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Fix dependency tracking for debugger visualizers

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This commit is contained in:
Michael Woerister 2023-05-16 13:37:46 +02:00
parent 72b2716246
commit 7f01893900
16 changed files with 133 additions and 117 deletions
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11
compiler/rustc_interface/src/passes.rs
View file

@ -486,6 +486,11 @@ fn write_out_deps(tcx: TyCtxt<'_>, outputs: &OutputFilenames, out_filenames: &[P
files.push(normalize_path(profile_sample.as_path().to_path_buf()));
}
// Debugger visualizer files
for debugger_visualizer in tcx.debugger_visualizers(LOCAL_CRATE) {
files.push(normalize_path(debugger_visualizer.path.clone().unwrap()));
}
if sess.binary_dep_depinfo() {
if let Some(ref backend) = sess.opts.unstable_opts.codegen_backend {
if backend.contains('.') {
@ -567,6 +572,12 @@ fn resolver_for_lowering<'tcx>(
// Make sure we don't mutate the cstore from here on.
tcx.untracked().cstore.leak();
{
let debugger_visualizers = rustc_passes::debugger_visualizer::collect(tcx.sess, &krate);
let feed = tcx.feed_local_crate();
feed.debugger_visualizers(debugger_visualizers);
}
let ty::ResolverOutputs {
global_ctxt: untracked_resolutions,
ast_lowering: untracked_resolver_for_lowering,

11
compiler/rustc_metadata/src/rmeta/encoder.rs
View file

@ -1852,7 +1852,16 @@ fn encode_proc_macros(&mut self) -> Option<ProcMacroData> {
fn encode_debugger_visualizers(&mut self) -> LazyArray<DebuggerVisualizerFile> {
empty_proc_macro!(self);
self.lazy_array(self.tcx.debugger_visualizers(LOCAL_CRATE).iter())
self.lazy_array(
self.tcx
.debugger_visualizers(LOCAL_CRATE)
.iter()
// Erase the path since it may contain privacy sensitive data
// that we don't want to end up in crate metadata.
// The path is only needed for the local crate because of
// `--emit dep-info`.
.map(DebuggerVisualizerFile::path_erased),
)
}
fn encode_crate_deps(&mut self) -> LazyArray<CrateDep> {

12
compiler/rustc_middle/src/hir/map/mod.rs
View file

@ -15,7 +15,7 @@
use rustc_middle::hir::nested_filter;
use rustc_span::def_id::StableCrateId;
use rustc_span::symbol::{kw, sym, Ident, Symbol};
use rustc_span::Span;
use rustc_span::{DebuggerVisualizerFile, Span};
use rustc_target::spec::abi::Abi;
#[inline]
@ -1165,11 +1165,21 @@ pub(super) fn crate_hash(tcx: TyCtxt<'_>, _: LocalCrate) -> Svh {
source_file_names.sort_unstable();
let debugger_visualizers: Vec<_> = tcx
.debugger_visualizers(LOCAL_CRATE)
.iter()
// We ignore the path to the visualizer file since it's not going to be
// encoded in crate metadata and we already hash the full contents of
// the file.
.map(DebuggerVisualizerFile::path_erased)
.collect();
let crate_hash: Fingerprint = tcx.with_stable_hashing_context(|mut hcx| {
let mut stable_hasher = StableHasher::new();
hir_body_hash.hash_stable(&mut hcx, &mut stable_hasher);
upstream_crates.hash_stable(&mut hcx, &mut stable_hasher);
source_file_names.hash_stable(&mut hcx, &mut stable_hasher);
debugger_visualizers.hash_stable(&mut hcx, &mut stable_hasher);
if tcx.sess.opts.incremental_relative_spans() {
let definitions = tcx.definitions_untracked();
let mut owner_spans: Vec<_> = krate

1
compiler/rustc_middle/src/query/mod.rs
View file

@ -1795,6 +1795,7 @@
arena_cache
desc { "looking up the debugger visualizers for this crate" }
separate_provide_extern
feedable
}
query postorder_cnums(_: ()) -> &'tcx [CrateNum] {
eval_always

