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7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache

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Use largest_free_block() instead of unallocated_capacity().

Reviewed-by: iveresov, never, ysr
This commit is contained in:
Vladimir Kozlov 2011-03-09 09:15:16 -08:00
parent 84ef74286f
commit fd6487f201
7 changed files with 28 additions and 15 deletions
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9
hotspot/src/share/vm/memory/heap.cpp
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@ -316,12 +316,19 @@ size_t CodeHeap::allocated_capacity() const {
}
size_t CodeHeap::largest_free_block() const {
// First check unused space excluding free blocks.
size_t free_sz = size(_free_segments);
size_t unused = max_capacity() - allocated_capacity() - free_sz;
if (unused >= free_sz)
return unused;
// Now check largest free block.
size_t len = 0;
for (FreeBlock* b = _freelist; b != NULL; b = b->link()) {
if (b->length() > len)
len = b->length();
}
return size(len);
return MAX2(unused, size(len));
}
// Free list management