nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-22 06:44:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Remove all jemalloc-related content

Browse Source 
This commit removes all jemalloc related submodules, configuration, etc,
from the bootstrap, from the standard library, and from the compiler.
This will be followed up with a change to use jemalloc specifically as
part of rustc on blessed platforms.
This commit is contained in:
Alex Crichton 2018-10-20 19:04:42 -07:00
parent d0c869c323
commit 61e89446ef
32 changed files with 9 additions and 446 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
.gitmodules vendored
View File

@ -2,9 +2,6 @@
path = src/llvm
url = https://github.com/rust-lang/llvm.git
branch = master
[submodule "src/jemalloc"]
path = src/jemalloc
url = https://github.com/rust-lang/jemalloc.git
[submodule "src/rust-installer"]
path = src/tools/rust-installer
url = https://github.com/rust-lang/rust-installer.git
@ -64,4 +61,4 @@
path = src/tools/clang
url = https://github.com/rust-lang-nursery/clang.git
branch = rust-release-80-v1

10
config.toml.example
View File

@ -300,12 +300,6 @@
# Adding debuginfo makes them several times larger.
#debuginfo-tools = false
# Whether or not jemalloc is built and enabled
#use-jemalloc = true
# Whether or not jemalloc is built with its debug option set
#debug-jemalloc = false
# Whether or not `panic!`s generate backtraces (RUST_BACKTRACE)
#backtrace = true
@ -441,10 +435,6 @@
# not, you can specify an explicit file name for it.
#llvm-filecheck = "/path/to/FileCheck"
# Path to the custom jemalloc static library to link into the standard library
# by default. This is only used if jemalloc is still enabled above
#jemalloc = "/path/to/jemalloc/libjemalloc_pic.a"
# If this target is for Android, this option will be required to specify where
# the NDK for the target lives. This is used to find the C compiler to link and
# build native code.

5
src/bootstrap/bootstrap.py
View File

@ -715,11 +715,6 @@ class RustBuild(object):
backends = self.get_toml('codegen-backends')
if backends is None or not 'emscripten' in backends:
continue
if module.endswith("jemalloc"):
if self.get_toml('use-jemalloc') == 'false':
continue
if self.get_toml('jemalloc'):
continue
if module.endswith("lld"):
config = self.get_toml('lld')
if config is None or config == 'false':

16
src/bootstrap/compile.rs
View File

@ -158,16 +158,7 @@ pub fn std_cargo(builder: &Builder,
.arg("--manifest-path")
.arg(builder.src.join("src/rustc/compiler_builtins_shim/Cargo.toml"));
} else {
let mut features = builder.std_features();
// When doing a local rebuild we tell cargo that we're stage1 rather than
// stage0. This works fine if the local rust and being-built rust have the
// same view of what the default allocator is, but fails otherwise. Since
// we don't have a way to express an allocator preference yet, work
// around the issue in the case of a local rebuild with jemalloc disabled.
if compiler.stage == 0 && builder.local_rebuild && !builder.config.use_jemalloc {
features.push_str(" force_alloc_system");
}
let features = builder.std_features();
if compiler.stage != 0 && builder.config.sanitizers {
// This variable is used by the sanitizer runtime crates, e.g.
@ -188,11 +179,6 @@ pub fn std_cargo(builder: &Builder,
.arg("--manifest-path")
.arg(builder.src.join("src/libstd/Cargo.toml"));
if let Some(target) = builder.config.target_config.get(&target) {
if let Some(ref jemalloc) = target.jemalloc {
cargo.env("JEMALLOC_OVERRIDE", jemalloc);
}
}
if target.contains("musl") {
if let Some(p) = builder.musl_root(target) {
cargo.env("MUSL_ROOT", p);

