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Add user-defined clock to libstdc++ condition_variable tests

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2019-09-04  Mike Crowe  <mac@mcrowe.com>

	* testsuite/30_threads/condition_variable/members/2.cc (test01):
	Parameterise so that test can be run against an arbitrary clock.
	(main): Test using std::chrono::steady_clock and a user-defined
	clock in addition to the previous std::chrono::system_clock.
	* testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.

From-SVN: r275389
This commit is contained in:
Mike Crowe 2019-09-04 22:43:20 +00:00 committed by Jonathan Wakely
parent 9eb730b839
commit 76e0dd66c8
3 changed files with 69 additions and 8 deletions
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8
libstdc++-v3/ChangeLog
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@ -1,3 +1,11 @@
2019-09-04 Mike Crowe <mac@mcrowe.com>
* testsuite/30_threads/condition_variable/members/2.cc (test01):
Parameterise so that test can be run against an arbitrary clock.
(main): Test using std::chrono::steady_clock and a user-defined
clock in addition to the previous std::chrono::system_clock.
* testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
2019-09-03 Ulrich Weigand <uweigand@de.ibm.com>
* crossconfig.m4: Remove references to spu.

39
libstdc++-v3/testsuite/30_threads/condition_variable/members/2.cc
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@ -26,6 +26,7 @@
#include <system_error>
#include <testsuite_hooks.h>
template <typename ClockType>
void test01()
{
try
@ -35,10 +36,10 @@ void test01()
std::mutex m;
std::unique_lock<std::mutex> l(m);
auto then = std::chrono::steady_clock::now();
auto then = ClockType::now();
std::cv_status result = c1.wait_until(l, then + ms);
VERIFY( result == std::cv_status::timeout );
VERIFY( (std::chrono::steady_clock::now() - then) >= ms );
VERIFY( (ClockType::now() - then) >= ms );
VERIFY( l.owns_lock() );
}
catch (const std::system_error& e)
@ -102,9 +103,39 @@ void test01_alternate_clock()
}
}
/* User defined clock that ticks in two-thousandths of a second
forty-two minutes ahead of steady_clock. */
struct user_defined_clock
{
typedef std::chrono::steady_clock::rep rep;
typedef std::ratio<1, 2000> period;
typedef std::chrono::duration<rep, period> duration;
typedef std::chrono::time_point<user_defined_clock> time_point;
static constexpr bool is_steady = true;
static time_point now() noexcept
{
using namespace std::chrono;
const auto steady_since_epoch = steady_clock::now().time_since_epoch();
const auto user_since_epoch = duration_cast<duration>(steady_since_epoch);
return time_point(user_since_epoch + minutes(42));
}
};
/*
It's not possible for this test to automatically ensure that the
system_clock test cases result in a wait on CLOCK_REALTIME and steady_clock
test cases result in a wait on CLOCK_MONOTONIC. It's recommended to run the
test under strace(1) and check whether the expected futex calls are made by
glibc. See https://gcc.gnu.org/ml/libstdc++/2019-09/msg00022.html for
instructions.
*/
int main()
{
test01();
test01<std::chrono::steady_clock>();
test01<std::chrono::system_clock>();
test01<user_defined_clock>();
test01_alternate_clock();
return 0;
}

30
libstdc++-v3/testsuite/30_threads/condition_variable_any/members/2.cc
View File

@ -51,6 +51,7 @@ struct Mutex
};
template <typename ClockType>
void test01()
{
try
@ -60,10 +61,10 @@ void test01()
Mutex m;
m.lock();
auto then = std::chrono::steady_clock::now();
auto then = ClockType::now();
std::cv_status result = c1.wait_until(m, then + ms);
VERIFY( result == std::cv_status::timeout );
VERIFY( (std::chrono::steady_clock::now() - then) >= ms );
VERIFY( (ClockType::now() - then) >= ms );
VERIFY( m.locked );
}
catch (const std::system_error& e)
@ -76,8 +77,29 @@ void test01()
}
}
/* User defined clock that ticks in two-thousandths of a second
forty-two minutes ahead of steady_clock. */
struct user_defined_clock
{
typedef std::chrono::steady_clock::rep rep;
typedef std::ratio<1, 2000> period;
typedef std::chrono::duration<rep, period> duration;
typedef std::chrono::time_point<user_defined_clock> time_point;
static constexpr bool is_steady = true;
static time_point now() noexcept
{
using namespace std::chrono;
const auto steady_since_epoch = steady_clock::now().time_since_epoch();
const auto user_since_epoch = duration_cast<duration>(steady_since_epoch);
return time_point(user_since_epoch + minutes(42));
}
};
int main()
{
test01();
return 0;
test01<std::chrono::steady_clock>();
test01<std::chrono::system_clock>();
test01<user_defined_clock>();
}