tree c90399f680cdd60be823692f9431ebd816f5d336
parent 2f99a1c5b70852533a1c7406c1965d753efc810c
author Mathieu Chartier <mathieuc@google.com> 1447718755 -0800
committer Mathieu Chartier <mathieuc@google.com> 1447895030 -0800

Add immune spaces abstraction

ImmuneSpaces is a set of spaces which are not reclaimable by the GC in
the current collection. This set of spaces does not have requirements
about space adjacency like the old ImmuneRegion. ImmuneSpaces generates
the largest immune region for the GC. Since there is no requirement on
adjacency, it is possible to have multiple non-adjacent applicaton
image files.

For image spaces, we also look at the oat code which is normally after
the application image. In this case, we add the code as part of the
immune region. This is required to have both the boot image and the
zygote space be in the same immune region (for performance reasons).

Bug: 22858531

Change-Id: I5103b31c0e39ad63c594f5557fc848a3b288b43e