14
src/bootstrap/config.rs
View File

@ -123,8 +123,6 @@ pub struct Config {
pub dist_gpg_password_file: Option<PathBuf>,
// libstd features
pub debug_jemalloc: bool,
pub use_jemalloc: bool,
pub backtrace: bool, // support for RUST_BACKTRACE
pub wasm_syscall: bool,
@ -166,7 +164,6 @@ pub struct Target {
pub llvm_config: Option<PathBuf>,
/// Some(path to FileCheck) if one was specified.
pub llvm_filecheck: Option<PathBuf>,
pub jemalloc: Option<PathBuf>,
pub cc: Option<PathBuf>,
pub cxx: Option<PathBuf>,
pub ar: Option<PathBuf>,
@ -302,8 +299,6 @@ struct Rust {
debuginfo_only_std: Option<bool>,
debuginfo_tools: Option<bool>,
experimental_parallel_queries: Option<bool>,
debug_jemalloc: Option<bool>,
use_jemalloc: Option<bool>,
backtrace: Option<bool>,
default_linker: Option<String>,
channel: Option<String>,
@ -337,7 +332,6 @@ struct Rust {
struct TomlTarget {
llvm_config: Option<String>,
llvm_filecheck: Option<String>,
jemalloc: Option<String>,
cc: Option<String>,
cxx: Option<String>,
ar: Option<String>,
@ -363,7 +357,6 @@ impl Config {
config.llvm_enabled = true;
config.llvm_optimize = true;
config.llvm_version_check = true;
config.use_jemalloc = true;
config.backtrace = true;
config.rust_optimize = true;
config.rust_optimize_tests = true;
@ -499,7 +492,6 @@ impl Config {
let mut debuginfo_only_std = None;
let mut debuginfo_tools = None;
let mut debug = None;
let mut debug_jemalloc = None;
let mut debuginfo = None;
let mut debug_assertions = None;
let mut optimize = None;
@ -541,12 +533,10 @@ impl Config {
debuginfo_tools = rust.debuginfo_tools;
optimize = rust.optimize;
ignore_git = rust.ignore_git;
debug_jemalloc = rust.debug_jemalloc;
set(&mut config.rust_optimize_tests, rust.optimize_tests);
set(&mut config.rust_debuginfo_tests, rust.debuginfo_tests);
set(&mut config.codegen_tests, rust.codegen_tests);
set(&mut config.rust_rpath, rust.rpath);
set(&mut config.use_jemalloc, rust.use_jemalloc);
set(&mut config.backtrace, rust.backtrace);
set(&mut config.channel, rust.channel.clone());
set(&mut config.rust_dist_src, rust.dist_src);
@ -596,9 +586,6 @@ impl Config {
if let Some(ref s) = cfg.llvm_filecheck {
target.llvm_filecheck = Some(config.src.join(s));
}
if let Some(ref s) = cfg.jemalloc {
target.jemalloc = Some(config.src.join(s));
}
if let Some(ref s) = cfg.android_ndk {
target.ndk = Some(config.src.join(s));
}
@ -644,7 +631,6 @@ impl Config {
config.rust_debuginfo_tools = debuginfo_tools.unwrap_or(false);
let default = debug == Some(true);
config.debug_jemalloc = debug_jemalloc.unwrap_or(default);
config.rust_debuginfo = debuginfo.unwrap_or(default);
config.rust_debug_assertions = debug_assertions.unwrap_or(default);

