106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
// Copyright (c) 2014-2015, b3log.org
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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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package output
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import (
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"os"
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"sync"
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"github.com/b3log/wide/session"
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)
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// Type of process set.
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type procs map[string][]*os.Process
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// Processse of all users.
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//
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// <sid, []*os.Process>
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var processes = procs{}
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// Exclusive lock.
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var mutex sync.Mutex
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// add adds the specified process to the user process set.
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func (procs *procs) add(wSession *session.WideSession, proc *os.Process) {
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mutex.Lock()
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defer mutex.Unlock()
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sid := wSession.ID
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userProcesses := (*procs)[sid]
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userProcesses = append(userProcesses, proc)
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(*procs)[sid] = userProcesses
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// bind process with wide session
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wSession.SetProcesses(userProcesses)
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logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
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}
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// remove removes the specified process from the user process set.
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func (procs *procs) remove(wSession *session.WideSession, proc *os.Process) {
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mutex.Lock()
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defer mutex.Unlock()
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sid := wSession.ID
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userProcesses := (*procs)[sid]
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var newProcesses []*os.Process
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for i, p := range userProcesses {
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if p.Pid == proc.Pid {
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newProcesses = append(userProcesses[:i], userProcesses[i+1:]...) // remove it
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(*procs)[sid] = newProcesses
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// bind process with wide session
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wSession.SetProcesses(newProcesses)
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logger.Tracef("Session [%s] has [%d] processes", sid, len((*procs)[sid]))
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return
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}
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}
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}
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// kill kills a process specified by the given pid.
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func (procs *procs) kill(wSession *session.WideSession, pid int) {
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mutex.Lock()
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defer mutex.Unlock()
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sid := wSession.ID
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userProcesses := (*procs)[sid]
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for i, p := range userProcesses {
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if p.Pid == pid {
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if err := p.Kill(); nil != err {
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logger.Errorf("Kill a process [pid=%d] of user [%s, %s] failed [error=%v]", pid, wSession.Username, sid, err)
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} else {
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var newProcesses []*os.Process
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newProcesses = append(userProcesses[:i], userProcesses[i+1:]...)
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(*procs)[sid] = newProcesses
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// bind process with wide session
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wSession.SetProcesses(newProcesses)
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logger.Debugf("Killed a process [pid=%d] of user [%s, %s]", pid, wSession.Username, sid)
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}
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return
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}
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}
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}
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