diff options
Diffstat (limited to 'libgo/go/runtime/mpagealloc.go')
| -rw-r--r-- | libgo/go/runtime/mpagealloc.go | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libgo/go/runtime/mpagealloc.go b/libgo/go/runtime/mpagealloc.go index 572e6a9..bb751f1 100644 --- a/libgo/go/runtime/mpagealloc.go +++ b/libgo/go/runtime/mpagealloc.go @@ -225,7 +225,9 @@ type pageAlloc struct { // the bitmaps align better on zero-values. chunks [1 << pallocChunksL1Bits]*[1 << pallocChunksL2Bits]pallocData - // The address to start an allocation search with. + // The address to start an allocation search with. It must never + // point to any memory that is not contained in inUse, i.e. + // inUse.contains(searchAddr) must always be true. // // When added with arenaBaseOffset, we guarantee that // all valid heap addresses (when also added with @@ -237,9 +239,15 @@ type pageAlloc struct { // space on architectures with segmented address spaces. searchAddr uintptr - // The address to start a scavenge candidate search with. + // The address to start a scavenge candidate search with. It + // need not point to memory contained in inUse. scavAddr uintptr + // The amount of memory scavenged since the last scavtrace print. + // + // Read and updated atomically. + scavReleased uintptr + // start and end represent the chunk indices // which pageAlloc knows about. It assumes // chunks in the range [start, end) are |