5
src/bootstrap/configure.py
View File

@ -82,7 +82,6 @@ o("debuginfo", "rust.debuginfo", "build with debugger metadata")
o("debuginfo-lines", "rust.debuginfo-lines", "build with line number debugger metadata")
o("debuginfo-only-std", "rust.debuginfo-only-std", "build only libstd with debugging information")
o("debuginfo-tools", "rust.debuginfo-tools", "build extended tools with debugging information")
o("debug-jemalloc", "rust.debug-jemalloc", "build jemalloc with --enable-debug --enable-fill")
v("save-toolstates", "rust.save-toolstates", "save build and test status of external tools into this file")
v("prefix", "install.prefix", "set installation prefix")
@ -99,7 +98,6 @@ v("llvm-root", None, "set LLVM root")
v("llvm-config", None, "set path to llvm-config")
v("llvm-filecheck", None, "set path to LLVM's FileCheck utility")
v("python", "build.python", "set path to python")
v("jemalloc-root", None, "set directory where libjemalloc_pic.a is located")
v("android-cross-path", "target.arm-linux-androideabi.android-ndk",
"Android NDK standalone path (deprecated)")
v("i686-linux-android-ndk", "target.i686-linux-android.android-ndk",
@ -148,7 +146,6 @@ v("default-linker", "rust.default-linker", "the default linker")
# Many of these are saved below during the "writing configuration" step
# (others are conditionally saved).
o("manage-submodules", "build.submodules", "let the build manage the git submodules")
o("jemalloc", "rust.use-jemalloc", "build liballoc with jemalloc")
o("full-bootstrap", "build.full-bootstrap", "build three compilers instead of two")
o("extended", "build.extended", "build an extended rust tool set")
@ -330,8 +327,6 @@ for key in known_args:
set('target.{}.llvm-config'.format(build()), value)
elif option.name == 'llvm-filecheck':
set('target.{}.llvm-filecheck'.format(build()), value)
elif option.name == 'jemalloc-root':
set('target.{}.jemalloc'.format(build()), value + '/libjemalloc_pic.a')
elif option.name == 'tools':
set('build.tools', value.split(','))
elif option.name == 'host':

3
src/bootstrap/dist.rs
View File

@ -859,7 +859,6 @@ impl Step for Src {
"src/build_helper",
"src/dlmalloc",
"src/liballoc",
"src/liballoc_jemalloc",
"src/liballoc_system",
"src/libbacktrace",
"src/libcompiler_builtins",
@ -878,14 +877,12 @@ impl Step for Src {
"src/rustc/dlmalloc_shim",
"src/libtest",
"src/libterm",
"src/jemalloc",
"src/libprofiler_builtins",
"src/stdsimd",
"src/libproc_macro",
];
let std_src_dirs_exclude = [
"src/libcompiler_builtins/compiler-rt/test",
"src/jemalloc/test/unit",
];
copy_src_dirs(builder, &std_src_dirs[..], &std_src_dirs_exclude[..], &dst_src);

14
src/bootstrap/lib.rs
View File

@ -516,12 +516,6 @@ impl Build {
fn std_features(&self) -> String {
let mut features = "panic-unwind".to_string();
if self.config.debug_jemalloc {
features.push_str(" debug-jemalloc");
}
if self.config.use_jemalloc {
features.push_str(" jemalloc");
}
if self.config.backtrace {
features.push_str(" backtrace");
}
@ -536,11 +530,7 @@ impl Build {
/// Get the space-separated set of activated features for the compiler.
fn rustc_features(&self) -> String {
let mut features = String::new();
if self.config.use_jemalloc {
features.push_str(" jemalloc");
}
features
String::new()
}
/// Component directory that Cargo will produce output into (e.g.
@ -791,7 +781,7 @@ impl Build {
// If we're compiling on macOS then we add a few unconditional flags
// indicating that we want libc++ (more filled out than libstdc++) and
// we want to compile for 10.7. This way we can ensure that
// LLVM/jemalloc/etc are all properly compiled.
// LLVM/etc are all properly compiled.
if target.contains("apple-darwin") {
base.push("-stdlib=libc++".into());
}

6
src/bootstrap/sanity.rs
View File

@ -152,12 +152,6 @@ pub fn check(build: &mut Build) {
if !build.config.dry_run {
cmd_finder.must_have(build.cxx(*host).unwrap());
}
// The msvc hosts don't use jemalloc, turn it off globally to
// avoid packaging the dummy liballoc_jemalloc on that platform.
if host.contains("msvc") {
build.config.use_jemalloc = false;
}
}
// Externally configured LLVM requires FileCheck to exist

