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6863023: need non-perm oops in code cache for JSR 292

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Make a special root-list for those few nmethods which might contain non-perm oops.

Reviewed-by: twisti, kvn, never, jmasa, ysr
This commit is contained in:
John R Rose 2009-09-15 21:53:47 -07:00
parent 1cf5b7ae11
commit e261aecad8
74 changed files with 979 additions and 279 deletions
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10
hotspot/src/share/vm/memory/genMarkSweep.cpp
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@ -240,9 +240,12 @@ void GenMarkSweep::mark_sweep_phase1(int level,
gch->gen_process_strong_roots(level,
false, // Younger gens are not roots.
true, // activate StrongRootsScope
true, // Collecting permanent generation.
SharedHeap::SO_SystemClasses,
&follow_root_closure, &follow_root_closure);
&follow_root_closure,
true, // walk code active on stacks
&follow_root_closure);
// Process reference objects found during marking
{
@ -330,14 +333,19 @@ void GenMarkSweep::mark_sweep_phase3(int level) {
gch->gen_process_strong_roots(level,
false, // Younger gens are not roots.
true, // activate StrongRootsScope
true, // Collecting permanent generation.
SharedHeap::SO_AllClasses,
&adjust_root_pointer_closure,
false, // do not walk code
&adjust_root_pointer_closure);
// Now adjust pointers in remaining weak roots. (All of which should
// have been cleared if they pointed to non-surviving objects.)
CodeBlobToOopClosure adjust_code_pointer_closure(&adjust_pointer_closure,
/*do_marking=*/ false);
gch->gen_process_weak_roots(&adjust_root_pointer_closure,
&adjust_code_pointer_closure,
&adjust_pointer_closure);
adjust_marks();