Mercurial > hg > truffle
comparison src/share/vm/interpreter/templateInterpreter.cpp @ 3249:e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer.
Reviewed-by: kvn, iveresov, never, tonyp, dholmes
author | johnc |
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date | Thu, 07 Apr 2011 09:53:20 -0700 |
parents | 8012aa3ccede |
children | 38fa55e5e792 |
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3248:e6beb62de02d | 3249:e1162778c1c8 |
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370 method_entry(java_lang_math_tan ) | 370 method_entry(java_lang_math_tan ) |
371 method_entry(java_lang_math_abs ) | 371 method_entry(java_lang_math_abs ) |
372 method_entry(java_lang_math_sqrt ) | 372 method_entry(java_lang_math_sqrt ) |
373 method_entry(java_lang_math_log ) | 373 method_entry(java_lang_math_log ) |
374 method_entry(java_lang_math_log10) | 374 method_entry(java_lang_math_log10) |
375 method_entry(java_lang_ref_reference_get) | |
375 | 376 |
376 // all native method kinds (must be one contiguous block) | 377 // all native method kinds (must be one contiguous block) |
377 Interpreter::_native_entry_begin = Interpreter::code()->code_end(); | 378 Interpreter::_native_entry_begin = Interpreter::code()->code_end(); |
378 method_entry(native) | 379 method_entry(native) |
379 method_entry(native_synchronized) | 380 method_entry(native_synchronized) |