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| author | Chirantan Ekbote <chirantan@chromium.org> | 2019-07-29 18:29:04 +0900 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-10-07 19:00:34 +0000 |
| commit | bf67203f972215ce0119a1588ac900068c86fb33 (patch) | |
| tree | c96473e08d8868166d613bd21224a0466f0a6217 /devices/src/pci/ac97_bus_master.rs | |
| parent | 41e61d1fc373a38d37961793bb342c207d7adeea (diff) | |
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sys_util: Add ReadWriteAtVolatile trait and `*vectored` functions
Add the FileReadWriteAtVolatile trait, which is basically the same as the FileReadWriteVolatile trait but additionally takes an offest. This is only useful for types that are seekable and can allow concurrent operations on the same underlying type. Also add `*_vectored` versions of all the functions. These match the `*_vectored` functions in the standard library and can reduce the number of system calls needed to read or write a whole buffer. Implement both traits for `&mut T` if `T` implements them. Change the trait implementation for `File` to a macro so that we can also implement it for `GuestMemory`. BUG=b:136128319 TEST=unit tests Change-Id: I3d8eb7bba17fe3247e18649b1b04e21a91a841e2 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1724229 Auto-Submit: Chirantan Ekbote <chirantan@chromium.org> Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Daniel Verkamp <dverkamp@chromium.org> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Diffstat (limited to 'devices/src/pci/ac97_bus_master.rs')
0 files changed, 0 insertions, 0 deletions