1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
pub mod debug;
mod dep_node;
mod graph;
mod query;
mod serialized;
pub use dep_node::{DepNode, DepNodeParams, WorkProductId};
pub use graph::{
hash_result, DepGraph, DepNodeColor, DepNodeIndex, TaskDeps, TaskDepsRef, WorkProduct,
};
pub use query::DepGraphQuery;
pub use serialized::{SerializedDepGraph, SerializedDepNodeIndex};
use crate::ich::StableHashingContext;
use rustc_data_structures::profiling::SelfProfilerRef;
use rustc_serialize::{opaque::FileEncoder, Encodable};
use rustc_session::Session;
use std::fmt;
use std::hash::Hash;
pub trait DepContext: Copy {
type DepKind: self::DepKind;
/// Create a hashing context for hashing new results.
fn with_stable_hashing_context<R>(&self, f: impl FnOnce(StableHashingContext<'_>) -> R) -> R;
/// Access the DepGraph.
fn dep_graph(&self) -> &DepGraph<Self::DepKind>;
/// Access the profiler.
fn profiler(&self) -> &SelfProfilerRef;
/// Access the compiler session.
fn sess(&self) -> &Session;
/// Return whether this kind always require evaluation.
fn is_eval_always(&self, kind: Self::DepKind) -> bool;
fn fingerprint_style(&self, kind: Self::DepKind) -> FingerprintStyle;
/// Try to force a dep node to execute and see if it's green.
fn try_force_from_dep_node(&self, dep_node: DepNode<Self::DepKind>) -> bool;
/// Load data from the on-disk cache.
fn try_load_from_on_disk_cache(&self, dep_node: DepNode<Self::DepKind>);
}
pub trait HasDepContext: Copy {
type DepKind: self::DepKind;
type DepContext: self::DepContext<DepKind = Self::DepKind>;
fn dep_context(&self) -> &Self::DepContext;
}
impl<T: DepContext> HasDepContext for T {
type DepKind = T::DepKind;
type DepContext = Self;
fn dep_context(&self) -> &Self::DepContext {
self
}
}
/// Describes the contents of the fingerprint generated by a given query.
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub enum FingerprintStyle {
/// The fingerprint is actually a DefPathHash.
DefPathHash,
/// Query key was `()` or equivalent, so fingerprint is just zero.
Unit,
/// Some opaque hash.
Opaque,
}
impl FingerprintStyle {
#[inline]
pub fn reconstructible(self) -> bool {
match self {
FingerprintStyle::DefPathHash | FingerprintStyle::Unit => true,
FingerprintStyle::Opaque => false,
}
}
}
/// Describe the different families of dependency nodes.
pub trait DepKind: Copy + fmt::Debug + Eq + Hash + Send + Encodable<FileEncoder> + 'static {
/// DepKind to use when incr. comp. is turned off.
const NULL: Self;
/// DepKind to use to create the initial forever-red node.
const RED: Self;
/// Implementation of `std::fmt::Debug` for `DepNode`.
fn debug_node(node: &DepNode<Self>, f: &mut fmt::Formatter<'_>) -> fmt::Result;
/// Execute the operation with provided dependencies.
fn with_deps<OP, R>(deps: TaskDepsRef<'_, Self>, op: OP) -> R
where
OP: FnOnce() -> R;
/// Access dependencies from current implicit context.
fn read_deps<OP>(op: OP)
where
OP: for<'a> FnOnce(TaskDepsRef<'a, Self>);
}
|