5
src/bootstrap/test.rs
View File

@ -1504,8 +1504,7 @@ impl Step for CrateNotDefault {
type Output = ();
fn should_run(run: ShouldRun) -> ShouldRun {
run.path("src/liballoc_jemalloc")
.path("src/librustc_asan")
run.path("src/librustc_asan")
.path("src/librustc_lsan")
.path("src/librustc_msan")
.path("src/librustc_tsan")
@ -1522,7 +1521,6 @@ impl Step for CrateNotDefault {
target: run.target,
test_kind,
krate: match run.path {
_ if run.path.ends_with("src/liballoc_jemalloc") => "alloc_jemalloc",
_ if run.path.ends_with("src/librustc_asan") => "rustc_asan",
_ if run.path.ends_with("src/librustc_lsan") => "rustc_lsan",
_ if run.path.ends_with("src/librustc_msan") => "rustc_msan",
@ -1561,7 +1559,6 @@ impl Step for Crate {
run = run.krate("test");
for krate in run.builder.in_tree_crates("std") {
if krate.is_local(&run.builder)
&& !krate.name.contains("jemalloc")
&& !(krate.name.starts_with("rustc_") && krate.name.ends_with("san"))
&& krate.name != "dlmalloc"
{

1
src/jemalloc

@ -1 +0,0 @@
Subproject commit 1f5a28755e301ac581e2048011e4e0ff3da482ef

3
src/liballoc/tests/heap.rs
View File

@ -12,9 +12,6 @@ use alloc_system::System;
use std::alloc::{Global, Alloc, Layout};
/// https://github.com/rust-lang/rust/issues/45955
///
/// Note that `#[global_allocator]` is not used,
/// so `liballoc_jemalloc` is linked (on some platforms).
#[test]
fn alloc_system_overaligned_request() {
check_overalign_requests(System)

24
src/liballoc_jemalloc/Cargo.toml
View File

@ -1,24 +0,0 @@
[package]
authors = ["The Rust Project Developers"]
name = "alloc_jemalloc"
version = "0.0.0"
build = "build.rs"
links = "jemalloc"
[lib]
name = "alloc_jemalloc"
path = "lib.rs"
test = false
doc = false
[dependencies]
core = { path = "../libcore" }
libc = { path = "../rustc/libc_shim" }
compiler_builtins = { path = "../rustc/compiler_builtins_shim" }
[build-dependencies]
build_helper = { path = "../build_helper" }
cc = "1.0.1"
[features]
debug = []

