c1c0700d91
Backed out changeset f593045cc48f (bug 1543077) Backed out changeset 25449ba8aceb (bug 1543077) Backed out changeset ccc438262e29 (bug 1543077) Backed out changeset 4573c25b1ce0 (bug 1543077) Backed out changeset 1cbaafb9373a (bug 1543077) Backed out changeset 1a0e7ced8e47 (bug 1543077)
359 lines
10 KiB
Rust
359 lines
10 KiB
Rust
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#![cfg_attr(feature = "oom_with_hook", feature(alloc_error_hook))]
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#[cfg(feature="servo")]
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extern crate geckoservo;
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extern crate kvstore;
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extern crate mp4parse_capi;
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extern crate nsstring;
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extern crate nserror;
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extern crate xpcom;
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extern crate netwerk_helper;
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extern crate prefs_parser;
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#[cfg(feature = "gecko_profiler")]
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extern crate profiler_helper;
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extern crate mozurl;
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#[cfg(feature = "quantum_render")]
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extern crate webrender_bindings;
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#[cfg(feature = "cubeb_pulse_rust")]
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extern crate cubeb_pulse;
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extern crate encoding_c;
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extern crate encoding_glue;
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#[cfg(feature = "cubeb-remoting")]
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extern crate audioipc_client;
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#[cfg(feature = "cubeb-remoting")]
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extern crate audioipc_server;
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extern crate env_logger;
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extern crate authenticator;
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extern crate gkrust_utils;
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extern crate log;
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#[cfg(feature = "new_cert_storage")]
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extern crate cert_storage;
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extern crate cosec;
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extern crate rsdparsa_capi;
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#[cfg(feature = "new_xulstore")]
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extern crate xulstore;
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#[cfg(feature = "spidermonkey_rust")]
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extern crate jsrust_shared;
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#[cfg(feature = "bitsdownload")]
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extern crate bitsdownload;
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extern crate storage;
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#[cfg(feature = "moz_places")]
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extern crate bookmark_sync;
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extern crate arrayvec;
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use std::boxed::Box;
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use std::env;
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use std::ffi::{CStr, CString};
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use std::os::raw::c_char;
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use std::os::raw::c_int;
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#[cfg(target_os = "android")]
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use log::Level;
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#[cfg(not(target_os = "android"))]
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use log::Log;
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use std::cmp;
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use std::panic;
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use std::ops::Deref;
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use arrayvec::{Array, ArrayString};
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extern "C" {
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fn gfx_critical_note(msg: *const c_char);
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#[cfg(target_os = "android")]
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fn __android_log_write(prio: c_int, tag: *const c_char, text: *const c_char) -> c_int;
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}
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struct GeckoLogger {
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logger: env_logger::Logger
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}
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impl GeckoLogger {
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fn new() -> GeckoLogger {
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let mut builder = env_logger::Builder::new();
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let default_level = if cfg!(debug_assertions) { "warn" } else { "error" };
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let logger = match env::var("RUST_LOG") {
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Ok(v) => builder.parse(&v).build(),
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_ => builder.parse(default_level).build(),
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};
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GeckoLogger {
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logger
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}
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}
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fn init() -> Result<(), log::SetLoggerError> {
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let gecko_logger = Self::new();
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log::set_max_level(gecko_logger.logger.filter());
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log::set_boxed_logger(Box::new(gecko_logger))
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}
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fn should_log_to_gfx_critical_note(record: &log::Record) -> bool {
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if record.level() == log::Level::Error &&
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record.target().contains("webrender") {
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true
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} else {
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false
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}
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}
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fn maybe_log_to_gfx_critical_note(&self, record: &log::Record) {
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if Self::should_log_to_gfx_critical_note(record) {
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let msg = CString::new(format!("{}", record.args())).unwrap();
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unsafe {
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gfx_critical_note(msg.as_ptr());
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}
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}
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}
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#[cfg(not(target_os = "android"))]
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fn log_out(&self, record: &log::Record) {
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self.logger.log(record);
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}
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#[cfg(target_os = "android")]
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fn log_out(&self, record: &log::Record) {
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let msg = CString::new(format!("{}", record.args())).unwrap();
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let tag = CString::new(record.module_path().unwrap()).unwrap();
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let prio = match record.metadata().level() {
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Level::Error => 6 /* ERROR */,
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Level::Warn => 5 /* WARN */,
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Level::Info => 4 /* INFO */,
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Level::Debug => 3 /* DEBUG */,
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Level::Trace => 2 /* VERBOSE */,
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};
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// Output log directly to android log, since env_logger can output log
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// only to stderr or stdout.
