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Backed out changeset a1feed3cd303 (bug 941804) for b2g bustage on a CLOSED TREE

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This commit is contained in:
Carsten "Tomcat" Book 2014-07-14 12:34:33 +02:00
parent c0386c1181
commit 0bc9a2f7f0
2 changed files with 0 additions and 18 deletions
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13
js/public/HeapAPI.h
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@ -13,10 +13,6 @@
#include "js/Utility.h"
#ifdef MOZ_B2G
#define JS_GC_CHUNK_SIZE_SMALL
#endif
/* These values are private to the JS engine. */
namespace js {
@ -36,11 +32,7 @@ const size_t ArenaShift = 12;
const size_t ArenaSize = size_t(1) << ArenaShift;
const size_t ArenaMask = ArenaSize - 1;
#ifdef JS_GC_CHUNK_SIZE_SMALL
const size_t ChunkShift = 18;
#else
const size_t ChunkShift = 20;
#endif
const size_t ChunkSize = size_t(1) << ChunkShift;
const size_t ChunkMask = ChunkSize - 1;
@ -49,13 +41,8 @@ const size_t CellSize = size_t(1) << CellShift;
const size_t CellMask = CellSize - 1;
/* These are magic constants derived from actual offsets in gc/Heap.h. */
#ifdef JS_GC_CHUNK_SIZE_SMALL
const size_t ChunkMarkBitmapOffset = 258104;
const size_t ChunkMarkBitmapBits = 31744;
#else
const size_t ChunkMarkBitmapOffset = 1032352;
const size_t ChunkMarkBitmapBits = 129024;
#endif
const size_t ChunkRuntimeOffset = ChunkSize - sizeof(void*);
const size_t ChunkLocationOffset = ChunkSize - 2 * sizeof(void*) - sizeof(uint64_t);

5
js/src/gc/Heap.h
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@ -700,12 +700,7 @@ const size_t BytesPerArenaWithHeader = ArenaSize + ArenaBitmapBytes;
const size_t ChunkDecommitBitmapBytes = ChunkSize / ArenaSize / JS_BITS_PER_BYTE;
const size_t ChunkBytesAvailable = ChunkSize - sizeof(ChunkInfo) - ChunkDecommitBitmapBytes;
const size_t ArenasPerChunk = ChunkBytesAvailable / BytesPerArenaWithHeader;
#ifdef JS_GC_CHUNK_SIZE_SMALL
static_assert(ArenasPerChunk == 62, "Do not accidentally change our heap's density.");
#else
static_assert(ArenasPerChunk == 252, "Do not accidentally change our heap's density.");
#endif
/* A chunk bitmap contains enough mark bits for all the cells in a chunk. */
struct ChunkBitmap