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//
// Copyright (C) 2021 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 trace provider trait and helper functions.
use anyhow::{anyhow, Result};
use chrono::Utc;
use std::path::{Path, PathBuf};
use std::sync::{Arc, Mutex};
use std::time::Duration;
use crate::simpleperf_etm_trace_provider::SimpleperfEtmTraceProvider;
#[cfg(feature = "test")]
use crate::logging_trace_provider::LoggingTraceProvider;
pub trait TraceProvider {
fn get_name(&self) -> &'static str;
fn is_ready(&self) -> bool;
fn trace(&self, trace_dir: &Path, tag: &str, sampling_period: &Duration);
fn process(&self, trace_dir: &Path, profile_dir: &Path, binary_filter: &str) -> Result<()>;
}
pub fn get_trace_provider() -> Result<Arc<Mutex<dyn TraceProvider + Send>>> {
if SimpleperfEtmTraceProvider::supported() {
log::info!("simpleperf_etm trace provider registered.");
return Ok(Arc::new(Mutex::new(SimpleperfEtmTraceProvider {})));
}
#[cfg(feature = "test")]
if LoggingTraceProvider::supported() {
log::info!("logging trace provider registered.");
return Ok(Arc::new(Mutex::new(LoggingTraceProvider {})));
}
Err(anyhow!("No trace provider found for this device."))
}
pub fn get_path(dir: &Path, tag: &str, ext: &str) -> Box<Path> {
let filename = format!("{}_{}", Utc::now().format("%Y%m%d-%H%M%S"), tag);
let mut trace_file = PathBuf::from(dir);
trace_file.push(filename);
trace_file.set_extension(ext);
trace_file.into_boxed_path()
}
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