709 lines
27 KiB
Rust
709 lines
27 KiB
Rust
// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
use dep_graph::DepGraph;
|
|
use hir::def_id::{CrateNum, DefIndex};
|
|
use hir::svh::Svh;
|
|
use lint;
|
|
use middle::cstore::CrateStore;
|
|
use middle::dependency_format;
|
|
use session::search_paths::PathKind;
|
|
use session::config::{DebugInfoLevel, PanicStrategy};
|
|
use ty::tls;
|
|
use util::nodemap::{NodeMap, FnvHashMap};
|
|
use util::common::duration_to_secs_str;
|
|
use mir::transform as mir_pass;
|
|
|
|
use syntax::ast::NodeId;
|
|
use errors::{self, DiagnosticBuilder};
|
|
use errors::emitter::{Emitter, EmitterWriter};
|
|
use syntax::json::JsonEmitter;
|
|
use syntax::feature_gate;
|
|
use syntax::parse;
|
|
use syntax::parse::ParseSess;
|
|
use syntax::parse::token;
|
|
use syntax::{ast, codemap};
|
|
use syntax::feature_gate::AttributeType;
|
|
use syntax_pos::{Span, MultiSpan};
|
|
|
|
use rustc_back::target::Target;
|
|
use rustc_data_structures::flock;
|
|
use llvm;
|
|
|
|
use std::path::{Path, PathBuf};
|
|
use std::cell::{self, Cell, RefCell};
|
|
use std::collections::HashMap;
|
|
use std::env;
|
|
use std::ffi::CString;
|
|
use std::rc::Rc;
|
|
use std::fmt;
|
|
use std::time::Duration;
|
|
use libc::c_int;
|
|
|
|
pub mod config;
|
|
pub mod filesearch;
|
|
pub mod search_paths;
|
|
|
|
// Represents the data associated with a compilation
|
|
// session for a single crate.
|
|
pub struct Session {
|
|
pub dep_graph: DepGraph,
|
|
pub target: config::Config,
|
|
pub host: Target,
|
|
pub opts: config::Options,
|
|
pub cstore: Rc<for<'a> CrateStore<'a>>,
|
|
pub parse_sess: ParseSess,
|
|
// For a library crate, this is always none
|
|
pub entry_fn: RefCell<Option<(NodeId, Span)>>,
|
|
pub entry_type: Cell<Option<config::EntryFnType>>,
|
|
pub plugin_registrar_fn: Cell<Option<ast::NodeId>>,
|
|
pub derive_registrar_fn: Cell<Option<ast::NodeId>>,
|
|
pub default_sysroot: Option<PathBuf>,
|
|
// The name of the root source file of the crate, in the local file system.
|
|
// The path is always expected to be absolute. `None` means that there is no
|
|
// source file.
|
|
pub local_crate_source_file: Option<PathBuf>,
|
|
pub working_dir: PathBuf,
|
|
pub lint_store: RefCell<lint::LintStore>,
|
|
pub lints: RefCell<NodeMap<Vec<(lint::LintId, Span, String)>>>,
|
|
pub plugin_llvm_passes: RefCell<Vec<String>>,
|
|
pub mir_passes: RefCell<mir_pass::Passes>,
|
|
pub plugin_attributes: RefCell<Vec<(String, AttributeType)>>,
|
|
pub crate_types: RefCell<Vec<config::CrateType>>,
|
|
pub dependency_formats: RefCell<dependency_format::Dependencies>,
|
|
// The crate_disambiguator is constructed out of all the `-C metadata`
|
|
// arguments passed to the compiler. Its value together with the crate-name
|
|
// forms a unique global identifier for the crate. It is used to allow
|
|
// multiple crates with the same name to coexist. See the
|
|
// trans::back::symbol_names module for more information.
|
|
pub crate_disambiguator: RefCell<token::InternedString>,
|
|
pub features: RefCell<feature_gate::Features>,
|
|
|
|
/// The maximum recursion limit for potentially infinitely recursive
|
|
/// operations such as auto-dereference and monomorphization.
|
|
pub recursion_limit: Cell<usize>,
|
|
|
|
/// The metadata::creader module may inject an allocator/panic_runtime
|
|
/// dependency if it didn't already find one, and this tracks what was
|
|
/// injected.