50
compiler/rustc_passes/src/check_attr.rs
View file

@ -8,7 +8,6 @@
use rustc_ast::{ast, AttrStyle, Attribute, LitKind, MetaItemKind, MetaItemLit, NestedMetaItem};
use rustc_data_structures::fx::FxHashMap;
use rustc_errors::{Applicability, IntoDiagnosticArg, MultiSpan};
use rustc_expand::base::resolve_path;
use rustc_feature::{AttributeDuplicates, AttributeType, BuiltinAttribute, BUILTIN_ATTRIBUTE_MAP};
use rustc_hir as hir;
use rustc_hir::def_id::LocalDefId;
@ -1916,6 +1915,7 @@ fn check_allow_internal_unstable(
/// Checks if the items on the `#[debugger_visualizer]` attribute are valid.
fn check_debugger_visualizer(&self, attr: &Attribute, target: Target) -> bool {
// FIXME: mention that other checks are done in the query provider
match target {
Target::Mod => {}
_ => {
@ -1924,53 +1924,7 @@ fn check_debugger_visualizer(&self, attr: &Attribute, target: Target) -> bool {
}
}
let Some(hints) = attr.meta_item_list() else {
self.tcx.sess.emit_err(errors::DebugVisualizerInvalid { span: attr.span });
return false;
};
let hint = match hints.len() {
1 => &hints[0],
_ => {
self.tcx.sess.emit_err(errors::DebugVisualizerInvalid { span: attr.span });
return false;
}
};
let Some(meta_item) = hint.meta_item() else {
self.tcx.sess.emit_err(errors::DebugVisualizerInvalid { span: attr.span });
return false;
};
let visualizer_path = match (meta_item.name_or_empty(), meta_item.value_str()) {
(sym::natvis_file, Some(value)) => value,
(sym::gdb_script_file, Some(value)) => value,
(_, _) => {
self.tcx.sess.emit_err(errors::DebugVisualizerInvalid { span: meta_item.span });
return false;
}
};
let file =
match resolve_path(&self.tcx.sess.parse_sess, visualizer_path.as_str(), attr.span) {
Ok(file) => file,
Err(mut err) => {
err.emit();
return false;
}
};
match std::fs::File::open(&file) {
Ok(_) => true,
Err(error) => {
self.tcx.sess.emit_err(errors::DebugVisualizerUnreadable {
span: meta_item.span,
file: &file,
error,
});
false
}
}
true
}
/// Outputs an error for `#[allow_internal_unstable]` which can only be applied to macros.

