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comparison src/share/vm/gc_implementation/g1/heapRegionSeq.cpp @ 1688:2dfd013a7465

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6975078: assert(allocated_on_res_area() || allocated_on_C_heap() || allocated_on_arena() Summary: Pass the check in ResourceObj() if _allocation value is already set and object is allocated on stack. Reviewed-by: dholmes, johnc
author kvn
date Mon, 09 Aug 2010 15:17:05 -0700
parents c18cbe5936b8
children 72a161e62cc4
comparison
equal deleted inserted replaced
1687:fb8abd207dbe 1688:2dfd013a7465
40 HeapRegionSeq::HeapRegionSeq(const size_t max_size) : 40 HeapRegionSeq::HeapRegionSeq(const size_t max_size) :
41 _alloc_search_start(0), 41 _alloc_search_start(0),
42 // The line below is the worst bit of C++ hackery I've ever written 42 // The line below is the worst bit of C++ hackery I've ever written
43 // (Detlefs, 11/23). You should think of it as equivalent to 43 // (Detlefs, 11/23). You should think of it as equivalent to
44 // "_regions(100, true)": initialize the growable array and inform it 44 // "_regions(100, true)": initialize the growable array and inform it
45 // that it should allocate its elem array(s) on the C heap. The first 45 // that it should allocate its elem array(s) on the C heap.
46 // argument, however, is actually a comma expression (new-expr, 100). 46 //
47 // The purpose of the new_expr is to inform the growable array that it 47 // The first argument, however, is actually a comma expression
48 // is *already* allocated on the C heap: it uses the placement syntax to 48 // (set_allocation_type(this, C_HEAP), 100). The purpose of the
49 // keep it from actually doing any allocation. 49 // set_allocation_type() call is to replace the default allocation
50 _regions((ResourceObj::operator new (sizeof(GrowableArray<HeapRegion*>), 50 // type for embedded objects STACK_OR_EMBEDDED with C_HEAP. It will
51 (void*)&_regions, 51 // allow to pass the assert in GenericGrowableArray() which checks
52 ResourceObj::C_HEAP), 52 // that a growable array object must be on C heap if elements are.
53 //
54 // Note: containing object is allocated on C heap since it is CHeapObj.
55 //
56 _regions((ResourceObj::set_allocation_type((address)&_regions,
57 ResourceObj::C_HEAP),
53 (int)max_size), 58 (int)max_size),
54 true), 59 true),
55 _next_rr_candidate(0), 60 _next_rr_candidate(0),
56 _seq_bottom(NULL) 61 _seq_bottom(NULL)
57 {} 62 {}