|
|
pub injected_allocator: Cell<Option<CrateNum>>,
|
|
pub injected_panic_runtime: Cell<Option<CrateNum>>,
|
|
|
|
/// Map from imported macro spans (which consist of
|
|
/// the localized span for the macro body) to the
|
|
/// macro name and defintion span in the source crate.
|
|
pub imported_macro_spans: RefCell<HashMap<Span, (String, Span)>>,
|
|
|
|
incr_comp_session: RefCell<IncrCompSession>,
|
|
|
|
/// Some measurements that are being gathered during compilation.
|
|
pub perf_stats: PerfStats,
|
|
|
|
next_node_id: Cell<ast::NodeId>,
|
|
}
|
|
|
|
pub struct PerfStats {
|
|
// The accumulated time needed for computing the SVH of the crate
|
|
pub svh_time: Cell<Duration>,
|
|
// The accumulated time spent on computing incr. comp. hashes
|
|
pub incr_comp_hashes_time: Cell<Duration>,
|
|
// The number of incr. comp. hash computations performed
|
|
pub incr_comp_hashes_count: Cell<u64>,
|
|
// The accumulated time spent on computing symbol hashes
|
|
pub symbol_hash_time: Cell<Duration>,
|
|
}
|
|
|
|
impl Session {
|
|
pub fn local_crate_disambiguator(&self) -> token::InternedString {
|
|
self.crate_disambiguator.borrow().clone()
|
|
}
|
|
pub fn struct_span_warn<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_warn(sp, msg)
|
|
}
|
|
pub fn struct_span_warn_with_code<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str,
|
|
code: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_warn_with_code(sp, msg, code)
|
|
}
|
|
pub fn struct_warn<'a>(&'a self, msg: &str) -> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_warn(msg)
|
|
}
|
|
pub fn struct_span_err<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_err(sp, msg)
|
|
}
|
|
pub fn struct_span_err_with_code<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str,
|
|
code: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_err_with_code(sp, msg, code)
|
|
}
|
|
pub fn struct_err<'a>(&'a self, msg: &str) -> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_err(msg)
|
|
}
|
|
pub fn struct_span_fatal<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_fatal(sp, msg)
|
|
}
|
|
pub fn struct_span_fatal_with_code<'a, S: Into<MultiSpan>>(&'a self,
|
|
sp: S,
|
|
msg: &str,
|
|
code: &str)
|
|
-> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_span_fatal_with_code(sp, msg, code)
|
|
}
|
|
pub fn struct_fatal<'a>(&'a self, msg: &str) -> DiagnosticBuilder<'a> {
|
|
self.diagnostic().struct_fatal(msg)
|
|
}
|
|
|
|
pub fn span_fatal<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
|
|
panic!(self.diagnostic().span_fatal(sp, msg))
|
|
}
|
|
pub fn span_fatal_with_code<S: Into<MultiSpan>>(&self, sp: S, msg: &str, code: &str) -> ! {
|
|
panic!(self.diagnostic().span_fatal_with_code(sp, msg, code))
|
|
}
|
|
pub fn fatal(&self, msg: &str) -> ! {
|
|
panic!(self.diagnostic().fatal(msg))
|
|
}
|
|
pub fn span_err_or_warn<S: Into<MultiSpan>>(&self, is_warning: bool, sp: S, msg: &str) {
|
|
if is_warning {
|
|
self.span_warn(sp, msg);
|
|
} else {
|
|
self.span_err(sp, msg);
|
|
}
|
|
}
|
|
pub fn span_err<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
|
|
self.diagnostic().span_err(sp, msg)
|
|
}
|
|
pub fn span_err_with_code<S: Into<MultiSpan>>(&self, sp: S, msg: &str, code: &str) {
|
|
self.diagnostic().span_err_with_code(sp, &msg, code)
|
|
}
|
|
pub fn err(&self, msg: &str) {
|
|
self.diagnostic().err(msg)
|
|
}
|
|
pub fn err_count(&self) -> usize {
|
|
self.diagnostic().err_count()
|
|
}
|
|
pub fn has_errors(&self) -> bool {
|
|
self.diagnostic().has_errors()
|
|
}
|
|
pub fn abort_if_errors(&self) {
|
|
self.diagnostic().abort_if_errors();
|
|
}
|
|
pub fn track_errors<F, T>(&self, f: F) -> Result<T, usize>
|
|
where F: FnOnce() -> T
|
|
{
|
|
let old_count = self.err_count();
|
|
let result = f();
|
|
let errors = self.err_count() - old_count;
|
