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//
Copyright 2019 The Marl Authors.
//
//
Licensed under the Apache License, Version 2.0 (the "License");
//
you may not use this file except in compliance with the License.
//
You may obtain a copy of the License at
//
//
https://www.apache.org/licenses/LICENSE-2.0
//
//
Unless required by applicable law or agreed to in writing, software
//
distributed under the License is distributed on an "AS IS" BASIS,
//
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
See the License for the specific language governing permissions and
//
limitations under the License.
#
include
"
marl/event.h
"
#
include
"
marl/defer.h
"
#
include
"
marl/waitgroup.h
"
#
include
"
marl_test.h
"
#
include
<
array
>
namespace
std
{
namespace
chrono
{
template
<
typename
Rep,
typename
Period>
std::ostream&
operator
<<(std::ostream& os,
const
duration<Rep, Period>& d) {
return
os << chrono::duration_cast<chrono::microseconds>(d).
count
() <<
"
ms
"
;
}
}
//
namespace chrono
}
//
namespace std
TEST_P
(WithBoundScheduler, EventIsSignalled) {
for
(
auto
mode : {marl::Event::Mode::Manual, marl::Event::Mode::Auto}) {
auto
event =
marl::Event
(mode);
ASSERT_EQ
(event.
isSignalled
(),
false
);
event.
signal
();
ASSERT_EQ
(event.
isSignalled
(),
true
);
ASSERT_EQ
(event.
isSignalled
(),
true
);
event.
clear
();
ASSERT_EQ
(event.
isSignalled
(),
false
);
}
}
TEST_P
(WithBoundScheduler, EventAutoTest) {
auto
event =
marl::Event
(marl::Event::Mode::Auto);
ASSERT_EQ
(event.
test
(),
false
);
event.
signal
();
ASSERT_EQ
(event.
test
(),
true
);
ASSERT_EQ
(event.
test
(),
false
);
}
TEST_P
(WithBoundScheduler, EventManualTest) {
auto
event =
marl::Event
(marl::Event::Mode::Manual);
ASSERT_EQ
(event.
test
(),
false
);
event.
signal
();
ASSERT_EQ
(event.
test
(),
true
);
ASSERT_EQ
(event.
test
(),
true
);
}
TEST_P
(WithBoundScheduler, EventAutoWait) {
std::atomic<
int
> counter = {
0
};
auto
event =
marl::Event
(marl::Event::Mode::Auto);
auto
done =
marl::Event
(marl::Event::Mode::Auto);
for
(
int
i =
0
; i <
3
; i++) {
marl::schedule
([=, &counter] {
event.
wait
();
counter++;
done.
signal
();
});
}
ASSERT_EQ
(counter.
load
(),
0
);
event.
signal
();
done.
wait
();
ASSERT_EQ
(counter.
load
(),
1
);
event.
signal
();
done.
wait
();
ASSERT_EQ
(counter.
load
(),
2
);
event.
signal
();
done.
wait
();
ASSERT_EQ
(counter.
load
(),
3
);
}
TEST_P
(WithBoundScheduler, EventManualWait) {
std::atomic<
int
> counter = {
0
};
auto
event =
marl::Event
(marl::Event::Mode::Manual);
auto
wg =
marl::WaitGroup
(
3
);
for
(
int
i =
0
; i <
3
; i++) {
marl::schedule
([=, &counter] {
event.
wait
();
counter++;
wg.
done
();
});
}
event.
signal
();
wg.
wait
();
ASSERT_EQ
(counter.
load
(),
3
);
}
TEST_P
(WithBoundScheduler, EventSequence) {
for
(
auto
mode : {marl::Event::Mode::Manual, marl::Event::Mode::Auto}) {
std::string sequence;
auto
eventA =
marl::Event
(mode);
auto
eventB =
marl::Event
(mode);
auto
eventC =
marl::Event
(mode);
auto
done =
marl::Event
(mode);
marl::schedule
([=, &sequence] {
eventB.
wait
();
sequence +=
"
B
"
;
eventC.
signal
();
});
marl::schedule
([=, &sequence] {
eventA.
wait
();
sequence +=
"
A
"
;
eventB.