118
compiler/rustc_passes/src/debugger_visualizer.rs
View file

@ -1,60 +1,64 @@
//! Detecting usage of the `#[debugger_visualizer]` attribute.
use hir::CRATE_HIR_ID;
use rustc_data_structures::fx::FxHashSet;
use rustc_ast::Attribute;
use rustc_data_structures::sync::Lrc;
use rustc_expand::base::resolve_path;
use rustc_hir as hir;
use rustc_hir::HirId;
use rustc_middle::query::{LocalCrate, Providers};
use rustc_middle::ty::TyCtxt;
use rustc_session::Session;
use rustc_span::{sym, DebuggerVisualizerFile, DebuggerVisualizerType};
use crate::errors::DebugVisualizerUnreadable;
use crate::errors::{DebugVisualizerInvalid, DebugVisualizerUnreadable};
fn check_for_debugger_visualizer(
tcx: TyCtxt<'_>,
hir_id: HirId,
debugger_visualizers: &mut FxHashSet<DebuggerVisualizerFile>,
) {
let attrs = tcx.hir().attrs(hir_id);
for attr in attrs {
impl DebuggerVisualizerCollector<'_> {
fn check_for_debugger_visualizer(&mut self, attr: &Attribute) {
if attr.has_name(sym::debugger_visualizer) {
let Some(list) = attr.meta_item_list() else {
continue
let Some(hints) = attr.meta_item_list() else {
self.sess.emit_err(DebugVisualizerInvalid { span: attr.span });
return;
};
let meta_item = match list.len() {
1 => match list[0].meta_item() {
Some(meta_item) => meta_item,
_ => continue,
},
_ => continue,
let hint = if hints.len() == 1 {
&hints[0]
} else {
self.sess.emit_err(DebugVisualizerInvalid { span: attr.span });
return;
};
let visualizer_type = match meta_item.name_or_empty() {
sym::natvis_file => DebuggerVisualizerType::Natvis,
sym::gdb_script_file => DebuggerVisualizerType::GdbPrettyPrinter,
_ => continue,
let Some(meta_item) = hint.meta_item() else {
self.sess.emit_err(DebugVisualizerInvalid { span: attr.span });
return;
};
let file = match meta_item.value_str() {
Some(value) => {
match resolve_path(&tcx.sess.parse_sess, value.as_str(), attr.span) {
Ok(file) => file,
_ => continue,
let (visualizer_type, visualizer_path) =
match (meta_item.name_or_empty(), meta_item.value_str()) {
(sym::natvis_file, Some(value)) => (DebuggerVisualizerType::Natvis, value),
(sym::gdb_script_file, Some(value)) => {
(DebuggerVisualizerType::GdbPrettyPrinter, value)
}
}
None => continue,
};
(_, _) => {
self.sess.emit_err(DebugVisualizerInvalid { span: meta_item.span });
return;
}
};
let file =
match resolve_path(&self.sess.parse_sess, visualizer_path.as_str(), attr.span) {
Ok(file) => file,
Err(mut err) => {
err.emit();
return;
}
};
match std::fs::read(&file) {
Ok(contents) => {
debugger_visualizers
.insert(DebuggerVisualizerFile::new(Lrc::from(contents), visualizer_type));
self.visualizers.push(DebuggerVisualizerFile::new(
Lrc::from(contents),
visualizer_type,
file,
));
}
Err(error) => {
tcx.sess.emit_err(DebugVisualizerUnreadable {
self.sess.emit_err(DebugVisualizerUnreadable {
span: meta_item.span,
file: &file,
error,
@ -65,31 +69,25 @@ fn check_for_debugger_visualizer(
}
}
struct DebuggerVisualizerCollector<'a> {
sess: &'a Session,
visualizers: Vec<DebuggerVisualizerFile>,
}
impl<'ast> rustc_ast::visit::Visitor<'ast> for DebuggerVisualizerCollector<'_> {
fn visit_attribute(&mut self, attr: &'ast Attribute) {
self.check_for_debugger_visualizer(attr);
rustc_ast::visit::walk_attribute(self, attr);
}
}
/// Traverses and collects the debugger visualizers for a specific crate.
fn debugger_visualizers(tcx: TyCtxt<'_>, _: LocalCrate) -> Vec<DebuggerVisualizerFile> {
pub fn collect(sess: &Session, krate: &rustc_ast::ast::Crate) -> Vec<DebuggerVisualizerFile> {
// Initialize the collector.
let mut debugger_visualizers = FxHashSet::default();
// Collect debugger visualizers in this crate.
tcx.hir().for_each_module(|id| {
check_for_debugger_visualizer(
tcx,
tcx.hir().local_def_id_to_hir_id(id),
&mut debugger_visualizers,
)
});
// Collect debugger visualizers on the crate attributes.
check_for_debugger_visualizer(tcx, CRATE_HIR_ID, &mut debugger_visualizers);
// Extract out the found debugger_visualizer items.
let mut visualizers = debugger_visualizers.into_iter().collect::<Vec<_>>();
let mut visitor = DebuggerVisualizerCollector { sess, visualizers: Vec::new() };
rustc_ast::visit::Visitor::visit_crate(&mut visitor, krate);
// Sort the visualizers so we always get a deterministic query result.
visualizers.sort();
visualizers
}
pub fn provide(providers: &mut Providers) {
providers.debugger_visualizers = debugger_visualizers;
visitor.visualizers.sort_unstable();
visitor.visualizers
}

