[12747] | 1 | #include "gtest/gtest.h"
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| 2 | #include "ariba/utility/system/SystemQueue.h"
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| 3 |
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[12750] | 4 | #include <unistd.h> // usleep
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[12756] | 5 | #include <boost/date_time.hpp> // local_time()
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[12750] | 6 |
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[12749] | 7 | #include <ostream>
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| 8 |
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[12747] | 9 | using namespace ::testing;
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| 10 | using namespace ariba::utility;
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[12749] | 11 | using namespace std;
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[12747] | 12 |
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[12756] | 13 | using boost::posix_time::microsec_clock;
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| 14 |
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| 15 |
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[12748] | 16 | /**
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| 17 | * Tests if the SystemQueue is initialized empty and not running.
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| 18 | */
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| 19 | TEST(SystemQueue, Instantiation)
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[12747] | 20 | {
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| 21 | SystemQueue& sysq = SystemQueue::instance();
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[12748] | 22 |
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[12749] | 23 | // cout << &sysq << endl;
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| 24 |
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[12748] | 25 | EXPECT_FALSE( sysq.isRunning() );
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| 26 | EXPECT_TRUE( sysq.isEmpty() );
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| 27 | }
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| 28 |
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| 29 |
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| 30 | /**
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| 31 | * Tests whether calling the SystemQueue::instance() always returns the same object.
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| 32 | *
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| 33 | * NOTE: This is an easy case, since this is the same compile unit..
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| 34 | * But can't hurt to test it anyway.
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| 35 | */
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| 36 | TEST(SystemQueue, Singleton)
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| 37 | {
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| 38 | SystemQueue& sysq = SystemQueue::instance();
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[12747] | 39 | SystemQueue& sysq2 = SystemQueue::instance();
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[12748] | 40 |
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| 41 | // cout << &sysq << endl;
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[12749] | 42 |
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| 43 | EXPECT_TRUE( &sysq == &sysq2 );
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[12747] | 44 | }
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[12748] | 45 |
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| 46 |
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[12749] | 47 | /**
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| 48 | * Start and stop the SystemQueue
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| 49 | */
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| 50 | TEST(SystemQueue, StartStop)
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| 51 | {
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| 52 | SystemQueue& sysq = SystemQueue::instance();
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| 53 |
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| 54 | EXPECT_FALSE( sysq.isRunning() );
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| 55 |
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| 56 | // start
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| 57 | sysq.run();
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| 58 |
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| 59 | EXPECT_TRUE( sysq.isRunning() );
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| 60 |
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| 61 | // stop
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| 62 | sysq.cancel();
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| 63 |
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[12761] | 64 | // XXX weg, wenn das join klappt!!
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| 65 | usleep(100);
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| 66 |
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[12749] | 67 | EXPECT_FALSE( sysq.isRunning() );
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| 68 | }
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| 69 |
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| 70 |
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| 71 | /**
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| 72 | * Test fixture
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| 73 | *
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| 74 | * class that can be called by the SystemQueue
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| 75 | */
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| 76 | // To use a test fixture, derive a class from testing::Test.
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| 77 | class SystemQueueTest :
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| 78 | public testing::Test
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| 79 | {
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| 80 | public:
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| 81 |
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[12751] | 82 | // sleep time when waiting for the system queue (max total / each step)
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| 83 | #define MAX_WAIT 100 // microseconds
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| 84 | #define SLEEP_TIME 10 // microseconds
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| 85 |
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[12749] | 86 | SystemQueueTest() :
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[12751] | 87 | checkmark(false),
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| 88 | last_ordered_call(0)
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[12749] | 89 | {
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| 90 | }
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| 91 |
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| 92 | void Check()
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| 93 | {
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[12761] | 94 | // XXX
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| 95 | cout << "### Check ### "<< endl;
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| 96 |
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[12749] | 97 | checkmark = true;
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| 98 | }
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[12751] | 99 |
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| 100 | void LongRunner()
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| 101 | {
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| 102 | usleep( MAX_WAIT / 2 );
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| 103 |
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| 104 | checkmark = true;
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| 105 | }
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| 106 |
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| 107 |
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| 108 | /// wait for the checkmark to be set by a SystemQueue call, (but not too long!)
