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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/process/process.h"
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/types.h>
#include "base/logging.h"
#include "base/process/kill.h"
namespace base {
Process::Process(ProcessHandle handle) : process_(handle) {
CHECK_NE(handle, GetCurrentProcessHandle());
}
Process::Process(RValue other)
: process_(other.object->process_) {
other.object->Close();
}
Process& Process::operator=(RValue other) {
if (this != other.object) {
process_ = other.object->process_;
other.object->Close();
}
return *this;
}
// static
Process Process::Current() {
Process process;
process.process_ = GetCurrentProcessHandle();
return process.Pass();
}
// static
Process Process::DeprecatedGetProcessFromHandle(ProcessHandle handle) {
DCHECK_NE(handle, GetCurrentProcessHandle());
return Process(handle);
}
#if !defined(OS_LINUX)
// static
bool Process::CanBackgroundProcesses() {
return false;
}
#endif // !defined(OS_LINUX)
bool Process::IsValid() const {
return process_ != kNullProcessHandle;
}
ProcessHandle Process::Handle() const {
return process_;
}
Process Process::Duplicate() const {
if (is_current())
return Current();
return Process(process_);
}
ProcessId Process::pid() const {
DCHECK(IsValid());
return GetProcId(process_);
}
bool Process::is_current() const {
return process_ == GetCurrentProcessHandle();
}
void Process::Close() {
process_ = kNullProcessHandle;
// if the process wasn't terminated (so we waited) or the state
// wasn't already collected w/ a wait from process_utils, we're gonna
// end up w/ a zombie when it does finally exit.
}
void Process::Terminate(int result_code) {
// result_code isn't supportable.
DCHECK(IsValid());
// We don't wait here. It's the responsibility of other code to reap the
// child.
KillProcess(process_, result_code, false);
}
bool Process::WaitForExit(int* exit_code) {
// TODO(rvargas) crbug.com/417532: Remove this constant.
const int kNoTimeout = -1;
return WaitForExitWithTimeout(TimeDelta::FromMilliseconds(kNoTimeout),
exit_code);
}
bool Process::WaitForExitWithTimeout(TimeDelta timeout, int* exit_code) {
// TODO(rvargas) crbug.com/417532: Move the implementation here.
return base::WaitForExitCodeWithTimeout(Handle(), exit_code, timeout);
}
#if !defined(OS_LINUX)
bool Process::IsProcessBackgrounded() const {
// See SetProcessBackgrounded().
DCHECK(IsValid());
return false;
}
bool Process::SetProcessBackgrounded(bool value) {
// POSIX only allows lowering the priority of a process, so if we
// were to lower it we wouldn't be able to raise it back to its initial
// priority.
DCHECK(IsValid());
return false;
}
#endif // !defined(OS_LINUX)
int Process::GetPriority() const {
DCHECK(IsValid());
return getpriority(PRIO_PROCESS, process_);
}
} // namspace base
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