Mercurial > hg > truffle
annotate src/share/vm/memory/permGen.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | e41cd7fd68a6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // All heaps contains a "permanent generation," containing permanent | |
| 26 // (reflective) objects. This is like a regular generation in some ways, | |
| 27 // but unlike one in others, and so is split apart. | |
| 28 | |
| 29 class Generation; | |
| 30 class GenRemSet; | |
| 31 class CSpaceCounters; | |
| 32 | |
| 33 // PermGen models the part of the heap | |
| 34 | |
| 35 class PermGen : public CHeapObj { | |
| 36 friend class VMStructs; | |
| 37 protected: | |
| 38 size_t _capacity_expansion_limit; // maximum expansion allowed without a | |
| 605 | 39 // full gc occurring |
| 0 | 40 |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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41 HeapWord* mem_allocate_in_gen(size_t size, Generation* gen); |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
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42 |
| 0 | 43 public: |
| 44 enum Name { | |
| 45 MarkSweepCompact, MarkSweep, ConcurrentMarkSweep | |
| 46 }; | |
| 47 | |
| 48 // Permanent allocation (initialized) | |
| 49 virtual HeapWord* mem_allocate(size_t size) = 0; | |
| 50 | |
| 51 // Mark sweep support | |
| 52 virtual void compute_new_size() = 0; | |
| 53 | |
| 54 // Ideally, we would use MI (IMHO) but we'll do delegation instead. | |
| 55 virtual Generation* as_gen() const = 0; | |
| 56 | |
| 57 virtual void oop_iterate(OopClosure* cl) { | |
| 58 Generation* g = as_gen(); | |
| 59 assert(g != NULL, "as_gen() NULL"); | |
| 60 g->oop_iterate(cl); | |
| 61 } | |
| 62 | |
| 63 virtual void object_iterate(ObjectClosure* cl) { | |
| 64 Generation* g = as_gen(); | |
| 65 assert(g != NULL, "as_gen() NULL"); | |
| 66 g->object_iterate(cl); | |
| 67 } | |
| 68 | |
| 69 // Performance Counter support | |
| 70 virtual void update_counters() { | |
| 71 Generation* g = as_gen(); | |
| 72 assert(g != NULL, "as_gen() NULL"); | |
| 73 g->update_counters(); | |
| 74 } | |
| 75 }; |