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| 109 | void wait_for_checkmark(int max_wait = MAX_WAIT)
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| 110 | {
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| 111 | for ( int i = 0; i < max_wait / SLEEP_TIME; i++)
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| 112 | {
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| 113 | if ( checkmark )
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| 114 | break;
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| 115 |
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[12761] | 116 | cout << "### sleeping for " << SLEEP_TIME << " microseconds ..." << endl;
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[12751] | 117 | usleep(SLEEP_TIME);
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| 118 | }
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| 119 | }
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[12749] | 120 |
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[12751] | 121 | /// call that checks wheather it was performed in order
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| 122 | void OrderedCall(int num)
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| 123 | {
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[12754] | 124 | // XXX
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| 125 | cout << "### OrderedCall num: " << num << endl;
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| 126 |
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[12751] | 127 | // check ordering
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| 128 | EXPECT_EQ( num, last_ordered_call + 1);
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| 129 |
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| 130 | last_ordered_call = num;
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| 131 | }
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| 132 |
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| 133 | /// like OrderedCall, but calls itself to test nested calls
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| 134 | void NestedOrderedCall(int from, int to)
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| 135 | {
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| 136 | // check ordering
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| 137 | OrderedCall(from);
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| 138 |
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| 139 | // nested call
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| 140 | if ( from < to )
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| 141 | {
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| 142 | SystemQueue::instance().scheduleCall(
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| 143 | boost::bind(&SystemQueueTest::NestedOrderedCall,
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| 144 | this,
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| 145 | from+1,
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| 146 | to)
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| 147 | );
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| 148 | }
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| 149 | else
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| 150 | {
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| 151 | /// XXX because the current/old SystemQueue does not pass the Threading test,
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| 152 | /// we have to signal, that when all nested calls are finished,
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| 153 | /// so we need to set the checkmark here..
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| 154 |
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| 155 | checkmark = true;
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| 156 | }
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| 157 | }
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| 158 |
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[12749] | 159 | bool checkmark;
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[12751] | 160 | int last_ordered_call;
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[12749] | 161 | };
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| 162 |
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[12751] | 163 |
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| 164 | /**
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| 165 | * schedule a call and test whether it is actually performed by the SystemQueue
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| 166 | */
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[12749] | 167 | TEST_F(SystemQueueTest, ScheduleCall)
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| 168 | {
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| 169 | SystemQueue& sysq = SystemQueue::instance();
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| 170 | checkmark = false; // just to be sure..
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| 171 |
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| 172 | // start
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| 173 | sysq.run();
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| 174 |
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| 175 | // scheduleCall
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| 176 | sysq.scheduleCall(
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| 177 | boost::bind(&SystemQueueTest::Check, this)
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| 178 | );
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[12751] | 179 |
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| 180 | // wait for the event to happen
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| 181 | wait_for_checkmark(MAX_WAIT);
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[12749] | 182 |
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[12751] | 183 | // stop
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| 184 | sysq.cancel();
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| 185 |
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| 186 | EXPECT_TRUE( checkmark ) << "Function was not called within " << MAX_WAIT << " microseconds.";
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| 187 | }
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| 188 |
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| 189 |
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| 190 | /**
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| 191 | * This test actually tests two things [sorry, but it's hard to test them separately!]
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| 192 | *
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| 193 | * - first: the SystemQueue should not consider itself empty, while an event is processed
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| 194 | * - second: SystemQueue events should be processed in parallel to the main thread
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| 195 | *
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| 196 | * NOTE: The timings here are not obvious, maybe they have to be adjusted on very slow machines
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| 197 | *
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| 198 | * NOTE: !! The current/old SystemQueue does NOT pass this test!!
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| 199 | *
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| 200 | * That's also why we need the unhandy wait_for_checkmark function,
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| 201 | * instead a wait_until_empty function.
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| 202 | */
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| 203 | TEST_F(SystemQueueTest, DISABLED_Threading)
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| 204 | {
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| 205 | SystemQueue& sysq = SystemQueue::instance();
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| 206 | checkmark = false; // just to be sure..
