Allow slicing a whole memory region #84
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xmakro
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Dec 4, 2025
ibverbs/src/lib.rs
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| /// Make a lifetime-independent slice representation of this memory region. | ||
| /// Unlike `LocalMemorySlice`, this supports 64-bit memory region lengths. | ||
| pub fn as_slice(&self) -> MemoryRegionSlice { | ||
| let bounds = (..unsafe { *self.inner.mr }.length); |
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these lines here seem obsolete, no need to recalculate the addr and length if we are taking the full range
xmakro
reviewed
Dec 4, 2025
ibverbs/src/lib.rs
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| } | ||
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| impl MemoryRegionSlice { | ||
| /// Get the address of the memory region. |
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maybe just make the struct fields pub instead of these getter methods
| } | ||
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| /// Make a slice of this memory region. | ||
| pub fn slice(&self, bounds: impl RangeBounds<usize>) -> LocalMemorySlice { |
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what is your use case for needing something lifetime independent?
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It can be useful to move MemoryRegion into a generic (rdma-agnostic) custom buffer pool struct, which, on drop, will call the MemoryRegion's destructor, thus deregistering the region right before deallocating the application memory. Thus, we need to be able to create slices outside of the MemoryRegion's lifetime
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This allows 64-bit slices unlike LocalMemoryRegion