[NFC][SYCL][Graph] Add successors/predecessors views + cleanup
#19332
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Part of refactoring to get rid of most (all?) `std::weak_ptr<node_impl>` and some of `std::shared_ptr<node_impl>` started in intel#19295. Use `nodes_range` from that PR to implement `successors`/`predecessors` views and update read-only accesses to the successors/predecessors to go through them. I'm not changing the data members `MSuccessors`/`MPredecessors` yet because it would affect unittests. I'd prefer to refactor most of the code in future PRs before making that change and updating unittests in one go. I'm updating some APIs to accept `node_impl &` instead of `std::shared_ptr` where the change is mostly localized to the callers iterating over successors/predecessors and doesn't spoil into other code too much. For those that weren't updated here we (temporarily) use `shared_from_this()` but I expect to eliminate those unnecessary copies when those interfaces will be updated in the subsequent PRs.
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Continuation of the refactoring in intel#19295 intel#19332
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Continuation of the refactoring in intel#19295 intel#19332
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Continuation of the refactoring in intel#19295 intel#19332
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Part of refactoring to get rid of most (all?)
std::weak_ptr<node_impl>and some ofstd::shared_ptr<node_impl>started in #19295. Usenodes_rangefrom that PR to implementsuccessors/predecessorsviews and update read-only accesses to the successors/predecessors to go through them.I'm not changing the data members
MSuccessors/MPredecessorsyet because it would affect unittests. I'd prefer to refactor most of the code in future PRs before making that change and updating unittests in one go.I'm updating some APIs to accept
node_impl &instead ofstd::shared_ptrwhere the change is mostly localized to the callers iterating over successors/predecessors and doesn't spoil into other code too much. For those that weren't updated here we (temporarily) useshared_from_this()but I expect to eliminate those unnecessary copies when those interfaces will be updated in the subsequent PRs.