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microoptimizations

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This commit is contained in:
lax1dude 2024-11-01 18:05:29 -07:00
parent cd8066757b
commit eb2cab3597
1 changed files with 7 additions and 4 deletions
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11
core/src/main/java/org/teavm/runtime/LaxMalloc.java
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@ -126,7 +126,7 @@ public final class LaxMalloc {
Address bucketStartAddr = Address.fromInt(ADDR_HEAP_BUCKETS_START).add(availableBucket << SIZEOF_PTR_SH);
Address chunkPtr = bucketStartAddr.getAddress();
int chunkSize = readChunkSize(chunkPtr);
int chunkSize = readChunkSizeStatus(chunkPtr);
Address itrChunkStart = Address.fromInt(0);
// check if the first chunk in the bucket is large enough
@ -150,7 +150,7 @@ public final class LaxMalloc {
int availableLargerBucket = numberOfTrailingZerosL(bucketMask);
Address largerBucketStartAddr = Address.fromInt(ADDR_HEAP_BUCKETS_START).add(availableLargerBucket << SIZEOF_PTR_SH);
Address largerChunkPtr = largerBucketStartAddr.getAddress();
int largerChunkSize = readChunkSize(largerChunkPtr);
int largerChunkSize = readChunkSizeStatus(largerChunkPtr);
// this will remove the chunk from the free list
allocateMemoryFromChunk(largerChunkPtr, largerChunkSize, sizeBytes);
@ -190,7 +190,7 @@ public final class LaxMalloc {
// iterate the (only) bucket of possibly large enough chunks
Address addrIterator = itrChunkStart;
do {
chunkSize = readChunkSize(addrIterator);
chunkSize = readChunkSizeStatus(addrIterator);
// check if the chunk is large enough
if(chunkSize - 8 >= sizeBytes) { // size - 2 ints
@ -242,7 +242,7 @@ public final class LaxMalloc {
// iterate all free huge chunks
Address addrIterator = chunkPtr;
do {
int chunkSize = readChunkSize(addrIterator);
int chunkSize = readChunkSizeStatus(addrIterator);
if(chunkSize - 8 >= sizeBytes) { // size - 2 ints
// we've found a large enough chunk
@ -501,6 +501,9 @@ public final class LaxMalloc {
@Import(name = "teavm_growHeap")
private static native boolean growHeapOuter(int bytes);
/**
* Note that on a free chunk, this is the size, because the status bit is 0
*/
private static int readChunkSizeStatus(Address chunkAddr) {
return chunkAddr.getInt();
}