tree 3597d49dcc076c8ff51999e4efc0c2348d42c357
parent 3829bc3c35750fed49b8700d84c7f6c0ec9e96af
author Jeff Brown <jeffbrown@google.com> 1318283410 -0700
committer Jeff Brown <jeffbrown@google.com> 1318356199 -0700

Use ashmem for CursorWindows.
Bug: 5332296

The memory dealer introduces additional delays for reclaiming
the memory owned by CursorWindows because the Binder object must
be finalized.  Using ashmem instead gives CursorWindow more
direct control over the lifetime of the shared memory region.

The provider now allocates the CursorWindows and returns them
to clients with a read-only protection bit set on the ashmem
region.

Improved the encapsulation of CursorWindow.  Callers shouldn't
need to care about details like how string fields are allocated.

Removed the compile-time configuration of string and numeric
storage modes to remove some dead weight.

Change-Id: I07c2bc2a9c573d7e435dcaecd269d25ea9807acd