151
src/liballoc_jemalloc/build.rs
View File

@ -1,151 +0,0 @@
// Copyright 2015 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.
#![deny(warnings)]
extern crate build_helper;
extern crate cc;
use std::env;
use std::path::PathBuf;
use std::process::Command;
use build_helper::{run, native_lib_boilerplate};
fn main() {
// FIXME: This is a hack to support building targets that don't
// support jemalloc alongside hosts that do. The jemalloc build is
// controlled by a feature of the std crate, and if that feature
// changes between targets, it invalidates the fingerprint of
// std's build script (this is a cargo bug); so we must ensure
// that the feature set used by std is the same across all
// targets, which means we have to build the alloc_jemalloc crate
// for targets like emscripten, even if we don't use it.
let target = env::var("TARGET").expect("TARGET was not set");
let host = env::var("HOST").expect("HOST was not set");
if target.contains("bitrig") || target.contains("emscripten") || target.contains("fuchsia") ||
target.contains("msvc") || target.contains("openbsd") || target.contains("redox") ||
target.contains("rumprun") || target.contains("wasm32") {
println!("cargo:rustc-cfg=dummy_jemalloc");
return;
}
// CloudABI ships with a copy of jemalloc that has been patched to
// work well with sandboxing. Don't attempt to build our own copy,
// as it won't build.
if target.contains("cloudabi") {
return;
}
if target.contains("android") {
println!("cargo:rustc-link-lib=gcc");
} else if !target.contains("windows") && !target.contains("musl") {
println!("cargo:rustc-link-lib=pthread");
}
if let Some(jemalloc) = env::var_os("JEMALLOC_OVERRIDE") {
let jemalloc = PathBuf::from(jemalloc);
println!("cargo:rustc-link-search=native={}",
jemalloc.parent().unwrap().display());
let stem = jemalloc.file_stem().unwrap().to_str().unwrap();
let name = jemalloc.file_name().unwrap().to_str().unwrap();
let kind = if name.ends_with(".a") {
"static"
} else {
"dylib"
};
println!("cargo:rustc-link-lib={}={}", kind, &stem[3..]);
return;
}
let link_name = if target.contains("windows") { "jemalloc" } else { "jemalloc_pic" };
let native = match native_lib_boilerplate("jemalloc", "jemalloc", link_name, "lib") {
Ok(native) => native,
_ => return,
};
let mut cmd = Command::new("sh");
cmd.arg(native.src_dir.join("configure")
.to_str()
.unwrap()
.replace("C:\\", "/c/")
.replace("\\", "/"))
.current_dir(&native.out_dir)
// jemalloc generates Makefile deps using GCC's "-MM" flag. This means
// that GCC will run the preprocessor, and only the preprocessor, over
// jemalloc's source files. If we don't specify CPPFLAGS, then at least
// on ARM that step fails with a "Missing implementation for 32-bit
// atomic operations" error. This is because no "-march" flag will be
// passed to GCC, and then GCC won't define the
// "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4" macro that jemalloc needs to
// select an atomic operation implementation.
.env("CPPFLAGS", env::var_os("CFLAGS").unwrap_or_default());
if target.contains("ios") {
cmd.arg("--disable-tls");
} else if target.contains("android") {
// We force android to have prefixed symbols because apparently
// replacement of the libc allocator doesn't quite work. When this was
// tested (unprefixed symbols), it was found that the `realpath`
// function in libc would allocate with libc malloc (not jemalloc
// malloc), and then the standard library would free with jemalloc free,
// causing a segfault.
//
// If the test suite passes, however, without symbol prefixes then we
// should be good to go!
cmd.arg("--with-jemalloc-prefix=je_");
cmd.arg("--disable-tls");
} else if target.contains("dragonfly") || target.contains("musl") {
cmd.arg("--with-jemalloc-prefix=je_");
}
if cfg!(feature = "debug") {
// Enable jemalloc assertions.
cmd.arg("--enable-debug");
}
cmd.arg(format!("--host={}", build_helper::gnu_target(&target)));
cmd.arg(format!("--build={}", build_helper::gnu_target(&host)));
// for some reason, jemalloc configure doesn't detect this value
// automatically for this target
if target == "sparc64-unknown-linux-gnu" {
cmd.arg("--with-lg-quantum=4");
}
run(&mut cmd);
let mut make = Command::new(build_helper::make(&host));
make.current_dir(&native.out_dir)
.arg("build_lib_static");
// These are intended for mingw32-make which we don't use
if cfg!(windows) {
make.env_remove("MAKEFLAGS").env_remove("MFLAGS");
}
// mingw make seems... buggy? unclear...
if !host.contains("windows") {
make.arg("-j")
.arg(env::var("NUM_JOBS").expect("NUM_JOBS was not set"));
}
run(&mut make);
// The pthread_atfork symbols is used by jemalloc on android but the really
// old android we're building on doesn't have them defined, so just make
// sure the symbols are available.
if target.contains("androideabi") {
println!("cargo:rerun-if-changed=pthread_atfork_dummy.c");
cc::Build::new()
.flag("-fvisibility=hidden")
.file("pthread_atfork_dummy.c")
.compile("pthread_atfork_dummy");
}
}