|
if errors == 0 {
|
|
Ok(result)
|
|
} else {
|
|
Err(errors)
|
|
}
|
|
}
|
|
pub fn span_warn<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
|
|
self.diagnostic().span_warn(sp, msg)
|
|
}
|
|
pub fn span_warn_with_code<S: Into<MultiSpan>>(&self, sp: S, msg: &str, code: &str) {
|
|
self.diagnostic().span_warn_with_code(sp, msg, code)
|
|
}
|
|
pub fn warn(&self, msg: &str) {
|
|
self.diagnostic().warn(msg)
|
|
}
|
|
pub fn opt_span_warn<S: Into<MultiSpan>>(&self, opt_sp: Option<S>, msg: &str) {
|
|
match opt_sp {
|
|
Some(sp) => self.span_warn(sp, msg),
|
|
None => self.warn(msg),
|
|
}
|
|
}
|
|
/// Delay a span_bug() call until abort_if_errors()
|
|
pub fn delay_span_bug<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
|
|
self.diagnostic().delay_span_bug(sp, msg)
|
|
}
|
|
pub fn note_without_error(&self, msg: &str) {
|
|
self.diagnostic().note_without_error(msg)
|
|
}
|
|
pub fn span_note_without_error<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
|
|
self.diagnostic().span_note_without_error(sp, msg)
|
|
}
|
|
pub fn span_unimpl<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
|
|
self.diagnostic().span_unimpl(sp, msg)
|
|
}
|
|
pub fn unimpl(&self, msg: &str) -> ! {
|
|
self.diagnostic().unimpl(msg)
|
|
}
|
|
pub fn add_lint(&self,
|
|
lint: &'static lint::Lint,
|
|
id: ast::NodeId,
|
|
sp: Span,
|
|
msg: String) {
|
|
let lint_id = lint::LintId::of(lint);
|
|
let mut lints = self.lints.borrow_mut();
|
|
if let Some(arr) = lints.get_mut(&id) {
|
|
let tuple = (lint_id, sp, msg);
|
|
if !arr.contains(&tuple) {
|
|
arr.push(tuple);
|
|
}
|
|
return;
|
|
}
|
|
lints.insert(id, vec!((lint_id, sp, msg)));
|
|
}
|
|
pub fn reserve_node_ids(&self, count: usize) -> ast::NodeId {
|
|
let id = self.next_node_id.get();
|
|
|
|
match id.as_usize().checked_add(count) {
|
|
Some(next) => {
|
|
self.next_node_id.set(ast::NodeId::new(next));
|
|
}
|
|
None => bug!("Input too large, ran out of node ids!")
|
|
}
|
|
|
|
id
|
|
}
|
|
pub fn next_node_id(&self) -> NodeId {
|
|
self.reserve_node_ids(1)
|
|
}
|
|
pub fn diagnostic<'a>(&'a self) -> &'a errors::Handler {
|
|
&self.parse_sess.span_diagnostic
|
|
}
|
|
pub fn codemap<'a>(&'a self) -> &'a codemap::CodeMap {
|
|
self.parse_sess.codemap()
|
|
}
|
|
pub fn verbose(&self) -> bool { self.opts.debugging_opts.verbose }
|
|
pub fn time_passes(&self) -> bool { self.opts.debugging_opts.time_passes }
|
|
pub fn count_llvm_insns(&self) -> bool {
|
|
self.opts.debugging_opts.count_llvm_insns
|
|
}
|
|
pub fn time_llvm_passes(&self) -> bool {
|
|
self.opts.debugging_opts.time_llvm_passes
|
|
}
|
|
pub fn trans_stats(&self) -> bool { self.opts.debugging_opts.trans_stats }
|
|
pub fn meta_stats(&self) -> bool { self.opts.debugging_opts.meta_stats }
|
|
pub fn asm_comments(&self) -> bool { self.opts.debugging_opts.asm_comments }
|
|
pub fn no_verify(&self) -> bool { self.opts.debugging_opts.no_verify }
|
|
pub fn borrowck_stats(&self) -> bool { self.opts.debugging_opts.borrowck_stats }
|
|
pub fn print_llvm_passes(&self) -> bool {
|
|
self.opts.debugging_opts.print_llvm_passes
|
|
}
|
|
pub fn lto(&self) -> bool {
|
|
self.opts.cg.lto
|
|
}
|
|
pub fn no_landing_pads(&self) -> bool {
|
|
self.opts.debugging_opts.no_landing_pads ||
|
|
self.opts.cg.panic == PanicStrategy::Abort
|
|
}
|
|
pub fn unstable_options(&self) -> bool {
|
|
self.opts.debugging_opts.unstable_options
|
|
}
|
|
pub fn nonzeroing_move_hints(&self) -> bool {
|
|
self.opts.debugging_opts.enable_nonzeroing_move_hints
|
|
}
|
|
|
|
pub fn must_not_eliminate_frame_pointers(&self) -> bool {
|
|
self.opts.debuginfo != DebugInfoLevel::NoDebugInfo ||
|
|
!self.target.target.options.eliminate_frame_pointer
|
|
}
|
|
|
|
/// Returns the symbol name for the registrar function,
|
|
/// given the crate Svh and the function DefIndex.
