openethereum/parity/hypervisor/service.rs.in

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// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use std::sync::{RwLock,Arc};
use std::ops::*;
use ipc::IpcConfig;
use std::collections::HashMap;
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use ipc::BinaryConvertable;
use std::mem;
use ipc::binary::BinaryConvertError;
use std::collections::VecDeque;
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pub type IpcModuleId = u64;
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/// Blockhain database module id
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pub const BLOCKCHAIN_MODULE_ID: IpcModuleId = 2000;
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/// IPC service that handles module management
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pub struct HypervisorService {
check_list: RwLock<HashMap<IpcModuleId, bool>>,
}
#[derive(Ipc)]
impl HypervisorService {
fn module_ready(&self, module_id: u64) -> bool {
let mut check_list = self.check_list.write().unwrap();
check_list.get_mut(&module_id).map(|mut status| *status = true);
check_list.iter().any(|(_, status)| !status)
}
}
impl HypervisorService {
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/// New service with the default list of modules
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pub fn new() -> Arc<HypervisorService> {
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HypervisorService::with_modules(vec![])
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}
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/// New service with list of modules that will report for being ready
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pub fn with_modules(module_ids: Vec<IpcModuleId>) -> Arc<HypervisorService> {
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let mut check_list = HashMap::new();
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for module_id in module_ids {
check_list.insert(module_id, false);
}
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Arc::new(HypervisorService {
check_list: RwLock::new(check_list),
})
}
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/// Number of modules still being waited for check-in
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pub fn unchecked_count(&self) -> usize {
self.check_list.read().unwrap().iter().filter(|&(_, status)| !status).count()
}
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/// List of all modules within this service
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pub fn module_ids(&self) -> Vec<IpcModuleId> {
self.check_list.read().unwrap().iter().map(|(module_id, _)| module_id).cloned().collect()
}
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}
impl ::ipc::IpcConfig for HypervisorService {}