127
src/liballoc_jemalloc/lib.rs
View File

@ -1,127 +0,0 @@
// Copyright 2015 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.
#![no_std]
#![allow(unused_attributes)]
#![unstable(feature = "alloc_jemalloc",
reason = "implementation detail of std, does not provide any public API",
issue = "0")]
#![feature(core_intrinsics)]
#![feature(libc)]
#![feature(linkage)]
#![feature(nll)]
#![feature(staged_api)]
#![feature(rustc_attrs)]
#![cfg_attr(dummy_jemalloc, allow(dead_code, unused_extern_crates))]
#![cfg_attr(not(dummy_jemalloc), feature(allocator_api))]
#![rustc_alloc_kind = "exe"]
extern crate libc;
#[cfg(not(dummy_jemalloc))]
pub use contents::*;
#[cfg(not(dummy_jemalloc))]
mod contents {
use libc::{c_int, c_void, size_t};
// Note that the symbols here are prefixed by default on macOS and Windows (we
// don't explicitly request it), and on Android and DragonFly we explicitly
// request it as unprefixing cause segfaults (mismatches in allocators).
extern "C" {
#[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios",
target_os = "dragonfly", target_os = "windows", target_env = "musl"),
link_name = "je_mallocx")]
fn mallocx(size: size_t, flags: c_int) -> *mut c_void;
#[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios",
target_os = "dragonfly", target_os = "windows", target_env = "musl"),
link_name = "je_calloc")]
fn calloc(size: size_t, flags: c_int) -> *mut c_void;
#[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios",
target_os = "dragonfly", target_os = "windows", target_env = "musl"),
link_name = "je_rallocx")]
fn rallocx(ptr: *mut c_void, size: size_t, flags: c_int) -> *mut c_void;
#[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios",
target_os = "dragonfly", target_os = "windows", target_env = "musl"),
link_name = "je_sdallocx")]
fn sdallocx(ptr: *mut c_void, size: size_t, flags: c_int);
}
const MALLOCX_ZERO: c_int = 0x40;
// The minimum alignment guaranteed by the architecture. This value is used to
// add fast paths for low alignment values.
#[cfg(all(any(target_arch = "arm",
target_arch = "mips",
target_arch = "powerpc")))]
const MIN_ALIGN: usize = 8;
#[cfg(all(any(target_arch = "x86",
target_arch = "x86_64",
target_arch = "aarch64",
target_arch = "powerpc64",
target_arch = "mips64",
target_arch = "s390x",
target_arch = "sparc64")))]
const MIN_ALIGN: usize = 16;
// MALLOCX_ALIGN(a) macro
fn mallocx_align(a: usize) -> c_int {
a.trailing_zeros() as c_int
}
fn align_to_flags(align: usize, size: usize) -> c_int {
if align <= MIN_ALIGN && align <= size {
0
} else {
mallocx_align(align)
}
}
// for symbol names src/librustc/middle/allocator.rs
// for signatures src/librustc_allocator/lib.rs
// linkage directives are provided as part of the current compiler allocator
// ABI
#[rustc_std_internal_symbol]
pub unsafe extern fn __rde_alloc(size: usize, align: usize) -> *mut u8 {
let flags = align_to_flags(align, size);
let ptr = mallocx(size as size_t, flags) as *mut u8;
ptr
}
#[rustc_std_internal_symbol]
pub unsafe extern fn __rde_dealloc(ptr: *mut u8,
size: usize,
align: usize) {
let flags = align_to_flags(align, size);
sdallocx(ptr as *mut c_void, size, flags);
}
#[rustc_std_internal_symbol]
pub unsafe extern fn __rde_realloc(ptr: *mut u8,
_old_size: usize,
align: usize,
new_size: usize) -> *mut u8 {
let flags = align_to_flags(align, new_size);
let ptr = rallocx(ptr as *mut c_void, new_size, flags) as *mut u8;
ptr
}
#[rustc_std_internal_symbol]
pub unsafe extern fn __rde_alloc_zeroed(size: usize, align: usize) -> *mut u8 {
let ptr = if align <= MIN_ALIGN && align <= size {
calloc(size as size_t, 1) as *mut u8
} else {
let flags = align_to_flags(align, size) | MALLOCX_ZERO;
mallocx(size as size_t, flags) as *mut u8
};
ptr
}
}

