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/* 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/. */
use heartbeats_simple::HeartbeatPow as Heartbeat;
use heartbeats_simple::HeartbeatPowContext as HeartbeatContext;
use profile_traits::time::ProfilerCategory;
use std::collections::HashMap;
use std::env::var_os;
use std::error::Error;
use std::fs::File;
use std::mem;
use std::path::Path;
use util::opts;
static mut HBS: Option<*mut HashMap<ProfilerCategory, Heartbeat>> = None;
/// Initialize heartbeats
pub fn init() {
let mut hbs: HashMap<ProfilerCategory, Heartbeat> = HashMap::new();
maybe_create_heartbeat(&mut hbs, ProfilerCategory::Compositing);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutPerform);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutStyleRecalc);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutTextShaping);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutRestyleDamagePropagation);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutNonIncrementalReset);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutSelectorMatch);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutTreeBuilder);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutDamagePropagate);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutGeneratedContent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutMain);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutParallelWarmup);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::LayoutDispListBuild);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::PaintingPerTile);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::PaintingPrepBuff);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::Painting);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ImageDecoding);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ImageSaving);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptAttachLayout);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptConstellationMsg);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptDevtoolsMsg);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptDocumentEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptDomEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptFileRead);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptImageCacheMsg);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptInputEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptNetworkEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptResize);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptUpdateReplacedElement);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptSetViewport);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptWebSocketEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ScriptWorkerEvent);
maybe_create_heartbeat(&mut hbs, ProfilerCategory::ApplicationHeartbeat);
unsafe {
HBS = Some(mem::transmute(Box::new(hbs)));
}
}
/// Log regmaining buffer data and cleanup heartbeats
pub fn cleanup() {
unsafe {
if let Some(hbs) = HBS {
let mut h: Box<HashMap<ProfilerCategory, Heartbeat>> = mem::transmute(hbs);
for (_, mut v) in h.iter_mut() {
// log any remaining heartbeat records before dropping
log_heartbeat_records(v);
}
h.clear();
}
HBS = None;
}
}
/// Check if a heartbeat exists for the given category
pub fn is_heartbeat_enabled(category: &ProfilerCategory) -> bool {
unsafe {
HBS.map_or(false, |m| (*m).contains_key(category))
}
}
/// Issue a heartbeat (if one exists) for the given category
pub fn maybe_heartbeat(category: &ProfilerCategory,
start_time: u64,
end_time: u64,
start_energy: u64,
end_energy: u64) {
unsafe {
if let Some(map) = HBS {
if let Some(mut h) = (*map).get_mut(category) {
(*h).heartbeat(0, 1, start_time, end_time, start_energy, end_energy);
}
}
}
}
// TODO(cimes): Android doesn't really do environment variables. Need a better way to configure dynamically.
fn is_create_heartbeat(category: &ProfilerCategory) -> bool {
opts::get().profile_heartbeats || var_os(format!("SERVO_HEARTBEAT_ENABLE_{:?}", category)).is_some()
}
fn open_heartbeat_log<P: AsRef<Path>>(name: P) -> Option<File> {
match File::create(name) {
Ok(f) => Some(f),
Err(e) => {
warn!("Failed to open heartbeat log: {}", Error::description(&e));
None
},
}
}
#[cfg(target_os = "android")]
fn get_heartbeat_log(category: &ProfilerCategory) -> Option<File> {
open_heartbeat_log(format!("/sdcard/servo/heartbeat-{:?}.log", category))
}
#[cfg(not(target_os = "android"))]
fn get_heartbeat_log(category: &ProfilerCategory) -> Option<File> {
var_os(format!("SERVO_HEARTBEAT_LOG_{:?}", category)).and_then(|name| open_heartbeat_log(&name))
}
fn get_heartbeat_window_size(category: &ProfilerCategory) -> usize {
const WINDOW_SIZE_DEFAULT: usize = 1;
match var_os(format!("SERVO_HEARTBEAT_WINDOW_{:?}", category)) {
Some(w) => match w.into_string() {
Ok(s) => s.parse::<usize>().unwrap_or(WINDOW_SIZE_DEFAULT),
_ => WINDOW_SIZE_DEFAULT,
},
None => WINDOW_SIZE_DEFAULT,
}
}
/// Possibly create a heartbeat
fn maybe_create_heartbeat(hbs: &mut HashMap<ProfilerCategory, Heartbeat>,
category: ProfilerCategory) {
if is_create_heartbeat(&category) {
// get optional log file
let logfile: Option<File> = get_heartbeat_log(&category);
// window size
let window_size: usize = get_heartbeat_window_size(&category);
// create the heartbeat
match Heartbeat::new(window_size, Some(heartbeat_window_callback), logfile) {
Ok(hb) => {
debug!("Created heartbeat for {:?}", category);
hbs.insert(category, hb);
},
Err(e) => warn!("Failed to create heartbeat for {:?}: {}", category, e),
}
};
}
/// Log heartbeat records up to the buffer index
fn log_heartbeat_records(hb: &mut Heartbeat) {
match hb.log_to_buffer_index() {
Ok(_) => (),
Err(e) => warn!("Failed to write heartbeat log: {}", Error::description(&e)),
}
}
/// Callback function used to log the window buffer.
/// When this is called from native C, the heartbeat is safely locked
extern fn heartbeat_window_callback(hb: *const HeartbeatContext) {
unsafe {
if let Some(map) = HBS {
for (_, v) in (*map).iter_mut() {
if &v.hb as *const HeartbeatContext == hb {
log_heartbeat_records(v);
}
}
}
}
}
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