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| 207 |
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| 208 | // start
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| 209 | sysq.run();
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| 210 |
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| 211 | // scheduleCall
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| 212 | sysq.scheduleCall(
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| 213 | boost::bind(&SystemQueueTest::LongRunner, this)
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| 214 | );
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| 215 |
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| 216 | // SystemQueue must not be empty as long as the event is not finished
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| 217 | if ( sysq.isEmpty() )
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[12750] | 218 | {
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[12751] | 219 | // assert that this test is actually meaningful
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| 220 | ASSERT_FALSE( checkmark )
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| 221 | << "NOTE: This is not necessarily a bug, maybe the timing just have to adjusted. Try to increase MAX_WAIT.";
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| 222 |
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| 223 | EXPECT_TRUE( ! sysq.isEmpty() || checkmark );
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[12750] | 224 | }
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[12751] | 225 |
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| 226 | // wait for the event to finish
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| 227 | wait_for_checkmark(MAX_WAIT);
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| 228 |
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| 229 | // stop
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| 230 | sysq.cancel();
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| 231 |
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| 232 | // even the long-runner should finally finish
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| 233 | EXPECT_TRUE( checkmark ) << "Function has not finished within " << MAX_WAIT << " microseconds.";
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| 234 | }
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| 235 |
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| 236 | /**
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| 237 | * schedule multiple calls
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| 238 | *
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| 239 | * each call must be performed, in the correct order
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| 240 | *
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| 241 | * NOTE: The nested calls are not necessarily in order with calls scheduled from the main thread,
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| 242 | * that's fine, therefore we make sure the nested calls are done, before scheduling new ones.
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| 243 | */
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| 244 | TEST_F(SystemQueueTest, MultipleCalls)
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| 245 | {
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| 246 | SystemQueue& sysq = SystemQueue::instance();
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[12750] | 247 |
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[12751] | 248 | // start
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| 249 | sysq.run();
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| 250 |
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| 251 | sysq.scheduleCall( boost::bind(&SystemQueueTest::OrderedCall, this, 1) );
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| 252 | sysq.scheduleCall( boost::bind(&SystemQueueTest::OrderedCall, this, 2) );
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| 253 | sysq.scheduleCall( boost::bind(&SystemQueueTest::NestedOrderedCall, this, 3, 5) );
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| 254 |
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| 255 | // make sure all nested calls are done
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| 256 | wait_for_checkmark(MAX_WAIT); // XXX should be "wait_until_empty() ...."
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| 257 |
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| 258 | checkmark = false;
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| 259 | sysq.scheduleCall( boost::bind(&SystemQueueTest::OrderedCall, this, 6) );
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| 260 |
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| 261 | // XXX same here... [ wait_until_empty() ]
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| 262 | sysq.scheduleCall( boost::bind(&SystemQueueTest::Check, this) );
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| 263 | wait_for_checkmark(MAX_WAIT);
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| 264 |
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| 265 | // evaluation
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| 266 | EXPECT_EQ( 6, last_ordered_call);
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| 267 |
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[12749] | 268 | // stop
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| 269 | sysq.cancel();
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[12751] | 270 | }
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| 271 |
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| 272 |
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| 273 |
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| 274 | /**
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| 275 | * This subclass has some special member functions suitable for timing tests
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[12756] | 276 | *
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| 277 | * NOTE: Timing tests are not always reproducable.. sorry. :-/
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[12751] | 278 | */
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| 279 | class SystemQueueTimingTest :
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| 280 | public SystemQueueTest
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| 281 | {
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| 282 | public:
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[12753] | 283 |
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[12752] | 284 | /**
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| 285 | * typical delay time
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| 286 | *
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| 287 | * should be long enough for meaningful tests,
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| 288 | * but should not lengthen the test excessivly
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| 289 | */
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[12754] | 290 | #define DELAY_TIME 20 // ms
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[12756] | 291 | #define DELAY_MARGIN 2000 // microseconds (1/1000 ms) // TODO maybe this is too much..
