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comparison src/share/vm/memory/allocation.hpp @ 9088:89e4d67fdd2a

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Merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 12 Apr 2013 14:05:42 +0200
parents b8f261ba79c6 83f27710f5f7
children 43223d3f5dcd
comparison
equal deleted inserted replaced
9037:b008f40b67d0 9088:89e4d67fdd2a
609 public: 609 public:
610 ReallocMark() PRODUCT_RETURN; 610 ReallocMark() PRODUCT_RETURN;
611 void check() PRODUCT_RETURN; 611 void check() PRODUCT_RETURN;
612 }; 612 };
613 613
614 // Helper class to allocate arrays that may become large.
615 // Uses the OS malloc for allocations smaller than ArrayAllocatorMallocLimit
616 // and uses mapped memory for larger allocations.
617 // Most OS mallocs do something similar but Solaris malloc does not revert
618 // to mapped memory for large allocations. By default ArrayAllocatorMallocLimit
619 // is set so that we always use malloc except for Solaris where we set the
620 // limit to get mapped memory.
621 template <class E, MEMFLAGS F>
622 class ArrayAllocator : StackObj {
623 char* _addr;
624 bool _use_malloc;
625 size_t _size;
626 public:
627 ArrayAllocator() : _addr(NULL), _use_malloc(false), _size(0) { }
628 ~ArrayAllocator() { free(); }
629 E* allocate(size_t length);
630 void free();
631 };
632
614 #endif // SHARE_VM_MEMORY_ALLOCATION_HPP 633 #endif // SHARE_VM_MEMORY_ALLOCATION_HPP