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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QTest>
#include <QDirIterator>
#ifdef Q_OS_WIN
# include <qt_windows.h>
#else
# include <sys/stat.h>
# include <sys/types.h>
# include <dirent.h>
# include <unistd.h>
#endif
class tst_QDir_10000 : public QObject
{
Q_OBJECT
public slots:
void initTestCase()
{
QDir testdir = QDir::tempPath();
const QString subfolder_name = QLatin1String("test_speed");
QVERIFY(testdir.mkdir(subfolder_name));
QVERIFY(testdir.cd(subfolder_name));
for (uint i=0; i<10000; ++i) {
QFile file(testdir.absolutePath() + "/testfile_" + QString::number(i));
file.open(QIODevice::WriteOnly);
}
}
void cleanupTestCase()
{
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
testdir.setSorting(QDir::Unsorted);
testdir.setFilter(QDir::AllEntries | QDir::System | QDir::Hidden);
foreach (const QString &filename, testdir.entryList()) {
testdir.remove(filename);
}
}
const QDir temp = QDir(QDir::tempPath());
temp.rmdir(QLatin1String("test_speed"));
}
private slots:
void baseline() {}
void sizeSpeed()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
QBENCHMARK {
QFileInfoList fileInfoList = testdir.entryInfoList(QDir::Files, QDir::Unsorted);
foreach (const QFileInfo &fileInfo, fileInfoList) {
fileInfo.isDir();
fileInfo.size();
}
}
}
void sizeSpeedIterator()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
QBENCHMARK {
QDirIterator dit(testdir.path(), QDir::Files);
while (dit.hasNext()) {
const auto fi = dit.nextFileInfo();
(void)fi.isDir();
(void)fi.size();
}
}
}
void sizeSpeedWithoutFilter()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
QBENCHMARK {
QFileInfoList fileInfoList = testdir.entryInfoList(QDir::NoFilter, QDir::Unsorted);
foreach (const QFileInfo &fileInfo, fileInfoList) {
fileInfo.size();
}
}
}
void sizeSpeedWithoutFilterIterator()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
QBENCHMARK {
QDirIterator dit(testdir.path());
while (dit.hasNext()) {
const auto fi = dit.nextFileInfo();
(void)fi.isDir();
(void)fi.size();
}
}
}
void sizeSpeedWithoutFileInfoList()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
testdir.setSorting(QDir::Unsorted);
QBENCHMARK {
QStringList fileList = testdir.entryList(QDir::NoFilter, QDir::Unsorted);
foreach (const QString &filename, fileList) {
QFileInfo fileInfo(filename);
fileInfo.size();
}
}
}
void iDontWantAnyStat()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
testdir.setSorting(QDir::Unsorted);
testdir.setFilter(QDir::AllEntries | QDir::System | QDir::Hidden);
QBENCHMARK {
QStringList fileList = testdir.entryList(QDir::NoFilter, QDir::Unsorted);
foreach (const QString &filename, fileList) {
Q_UNUSED(filename);
}
}
}
void iDontWantAnyStatIterator()
{
QBENCHMARK {
QDirIterator dit(QDir::tempPath() + QLatin1String("/test_speed"));
while (dit.hasNext()) {
dit.next();
}
}
}
void sorted_byTime()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
testdir.setSorting(QDir::Time);
testdir.setFilter(QDir::AllEntries | QDir::System | QDir::Hidden);
QBENCHMARK {
QStringList fileList = testdir.entryList(QDir::NoFilter, QDir::Time);
foreach (const QString &filename, fileList) {
Q_UNUSED(filename);
}
}
}
void sorted_byName()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
testdir.setFilter(QDir::AllEntries | QDir::System | QDir::Hidden);
QBENCHMARK {
[[maybe_unused]] auto r = testdir.entryInfoList(QDir::NoFilter, QDir::Name);
}
}
void sizeSpeedWithoutFilterLowLevel()
{
QDir testdir(QDir::tempPath() + QLatin1String("/test_speed"));
#ifdef Q_OS_WIN
const wchar_t *dirpath = (wchar_t*)testdir.absolutePath().utf16();
wchar_t appendedPath[MAX_PATH];
wcscpy(appendedPath, dirpath);
wcscat(appendedPath, L"\\*");
WIN32_FIND_DATA fd;
HANDLE hSearch = FindFirstFileW(appendedPath, &fd);
QVERIFY(hSearch != INVALID_HANDLE_VALUE);
QBENCHMARK {
do {
} while (FindNextFile(hSearch, &fd));
}
FindClose(hSearch);
#else
DIR *dir = opendir(qPrintable(testdir.absolutePath()));
QVERIFY(dir);
QVERIFY(!chdir(qPrintable(testdir.absolutePath())));
QBENCHMARK {
struct dirent *item = readdir(dir);
while (item) {
char *fileName = item->d_name;
struct stat fileStat;
QVERIFY(!stat(fileName, &fileStat));
item = readdir(dir);
}
}
closedir(dir);
#endif
}
};
QTEST_MAIN(tst_QDir_10000)
#include "tst_bench_qdir_10000.moc"
|