|
|
pub fn generate_plugin_registrar_symbol(&self, svh: &Svh, index: DefIndex)
|
|
-> String {
|
|
format!("__rustc_plugin_registrar__{}_{}", svh, index.as_usize())
|
|
}
|
|
|
|
pub fn generate_derive_registrar_symbol(&self,
|
|
svh: &Svh,
|
|
index: DefIndex) -> String {
|
|
format!("__rustc_derive_registrar__{}_{}", svh, index.as_usize())
|
|
}
|
|
|
|
pub fn sysroot<'a>(&'a self) -> &'a Path {
|
|
match self.opts.maybe_sysroot {
|
|
Some (ref sysroot) => sysroot,
|
|
None => self.default_sysroot.as_ref()
|
|
.expect("missing sysroot and default_sysroot in Session")
|
|
}
|
|
}
|
|
pub fn target_filesearch(&self, kind: PathKind) -> filesearch::FileSearch {
|
|
filesearch::FileSearch::new(self.sysroot(),
|
|
&self.opts.target_triple,
|
|
&self.opts.search_paths,
|
|
kind)
|
|
}
|
|
pub fn host_filesearch(&self, kind: PathKind) -> filesearch::FileSearch {
|
|
filesearch::FileSearch::new(
|
|
self.sysroot(),
|
|
config::host_triple(),
|
|
&self.opts.search_paths,
|
|
kind)
|
|
}
|
|
|
|
pub fn init_incr_comp_session(&self,
|
|
session_dir: PathBuf,
|
|
lock_file: flock::Lock) {
|
|
let mut incr_comp_session = self.incr_comp_session.borrow_mut();
|
|
|
|
if let IncrCompSession::NotInitialized = *incr_comp_session { } else {
|
|
bug!("Trying to initialize IncrCompSession `{:?}`", *incr_comp_session)
|
|
}
|
|
|
|
*incr_comp_session = IncrCompSession::Active {
|
|
session_directory: session_dir,
|
|
lock_file: lock_file,
|
|
};
|
|
}
|
|
|
|
pub fn finalize_incr_comp_session(&self, new_directory_path: PathBuf) {
|
|
let mut incr_comp_session = self.incr_comp_session.borrow_mut();
|
|
|
|
if let IncrCompSession::Active { .. } = *incr_comp_session { } else {
|
|
bug!("Trying to finalize IncrCompSession `{:?}`", *incr_comp_session)
|
|
}
|
|
|
|
// Note: This will also drop the lock file, thus unlocking the directory
|
|
*incr_comp_session = IncrCompSession::Finalized {
|
|
session_directory: new_directory_path,
|
|
};
|
|
}
|
|
|
|
pub fn mark_incr_comp_session_as_invalid(&self) {
|
|
let mut incr_comp_session = self.incr_comp_session.borrow_mut();
|
|
|
|
let session_directory = match *incr_comp_session {
|
|
IncrCompSession::Active { ref session_directory, .. } => {
|
|
session_directory.clone()
|
|
}
|
|
_ => bug!("Trying to invalidate IncrCompSession `{:?}`",
|
|
*incr_comp_session),
|
|
};
|
|
|
|
// Note: This will also drop the lock file, thus unlocking the directory
|
|
*incr_comp_session = IncrCompSession::InvalidBecauseOfErrors {
|
|
session_directory: session_directory
|
|
};
|
|
}
|
|
|
|
pub fn incr_comp_session_dir(&self) -> cell::Ref<PathBuf> {
|
|
let incr_comp_session = self.incr_comp_session.borrow();
|
|
cell::Ref::map(incr_comp_session, |incr_comp_session| {
|
|
match *incr_comp_session {
|
|
IncrCompSession::NotInitialized => {
|
|
bug!("Trying to get session directory from IncrCompSession `{:?}`",
|
|
*incr_comp_session)
|
|
}
|
|
IncrCompSession::Active { ref session_directory, .. } |
|
|
IncrCompSession::Finalized { ref session_directory } |
|
|
IncrCompSession::InvalidBecauseOfErrors { ref session_directory } => {
|
|
session_directory
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
