* Genode: balance thread CPU affinities
Genode threads are pinned by defaut to the same CPU as the initial
component entrypoint thread. Thread affinities are also permanent. This
patch pins new threads to CPUs in a round-robin manner. Arbitrary CPU
pinning is not exposed and the 'nimPinToCpu' has no effect.
* Genode: guarantee that 'quit' will not return
On Genode exits are handled by whatever component is acting as parent.
The caller has no guarentee that the parent implementation will halt the
caller's threads, so explicitly deadlock the 'quit' procedure.
* Fix kqueue.nim and ansi_c.nim to support dragonfly.
* Fix ioselectors.nim, threads.nim to support dragonfly.
* Fix deprecated dealloc call in tioselectors.nim.
* Fix tfsmonitor.nim test to run only on Linux.
* Fix osproc.nim return wrong exit codes.
* Fix getAppFilename() for dragonfly.
* Fix proper exit code handling.
In order to be able to scan thread stacks, the Boehm GC needs to know
about newly created threads. We establish the end of the stack by using
GC_call_with_stack_base (this works properly also with the dual-stack
Itanium architecture) and then GC_register_my_thread() to register a
thrad and GC_unregister_my_thread() to unregister it again.
This patch also includes a modification for the refc and markandsweep
collectors to set the stack bottom for thread stacks correctly even if
an optimizer aggressively inlines and optimizes procedures (this is
already being done for the stack of the main thread).
Finally, we use the {.noconv.} pragma for the Boehm GC, as the Boehm
API uses no specific calling convention.
Motivation
----------
globalsSlot is always defined so threading code works incorrectly when
native TLS supported.
Modification
------------
Defined globalsSlot only in TLS emulation mode. Remove myThreadId, which
based on broken behavior. It might be reimplemented later
Result
------
No segfaults.
The pthread_mutex_timedlock() function is not supported on a number
of architectures and is not actually used by the library or compiler,
but prevents C++ compilation on systems that do not support it when
threads are enabled.