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[12753] | 292 |
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| 293 |
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| 294 | /// constructor
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| 295 | SystemQueueTimingTest() :
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| 296 | SystemQueueTest() /* super constructor */,
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[12757] | 297 | sysq( SystemQueue::instance() ),
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| 298 | calls(0)
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[12753] | 299 | {
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| 300 | }
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[12752] | 301 |
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[12753] | 302 | virtual void SetUp()
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| 303 | {
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| 304 | // start SystemQueue
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| 305 | sysq.run();
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| 306 | }
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| 307 |
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| 308 |
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| 309 | virtual void TearDown()
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| 310 | {
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| 311 | // stop SystemQueue
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| 312 | sysq.cancel();
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| 313 | }
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[12756] | 314 |
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| 315 |
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| 316 | /**
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| 317 | * @param placed_in_queue The time (as ptime) when this event is put into the delay queue
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| 318 | * @param intended_sleep_time The time (in microseconds) the event is supposed to sleep in the queue
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| 319 | * @param margin The acceptable margin (in microseconds)
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| 320 | */
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| 321 | void TimeCheckingCall(ptime placed_in_queue, uint64_t intended_sleep_time, uint64_t margin)
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| 322 | {
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| 323 | ptime called_at = microsec_clock::local_time();
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| 324 |
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| 325 | // calculate actual sleep time and difference to intended sleep time
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| 326 | boost::posix_time::time_duration actual_sleep_time = called_at - placed_in_queue;
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| 327 | uint64_t diff = actual_sleep_time.total_microseconds() - intended_sleep_time;
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| 328 |
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| 329 | // info
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[12757] | 330 | cout << "### Timing difference: " << diff << " microseconds" << endl;
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[12756] | 331 |
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| 332 | EXPECT_LT( abs(diff), margin );
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| 333 |
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[12757] | 334 | calls++;
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[12756] | 335 | checkmark = true;
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| 336 | }
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[12753] | 337 |
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| 338 | SystemQueue& sysq;
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[12757] | 339 | int calls;
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[12751] | 340 | };
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| 341 |
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| 342 |
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[12752] | 343 | /**
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| 344 | * schedules a delayed call and tests whether it is called (more or less timely..)
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| 345 | */
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| 346 | TEST_F(SystemQueueTimingTest, DelayedCall)
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[12751] | 347 | {
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[12752] | 348 | // scheduleCall
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| 349 | sysq.scheduleCall(
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[12754] | 350 | boost::bind(&SystemQueueTimingTest::Check, this), DELAY_TIME
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[12752] | 351 | );
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| 352 |
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| 353 | // noting to do until the delay is up..
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[12756] | 354 | usleep(DELAY_TIME*1000 + DELAY_MARGIN*10); // XXX margin too high (TODO lower when SysQ is reimplemented)
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[12752] | 355 |
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| 356 | // wait for the event to happen
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| 357 | wait_for_checkmark(MAX_WAIT);
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| 358 |
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[12754] | 359 | EXPECT_TRUE( checkmark ) << "Delayed function was not called within delaytime ("
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[12752] | 360 | << DELAY_TIME << " ms) + " << (MAX_WAIT + DELAY_MARGIN) << " microseconds.";
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[12749] | 361 | }
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| 362 |
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[12754] | 363 |
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| 364 | /**
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[12755] | 365 | * tests whether the SystemQueue is considered non-empty, while an event is delayed-waiting
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| 366 | */
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| 367 | TEST_F(SystemQueueTimingTest, NotEmptyWhileWaiting)
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| 368 | {
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| 369 | // scheduleCall
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| 370 | sysq.scheduleCall(
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| 371 | boost::bind(&SystemQueueTimingTest::Check, this), DELAY_TIME
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| 372 | );
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| 373 |
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| 374 | // SystemQueue must not be empty as long as the event is not finished (and especially while stille queued)
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| 375 | if ( sysq.isEmpty() )
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| 376 | {
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| 377 | // assert that this test is actually meaningful
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| 378 | ASSERT_FALSE( checkmark )
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| 379 | << "NOTE: This is not necessarily a bug, maybe the timing just have to adjusted. Try to increase MAX_WAIT.";
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| 380 |
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| 381 | EXPECT_TRUE( ! sysq.isEmpty() || checkmark );
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| 382 | }
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| 383 | }
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| 384 |
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| 385 |
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| 386 |
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| 387 | /**
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[12754] | 388 | * schedules a delayed call and tests whether it is called (more or less timely..)
