, NULL

The java process itself has pid 3549. It's parent pid is firefox.

If I run a strace on (p|t)id 3550, I get:

Process 3550 attached - interrupt to quit
futex(0x1743054, FUTEX_WAIT_PRIVATE, 1, NULL

If I run a 'strace -f' on pid 3549, it seems that the subthreads are active:
$ strace -f -p 3549
Process 3735 attached with 22 threads - interrupt to quit
[pid  3580] futex(0x7f4e741d227c, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
[pid  3735] futex(0x7f4e73f5f154, FUTEX_WAIT_PRIVATE, 17, NULL <unfinished ...>
[pid  3574] futex(0x7f4e73d0d954, FUTEX_WAIT_PRIVATE, 39, NULL <unfinished ...>
[pid  3572] futex(0x1742054, FUTEX_WAIT_PRIVATE, 97, NULL <unfinished ...>
[pid  3571] read(4,  <unfinished ...>
[pid  3569] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3568] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3567] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3562] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3561] futex(0x7f4e74090254, FUTEX_WAIT_PRIVATE, 3, NULL <unfinished ...>
[pid  3560] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3559] futex(0x7f4e74003654, FUTEX_WAIT_PRIVATE, 3, NULL <unfinished ...>
[pid  3558] futex(0x7f4e7e08ef54, FUTEX_WAIT_PRIVATE, 105, NULL <unfinished
...>
[pid  3556] futex(0x1053d20, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  3555] futex(0x7f4e7e069354, FUTEX_WAIT_PRIVATE, 5, NULL <unfinished ...>
[pid  3554] futex(0x7f4e7e061e54, FUTEX_WAIT_PRIVATE, 5, NULL <unfinished ...>
[pid  3553] restart_syscall(<... resuming interrupted call ...> <unfinished
...>
[pid  3552] futex(0x174f554, FUTEX_WAIT_PRIVATE, 7, NULL <unfinished ...>
[pid  3551] futex(0x174d854, FUTEX_WAIT_PRIVATE, 7, NULL <unfinished ...>
[pid  3550] futex(0x1743054, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
[pid  3549] futex(0x5089e0, FUTEX_WAIT, 3550, NULL <unfinished ...>
[pid  3557] futex(0x7f4e7e08b154, FUTEX_WAIT_PRIVATE, 41, NULL <unfinished ...>
[pid  3560] <... restart_syscall resumed> ) = -1 ETIMEDOUT (Connection timed
out
)
[pid  3560] futex(0x7f4e74005f28, FUTEX_WAKE_PRIVATE, 1) = 0
...

The subthreads exhibit activity while pids 3549 and 3550 remain in the futex,
i.e. no activity. 

Is this the expected behaviour? 


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