diff options
Diffstat (limited to 'pkg/sentry/pgalloc/evictable_range.go')
-rw-r--r-- | pkg/sentry/pgalloc/evictable_range.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/pkg/sentry/pgalloc/evictable_range.go b/pkg/sentry/pgalloc/evictable_range.go index 10ce2ff44..79f513ac2 100644 --- a/pkg/sentry/pgalloc/evictable_range.go +++ b/pkg/sentry/pgalloc/evictable_range.go @@ -13,27 +13,37 @@ type EvictableRange struct { // WellFormed returns true if r.Start <= r.End. All other methods on a Range // require that the Range is well-formed. +// +//go:nosplit func (r EvictableRange) WellFormed() bool { return r.Start <= r.End } // Length returns the length of the range. +// +//go:nosplit func (r EvictableRange) Length() uint64 { return r.End - r.Start } // Contains returns true if r contains x. +// +//go:nosplit func (r EvictableRange) Contains(x uint64) bool { return r.Start <= x && x < r.End } // Overlaps returns true if r and r2 overlap. +// +//go:nosplit func (r EvictableRange) Overlaps(r2 EvictableRange) bool { return r.Start < r2.End && r2.Start < r.End } // IsSupersetOf returns true if r is a superset of r2; that is, the range r2 is // contained within r. +// +//go:nosplit func (r EvictableRange) IsSupersetOf(r2 EvictableRange) bool { return r.Start <= r2.Start && r.End >= r2.End } @@ -41,6 +51,8 @@ func (r EvictableRange) IsSupersetOf(r2 EvictableRange) bool { // Intersect returns a range consisting of the intersection between r and r2. // If r and r2 do not overlap, Intersect returns a range with unspecified // bounds, but for which Length() == 0. +// +//go:nosplit func (r EvictableRange) Intersect(r2 EvictableRange) EvictableRange { if r.Start < r2.Start { r.Start = r2.Start @@ -57,6 +69,8 @@ func (r EvictableRange) Intersect(r2 EvictableRange) EvictableRange { // CanSplitAt returns true if it is legal to split a segment spanning the range // r at x; that is, splitting at x would produce two ranges, both of which have // non-zero length. +// +//go:nosplit func (r EvictableRange) CanSplitAt(x uint64) bool { return r.Contains(x) && r.Start < x } |