Contribute JIT write barrier documentation #11581
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@Akira1Saitoh @knn-k FYI |
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Also worth adding |
| UDATA objectDelta = (UDATA)object - base; | ||
| UDATA size = vmThread->omrVMThread->heapSizeForBarrierRange0; | ||
| if (objectDelta < size) { | ||
| /* object is old so check for concurrent barrier */ |
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I've got a question. What is old object in non-generational GC policy? What exactly is objectDelta < size checking here?
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This policy does not use a generational nursery and has only a flat "tenure" space. "Old" refers to that flat space. I imagine this was just a cut-and-paste remnant from some of the other barriers.
| UDATA objectDelta = (UDATA)object - base; | ||
| UDATA size = vmThread->omrVMThread->heapSizeForBarrierRange0; | ||
| if (objectDelta < size) { | ||
| /* object is old so check for concurrent barrier */ |
There was a problem hiding this comment.
This policy does not use a generational nursery and has only a flat "tenure" space. "Old" refers to that flat space. I imagine this was just a cut-and-paste remnant from some of the other barriers.
Describe the purpose and general operation of JIT write barriers for non-realtime garbage collection policies. Signed-off-by: Daryl Maier <maier@ca.ibm.com>
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Describe the purpose and general operation of JIT write barriers for non-realtime
garbage collection policies.
Signed-off-by: Daryl Maier maier@ca.ibm.com