pub fn incr_comp_session_dir_opt(&self) -> Option<cell::Ref<PathBuf>> {
|
|
if self.opts.incremental.is_some() {
|
|
Some(self.incr_comp_session_dir())
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
pub fn print_perf_stats(&self) {
|
|
println!("Total time spent computing SVHs: {}",
|
|
duration_to_secs_str(self.perf_stats.svh_time.get()));
|
|
println!("Total time spent computing incr. comp. hashes: {}",
|
|
duration_to_secs_str(self.perf_stats.incr_comp_hashes_time.get()));
|
|
println!("Total number of incr. comp. hashes computed: {}",
|
|
self.perf_stats.incr_comp_hashes_count.get());
|
|
println!("Total time spent computing symbol hashes: {}",
|
|
duration_to_secs_str(self.perf_stats.symbol_hash_time.get()));
|
|
}
|
|
}
|
|
|
|
pub fn build_session(sopts: config::Options,
|
|
dep_graph: &DepGraph,
|
|
local_crate_source_file: Option<PathBuf>,
|
|
registry: errors::registry::Registry,
|
|
cstore: Rc<for<'a> CrateStore<'a>>)
|
|
-> Session {
|
|
build_session_with_codemap(sopts,
|
|
dep_graph,
|
|
local_crate_source_file,
|
|
registry,
|
|
cstore,
|
|
Rc::new(codemap::CodeMap::new()))
|
|
}
|
|
|
|
pub fn build_session_with_codemap(sopts: config::Options,
|
|
dep_graph: &DepGraph,
|
|
local_crate_source_file: Option<PathBuf>,
|
|
registry: errors::registry::Registry,
|
|
cstore: Rc<for<'a> CrateStore<'a>>,
|
|
codemap: Rc<codemap::CodeMap>)
|
|
-> Session {
|
|
// FIXME: This is not general enough to make the warning lint completely override
|
|
// normal diagnostic warnings, since the warning lint can also be denied and changed
|
|
// later via the source code.
|
|
let can_print_warnings = sopts.lint_opts
|
|
.iter()
|
|
.filter(|&&(ref key, _)| *key == "warnings")
|
|
.map(|&(_, ref level)| *level != lint::Allow)
|
|
.last()
|
|
.unwrap_or(true);
|
|
let treat_err_as_bug = sopts.debugging_opts.treat_err_as_bug;
|
|
|
|
let emitter: Box<Emitter> = match sopts.error_format {
|
|
config::ErrorOutputType::HumanReadable(color_config) => {
|
|
Box::new(EmitterWriter::stderr(color_config,
|
|
Some(codemap.clone())))
|
|
}
|
|
config::ErrorOutputType::Json => {
|
|
Box::new(JsonEmitter::stderr(Some(registry), codemap.clone()))
|
|
}
|
|
};
|
|
|
|
let diagnostic_handler =
|
|
errors::Handler::with_emitter(can_print_warnings,
|
|
treat_err_as_bug,
|
|
emitter);
|
|
|
|
build_session_(sopts,
|
|
dep_graph,
|
|
local_crate_source_file,
|
|
diagnostic_handler,
|
|
codemap,
|
|
cstore)
|
|
}
|
|
|
|
pub fn build_session_(sopts: config::Options,
|
|
dep_graph: &DepGraph,
|
|
local_crate_source_file: Option<PathBuf>,
|
|
span_diagnostic: errors::Handler,
|
|
codemap: Rc<codemap::CodeMap>,
|
|
cstore: Rc<for<'a> CrateStore<'a>>)
|
|
-> Session {
|
|
let host = match Target::search(config::host_triple()) {
|
|
Ok(t) => t,
|
|
Err(e) => {
|
|
panic!(span_diagnostic.fatal(&format!("Error loading host specification: {}", e)));
|
|
}
|
|
};
|
|
let target_cfg = config::build_target_config(&sopts, &span_diagnostic);
|
|
let p_s = parse::ParseSess::with_span_handler(span_diagnostic, codemap);
|
|
let default_sysroot = match sopts.maybe_sysroot {
|
|
Some(_) => None,
|
|
None => Some(filesearch::get_or_default_sysroot())
