diff options
| author | Dmitriy Vyukov <dvyukov@google.com> | 2013-05-28 22:04:34 +0400 |
|---|---|---|
| committer | Dmitriy Vyukov <dvyukov@google.com> | 2013-05-28 22:04:34 +0400 |
| commit | 671814b9044bebd9f5801cf83df74acbdf31d732 (patch) | |
| tree | bab95311387449bea4dd43b067288ba839775719 /src/pkg/runtime/malloc.h | |
| parent | 081129e286fcda2c9525dd08bd90ff6883df0698 (diff) | |
| download | go-671814b9044bebd9f5801cf83df74acbdf31d732.tar.xz | |
runtime: allocate page table lazily
This removes the 256MB memory allocation at startup,
which conflicts with ulimit.
Also will allow to eliminate an unnecessary memory dereference in GC,
because the page table is usually mapped at known address.
Update #5049.
Update #5236.
R=golang-dev, khr, r, khr, rsc
CC=golang-dev
https://golang.org/cl/9791044
Diffstat (limited to 'src/pkg/runtime/malloc.h')
| -rw-r--r-- | src/pkg/runtime/malloc.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/pkg/runtime/malloc.h b/src/pkg/runtime/malloc.h index b4edf7cbef..2131a7e51c 100644 --- a/src/pkg/runtime/malloc.h +++ b/src/pkg/runtime/malloc.h @@ -411,7 +411,8 @@ struct MHeap uint32 nspancap; // span lookup - MSpan *map[1<<MHeapMap_Bits]; + MSpan** map; + uintptr spans_mapped; // range of addresses we might see in the heap byte *bitmap; @@ -442,6 +443,7 @@ MSpan* runtime·MHeap_LookupMaybe(MHeap *h, void *v); void runtime·MGetSizeClassInfo(int32 sizeclass, uintptr *size, int32 *npages, int32 *nobj); void* runtime·MHeap_SysAlloc(MHeap *h, uintptr n); void runtime·MHeap_MapBits(MHeap *h); +void runtime·MHeap_MapSpans(MHeap *h); void runtime·MHeap_Scavenger(void); void* runtime·mallocgc(uintptr size, uint32 flag, int32 dogc, int32 zeroed); |