mirror of https://github.com/KLayout/klayout.git
354 lines
6.9 KiB
C++
354 lines
6.9 KiB
C++
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/*
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KLayout Layout Viewer
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Copyright (C) 2006-2021 Matthias Koefferlein
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "tlThreads.h"
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#include "tlUnitTest.h"
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#include <stdio.h>
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#if defined(WIN32)
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#include <Windows.h>
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inline void usleep(long us)
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{
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Sleep(us / 1000);
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}
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#else
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#include <unistd.h>
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#endif
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class MyThread : public tl::Thread
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{
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public:
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MyThread () : m_value (0), m_stop (false) { }
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int value ()
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{
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tl::MutexLocker locker (&m_lock);
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return m_value;
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}
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void reset ()
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{
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m_value = 0;
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m_stop = false;
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}
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void run ()
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{
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for (int i = 0; i < 10 && !m_stop; ++i) {
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{
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tl::MutexLocker locker (&m_lock);
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++m_value;
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}
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usleep (10000);
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}
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}
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void stop ()
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{
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m_stop = true;
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}
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private:
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int m_value;
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bool m_stop;
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tl::Mutex m_lock;
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};
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// basic: concurrency, ability to stop async, wait
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TEST(1_basic)
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{
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MyThread my_thread;
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EXPECT_EQ (my_thread.isRunning (), false);
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EXPECT_EQ (my_thread.isFinished (), false);
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my_thread.start ();
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EXPECT_EQ (my_thread.isRunning (), true);
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EXPECT_EQ (my_thread.isFinished (), false);
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while (my_thread.value () < 5)
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;
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my_thread.stop ();
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my_thread.wait ();
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EXPECT_EQ (my_thread.isRunning (), false);
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EXPECT_EQ (my_thread.isFinished (), true);
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my_thread.reset ();
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my_thread.start ();
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EXPECT_EQ (my_thread.isRunning (), true);
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EXPECT_EQ (my_thread.isFinished (), false);
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while (my_thread.value () < 5)
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;
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my_thread.stop ();
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my_thread.wait ();
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EXPECT_EQ (my_thread.isRunning (), false);
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EXPECT_EQ (my_thread.isFinished (), true);
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// stopped before 10 and after 5
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EXPECT_EQ (my_thread.value () >= 5 && my_thread.value () < 10, true);
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}
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#if !defined(HAVE_QT)
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// basic: thread dtor while running
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// NOTE: QThread can't handle this - the pthread-based implementation will terminate the thread in this case
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TEST(1_brute_shutdown)
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{
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MyThread my_thread;
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my_thread.start ();
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EXPECT_EQ (true, true); // makes the compiler happy
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}
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#endif
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// basic: concurrency, ability to stop async, wait
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TEST(1_timed_wait)
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{
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MyThread my_thread;
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my_thread.start ();
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EXPECT_EQ (my_thread.wait (1), false);
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while (my_thread.value () < 5) {
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EXPECT_EQ (my_thread.wait (1), false);
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}
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EXPECT_EQ (my_thread.wait (100000 /*"enough"*/), true);
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}
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int s_mythread2_increment = 1;
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void inc (volatile int &value)
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{
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value += s_mythread2_increment;
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}
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class MyThread2 : public tl::Thread
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{
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public:
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MyThread2 (bool locked) : m_value (0), m_locked (locked) { }
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int value ()
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{
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return m_value;
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}
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void run ()
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{
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if (m_locked) {
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for (int i = 0; i < 10000000; ++i) {
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tl::MutexLocker locker (&m_lock);
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// Do it more elaborate than ++m_value to prevent compiler optimization
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inc (m_value);
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}
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} else {
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for (int i = 0; i < 10000000; ++i) {
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inc (m_value);
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}
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}
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}
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private:
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int m_value;
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tl::Mutex m_lock;
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bool m_locked;
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};
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// Heavily loaded mutex
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TEST(2_locked)
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{
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MyThread2 my_thread (true);
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my_thread.start ();
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// two times - once in the background and once in the main thread
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my_thread.run ();
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my_thread.wait ();