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unsafe {
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__android_log_write(prio, tag.as_ptr(), msg.as_ptr());
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}
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}
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}
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impl log::Log for GeckoLogger {
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fn enabled(&self, metadata: &log::Metadata) -> bool {
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self.logger.enabled(metadata)
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}
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fn log(&self, record: &log::Record) {
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// Forward log to gfxCriticalNote, if the log should be in gfx crash log.
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self.maybe_log_to_gfx_critical_note(record);
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self.log_out(record);
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}
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fn flush(&self) { }
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}
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#[no_mangle]
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pub extern "C" fn GkRust_Init() {
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// Initialize logging.
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let _ = GeckoLogger::init();
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}
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#[no_mangle]
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pub extern "C" fn GkRust_Shutdown() {
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}
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/// Used to implement `nsIDebug2::RustPanic` for testing purposes.
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#[no_mangle]
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pub extern "C" fn intentional_panic(message: *const c_char) {
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panic!("{}", unsafe { CStr::from_ptr(message) }.to_string_lossy());
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}
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extern "C" {
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// We can't use MOZ_Crash directly because it may be weakly linked
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// to libxul, and rust can't handle that.
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fn GeckoCrash(filename: *const c_char, line: c_int, reason: *const c_char) -> !;
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}
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/// Truncate a string at the closest unicode character boundary
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/// ```
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/// assert_eq!(str_truncate_valid("éà", 3), "é");
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/// assert_eq!(str_truncate_valid("éà", 4), "éè");
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/// ```
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fn str_truncate_valid(s: &str, mut mid: usize) -> &str {
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loop {
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if let Some(res) = s.get(..mid) {
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return res;
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}
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mid -= 1;
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}
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}
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/// Similar to ArrayString, but with terminating nul character.
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#[derive(Debug, PartialEq)]
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struct ArrayCString<A: Array<Item = u8>> {
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inner: ArrayString<A>,
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}
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impl<S: AsRef<str>, A: Array<Item = u8>> From<S> for ArrayCString<A> {
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/// Contrary to ArrayString::from, truncates at the closest unicode
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/// character boundary.
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/// ```
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/// assert_eq!(ArrayCString::<[_; 4]>::from("éà"),
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/// ArrayCString::<[_; 4]>::from("é"));
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/// assert_eq!(&*ArrayCString::<[_; 4]>::from("éà"), "é\0");
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/// ```
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fn from(s: S) -> Self {
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let s = s.as_ref();
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let len = cmp::min(s.len(), A::capacity() - 1);
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let mut result = Self {
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inner: ArrayString::from(str_truncate_valid(s, len)).unwrap(),
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};
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result.inner.push('\0');
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result
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}
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}
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impl<A: Array<Item = u8>> Deref for ArrayCString<A> {
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type Target = str;
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fn deref(&self) -> &str {
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self.inner.as_str()
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}
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}
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fn panic_hook(info: &panic::PanicInfo) {
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// Try to handle &str/String payloads, which should handle 99% of cases.
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let payload = info.payload();
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let message = if let Some(s) = payload.downcast_ref::<&str>() {
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s
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} else if let Some(s) = payload.downcast_ref::<String>() {
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s.as_str()
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} else {
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// Not the most helpful thing, but seems unlikely to happen
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// in practice.
