Mercurial > hg > truffle
annotate src/share/vm/runtime/handles.inline.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 | f95d63e2154a |
| 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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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 // these inline functions are in a separate file to break an include cycle | |
| 26 // between Thread and Handle | |
| 27 | |
| 28 inline Handle::Handle(oop obj) { | |
| 29 if (obj == NULL) { | |
| 30 _handle = NULL; | |
| 31 } else { | |
| 32 _handle = Thread::current()->handle_area()->allocate_handle(obj); | |
| 33 } | |
| 34 } | |
| 35 | |
| 36 | |
| 37 #ifndef ASSERT | |
| 38 inline Handle::Handle(Thread* thread, oop obj) { | |
| 39 assert(thread == Thread::current(), "sanity check"); | |
| 40 if (obj == NULL) { | |
| 41 _handle = NULL; | |
| 42 } else { | |
| 43 _handle = thread->handle_area()->allocate_handle(obj); | |
| 44 } | |
| 45 } | |
| 46 #endif // ASSERT | |
| 47 | |
| 48 | |
| 49 inline HandleMark::HandleMark() { | |
| 50 initialize(Thread::current()); | |
| 51 } | |
| 52 | |
| 53 | |
| 54 inline void HandleMark::push() { | |
| 55 // This is intentionally a NOP. pop_and_restore will reset | |
| 56 // values to the HandleMark further down the stack, typically | |
| 57 // in JavaCalls::call_helper. | |
| 58 debug_only(_area->_handle_mark_nesting++); | |
| 59 } | |
| 60 | |
| 61 inline void HandleMark::pop_and_restore() { | |
| 62 HandleArea* area = _area; // help compilers with poor alias analysis | |
| 63 // Delete later chunks | |
| 64 if( _chunk->next() ) { | |
| 65 _chunk->next_chop(); | |
| 66 } | |
| 67 // Roll back arena to saved top markers | |
| 68 area->_chunk = _chunk; | |
| 69 area->_hwm = _hwm; | |
| 70 area->_max = _max; | |
| 71 NOT_PRODUCT(area->set_size_in_bytes(_size_in_bytes);) | |
| 72 debug_only(area->_handle_mark_nesting--); | |
| 73 } |