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Bugfix: CallQueue_test initialisation was not threadsafe (see also #1131)

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...which showed up under high system load.
The initialisation of the member variables for the check sum
could be delayed while the corresponding thread was already running
This commit is contained in:
Fischlurch 2018-03-26 04:40:54 +02:00
parent f4195c102a
commit 4d783770d0
4 changed files with 179 additions and 19 deletions
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5
src/proc/play/output-director.cpp
View file

@ -100,7 +100,10 @@ namespace play {
if (not shutdown_initiated_)
{
shutdown_initiated_ = true;
Thread ("Output shutdown supervisor", bind (&OutputDirector::bringDown, this, completedSignal));
Thread ("Output shutdown supervisor",
[=]{
bringDown (completedSignal);
});
}
}

12
tests/backend/thread-wrapper-self-recognition-test.cpp
View file

@ -40,15 +40,13 @@ namespace test {
class TestThread
: Thread
{
void
doIt()
{
CHECK (invocation_happens_within_this_thread());
}
public:
TestThread()
: Thread{"test Thread self recognition", [&]() { doIt(); }}
: Thread{"test Thread self recognition"
,[&]()
{
CHECK (invocation_happens_within_this_thread());
}}
{ }
bool

5
tests/basics/call-queue-test.cpp
View file

@ -200,6 +200,7 @@ namespace test{
uint cnt = rand() % MAX_RAND_STEPS;
uint delay = rand() % MAX_RAND_DELAY;
syncPoint(); // block until all threads are ready
for (uint i=0; i<cnt; ++i)
{
uint increment = rand() % MAX_RAND_INCMT;
@ -234,6 +235,10 @@ namespace test{
}
};
// unleash all worker functions
for (auto& thread : workers)
thread.sync();
// wait for termination of all threads
for (auto& worker : workers)
worker.join();

176
wiki/thinkPad.ichthyo.mm
View file

@ -26625,11 +26625,11 @@
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@ -27744,8 +27744,8 @@
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<icon BUILTIN="button_ok"/>
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<icon BUILTIN="button_ok"/>
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<node COLOR="#338800" CREATED="1521963017631" ID="ID_380828830" MODIFIED="1521963032077" TEXT="Neue Seite angelegt und von The Inner Core verlinkt">
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1521929186281" ID="ID_1078337367" MODIFIED="1521929199008" TEXT="ein, zwei Einleitungss&#xe4;tze dazu">
<icon BUILTIN="flag-yellow"/>
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<icon BUILTIN="flag-yellow"/>
@ -27866,6 +27866,12 @@
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<icon BUILTIN="help"/>
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</node>
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@ -30831,7 +30837,155 @@
</node>
</node>
</node>
<node BACKGROUND_COLOR="#fdfdcf" COLOR="#990000" CREATED="1446356368070" ID="ID_768449868" MODIFIED="1518487921106" TEXT="Au Au"/>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
TEST Dispatch functors into other threads: CallQueue_test .. FAILED
</p>
<p>
unexpected return value 134, expected 0
</p>
<p>
stderr was:
</p>
<p>
0000000459: INFO: suite.cpp:180: thread_1: invokeTestCase: ++------------------- invoking TEST: CallQueue_test
</p>
<p>
0000003117: CHECK: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: (globalProducerSum == globalConsumerSum)
</p>
<p>
0000003127: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: /Werk/devel/lumi/target/modules/libtest-basics.so(_ZN3lib4test14CallQueue_test19verify_ThreadSafetyEv+0x24a) [0x7fdfce328a20]
</p>
<p>
0000003128: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: /Werk/devel/lumi/target/modules/libtest-basics.so(_ZN3lib4test14CallQueue_test3runERSt6vectorISsSaISsEE+0x34) [0x7fdfce32764e]
</p>
<p>
0000003129: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: /Werk/devel/lumi/target/modules/liblumierasupport.so(+0x1d7cb0) [0x7fdfcb7dfcb0]
</p>
<p>
0000003130: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: /Werk/devel/lumi/target/modules/liblumierasupport.so(_ZN4test5Suite3runERSt6vectorISsSaISsEE+0x38f) [0x7fdfcb7e0249]
</p>
<p>
0000003131: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: ./test-suite() [0x40625e]
</p>
<p>
0000003132: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fdfc9029b45]
</p>
<p>
0000003133: BACKTRACE: call-queue-test.cpp:251: thread_1: verify_ThreadSafety: ./test-suite() [0x4060a9]
</p>
<p>
END
</p>
</body>
</html>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
for I in `seq 1 50`; do target/test-suite CallQueue_test; done
</p>
</body>
</html></richcontent>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
habe gleichzeitig erst die Testsuite gebaut mit -j 36 und dann laufen lassen.
</p>
<p>
Gleichzeitig aber auch noch das ./build-website-Skript
</p>
<p>
und eine Doxygen-Seite im Browser geladen
</p>
</body>
</html></richcontent>
</node>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
weil sich die Threads gegenseitig ihre Counter inkrementieren.
</p>
</body>
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<head>
</head>
<body>
<p>
alle anderen (mit Ausnahme von BusTerm_test)
</p>
<p>
verwenden globale Variable oder &#252;berhaupt keine Objektfelder
</p>
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