Wait die and wound wait method?

Answer:
Two other algorithms are Wait/Die and Wound/Wait, each of which uses a symmetry-breaking technique. In both these algorithms there exists an older process (O) and a younger process (Y). Process age can be determined by a timestamp at process creation time. Smaller timestamps are older processes, while larger timestamps represent younger processes.

Wait/Die Wound/Wait
O needs a resource held by Y O waits Y dies
Y needs a resource held by O Y dies Y waits
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