|
|
};
|
|
|
|
// Make the path absolute, if necessary
|
|
let local_crate_source_file = local_crate_source_file.map(|path|
|
|
if path.is_absolute() {
|
|
path.clone()
|
|
} else {
|
|
env::current_dir().unwrap().join(&path)
|
|
}
|
|
);
|
|
|
|
let sess = Session {
|
|
dep_graph: dep_graph.clone(),
|
|
target: target_cfg,
|
|
host: host,
|
|
opts: sopts,
|
|
cstore: cstore,
|
|
parse_sess: p_s,
|
|
// For a library crate, this is always none
|
|
entry_fn: RefCell::new(None),
|
|
entry_type: Cell::new(None),
|
|
plugin_registrar_fn: Cell::new(None),
|
|
derive_registrar_fn: Cell::new(None),
|
|
default_sysroot: default_sysroot,
|
|
local_crate_source_file: local_crate_source_file,
|
|
working_dir: env::current_dir().unwrap(),
|
|
lint_store: RefCell::new(lint::LintStore::new()),
|
|
lints: RefCell::new(NodeMap()),
|
|
plugin_llvm_passes: RefCell::new(Vec::new()),
|
|
mir_passes: RefCell::new(mir_pass::Passes::new()),
|
|
plugin_attributes: RefCell::new(Vec::new()),
|
|
crate_types: RefCell::new(Vec::new()),
|
|
dependency_formats: RefCell::new(FnvHashMap()),
|
|
crate_disambiguator: RefCell::new(token::intern("").as_str()),
|
|
features: RefCell::new(feature_gate::Features::new()),
|
|
recursion_limit: Cell::new(64),
|
|
next_node_id: Cell::new(NodeId::new(1)),
|
|
injected_allocator: Cell::new(None),
|
|
injected_panic_runtime: Cell::new(None),
|
|
imported_macro_spans: RefCell::new(HashMap::new()),
|
|
incr_comp_session: RefCell::new(IncrCompSession::NotInitialized),
|
|
perf_stats: PerfStats {
|
|
svh_time: Cell::new(Duration::from_secs(0)),
|
|
incr_comp_hashes_time: Cell::new(Duration::from_secs(0)),
|
|
incr_comp_hashes_count: Cell::new(0),
|
|
symbol_hash_time: Cell::new(Duration::from_secs(0)),
|
|
}
|
|
};
|
|
|
|
init_llvm(&sess);
|
|
|
|
sess
|
|
}
|
|
|
|
/// Holds data on the current incremental compilation session, if there is one.
|
|
#[derive(Debug)]
|
|
pub enum IncrCompSession {
|
|
// This is the state the session will be in until the incr. comp. dir is
|
|
// needed.
|
|
NotInitialized,
|
|
// This is the state during which the session directory is private and can
|
|
// be modified.
|
|
Active {
|
|
session_directory: PathBuf,
|
|
lock_file: flock::Lock,
|
|
},
|
|
// This is the state after the session directory has been finalized. In this
|
|
// state, the contents of the directory must not be modified any more.
|
|
Finalized {
|
|
session_directory: PathBuf,
|
|
},
|
|
// This is an error state that is reached when some compilation error has
|
|
// occurred. It indicates that the contents of the session directory must
|
|
// not be used, since they might be invalid.
|
|
InvalidBecauseOfErrors {
|
|
session_directory: PathBuf,
|
|
}
|
|
}
|
|
|
|
fn init_llvm(sess: &Session) {
|
|
unsafe {
|
|
// Before we touch LLVM, make sure that multithreading is enabled.
|
|
use std::sync::Once;
|
|
static INIT: Once = Once::new();
|
|
static mut POISONED: bool = false;
|
|
INIT.call_once(|| {
|
|
if llvm::LLVMStartMultithreaded() != 1 {
|
|
// use an extra bool to make sure that all future usage of LLVM
|
|
// cannot proceed despite the Once not running more than once.
