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8065334: CodeHeap expansion fails although there is uncommitted memory

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CodeHeap::expand_by() should commit remaining space if requested expansion size is too large.

Reviewed-by: kvn
This commit is contained in:
Tobias Hartmann 2016-01-22 12:37:32 +01:00
parent 025890379a
commit a5d7b2b450
1 changed files with 4 additions and 0 deletions
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4
hotspot/src/share/vm/memory/heap.cpp
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@ -149,6 +149,10 @@ bool CodeHeap::expand_by(size_t size) {
// expand _memory space
size_t dm = align_to_page_size(_memory.committed_size() + size) - _memory.committed_size();
if (dm > 0) {
// Use at least the available uncommitted space if 'size' is larger
if (_memory.uncommitted_size() != 0 && dm > _memory.uncommitted_size()) {
dm = _memory.uncommitted_size();
}
char* base = _memory.low() + _memory.committed_size();
if (!_memory.expand_by(dm)) return false;
on_code_mapping(base, dm);