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Factored out code to initiate a lock operation and to wait for its completion.
This will facilitate future changes, where the lock request can come from
several different parts of the code.

Reviewer: buntinas

MPI_.

A slightly older version of this patch was reviewed by goodell.

Release the request instead of manually setting refs.

Reviewer: buntinas

This fixes FOP segv failures when configured with --enable-g=mem, and partially
addresses ticket #1697.

Removed dead code from passive target RMA processing.

Reviewer: none

True_lb is always zero for predefined types; there's no need to include this in
address calculations when processing predefined types.

Reviewer: goodell

Reviewer: goodell

By setting "indent-tabs-mode:nil" we should hopefully begin to slowly
squeeze out hard tabs from the source without a disruptive (to
downstream projects) whitespace-fixing change.

No reviewer.

Updated the fetch_and_op implementation to have two data transfer paths; one
where data can be embedded in the packet header and one where it is sent
separately.  With this change, the header size is back to 40 bytes.

Reviewer: buntinas

Added builtin op implementations for RMA-only ops.  MPI_REPLACE was not defined
in the op_table prior to this commit.  Also includes an alternate
implementation of the linked list test that uses fetch-and-op with these
operations to enable the use of shared locks.

Reviewer: goodell

Adds implementation of atomic fetch-and-op operation and several test cases.

Reviewer: buntinas

Reviewer: buntinas

Reviewer: buntinas

The source_win_handle is used to inform the target that the RMA access epoch
has ended.  This was removed from the CAS packet to save space and was replaced
with another packet type, MPIDI_CH3_PKT_CAS_UNLOCK, which conveys the same
information.

Reviewer: buntinas

This patch adds support for the new MPI-3 compare-and-swap routine.  The
implementation embeds the data into the packet header to reduce the number of
messages.

Reviewer: buntinas

Pulled bit manipulation arithmetic into macros for converting handles to
indices in MPIR_Op and MPIR_Op_check_dtype function pointer tables.

Reviewer: buntinas

Removed the old RMA virtual function infrastructure from CH3 -- this code was
all already dead.  Function overrides are already provided per-window in the
MPID_Win structure.  Overrides for non-window-specific (window creation)
operations will be added shortly.

Reviewer: buntinas

yet implemented below the ADI level.

[svn-r9963] Added code to complete RMA operations when large numbers of pending requests are created; allows codes such as Graph500 benchmark to complete

No reviewer.

No reviewer.

No reviewer.

[svn-r8069] Detect and report incorrect use of assert and/or rank in Win_lock and Win_unlock.  These detect an error in the current test suite that manifested itself as a storage leak.  Also corrected some man page information and instrumentation for RMA completion in non-fence modes

[svn-r7425] Fixed error in computing previous pointer location in RMA list and adding missing checks on error returns

[svn-r7416] Major improvement to RMA performance for long lists of operations, an immediate mode accumulate for single ints, store the MPID_Comm within the window, and added a basic performance instrumentation interface that was extensively used to improve the RMA performance (enabled with --enable-g=instr).  With these fixes, MPICH2 can run the one-sided version of the Graph500 benchmark at a respectable if not great rate

[svn-r7312] Correct use of MPI_ERR_NO_MEM (should be MPI_ERR_OTHER) for out-of-memory that does not pertain to MPI_Alloc_mem and add detail to error messages about out-of-memory

[svn-r7186] Fixes to allow job to continue with a node failure.  VCs associated with the failed process enter a failed state, and cannot be used for communication, but communication is still allowed with other processes.  Reviewed by goodell@.

Reviewed by buntinas.

No reviewer.

[svn-r7029] replaced NMPI_ functions with MPIR_ _impl for pack, unpack, pack_size, and group_translate_ranks.  reviewed by balaji@

[svn-r7012] replaced NMPI_[i]Send, [i]Recv, Wait[all] and Test with MPIR__impl, or directly called MPID_ functions.  Reviewed by jayesh@

When compiled for fine-grained threading, the completion counter serves
as a form of lockfree signalling.  As such, atomic access and memory
barriers must be used to ensure correctness.

In per-object mode, this code also contains valgrind client request annotations
to inform Helgrind/DRD/TSan about the lockfree signalling pattern.

No reviewer.

[svn-r6799] Replaced NMPI_Reduce_scatter_blocked with MPIR_Reduce_scatter_blocked_impl.  Reviewed by goodell@