tree 27ed39f92c013381d08c7ad51d311cb29be230dc
parent e21bf0099117b82963cdf7f95a1b8dabfcf29397
author Hans Boehm <hboehm@google.com> 1400719583 -0700
committer Hans Boehm <hboehm@google.com> 1402096422 -0700

Clean up and augment Atomic class.  Replace QuasiAtomic MemBars.

Add a number of missing C++11 operations to Atomic class.
Invoke the 64 bit routines in QuasiAtomic when necessary.
Replace QuasiAtomic membars with fences that correspond to C++11 fences.

QuasiAtomic was moved to the top of the file.  Only fence implementations
actually changed.

This replaces some buggy uses of MembarStoreStore, as reported
in b/14685856 .

Avoid some redundant fences for long volatile operations.

Incompletely converts low-level memory access operations to Atomic.

Change-Id: Iea828431a0cea46540eb74fcaa02071cab6fdcda