[slimtensor] Add non-owning storage mode for wrapping external memory #16441
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Add non-owning constructor to MaybeOwningStorage that allows wrapping external memory without taking ownership. This is needed for from_blob() which creates tensors from user-provided data pointers. Changes: - Add MaybeOwningStorage(device, data, nbytes) non-owning constructor - Add is_owning() method to query ownership mode - Non-owning storage uses no-op deleter so external memory is not freed Differential Revision: [D89943727](https://our.internmc.facebook.com/intern/diff/D89943727/) [ghstack-poisoned]
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…rnal memory" Add non-owning constructor to MaybeOwningStorage that allows wrapping external memory without taking ownership. This is needed for from_blob() which creates tensors from user-provided data pointers. Changes: - Add MaybeOwningStorage(device, data, nbytes) non-owning constructor - Add is_owning() method to query ownership mode - Non-owning storage uses no-op deleter so external memory is not freed Differential Revision: [D89943727](https://our.internmc.facebook.com/intern/diff/D89943727/) [ghstack-poisoned]
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Stack from ghstack (oldest at bottom):
Add non-owning constructor to MaybeOwningStorage that allows wrapping
external memory without taking ownership. This is needed for from_blob()
which creates tensors from user-provided data pointers.
Changes:
Differential Revision: D89943727