signal
();
});
marl::schedule
([=, &sequence] {
eventC.
wait
();
sequence +=
"
C
"
;
done.
signal
();
});
ASSERT_EQ
(sequence,
"
"
);
eventA.
signal
();
done.
wait
();
ASSERT_EQ
(sequence,
"
ABC
"
);
}
}
TEST_P
(WithBoundScheduler, EventWaitForUnblocked) {
auto
event =
marl::Event
(marl::Event::Mode::Manual);
auto
wg =
marl::WaitGroup
(
1000
);
for
(
int
i =
0
; i <
1000
; i++) {
marl::schedule
([=] {
defer
(wg.
done
());
auto
duration =
std::chrono::seconds
(
10
);
event.
wait_for
(duration);
});
}
event.
signal
();
//
unblock
wg.
wait
();
}
TEST_P
(WithBoundScheduler, EventWaitForTimeTaken) {
auto
event =
marl::Event
(marl::Event::Mode::Auto);
auto
wg =
marl::WaitGroup
(
1000
);
for
(
int
i =
0
; i <
1000
; i++) {
marl::schedule
([=] {
defer
(wg.
done
());
auto
duration =
std::chrono::milliseconds
(
10
);
auto
start =
std::chrono::system_clock::now
();
auto
triggered = event.
wait_for
(duration);
auto
end =
std::chrono::system_clock::now
();
ASSERT_FALSE
(triggered);
ASSERT_GE
(end - start, duration);
});
}
wg.
wait
();
}
TEST_P
(WithBoundScheduler, EventWaitUntilUnblocked) {
auto
event =
marl::Event
(marl::Event::Mode::Manual);
auto
wg =
marl::WaitGroup
(
1000
);
for
(
int
i =
0
; i <
1000
; i++) {
marl::schedule
([=] {
defer
(wg.
done
());
auto
duration =
std::chrono::seconds
(
10
);
auto
start =
std::chrono::system_clock::now
();
event.
wait_until
(start + duration);
});
}
event.
signal
();
//
unblock
wg.
wait
();
}
TEST_P
(WithBoundScheduler, EventWaitUntilTimeTaken) {
auto
event =
marl::Event
(marl::Event::Mode::Auto);
auto
wg =
marl::WaitGroup
(
1000
);
for
(
int
i =
0
; i <
1000
; i++) {
marl::schedule
([=] {
defer
(wg.
done
());
auto
duration =
std::chrono::milliseconds
(
10
);
auto
start =
std::chrono::system_clock::now
();
auto
triggered = event.
wait_until
(start + duration);
auto
end =
std::chrono::system_clock::now
();
ASSERT_FALSE
(triggered);
ASSERT_GE
(end - start, duration);
});
}
wg.
wait
();
}
//
EventWaitStressTest spins up a whole lot of wait_fors(), unblocking some
//
with timeouts and some with an event signal, and then let's all the workers
//
go to idle before repeating.
//
This is testing to ensure that the scheduler handles timeouts correctly when
//
they are early-unblocked. Specifically, this is to test that fibers are
//
not double-placed into the idle or working lists.
TEST_P
(WithBoundScheduler, EventWaitStressTest) {
auto
event =
marl::Event
(marl::Event::Mode::Manual);
for
(
int
i =
0
; i <
10
; i++) {
auto
wg =
marl::WaitGroup
(
100
);
for
(
int
j =
0
; j <
100
; j++) {
marl::schedule
([=] {
defer
(wg.
done
());
event.
wait_for
(
std::chrono::milliseconds
(j));
});
}
std::this_thread::sleep_for
(
std::chrono::milliseconds
(
50
));
event.
signal
();
//
unblock
wg.
wait
();
}
}
TEST_P
(WithBoundScheduler, EventAny) {
for
(
int
i =
0
; i <
3
; i++) {
std::array<marl::Event,
3
> events = {
marl::Event
(marl::Event::Mode::Auto),
marl::Event
(marl::Event::Mode::Auto),
marl::Event
(marl::Event::Mode::Auto),
};
auto
any =
marl::Event::any
(events.
begin
(), events.
end
());
events[i].
signal
();
ASSERT_TRUE
(any.
isSignalled
());
}
}
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