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"Unhandled rust panic payload!"
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};
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let (filename, line) = if let Some(loc) = info.location() {
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(loc.file(), loc.line())
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} else {
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("unknown.rs", 0)
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};
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// Copy the message and filename to the stack in order to safely add
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// a terminating nul character (since rust strings don't come with one
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// and GeckoCrash wants one).
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let message = ArrayCString::<[_; 512]>::from(message);
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let filename = ArrayCString::<[_; 512]>::from(filename);
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unsafe {
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GeckoCrash(filename.as_ptr() as *const c_char, line as c_int,
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message.as_ptr() as *const c_char);
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}
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}
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/// Configure a panic hook to redirect rust panics to Gecko's MOZ_Crash.
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#[no_mangle]
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pub extern "C" fn install_rust_panic_hook() {
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panic::set_hook(Box::new(panic_hook));
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}
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#[cfg(feature = "oom_with_hook")]
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mod oom_hook {
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use std::alloc::{Layout, set_alloc_error_hook};
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extern "C" {
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fn GeckoHandleOOM(size: usize) -> !;
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}
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pub fn hook(layout: Layout) {
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unsafe {
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GeckoHandleOOM(layout.size());
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}
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}
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pub fn install() {
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set_alloc_error_hook(hook);
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}
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}
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#[no_mangle]
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pub extern "C" fn install_rust_oom_hook() {
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#[cfg(feature = "oom_with_hook")]
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oom_hook::install();
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}
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#[cfg(feature = "moz_memory")]
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mod moz_memory {
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use std::alloc::{GlobalAlloc, Layout};
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use std::os::raw::c_void;
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extern "C" {
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fn malloc(size: usize) -> *mut c_void;
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fn free(ptr: *mut c_void);
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fn calloc(nmemb: usize, size: usize) -> *mut c_void;
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fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void;
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#[cfg(windows)]
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fn _aligned_malloc(size: usize, align: usize) -> *mut c_void;
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#[cfg(not(windows))]
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fn memalign(align: usize, size: usize) -> *mut c_void;
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}
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#[cfg(windows)]
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unsafe fn memalign(align: usize, size: usize) -> *mut c_void {
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_aligned_malloc(size, align)
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}
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pub struct GeckoAlloc;
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#[inline(always)]
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fn need_memalign(layout: Layout) -> bool {
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// mozjemalloc guarantees a minimum alignment of 16 for all sizes, except
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// for size classes below 16 (4 and 8).
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layout.align() > layout.size() || layout.align() > 16
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}
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unsafe impl GlobalAlloc for GeckoAlloc {
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unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
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if need_memalign(layout) {
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memalign(layout.align(), layout.size()) as *mut u8
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} else {
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malloc(layout.size()) as *mut u8
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}
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}
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unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
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free(ptr as *mut c_void)
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}
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unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {
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if need_memalign(layout) {
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let ptr = self.alloc(layout);
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if !ptr.is_null() {
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std::ptr::write_bytes(ptr, 0, layout.size());
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}
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ptr
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} else {
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calloc(1, layout.size()) as *mut u8
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}
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}
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unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
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let new_layout = Layout::from_size_align_unchecked(new_size, layout.align());
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if need_memalign(new_layout) {
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let new_ptr = self.alloc(new_layout);
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if !new_ptr.is_null() {
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let size = std::cmp::min(layout.size(), new_size);
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std::ptr::copy_nonoverlapping(ptr, new_ptr, size);
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self.dealloc(ptr, layout);
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}
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new_ptr
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} else {
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realloc(ptr as *mut c_void, new_size) as *mut u8
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}
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}
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}
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}
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#[cfg(feature = "moz_memory")]
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#[global_allocator]
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static A: moz_memory::GeckoAlloc = moz_memory::GeckoAlloc;
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