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Merge "Tune LA's initial size better"

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This commit is contained in:
John Reck
2015-07-30 21:29:03 +00:00
committed by Android (Google) Code Review
parent b4dae4d48e afb052142a
commit 49286e8540
1 changed files with 4 additions and 3 deletions
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7
libs/hwui/utils/LinearAllocator.cpp
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@ -32,7 +32,7 @@
// The ideal size of a page allocation (these need to be multiples of 8)
#define INITIAL_PAGE_SIZE ((size_t)4096) // 4kb
#define INITIAL_PAGE_SIZE ((size_t)512) // 512b
#define MAX_PAGE_SIZE ((size_t)131072) // 128kb
// The maximum amount of wasted space we can have per page
@ -40,7 +40,7 @@
// If this is too low, we will malloc too much
// Too high, and we may waste too much space
// Must be smaller than INITIAL_PAGE_SIZE
#define MAX_WASTE_SIZE ((size_t)1024)
#define MAX_WASTE_RATIO (0.5f)
#if ALIGN_DOUBLE
#define ALIGN_SZ (sizeof(double))
@ -114,7 +114,7 @@ private:
LinearAllocator::LinearAllocator()
: mPageSize(INITIAL_PAGE_SIZE)
, mMaxAllocSize(MAX_WASTE_SIZE)
, mMaxAllocSize(INITIAL_PAGE_SIZE * MAX_WASTE_RATIO)
, mNext(0)
, mCurrentPage(0)
, mPages(0)
@ -156,6 +156,7 @@ void LinearAllocator::ensureNext(size_t size) {
if (mCurrentPage && mPageSize < MAX_PAGE_SIZE) {
mPageSize = min(MAX_PAGE_SIZE, mPageSize * 2);
mMaxAllocSize = mPageSize * MAX_WASTE_RATIO;
mPageSize = ALIGN(mPageSize);
}
mWastedSpace += mPageSize;