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| 389 | */
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| 390 | TEST_F(SystemQueueTimingTest, MultipleCalls)
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| 391 | {
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| 392 | // schedule 4th call
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| 393 | sysq.scheduleCall(
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| 394 | boost::bind(&SystemQueueTest::OrderedCall, this, 4),
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| 395 | DELAY_TIME*3
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| 396 | );
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| 397 |
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| 398 | // schedule 2nd call
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| 399 | sysq.scheduleCall(
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| 400 | boost::bind(&SystemQueueTest::OrderedCall, this, 2),
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| 401 | DELAY_TIME*1
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| 402 | );
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| 403 |
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| 404 | // schedule 3rd call
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| 405 | sysq.scheduleCall(
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| 406 | boost::bind(&SystemQueueTest::OrderedCall, this, 3),
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| 407 | DELAY_TIME*2
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| 408 | );
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| 409 |
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| 410 | // schedule 1st call (without delay)
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| 411 | sysq.scheduleCall(
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| 412 | boost::bind(&SystemQueueTest::OrderedCall, this, 1)
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| 413 | );
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| 414 |
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| 415 |
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| 416 | // XXX the usual bug..
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| 417 | sysq.scheduleCall(
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[12756] | 418 | boost::bind(&SystemQueueTimingTest::Check, this),
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[12754] | 419 | DELAY_TIME*4
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| 420 | );
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| 421 |
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| 422 | // noting to do until the delay is up..
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[12756] | 423 | usleep(DELAY_TIME * 4000 + DELAY_MARGIN*100); // XXX margin too high
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[12754] | 424 |
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| 425 | // wait for the event to happen
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| 426 | wait_for_checkmark(MAX_WAIT);
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| 427 |
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| 428 | // evaluation
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| 429 | EXPECT_EQ( 4, last_ordered_call);
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| 430 | }
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[12756] | 431 |
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| 432 |
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| 433 | /**
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| 434 | * Schedules a delayed call and test whether the sleep time is acurate
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| 435 | */
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| 436 | TEST_F(SystemQueueTimingTest, TimingSingleCall)
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| 437 | {
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| 438 | ptime now = microsec_clock::local_time();
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| 439 |
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| 440 | sysq.scheduleCall(
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| 441 | boost::bind(&SystemQueueTimingTest::TimeCheckingCall, this,
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| 442 | now, DELAY_TIME*1000, DELAY_MARGIN),
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| 443 | DELAY_TIME
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| 444 | );
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| 445 |
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| 446 | // main thread is going to sleep..
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| 447 | usleep(DELAY_TIME * 1000 + DELAY_MARGIN * 2);
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| 448 | wait_for_checkmark(MAX_WAIT);
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| 449 |
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| 450 | // make sure the measurement function was called at all
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| 451 | EXPECT_TRUE(checkmark) << "Measurement function was NOT RUN AT ALL!";
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| 452 | }
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| 453 |
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[12757] | 454 |
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| 455 | /**
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| 456 | * Like TimingSingleCall but tests whether the timings change when multiple events are scheduled.
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| 457 | */
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| 458 | TEST_F(SystemQueueTimingTest, TimingMultipleCalls)
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| 459 | {
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| 460 | ptime now = microsec_clock::local_time();
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| 461 |
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| 462 | sysq.scheduleCall(
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| 463 | boost::bind(&SystemQueueTimingTest::TimeCheckingCall, this,
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| 464 | now, DELAY_TIME*1000 * 2, DELAY_MARGIN),
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| 465 | DELAY_TIME * 2
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| 466 | );
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| 467 |
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| 468 | sysq.scheduleCall(
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| 469 | boost::bind(&SystemQueueTimingTest::TimeCheckingCall, this,
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| 470 | now, DELAY_TIME*1000 * 3, DELAY_MARGIN),
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| 471 | DELAY_TIME * 3
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| 472 | );
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| 473 |
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| 474 | sysq.scheduleCall(
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| 475 | boost::bind(&SystemQueueTimingTest::TimeCheckingCall, this,
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| 476 | now, DELAY_TIME*1000, DELAY_MARGIN),
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| 477 | DELAY_TIME
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| 478 | );
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| 479 |
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| 480 | // main thread is going to sleep..
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| 481 | usleep(DELAY_TIME * 3000 + DELAY_MARGIN * 2);
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| 482 | wait_for_checkmark(MAX_WAIT); // XXX wait_until_empty
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| 483 |
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| 484 | // make sure the measurement function was called at all
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| 485 | EXPECT_EQ(3, calls) << "Not every event was performed..";
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| 486 | }
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[12758] | 487 |
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| 488 |
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| 489 | /*
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| 490 | * TODO
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| 491 | *
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| 492 | * maybe one more complicated testcall with timing and directly scheduled events
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| 493 | *
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| 494 | * but this probably only makes sense after a working SysQ implementation exists..
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| 495 | */
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