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28
29
30#include <QtCore/QCoreApplication>
31#include <QtTest/QtTest>
32
33/* This test must be explicitly enabled since there are no compile tests for valgrind.h */
34#ifdef QT_BUG236484
35#include <valgrind/valgrind.h>
36#endif
37
38class tst_BenchlibCallgrind: public QObject
39{
40 Q_OBJECT
41
42private slots:
43#ifdef QT_BUG236484
44 void failInChildProcess();
45#endif
46
47 void twoHundredMillionInstructions();
48};
49
50#ifdef QT_BUG236484
51void tst_BenchlibCallgrind::failInChildProcess()
52{
53 static double f = 1.0;
54 QBENCHMARK {
55 for (int i = 0; i < 1000000; ++i) {
56 f *= 1.1;
57 if (RUNNING_ON_VALGRIND) QFAIL("Running under valgrind!");
58 }
59 }
60}
61#endif
62
63void tst_BenchlibCallgrind::twoHundredMillionInstructions()
64{
65#if !defined(__GNUC__) || !defined(__i386)
66 QSKIP("This test is only defined for gcc and x86.");
67#else
68 QBENCHMARK {
69 __asm__ __volatile__(
70 "mov $100000000,%%eax \n"
71 "1: \n"
72 "dec %%eax \n"
73 "jnz 1b \n"
74 : /* no output */
75 : /* no input */
76 : /* clobber */ "eax"
77 );
78 }
79#endif
80}
81
82int main(int argc, char *argv[])
83{
84 std::vector<const char*> args(argv, argv + argc);
85 args.push_back(x: "-callgrind");
86 argc = args.size();
87 argv = const_cast<char**>(&args[0]);
88
89 QTEST_MAIN_IMPL(tst_BenchlibCallgrind)
90}
91
92#include "tst_benchlibcallgrind.moc"
93

source code of qtbase/tests/auto/testlib/selftests/benchlibcallgrind/tst_benchlibcallgrind.cpp