indexedlog: initial boilerplate

Summary:
First step of a storage-related building block that is in Rust. The goal is
to use it to replace revlog, obsstore and packfiles.

Extern crates that are likely useful are added to reduce future churns.

Reviewed By: DurhamG

Differential Revision: D7108434

fbshipit-source-id: 97ebd9ba69547d876dcecc05e604acdf9088877e

lib/indexedlog/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "indexedlog"
+version = "0.1.0"
+
+[dependencies]
+atomicwrites = "*"
+byteorder = "*"
+failure = "*"
+fs2 = "*"
+memmap = "*"
+twox-hash = "*"
+vlqencoding = { path = "../vlqencoding" }
+
+[dev-dependencies]
+criterion = "*"
+quickcheck = "*"
+rand = "*"
+tempdir = "*"
+
+[[bench]]
+name = "bench"
+harness = false

lib/indexedlog/benches/bench.rs

@@ -0,0 +1,9 @@
+#[macro_use]
+extern crate criterion;
+
+use criterion::Criterion;
+
+fn criterion_benchmark(_: &mut Criterion) {}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);

lib/indexedlog/src/lib.rs

@@ -0,0 +1,14 @@
+extern crate atomicwrites;
+extern crate byteorder;
+extern crate failure;
+extern crate fs2;
+extern crate memmap;
+#[cfg(test)]
+#[macro_use]
+extern crate quickcheck;
+#[cfg(test)]
+extern crate rand;
+#[cfg(test)]
+extern crate tempdir;
+extern crate twox_hash;
+extern crate vlqencoding;