Active threads end up in the FEB wait queue

[brycelelbach]

[reported by blelbach] [Trac time Mon Oct 24 00:17:08 2011] ```
[00:13:03]:wash@vega:/home/wash/hpx/gcc-4.6.1-release$ bin/fibonacci -t40 -Ihpx.logging.level=2 -Ihpx.logging.destination=cout
(T00000001/0000000001255018.02/00007fff96b3fbd8) P00000001/000000000225d020.03 00:13.04.362 [0000000000000001] [ERR] created exception: thread(0x225d020) is active: HPX(lock_error)
(T00000001/0000000001255018.02/00007fff96b3fbd8) P00000001/000000000225d020.03 00:13.04.363 [0000000000000002] [ERR] rethrow_exception: throwing exception:
[stack_trace]: 10 frames:
0x7f76d3b67e85 : ??? + 0xd3b67e85 in /shared/home/wash/hpx/gcc-4.6.1-release/lib/hpx/libhpx.so.0
0x7f76d3b62b09 : hpx::detail::backtrace() + 0x9 in /shared/home/wash/hpx/gcc-4.6.1-release/lib/hpx/libhpx.so.0
0x7f76d3b73c61 : void hpx::detail::throw_exceptionhpx::exception(hpx::exception const&, std::string const&, std::string const&, int) + 0x41 in /shared/home/wash/hpx/gcc-4.6.1-release/lib/hpx/libhpx.so.0
0x444955 : ??? + 0x444955 in bin/fibonacci
0x444c9f : ??? + 0x444c9f in bin/fibonacci
0x441dbf : ??? + 0x441dbf in bin/fibonacci
0x44210f : ??? + 0x44210f in bin/fibonacci
0x422c2c : ??? + 0x422c2c in bin/fibonacci
0x7f76d3bf06c6 : ??? + 0xd3bf06c6 in /shared/home/wash/hpx/gcc-4.6.1-release/lib/hpx/libhpx.so.0
0x7f76d3bf0a89 : ??? + 0xd3bf0a89 in /shared/home/wash/hpx/gcc-4.6.1-release/lib/hpx/libhpx.so.0
[what]: thread(0x225d020) is active: HPX(lock_error)

[version]: V0.7.0-trunk (AGAS: V2.1), SVN: 6059:6063M

[date]: Oct 24 2011 00:02:17

[compiler]: GNU C++ version 4.6.1
[stdlib]: GNU libstdc++ version 20110714

(T00000001/----------------.--/----------------) P--------/----------------.-- 00:13.04.479 [0000000000000003] [TM] Listing suspended threads while queue (0) is empty:
(T00000001/----------------.--/----------------) P--------/----------------.-- 00:13.04.479 [0 000000000000004] [TM] queue(0): suspended(0x16d5000.01/7fff96b3fbd8) P0x1355000: fibonacci_action: enqueue_full_full

[brycelelbach]

[comment by blelbach] [Trac time Thu Oct 27 18:17:51 2011] r6128