pjlib-test failed on select() test Windows Vista multi-core

[bennylp]

Error log:

pjlib-test error:
 19:24:28.914 Running select_test()...
 19:24:28.916 ...Testing simple UDP select()
 19:24:28.917 ..ERROR(-70)

The select() returns immediately with *only* write-fdset is set (while the test also expects that read-fdset is set). So perhaps it is just that the system hasn't got time/context to deliver the packet, since select(), with write-fdset included, is called directly after sendto().

Experiments:

• inserting pj_thread_sleep(1) between sendto() & select(): OK
• inserting pj_thread_sleep(0) between sendto() & select(): failed
• inserting PJ_LOG() between sendto() & select(): OK

The corresponding ticket for 1.0.x is #908

[bennylp]

I can reproduce this with Visual Studio 6 | Debug on Windows Vista 32-bit dual core. Changing the title.

[bennylp]

As additional info, the error only happens about 50% of the time.

[bennylp]

In r2778:

• Added pj_thread_sleep(10) before calling sleep(). Tried with other ways too but this seems to be appropriate for the test, as in the real application this shouldn't matter.