test/object-invoke.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * ipu3_pipeline_test.cpp - Intel IPU3 pipeline test
 */

#include <iostream>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <libcamera/camera.h>
#include <libcamera/camera_manager.h>

#include "libcamera/internal/device_enumerator.h"
#include "libcamera/internal/media_device.h"
#include "libcamera/internal/media_object.h"

#include "test.h"

using namespace std;
using namespace libcamera;

/*
 * Verify that the Intel IPU3 pipeline handler gets matched and cameras
 * are enumerated correctly.
 *
 * The test is supposed to be run on an IPU3 platform, otherwise it gets
 * skipped.
 *
 * The test lists all cameras registered in the system, if any camera is
 * available at all.
 */
class IPU3PipelineTest : public Test
{
protected:
	int init();
	int run();
	void cleanup();

privat/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * object-invoke.cpp - Cross-thread Object method invocation test
 */

#include <iostream>
#include <thread>

#include <libcamera/event_dispatcher.h>
#include <libcamera/object.h>

#include "libcamera/internal/thread.h"

#include "test.h"

using namespace std;
using namespace libcamera;

class InvokedObject : public Object
{
public:
	enum Status {
		NoCall,
		InvalidThread,
		CallReceived,
	};

	InvokedObject()
		: status_(NoCall)
	{
	}

	Status status() const { return status_; }
	int value() const { return value_; }
	void reset()
	{
		status_ = NoCall;
		value_ = 0;
	}

	void method(int value)
	{
		if (Thread::current() != thread())
			status_ = InvalidThread;
		else
			status_ = CallReceived;

		value_ = value;
	}

	void methodWithReference([[maybe_unused]] const int &value)
	{
	}

	int methodWithReturn()
	{
		return 42;
	}

private:
	Status status_;
	int value_;
};

class ObjectInvokeTest : public Test
{
protected:
	int run()
	{
		EventDispatcher *dispatcher = Thread::current()->eventDispatcher();

		/*
		 * Test that queued method invocation in the same thread goes
		 * through the event dispatcher.
		 */
		object_.invokeMethod(&InvokedObject::method,
				     ConnectionTypeQueued, 42);

		if (object_.status() != InvokedObject::NoCall) {
			cerr << "Method not invoked asynchronously" << endl;
			return TestFail;
		}

		dispatcher->processEvents();

		switch (object_.status()) {
		case InvokedObject::NoCall:
			cout << "Method not invoked for main thread" << endl;
			return TestFail;
		case InvokedObject::InvalidThread:
			cout << "Method invoked in incorrect thread for main thread" << endl;
			return TestFail;
		default:
			break;
		}

		if (object_.value() != 42) {
			cout << "Method invoked with incorrect value for main thread" << endl;
			return TestFail;
		}

		/*
		 * Test that blocking invocation is delivered directly when the
		 * caller and callee live in the same thread.
		 */
		object_.reset();

		object_.invokeMethod(&InvokedObject::method,
				     ConnectionTypeBlocking, 42);

		switch (object_.status()) {
		case InvokedObject::NoCall:
			cout << "Method not invoked for main thread (blocking)" << endl;
			return TestFail;
		case InvokedObject::InvalidThread:
			cout << "Method invoked in incorrect thread for main thread (blocking)" << endl;
			return TestFail;
		default:
			break;
		}

		/*
		 * Move the object to a thread and verify that auto method
		 * invocation is delivered in the correct thread.
		 */
		object_.reset();
		object_.moveToThread(&thread_);

		thread_.start();

		object_.invokeMethod(&InvokedObject::method,
				     ConnectionTypeBlocking, 42);

		switch (object_.status()) {
		case InvokedObject::NoCall:
			cout << "Method not invoked for custom thread" << endl;
			return TestFail;
		case InvokedObject::InvalidThread:
			cout << "Method invoked in incorrect thread for custom thread" << endl;
			return TestFail;
		default:
			break;
		}

		if (object_.value() != 42) {
			cout << "Method invoked with incorrect value for custom thread" << endl;
			return TestFail;
		}

		/* Test that direct method invocation bypasses threads. */
		object_.reset();
		object_.invokeMethod(&InvokedObject::method,
				     ConnectionTypeDirect, 42);

		switch (object_.status()) {
		case InvokedObject::NoCall:
			cout << "Method not invoked for custom thread" << endl;
			return TestFail;
		case InvokedObject::CallReceived:
			cout << "Method invoked in incorrect thread for direct call" << endl;
			return TestFail;
		default:
			break;
		}

		if (object_.value() != 42) {
			cout << "Method invoked with incorrect value for direct call" << endl;
			return TestFail;
		}

		/*
		 * Test invoking a method that takes reference arguments. This
		 * targets compilation, there's no need to check runtime
		 * results.
		 */
		object_.invokeMethod(&InvokedObject::methodWithReference,
				     ConnectionTypeBlocking, 42);

		/* Test invoking a method that returns a value. */
		int ret = object_.invokeMethod(&InvokedObject::methodWithReturn,
					       ConnectionTypeBlocking);
		if (ret != 42) {
			cout << "Method invoked return incorrect value (" << ret
			     << ")" << endl;
			return TestFail;
		}

		return TestPass;
	}

	void cleanup()
	{
		thread_.exit(0);
		thread_.wait();
	}

private:
	Thread thread_;
	InvokedObject object_;
};

TEST_REGISTER(ObjectInvokeTest)