Mypal68/toolkit/library/rust/shared/lib.rs
2024-02-16 13:22:56 +02:00

284 lines
7.9 KiB
Rust

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#![cfg_attr(feature = "oom_with_hook", feature(alloc_error_hook))]
extern crate geckoservo;
#[cfg(feature = "cubeb-remoting")]
extern crate audioipc_client;
#[cfg(feature = "cubeb-remoting")]
extern crate audioipc_server;
extern crate authenticator;
#[cfg(feature = "bitsdownload")]
extern crate bitsdownload;
#[cfg(feature = "moz_places")]
extern crate bookmark_sync;
#[cfg(feature = "new_cert_storage")]
extern crate cert_storage;
extern crate cosec;
#[cfg(feature = "cubeb_pulse_rust")]
extern crate cubeb_pulse;
extern crate encoding_glue;
extern crate env_logger;
extern crate gkrust_utils;
extern crate jsrust_shared;
extern crate kvstore;
extern crate log;
extern crate mapped_hyph;
extern crate mozurl;
extern crate mp4parse_capi;
extern crate netwerk_helper;
extern crate nserror;
extern crate nsstring;
extern crate prefs_parser;
#[cfg(feature = "gecko_profiler")]
extern crate profiler_helper;
extern crate rsdparsa_capi;
extern crate static_prefs;
extern crate storage;
#[cfg(feature = "quantum_render")]
extern crate webrender_bindings;
extern crate xpcom;
#[cfg(feature = "new_xulstore")]
extern crate xulstore;
#[cfg(feature = "webrtc")]
extern crate mdns_service;
extern crate unic_langid;
extern crate unic_langid_ffi;
extern crate fluent_langneg;
extern crate fluent_langneg_ffi;
#[cfg(target_os = "android")]
use log::Level;
#[cfg(not(target_os = "android"))]
use log::Log;
use std::boxed::Box;
use std::env;
use std::ffi::{CStr, CString};
use std::os::raw::c_char;
#[cfg(target_os = "android")]
use std::os::raw::c_int;
extern "C" {
#[cfg(feature = "quantum_render")]
fn gfx_critical_note(msg: *const c_char);
#[cfg(target_os = "android")]
fn __android_log_write(prio: c_int, tag: *const c_char, text: *const c_char) -> c_int;
}
struct GeckoLogger {
logger: env_logger::Logger,
}
impl GeckoLogger {
fn new() -> GeckoLogger {
let mut builder = env_logger::Builder::new();
let default_level = if cfg!(debug_assertions) {
"warn"
} else {
"error"
};
let logger = match env::var("RUST_LOG") {
Ok(v) => builder.parse_filters(&v).build(),
_ => builder.parse_filters(default_level).build(),
};
GeckoLogger { logger }
}
fn init() -> Result<(), log::SetLoggerError> {
let gecko_logger = Self::new();
log::set_max_level(gecko_logger.logger.filter());
log::set_boxed_logger(Box::new(gecko_logger))
}
#[cfg(feature = "quantum_render")]
fn should_log_to_gfx_critical_note(record: &log::Record) -> bool {
if record.level() == log::Level::Error && record.target().contains("webrender") {
true
} else {
false
}
}
#[cfg(feature = "quantum_render")]
fn maybe_log_to_gfx_critical_note(&self, record: &log::Record) {
if Self::should_log_to_gfx_critical_note(record) {
let msg = CString::new(format!("{}", record.args())).unwrap();
unsafe {
gfx_critical_note(msg.as_ptr());
}
}
}
#[cfg(not(target_os = "android"))]
fn log_out(&self, record: &log::Record) {
self.logger.log(record);
}
#[cfg(target_os = "android")]
fn log_out(&self, record: &log::Record) {
let msg = CString::new(format!("{}", record.args())).unwrap();
let tag = CString::new(record.module_path().unwrap()).unwrap();
let prio = match record.metadata().level() {
Level::Error => 6, /* ERROR */
Level::Warn => 5, /* WARN */
Level::Info => 4, /* INFO */
Level::Debug => 3, /* DEBUG */
Level::Trace => 2, /* VERBOSE */
};
// Output log directly to android log, since env_logger can output log
// only to stderr or stdout.