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EXPECT_EQ (my_thread.value (), 20000000);
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}
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// Cross-check: unlocked
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TEST(2_nonlocked)
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{
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MyThread2 my_thread (false);
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my_thread.start ();
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// two times - once in the background and once in the main thread
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my_thread.run ();
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my_thread.wait ();
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EXPECT_EQ (my_thread.value () < 20000000, true);
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}
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// NOTE: ThreadStorage is broken on Qt 4.6.2 (invalid static_cast from type 'void*' to type 'int')
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#if !defined(HAVE_QT) || QT_VERSION >= 0x40700
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static tl::ThreadStorage<int> s_tls;
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class MyThread3 : public tl::Thread
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{
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public:
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MyThread3 () : m_value (0) { }
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int value ()
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{
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return m_value;
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}
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void run ()
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{
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m_value = do_run (10000000);
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}
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int do_run (int n)
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{
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s_tls.setLocalData (0);
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for (int i = 0; i < n; ++i) {
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s_tls.localData () += s_mythread2_increment;
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}
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return s_tls.localData ();
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}
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private:
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int m_value;
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};
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// Thread-local storage
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TEST(3)
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{
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MyThread3 my_thread;
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my_thread.start ();
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// While we start the loop inside the thread we run it outside. Since
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// the counter is TLS, both loops will to the same but with different data.
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// A mutex is not involved.
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EXPECT_EQ (my_thread.do_run (9999999), 9999999);
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my_thread.wait ();
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EXPECT_EQ (my_thread.value (), 10000000);
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}
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#endif
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static tl::WaitCondition s_condition;
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static tl::Mutex s_wait_mutex;
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class MyThread4 : public tl::Thread
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{
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public:
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MyThread4 (int nstop) : m_value (0), m_nstop (nstop), m_stopped (false) { }
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int value ()
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{
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return m_value;
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}
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bool stopped ()
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{
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return m_stopped;
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}
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void run ()
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{
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while (m_value < 10000000) {
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m_value += s_mythread2_increment;
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if (m_value == m_nstop) {
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tl::MutexLocker locker (&s_wait_mutex);
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m_stopped = true;
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s_condition.wait (&s_wait_mutex);
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m_stopped = false;
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}
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}
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}
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private:
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int m_value;
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int m_nstop;
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bool m_stopped;
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};
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// WaitCondition
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TEST(4_wakeAll)
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{
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MyThread4 thr1 (3000000), thr2 (7000000);
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thr1.start ();
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thr2.start ();
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while (true) {
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bool res;
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{
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tl::MutexLocker locker (&s_wait_mutex);
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res = thr1.stopped () && thr2.stopped ();
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}
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if (res) {
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break;
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}
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EXPECT_EQ (thr1.isRunning (), true);
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EXPECT_EQ (thr2.isRunning (), true);
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tl_assert (thr1.isRunning () && thr2.isRunning ());
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}
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EXPECT_EQ (thr1.value (), 3000000);
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EXPECT_EQ (thr2.value (), 7000000);
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s_condition.wakeAll ();
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thr1.wait ();
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thr2.wait ();
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EXPECT_EQ (thr1.value (), 10000000);
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EXPECT_EQ (thr2.value (), 10000000);
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}
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// WaitCondition with two wakeOne
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TEST(4_wakeOne)
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{
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MyThread4 thr1 (3000000), thr2 (7000000);
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thr1.start ();
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thr2.start ();
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while (true) {
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bool res;
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{
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tl::MutexLocker locker (&s_wait_mutex);
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res = thr1.stopped () && thr2.stopped ();
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}
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if (res) {
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break;
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}
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EXPECT_EQ (thr1.isRunning (), true);
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EXPECT_EQ (thr2.isRunning (), true);
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tl_assert (thr1.isRunning () && thr2.isRunning ());
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}
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EXPECT_EQ (thr1.value (), 3000000);
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EXPECT_EQ (thr2.value (), 7000000);
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s_condition.wakeOne ();
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s_condition.wakeOne ();
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thr1.wait ();
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thr2.wait ();
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EXPECT_EQ (thr1.value (), 10000000);
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EXPECT_EQ (thr2.value (), 10000000);
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}
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