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unwind on cancel

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This commit is contained in:
Aleksey Kladov 2019-01-09 22:51:05 +03:00
parent c2b8aa1ce5
commit cf20ecae9f
3 changed files with 20 additions and 11 deletions
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8
Cargo.lock generated
View file

@ -661,7 +661,7 @@ dependencies = [
"ra_syntax 0.1.0",
"relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1",
"test_utils 0.1.0",
]
@ -680,7 +680,7 @@ dependencies = [
"ra_syntax 0.1.0",
"relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1",
"test_utils 0.1.0",
]
@ -700,7 +700,7 @@ dependencies = [
"rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
"relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
"salsa 0.9.1",
"test_utils 0.1.0",
"unicase 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -1030,7 +1030,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "salsa"
version = "0.9.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"derive-new 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
"indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@ -1587,7 +1586,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum rusty-fork 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9591f190d2852720b679c21f66ad929f9f1d7bb09d1193c26167586029d8489c"
"checksum ryu 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "eb9e9b8cde282a9fe6a42dd4681319bfb63f121b8a8ee9439c6f4107e58a46f7"
"checksum safemem 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8dca453248a96cb0749e36ccdfe2b0b4e54a61bfef89fb97ec621eb8e0a93dd9"
"checksum salsa 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "442ef4acdb48c0e24ddaf4f3b62555af2d1da7047f2f26acd54ae73010aa0c02"
"checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"

1
Cargo.toml
View file

@ -7,3 +7,4 @@ debug = true
[patch.'crates-io']
cargo_metadata = { git = "https://github.com/oli-obk/cargo_metadata.git", rev="f73e27b24e" }
salsa = { path = "/home/matklad/projects/salsa" }

22
crates/ra_db/src/lib.rs
View file

@ -5,6 +5,8 @@ mod input;
mod loc2id;
pub mod mock;
use std::panic;
use ra_syntax::{TextUnit, TextRange, SourceFile, TreePtr};
pub use crate::{
@ -18,13 +20,21 @@ pub use crate::{
loc2id::LocationIntener,
};
pub trait BaseDatabase: salsa::Database {
pub trait BaseDatabase: salsa::Database + panic::RefUnwindSafe {
fn check_canceled(&self) -> Cancelable<()> {
if self.salsa_runtime().is_current_revision_canceled() {
Err(Canceled::new())
} else {
Ok(())
}
self.salsa_runtime()
.unwind_if_current_revision_is_canceled();
Ok(())
}
fn catch_canceled<F: FnOnce(&Self) -> T + panic::UnwindSafe, T>(
&self,
f: F,
) -> Result<T, Canceled> {
panic::catch_unwind(|| f(self)).map_err(|err| match err.downcast::<salsa::Canceled>() {
Ok(_) => Canceled::new(),
Err(payload) => panic::resume_unwind(payload),
})
}
}