3
compiler/rustc_passes/src/lib.rs
View file

@ -27,7 +27,7 @@
mod check_attr;
mod check_const;
pub mod dead;
mod debugger_visualizer;
pub mod debugger_visualizer;
mod diagnostic_items;
pub mod entry;
mod errors;
@ -50,7 +50,6 @@ pub fn provide(providers: &mut Providers) {
check_attr::provide(providers);
check_const::provide(providers);
dead::provide(providers);
debugger_visualizer::provide(providers);
diagnostic_items::provide(providers);
entry::provide(providers);
lang_items::provide(providers);

14
compiler/rustc_span/src/lib.rs
View file

@ -1272,11 +1272,21 @@ pub struct DebuggerVisualizerFile {
pub src: Lrc<[u8]>,
/// Indicates which visualizer type this targets.
pub visualizer_type: DebuggerVisualizerType,
// FIXME: Docs
pub path: Option<PathBuf>,
}
impl DebuggerVisualizerFile {
pub fn new(src: Lrc<[u8]>, visualizer_type: DebuggerVisualizerType) -> Self {
DebuggerVisualizerFile { src, visualizer_type }
pub fn new(src: Lrc<[u8]>, visualizer_type: DebuggerVisualizerType, path: PathBuf) -> Self {
DebuggerVisualizerFile { src, visualizer_type, path: Some(path) }
}
pub fn path_erased(&self) -> Self {
DebuggerVisualizerFile {
src: self.src.clone(),
visualizer_type: self.visualizer_type,
path: None,
}
}
}

1
src/tools/tidy/src/ui_tests.rs
View file

@ -35,6 +35,7 @@
"tests/ui/macros/syntax-extension-source-utils-files/includeme.fragment", // more include
"tests/ui/unused-crate-deps/test.mk", // why would you use make
"tests/ui/proc-macro/auxiliary/included-file.txt", // more include
"tests/ui/invalid/foo.natvis.xml", // sample debugger visualizer
];
fn check_entries(tests_path: &Path, bad: &mut bool) {

8
tests/run-make/debugger-visualizer-dep-info/Makefile Normal file
View file

@ -0,0 +1,8 @@
# ignore-windows-gnu
include ../tools.mk
all:
$(RUSTC) --emit dep-info main.rs
$(CGREP) "foo.py" < $(TMPDIR)/main.d
$(CGREP) "my_visualizers/bar.py" < $(TMPDIR)/main.d

1
tests/run-make/debugger-visualizer-dep-info/foo.py Normal file
View file

@ -0,0 +1 @@
# empty

12
tests/run-make/debugger-visualizer-dep-info/main.rs Normal file
View file

@ -0,0 +1,12 @@
#![debugger_visualizer(gdb_script_file = "foo.py")]
fn main() {
const _UNUSED: u32 = {
mod inner {
#![debugger_visualizer(gdb_script_file = "my_visualizers/bar.py")]
pub const XYZ: u32 = 123;
}
inner::XYZ + 1
};
}

1
tests/run-make/debugger-visualizer-dep-info/my_visualizers/bar.py Normal file
View file

@ -0,0 +1 @@
# empty

1
tests/ui/invalid/foo.natvis.xml Normal file
View file

@ -0,0 +1 @@
<!-- empty -->

2
tests/ui/invalid/invalid-debugger-visualizer-target.rs
View file

@ -1,2 +1,2 @@
#[debugger_visualizer(natvis_file = "../foo.natvis")] //~ ERROR attribute should be applied to a module
#[debugger_visualizer(natvis_file = "./foo.natvis.xml")] //~ ERROR attribute should be applied to a module
fn main() {}

4
tests/ui/invalid/invalid-debugger-visualizer-target.stderr
View file

@ -1,8 +1,8 @@
error: attribute should be applied to a module
--> $DIR/invalid-debugger-visualizer-target.rs:1:1
|
LL | #[debugger_visualizer(natvis_file = "../foo.natvis")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | #[debugger_visualizer(natvis_file = "./foo.natvis.xml")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to previous error