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src/hotspot/share/memory/heap.cpp

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rev 47398 : 8166317: InterpreterCodeSize should be computed
Reviewed-by: kvn, coleenp

*** 220,229 **** --- 220,243 ---- } else { return NULL; } } + void CodeHeap::deallocate_tail(void* p, size_t used_size) { + assert(p == find_start(p), "illegal deallocation"); + // Find start of HeapBlock + HeapBlock* b = (((HeapBlock *)p) - 1); + assert(b->allocated_space() == p, "sanity check"); + size_t used_number_of_segments = size_to_segments(used_size + header_size()); + size_t actual_number_of_segments = b->length(); + guarantee(used_number_of_segments <= actual_number_of_segments, "Must be!"); + guarantee(b == block_at(_next_segment - actual_number_of_segments), "Intermediate allocation!"); + size_t number_of_segments_to_deallocate = actual_number_of_segments - used_number_of_segments; + _next_segment -= number_of_segments_to_deallocate; + mark_segmap_as_free(_next_segment, _next_segment + number_of_segments_to_deallocate); + b->initialize(used_number_of_segments); + } void CodeHeap::deallocate(void* p) { assert(p == find_start(p), "illegal deallocation"); // Find start of HeapBlock HeapBlock* b = (((HeapBlock *)p) - 1);
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