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