tree 73909d3b34a2908e9de44cc60c4a2ff74eabefd7
parent f345404c725330914b8313d2c1af17226c5b92ca
author Vladimir Marko <vmarko@google.com> 1534432369 +0100
committer Vladimir Marko <vmarko@google.com> 1534855860 +0100

Remove unnecessary indirection from MemMap.

Avoid plain MemMap pointers being passed around by changing
the MemMap to moveable and return MemMap objects by value.
Previously we could have a valid zero-size MemMap but this
is now forbidden.

MemMap::RemapAtEnd() is changed to avoid the explicit call
to munmap(); mmap() with MAP_FIXED automatically removes
old mappings for overlapping regions.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: Pixel 2 XL boots.
Test: m test-art-target-gtest
Test: testrunner.py --target --optimizing
Change-Id: I12bd453c26a396edc20eb141bfd4dad20923f170