unsafe {
__android_log_write(prio, tag.as_ptr(), msg.as_ptr());
}
}
}
impl log::Log for GeckoLogger {
fn enabled(&self, metadata: &log::Metadata) -> bool {
self.logger.enabled(metadata)
}
#[cfg(feature = "quantum_render")]
fn log(&self, record: &log::Record) {
// Forward log to gfxCriticalNote, if the log should be in gfx crash log.
self.maybe_log_to_gfx_critical_note(record);
self.log_out(record);
}
#[cfg(not(feature = "quantum_render"))]
fn log(&self, record: &log::Record) {
self.log_out(record);
}
fn flush(&self) {}
}
#[no_mangle]
pub extern "C" fn GkRust_Init() {
// Initialize logging.
let _ = GeckoLogger::init();
}
#[no_mangle]
pub extern "C" fn GkRust_Shutdown() {}
/// Used to implement `nsIDebug2::RustPanic` for testing purposes.
#[no_mangle]
pub extern "C" fn intentional_panic(message: *const c_char) {
panic!("{}", unsafe { CStr::from_ptr(message) }.to_string_lossy());
}
#[cfg(feature = "oom_with_hook")]
mod oom_hook {
use std::alloc::{set_alloc_error_hook, Layout};
extern "C" {
fn GeckoHandleOOM(size: usize) -> !;
}
pub fn hook(layout: Layout) {
unsafe {
GeckoHandleOOM(layout.size());
}
}
pub fn install() {
set_alloc_error_hook(hook);
}
}
#[no_mangle]
pub extern "C" fn install_rust_oom_hook() {
#[cfg(feature = "oom_with_hook")]
oom_hook::install();
}
#[cfg(feature = "moz_memory")]
mod moz_memory {
use std::alloc::{GlobalAlloc, Layout};
use std::os::raw::c_void;
extern "C" {
fn malloc(size: usize) -> *mut c_void;
fn free(ptr: *mut c_void);
fn calloc(nmemb: usize, size: usize) -> *mut c_void;
fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void;
#[cfg(windows)]
fn _aligned_malloc(size: usize, align: usize) -> *mut c_void;
#[cfg(not(windows))]
fn memalign(align: usize, size: usize) -> *mut c_void;
}
#[cfg(windows)]
unsafe fn memalign(align: usize, size: usize) -> *mut c_void {
_aligned_malloc(size, align)
}
pub struct GeckoAlloc;
#[inline(always)]
fn need_memalign(layout: Layout) -> bool {
// mozjemalloc guarantees a minimum alignment of 16 for all sizes, except
// for size classes below 16 (4 and 8).
layout.align() > layout.size() || layout.align() > 16
}
unsafe impl GlobalAlloc for GeckoAlloc {
unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
if need_memalign(layout) {
memalign(layout.align(), layout.size()) as *mut u8
} else {
malloc(layout.size()) as *mut u8
}
}
unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
free(ptr as *mut c_void)
}
unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
if need_memalign(layout) {
let ptr = self.alloc(layout);
if !ptr.is_null() {
std::ptr::write_bytes(ptr, 0, layout.size());
}
ptr
} else {
calloc(1, layout.size()) as *mut u8
}
}
unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
let new_layout = Layout::from_size_align_unchecked(new_size, layout.align());
if need_memalign(new_layout) {
let new_ptr = self.alloc(new_layout);
if !new_ptr.is_null() {
let size = std::cmp::min(layout.size(), new_size);
std::ptr::copy_nonoverlapping(ptr, new_ptr, size);
self.dealloc(ptr, layout);
}
new_ptr
} else {
realloc(ptr as *mut c_void, new_size) as *mut u8
}
}
}
}
#[cfg(feature = "moz_memory")]
#[global_allocator]
static A: moz_memory::GeckoAlloc = moz_memory::GeckoAlloc;