[orc-rt] Add allocation-action execution support. #157244
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This commit contains executor-side support for ORC allocation actions (see e50aea5). An AllocAction is a function pointer with type orc_rt_WrapperFunctionBuffer (*)(const char *ArgData, size_t ArgSize), along with an associated blob of argument bytes. An AllocActionPair is a pair of AllocActions, one to be run at memory finalization time and another to be run at deallocation time. The runFinalizeActions function can be used to run all non-null finalize actions in a sequence of AllocActionPairs, returning the corresponding sequence of deallocation actions on success. The runDeallocActions function can be used to run a sequence of dealloc actions returned by runFinalizeActions.
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This commit contains executor-side support for ORC allocation actions (see e50aea5).
An AllocAction is a function pointer with type
orc_rt_WrapperFunctionBuffer (*)(const char *ArgData, size_t ArgSize), along with an associated blob of argument bytes.
An AllocActionPair is a pair of AllocActions, one to be run at memory finalization time and another to be run at deallocation time.
The runFinalizeActions function can be used to run all non-null finalize actions in a sequence of AllocActionPairs, returning the corresponding sequence of deallocation actions on success.
The runDeallocActions function can be used to run a sequence of dealloc actions returned by runFinalizeActions.