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#![deny(missing_docs)]
#![cfg_attr(test, deny(warnings))]
#![cfg_attr(test, deny(bad_style))]
#![cfg_attr(test, deny(future_incompatible))]
#![cfg_attr(test, deny(nonstandard_style))]
#![cfg_attr(test, deny(rust_2018_compatibility))]
#![cfg_attr(test, deny(rust_2018_idioms))]
#![cfg_attr(test, deny(unused))]
#![cfg_attr(feature = "clippy", feature(plugin))]
#![cfg_attr(feature = "clippy", plugin(clippy))]
#![cfg_attr(feature = "clippy", allow(inline_always))]
#![cfg_attr(feature = "nightly", feature(integer_atomics))]
#[cfg(all(not(feature = "nightly"), target_pointer_width = "32"))]
compile_error!(
"32 bit architectures require a nightly compiler for now. \
See https://github.com/spacejam/sled/issues/145"
);
#[macro_use]
extern crate serde_derive;
extern crate bincode;
extern crate fs2;
extern crate historian;
extern crate serde;
extern crate sled_sync as sync;
#[macro_use]
extern crate lazy_static;
#[macro_use]
extern crate log as _log;
#[cfg(unix)]
extern crate libc;
extern crate rayon;
#[cfg(feature = "zstd")]
extern crate zstd;
#[cfg(feature = "failpoints")]
#[macro_use]
extern crate fail;
extern crate pagetable;
macro_rules! maybe_fail {
($e:expr) => {
#[cfg(feature = "failpoints")]
fail_point!($e, |_| Err(Error::FailPoint));
};
}
macro_rules! rep_no_copy {
($e:expr; $n:expr) => {{
let mut v = Vec::with_capacity($n);
for _ in 0..$n {
v.push($e);
}
v
}};
}
mod blob_io;
mod config;
mod constants;
mod diskptr;
mod ds;
mod flusher;
mod hash;
mod iobuf;
mod iterator;
mod materializer;
mod metrics;
mod pagecache;
mod parallel_io;
mod reader;
mod reservation;
mod result;
mod segment;
mod snapshot;
mod tx;
mod util;
#[cfg(feature = "event_log")]
pub mod event_log;
pub mod log;
use std::{
cell::UnsafeCell,
fmt::{self, Debug},
io,
sync::atomic::AtomicUsize,
sync::atomic::Ordering::SeqCst,
};
use bincode::{deserialize, serialize};
use serde::{de::DeserializeOwned, Serialize};
#[doc(hidden)]
use self::log::{
MessageHeader, MessageKind, SegmentHeader, SegmentTrailer,
};
#[cfg(not(unix))]
use self::metrics::uptime;
use self::{
blob_io::{gc_blobs, read_blob, remove_blob, write_blob},
ds::{node_from_frag_vec, Lru, Node, Stack, StackIter},
hash::{crc16_arr, crc64},
iobuf::IoBufs,
iterator::LogIter,
metrics::{clock, measure},
pagecache::{LoggedUpdate, Update},
parallel_io::Pio,
reader::LogReader,
segment::{raw_segment_iter_from, SegmentAccountant},
snapshot::{advance_snapshot, PageState},
util::{arr_to_u32, arr_to_u64, u32_to_arr, u64_to_arr},
};
pub use self::{
config::{Config, ConfigBuilder},
diskptr::DiskPtr,
log::{Log, LogRead},
materializer::{Materializer, NullMaterializer},
metrics::M,
pagecache::{CacheEntry, PageCache, PageGet, PagePtr},
reservation::Reservation,
result::{Error, Result},
segment::SegmentMode,
sync::{debug_delay, pin, unprotected, Guard},
tx::Tx,
};
#[doc(hidden)]
pub use self::{
constants::{
BLOB_FLUSH, BLOB_INLINE_LEN, EVIL_BYTE, FAILED_FLUSH,
INLINE_FLUSH, MINIMUM_ITEMS_PER_SEGMENT, MSG_HEADER_LEN,
SEGMENT_PAD, SEG_HEADER_LEN, SEG_TRAILER_LEN,
},
metrics::Measure,
snapshot::{read_snapshot_or_default, Snapshot},
};
pub type SegmentId = usize;
pub type LogId = u64;
pub type BlobPointer = Lsn;
pub type Lsn = i64;
pub type PageId = usize;
pub type MergeOperator =
fn(key: &[u8], last_value: Option<&[u8]>, new_merge: &[u8])
-> Option<Vec<u8>>;