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//
// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//! ProfCollect Binder client interface.
mod config;
mod report;
mod scheduler;
mod service;
mod simpleperf_etm_trace_provider;
mod trace_provider;
#[cfg(feature = "test")]
mod logging_trace_provider;
use anyhow::{Context, Result};
use profcollectd_aidl_interface::aidl::com::android::server::profcollect::IProfCollectd::{
self, BnProfCollectd,
};
use profcollectd_aidl_interface::aidl::com::android::server::profcollect::IProviderStatusCallback::{IProviderStatusCallback, BnProviderStatusCallback};
use profcollectd_aidl_interface::binder::{self, BinderFeatures};
use service::{err_to_binder_status, ProfcollectdBinderService};
use std::time::{Duration, Instant};
const PROFCOLLECTD_SERVICE_NAME: &str = "profcollectd";
struct ProviderStatusCallback {
service_start_time: Instant,
}
impl binder::Interface for ProviderStatusCallback {}
impl IProviderStatusCallback for ProviderStatusCallback {
fn onProviderReady(&self) -> binder::Result<()> {
// If we have waited too long for the provider to be ready, then we have passed
// boot phase, and no need to collect boot profile.
// TODO: should we check boottime instead?
const TIMEOUT_TO_COLLECT_BOOT_PROFILE: Duration = Duration::from_secs(3);
let elapsed = Instant::now().duration_since(self.service_start_time);
if elapsed < TIMEOUT_TO_COLLECT_BOOT_PROFILE {
trace_once("boot").map_err(err_to_binder_status)?;
}
schedule().map_err(err_to_binder_status)?;
Ok(())
}
}
/// Initialise profcollectd service.
/// * `schedule_now` - Immediately schedule collection after service is initialised.
pub fn init_service(schedule_now: bool) -> Result<()> {
binder::ProcessState::start_thread_pool();
let profcollect_binder_service = ProfcollectdBinderService::new()?;
binder::add_service(
PROFCOLLECTD_SERVICE_NAME,
BnProfCollectd::new_binder(profcollect_binder_service, BinderFeatures::default())
.as_binder(),
)
.context("Failed to register service.")?;
if schedule_now {
let cb = BnProviderStatusCallback::new_binder(
ProviderStatusCallback { service_start_time: Instant::now() },
BinderFeatures::default(),
);
get_profcollectd_service()?.registerProviderStatusCallback(&cb)?;
}
binder::ProcessState::join_thread_pool();
Ok(())
}
fn get_profcollectd_service() -> Result<binder::Strong<dyn IProfCollectd::IProfCollectd>> {
binder::get_interface(PROFCOLLECTD_SERVICE_NAME)
.context("Failed to get profcollectd binder service, is profcollectd running?")
}
/// Schedule periodic profile collection.
pub fn schedule() -> Result<()> {
get_profcollectd_service()?.schedule()?;
Ok(())
}
/// Terminate periodic profile collection.
pub fn terminate() -> Result<()> {
get_profcollectd_service()?.terminate()?;
Ok(())
}
/// Immediately schedule a one-off trace.
pub fn trace_once(tag: &str) -> Result<()> {
get_profcollectd_service()?.trace_once(tag)?;
Ok(())
}
/// Process traces.
pub fn process() -> Result<()> {
get_profcollectd_service()?.process()?;
Ok(())
}
/// Process traces and report profile.
pub fn report() -> Result<String> {
Ok(get_profcollectd_service()?.report()?)
}
/// Clear all local data.
pub fn reset() -> Result<()> {
config::clear_data()?;
Ok(())
}
/// Inits logging for Android
pub fn init_logging() {
let min_log_level = if cfg!(feature = "test") { log::Level::Info } else { log::Level::Error };
android_logger::init_once(
android_logger::Config::default().with_tag("profcollectd").with_min_level(min_log_level),
);
}
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