16
src/liballoc_jemalloc/pthread_atfork_dummy.c
View File

@ -1,16 +0,0 @@
// Copyright 2017 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.
// See comments in build.rs for why this exists
int pthread_atfork(void* prefork,
void* postfork_parent,
void* postfork_child) {
return 0;
}

3
src/librustc_target/Cargo.toml
View File

@ -13,6 +13,3 @@ bitflags = "1.0"
log = "0.4"
rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
serialize = { path = "../libserialize" }
[features]
jemalloc = []

1
src/librustc_target/spec/apple_base.rs
View File

@ -44,7 +44,6 @@ pub fn opts() -> TargetOptions {
dll_suffix: ".dylib".to_string(),
archive_format: "bsd".to_string(),
pre_link_args: LinkArgs::new(),
exe_allocation_crate: super::maybe_jemalloc(),
has_elf_tls: version >= (10, 7),
abi_return_struct_as_int: true,
emit_debug_gdb_scripts: false,

4
src/librustc_target/spec/apple_ios_base.rs
View File

@ -99,10 +99,6 @@ pub fn opts(arch: Arch) -> Result<TargetOptions, String> {
pre_link_args,
has_elf_tls: false,
eliminate_frame_pointer: false,
// The following line is a workaround for jemalloc 4.5 being broken on
// ios. jemalloc 5.0 is supposed to fix this.
// see https://github.com/rust-lang/rust/issues/45262
exe_allocation_crate: None,
.. super::apple_base::opts()
})
}

1
src/librustc_target/spec/cloudabi_base.rs
View File

@ -38,7 +38,6 @@ pub fn opts() -> TargetOptions {
// dynamic linking.
tls_model: "local-exec".to_string(),
relro_level: RelroLevel::Full,
exe_allocation_crate: super::maybe_jemalloc(),
.. Default::default()
}
}

1
src/librustc_target/spec/dragonfly_base.rs
View File

@ -33,7 +33,6 @@ pub fn opts() -> TargetOptions {
pre_link_args: args,
position_independent_executables: true,
relro_level: RelroLevel::Full,
exe_allocation_crate: super::maybe_jemalloc(),
.. Default::default()
}
}

1
src/librustc_target/spec/freebsd_base.rs
View File

@ -34,7 +34,6 @@ pub fn opts() -> TargetOptions {
position_independent_executables: true,
eliminate_frame_pointer: false, // FIXME 43575
relro_level: RelroLevel::Full,
exe_allocation_crate: super::maybe_jemalloc(),
abi_return_struct_as_int: true,
.. Default::default()
}

1
src/librustc_target/spec/linux_base.rs
View File

@ -36,7 +36,6 @@ pub fn opts() -> TargetOptions {
pre_link_args: args,
position_independent_executables: true,
relro_level: RelroLevel::Full,
exe_allocation_crate: super::maybe_jemalloc(),
has_elf_tls: true,
.. Default::default()
}

8
src/librustc_target/spec/mod.rs
View File

@ -1270,14 +1270,6 @@ impl ToJson for Target {
}
}
fn maybe_jemalloc() -> Option<String> {
if cfg!(feature = "jemalloc") {
Some("alloc_jemalloc".to_string())
} else {
None
}
}
/// Either a target triple string or a path to a JSON file.
#[derive(PartialEq, Clone, Debug, Hash, RustcEncodable, RustcDecodable)]
pub enum TargetTriple {

1
src/librustc_target/spec/solaris_base.rs
View File

@ -18,7 +18,6 @@ pub fn opts() -> TargetOptions {
has_rpath: true,
target_family: Some("unix".to_string()),
is_like_solaris: true,
exe_allocation_crate: super::maybe_jemalloc(),
.. Default::default()
}

