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src/runtime: improve metadatasize calculation to avoid rounding issues

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This commit is contained in:
Damian Gryski
2022-01-26 11:00:50 -08:00
committed by Ron Evans
parent 3458726234
commit 23479c92d3
1 changed files with 1 additions and 1 deletions
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src/runtime/gc_conservative.go
+1 -1
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@@ -240,7 +240,7 @@ func calculateHeapAddresses() {
totalSize := heapEnd - heapStart totalSize := heapEnd - heapStart
// Allocate some memory to keep 2 bits of information about every block. // Allocate some memory to keep 2 bits of information about every block.
metadataSize := totalSize / (blocksPerStateByte * bytesPerBlock) metadataSize := (totalSize + blocksPerStateByte*bytesPerBlock) / (1 + blocksPerStateByte*bytesPerBlock)
metadataStart = unsafe.Pointer(heapEnd - metadataSize) metadataStart = unsafe.Pointer(heapEnd - metadataSize)
// Use the rest of the available memory as heap. // Use the rest of the available memory as heap.