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
133
134
135
136
137
138
139
140
141
142
143
144
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "outputgenerator.h"
#include <QAbstractSocket>
#include <QCoreApplication>
#include <QDebug>
#include <QIODevice>
#include <QRandomGenerator>
#include <QStringList>
#include <QTextStream>
// Yes, this is ugly. But please don't introduce a libUtils dependency
// just to get rid of a single function.
#ifdef Q_OS_WIN
#include <windows.h>
void doSleep(int msec) { ::Sleep(msec); }
#else
#include <time.h>
#include <unistd.h>
void doSleep(int msec)
{
struct timespec ts = {msec / 1000, (msec % 1000) * 1000000};
::nanosleep(&ts, nullptr);
}
#endif
using namespace Valgrind::Fake;
OutputGenerator::OutputGenerator(QAbstractSocket *output, QIODevice *input) :
m_output(output),
m_input(input),
m_finished(false),
m_crash(false),
m_garbage(false),
m_wait(0)
{
Q_ASSERT(input->isOpen());
Q_ASSERT(input->isReadable());
m_timer.setSingleShot(true);
m_timer.start();
connect(&m_timer, &QTimer::timeout,
this, &OutputGenerator::writeOutput);
}
void OutputGenerator::setCrashRandomly(bool enable)
{
m_crash = enable;
}
void OutputGenerator::setOutputGarbage(bool enable)
{
m_garbage = enable;
}
void OutputGenerator::setWait(uint seconds)
{
m_wait = seconds;
}
#include <iostream>
static bool blockingWrite(QIODevice *dev, const QByteArray &ba)
{
const qint64 toWrite = ba.size();
qint64 written = 0;
while (written < ba.size()) {
const qint64 n = dev->write(ba.constData() + written, toWrite - written);
if (n < 0)
return false;
written += n;
}
return true;
}
void OutputGenerator::produceRuntimeError()
{
if (m_crash) {
std::cerr << "Goodbye, cruel world" << std::endl;
#ifndef __clang_analyzer__
int zero = 0; // hide the error at compile-time to avoid a compiler warning
int i = 1 / zero;
Q_UNUSED(i)
#endif
Q_ASSERT(false);
} else if (m_garbage) {
std::cerr << "Writing garbage" << std::endl;
blockingWrite(m_output, "<</GARBAGE = '\"''asdfaqre");
m_output->flush();
} else if (m_wait) {
qDebug() << "waiting in fake valgrind for " << m_wait << " seconds..." << '\n';
doSleep(1000 * m_wait);
}
}
void OutputGenerator::writeOutput()
{
m_timer.setInterval(QRandomGenerator::global()->generate() % 1000);
int lines = 0;
while (!m_input->atEnd()) {
qint64 lastPos = m_input->pos();
QByteArray line = m_input->readLine();
if (lines > 0 && !m_finished && line.contains("<error>")) {
if ((m_crash || m_garbage || m_wait) && QRandomGenerator::global()->generate() % 10 == 1) {
produceRuntimeError();
m_timer.start();
return;
}
m_input->seek(lastPos);
m_timer.start();
return;
} else {
if (!m_finished && line.contains("<state>FINISHED</state>")) {
m_finished = true;
if (m_crash || m_garbage || m_wait) {
produceRuntimeError();
m_timer.start();
return;
}
}
if (!blockingWrite(m_output, line)) {
std::cerr << "Writing to socket failed: " << qPrintable(m_output->errorString()) << std::endl;
emit finished();
return;
}
m_output->flush();
++lines;
}
}
Q_ASSERT(m_input->atEnd());
while (m_output->bytesToWrite() > 0)
m_output->waitForBytesWritten(-1);
emit finished();
}
|
