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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* process_test.cpp - Process test
*/
#include <iostream>
#include <unistd.h>
#include <vector>
#include <libcamera/base/event_dispatcher.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/timer.h>
#include <libcamera/base/utils.h>
#include "libcamera/internal/process.h"
#include "test.h"
using namespace std;
using namespace libcamera;
class ProcessTestChild
{
public:
int run(int status)
{
usleep(50000);
return status;
}
};
class ProcessTest : public Test
{
public:
ProcessTest()
: exitStatus_(Process::NotExited), exitCode_(-1)
{
}
protected:
int run()
{
EventDispatcher *dispatcher = Thread::current()->eventDispatcher();
Timer timeout;
int exitCode = 42;
vector<std::string> args;
args.push_back(to_string(exitCode));
proc_.finished.connect(this, &ProcessTest::procFinished);
/* Test that kill() on an unstarted process is safe. */
proc_.kill();
/* Test starting the process and retrieving the exit code. */
int ret = proc_.start("/proc/self/exe", args);
if (ret) {
cerr << "failed to start process" << endl;
return TestFail;
}
timeout.start(2000);
while (timeout.isRunning() && exitStatus_ == Process::NotExited)
dispatcher->processEvents();
if (exitStatus_ != Process::NormalExit) {
cerr << "process did not exit normally" << endl;
return TestFail;
}
if (exitCode != exitCode_) {
cerr << "exit code should be " << exitCode
<< ", actual is " << exitCode_ << endl;
return TestFail;
}
return TestPass;
}
private:
void procFinished([[maybe_unused]] Process *proc,
enum Process::ExitStatus exitStatus, int exitCode)
{
exitStatus_ = exitStatus;
exitCode_ = exitCode;
}
ProcessManager processManager_;
Process proc_;
enum Process::ExitStatus exitStatus_;
int exitCode_;
};
/*
* Can't use TEST_REGISTER() as single binary needs to act as both
* parent and child processes.
*/
int main(int argc, char **argv)
{
if (argc == 2) {
int status = std::stoi(argv[1]);
ProcessTestChild child;
return child.run(status);
}
return ProcessTest().execute();
}
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