|
|
POISONED = true;
|
|
}
|
|
|
|
configure_llvm(sess);
|
|
});
|
|
|
|
if POISONED {
|
|
bug!("couldn't enable multi-threaded LLVM");
|
|
}
|
|
}
|
|
}
|
|
|
|
unsafe fn configure_llvm(sess: &Session) {
|
|
let mut llvm_c_strs = Vec::new();
|
|
let mut llvm_args = Vec::new();
|
|
|
|
{
|
|
let mut add = |arg: &str| {
|
|
let s = CString::new(arg).unwrap();
|
|
llvm_args.push(s.as_ptr());
|
|
llvm_c_strs.push(s);
|
|
};
|
|
add("rustc"); // fake program name
|
|
if sess.time_llvm_passes() { add("-time-passes"); }
|
|
if sess.print_llvm_passes() { add("-debug-pass=Structure"); }
|
|
|
|
for arg in &sess.opts.cg.llvm_args {
|
|
add(&(*arg));
|
|
}
|
|
}
|
|
|
|
llvm::LLVMInitializePasses();
|
|
|
|
llvm::initialize_available_targets();
|
|
|
|
llvm::LLVMRustSetLLVMOptions(llvm_args.len() as c_int,
|
|
llvm_args.as_ptr());
|
|
}
|
|
|
|
pub fn early_error(output: config::ErrorOutputType, msg: &str) -> ! {
|
|
let emitter: Box<Emitter> = match output {
|
|
config::ErrorOutputType::HumanReadable(color_config) => {
|
|
Box::new(EmitterWriter::stderr(color_config,
|
|
None))
|
|
}
|
|
config::ErrorOutputType::Json => Box::new(JsonEmitter::basic()),
|
|
};
|
|
let handler = errors::Handler::with_emitter(true, false, emitter);
|
|
handler.emit(&MultiSpan::new(), msg, errors::Level::Fatal);
|
|
panic!(errors::FatalError);
|
|
}
|
|
|
|
pub fn early_warn(output: config::ErrorOutputType, msg: &str) {
|
|
let emitter: Box<Emitter> = match output {
|
|
config::ErrorOutputType::HumanReadable(color_config) => {
|
|
Box::new(EmitterWriter::stderr(color_config,
|
|
None))
|
|
}
|
|
config::ErrorOutputType::Json => Box::new(JsonEmitter::basic()),
|
|
};
|
|
let handler = errors::Handler::with_emitter(true, false, emitter);
|
|
handler.emit(&MultiSpan::new(), msg, errors::Level::Warning);
|
|
}
|
|
|
|
// Err(0) means compilation was stopped, but no errors were found.
|
|
// This would be better as a dedicated enum, but using try! is so convenient.
|
|
pub type CompileResult = Result<(), usize>;
|
|
|
|
pub fn compile_result_from_err_count(err_count: usize) -> CompileResult {
|
|
if err_count == 0 {
|
|
Ok(())
|
|
} else {
|
|
Err(err_count)
|
|
}
|
|
}
|
|
|
|
#[cold]
|
|
#[inline(never)]
|
|
pub fn bug_fmt(file: &'static str, line: u32, args: fmt::Arguments) -> ! {
|
|
// this wrapper mostly exists so I don't have to write a fully
|
|
// qualified path of None::<Span> inside the bug!() macro defintion
|
|
opt_span_bug_fmt(file, line, None::<Span>, args);
|
|
}
|
|
|
|
#[cold]
|
|
#[inline(never)]
|
|
pub fn span_bug_fmt<S: Into<MultiSpan>>(file: &'static str,
|
|
line: u32,
|
|
span: S,
|
|
args: fmt::Arguments) -> ! {
|
|
opt_span_bug_fmt(file, line, Some(span), args);
|
|
}
|
|
|
|
fn opt_span_bug_fmt<S: Into<MultiSpan>>(file: &'static str,
|
|
line: u32,
|
|
span: Option<S>,
|
|
args: fmt::Arguments) -> ! {
|
|
tls::with_opt(move |tcx| {
|
|
let msg = format!("{}:{}: {}", file, line, args);
|
|
match (tcx, span) {
|
|
(Some(tcx), Some(span)) => tcx.sess.diagnostic().span_bug(span, &msg),
|
|
(Some(tcx), None) => tcx.sess.diagnostic().bug(&msg),
|
|
(None, _) => panic!(msg)
|
|
}
|
|
});
|
|
unreachable!();
|
|
}
|