package uring

v0.6

• Fix SIGSEGV on Uring.wait (@edwintorok #89). io_uring_submit_and_wait_timeout can return a success status but with a NULL cqe.
• Remove unused variable in C stub (@talex5 #87).
• Use caml_enter_blocking_section when calling io_uring_submit (@TheLortex #86).

v0.5

• Decouple Heap entries from ring size (@haesbaert #81). Before this change, we could only wait for at most queue_depth events at a time.
• Update to liburing-2.3 (@avsm #82).

v0.4

New features:

• Add Uring.timeout (@bikallem #59).
• Add Uring.read and Uring.write (@haesbaert #62). These are simple wrappers for read(2) and write(2).
• Add Uring.unlink (@talex5 #65). This uses unlinkat(2), and so can also be used to remove directories.
• Add support for uring probes (@talex5 #70). Allows checking whether a feature is supported by the kernel at runtime.
• Rename peek to get_cqe_nonblocking (@talex5 #67). The old name was confusing because it does remove the item from the ring.
• Update to liburing 2.2 (@talex5 #56).
• Add Uring.active_ops (@talex5 #68). Avoids needing to track the value returned by submit, which is important as it is sometimes called automatically.
• Add Uring.iov_max constant (@talex5 #76).
• Add Uring.get_debug_stats (@talex5 #64). This should make it easier to check that the uring is behaving as expected.

Performance:

• Introduce a Sketch buffer per Uring (@haesbaert #63). The main motivation of this change is to avoid having one malloc per packet in readv(2), writev(2) and friends.
• Use submit_and_wait where appropriate (@haesbaert #69).
• Add a readv benchmark (@talex5 #64).
• Avoid unnecessary use of CAMLparam in the C stubs (@haesbaert #61).

Bug fixes:

• Prevent ring from being used after exit (@talex5 #78).

Build changes:

• Remove use of notty for formatting benchmark results (@talex5 #71). It prevented uring from being tested on OCaml 5.
• Use MDX for README (@talex5 #57).
• Convert tests to MDX (@talex5 #58 #73).
• Use opam-repository syntax for license (@kit-ty-kate #72).
• Remove internal is_dirty flag (@talex5 #77).

v0.3

Breaking changes:

• Don't allocate a fixed buffer by default (@talex5 #53). If you want a fixed buffer, you now need to call set_fixed_buffer.

New features:

• Add sendmsg and recvmsg (@patricoferris #49).
• Allow sending and receiving FDs using SCM_RIGHTS (@talex5 #52).

Other changes:

• Update tests to cmdliner 1.1.0 (@patricoferris #50).

v0.2

New features:

• Allow running in polling mode (@talex5 #44).

Other changes:

• Update to liburing 2.1 (@talex5 #46).
• Remove bigstringaf dependency (@talex5 #43).
• Cmdliner is only needed for tests (@talex5 #45).
• Remove test dependencies on Bos and Rresult (@talex5 #40).
• Address Fmt.strf deprecation error (@bikallem #38).
• Update to cstruct 6.0.1 for shiftv (@talex5 #36).

v0.1

• Initial release.