4
src/libstd/Cargo.toml
View File

@ -14,7 +14,6 @@ crate-type = ["dylib", "rlib"]
[dependencies]
alloc = { path = "../liballoc" }
alloc_jemalloc = { path = "../liballoc_jemalloc", optional = true }
alloc_system = { path = "../liballoc_system" }
panic_unwind = { path = "../libpanic_unwind", optional = true }
panic_abort = { path = "../libpanic_abort" }
@ -43,9 +42,6 @@ build_helper = { path = "../build_helper" }
[features]
backtrace = []
debug-jemalloc = ["alloc_jemalloc/debug"]
jemalloc = ["alloc_jemalloc"]
force_alloc_system = []
panic-unwind = ["panic_unwind"]
profiler = ["profiler_builtins"]

9
src/libstd/alloc.rs
View File

@ -13,13 +13,10 @@
//! In a given program, the standard library has one “global” memory allocator
//! that is used for example by `Box<T>` and `Vec<T>`.
//!
//! Currently the default global allocator is unspecified.
//! The compiler may link to a version of [jemalloc] on some platforms,
//! but this is not guaranteed.
//! Libraries, however, like `cdylib`s and `staticlib`s are guaranteed
//! to use the [`System`] by default.
//! Currently the default global allocator is unspecified. Libraries, however,
//! like `cdylib`s and `staticlib`s are guaranteed to use the [`System`] by
//! default.
//!
//! [jemalloc]: https://github.com/jemalloc/jemalloc
//! [`System`]: struct.System.html
//!
//! # The `#[global_allocator]` attribute

9
src/libstd/lib.rs
View File

@ -313,14 +313,7 @@
#![default_lib_allocator]
// Always use alloc_system during stage0 since we don't know if the alloc_*
// crate the stage0 compiler will pick by default is enabled (e.g.
// if the user has disabled jemalloc in `./configure`).
// `force_alloc_system` is *only* intended as a workaround for local rebuilds
// with a rustc without jemalloc.
// FIXME(#44236) shouldn't need MSVC logic
#[cfg(all(not(target_env = "msvc"),
any(all(stage0, not(test)), feature = "force_alloc_system")))]
#[cfg(stage0)]
#[global_allocator]
static ALLOC: alloc_system::System = alloc_system::System;

3
src/rustc/Cargo.toml
View File

@ -10,6 +10,3 @@ path = "rustc.rs"
[dependencies]
rustc_target = { path = "../librustc_target" }
rustc_driver = { path = "../librustc_driver" }
[features]
jemalloc = ["rustc_target/jemalloc"]

1
src/tools/tidy/src/cargo.rs
View File

@ -84,7 +84,6 @@ fn verify(tomlfile: &Path, libfile: &Path, bad: &mut bool) {
// This is intentional, this dependency just makes the crate available
// for others later on. Cover cases
let whitelisted = krate == "alloc_jemalloc";
let whitelisted = whitelisted || krate.starts_with("panic");
if toml.contains("name = \"std\"") && whitelisted {
continue

1
src/tools/tidy/src/lib.rs
View File

@ -57,7 +57,6 @@ pub mod libcoretest;
fn filter_dirs(path: &Path) -> bool {
let skip = [
"src/dlmalloc",
"src/jemalloc",
"src/llvm",
"src/llvm-emscripten",
"src/libbacktrace",

2
src/tools/tidy/src/pal.rs
View File

@ -28,7 +28,6 @@
//! - core may not have platform-specific code
//! - libcompiler_builtins may have platform-specific code
//! - liballoc_system may have platform-specific code
//! - liballoc_jemalloc may have platform-specific code
//! - libpanic_abort may have platform-specific code
//! - libpanic_unwind may have platform-specific code
//! - libunwind may have platform-specific code
@ -52,7 +51,6 @@ use std::iter::Iterator;
// Paths that may contain platform-specific code
const EXCEPTION_PATHS: &[&str] = &[
// std crates
"src/liballoc_jemalloc",
"src/liballoc_system",
"src/libcompiler_builtins",
"src/liblibc",