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// tut
#include <tut/tut.hpp>
// geos
#include <geos/util/Interrupt.h>
// std
#include <chrono>
#include <functional>
#include <thread>
using geos::util::Interrupt;
using geos::util::CurrentThreadInterrupt;
namespace tut {
//
// Test Group
//
// Common data used in test cases.
struct test_interrupt_data {
static void workForever() {
try {
//std::cerr << "Started " << std::this_thread::get_id() << "." << std::endl;
while (true) {
std::this_thread::sleep_for(std::chrono::milliseconds(10));
GEOS_CHECK_FOR_INTERRUPTS();
}
} catch (const std::exception&) {
//std::cerr << "Interrupted " << std::this_thread::get_id() << "." << std::endl;
}
}
static void interruptNow() {
Interrupt::request();
}
static std::map<std::thread::id, bool>* toInterrupt;
static void interruptIfRequested() {
if (toInterrupt == nullptr) {
return;
}
auto it = toInterrupt->find(std::this_thread::get_id());
if (it != toInterrupt->end() && it->second) {
it->second = false;
CurrentThreadInterrupt::interrupt();
}
}
static bool interruptCurrentThreadIfRequested() {
if (toInterrupt == nullptr) {
return false;
}
auto it = toInterrupt->find(std::this_thread::get_id());
if (it != toInterrupt->end() && it->second) {
it->second = false;
return true;
}
return false;
}
};
std::map<std::thread::id, bool>* test_interrupt_data::toInterrupt = nullptr;
typedef test_group<test_interrupt_data> group;
typedef group::object object;
group test_interrupt_group("geos::util::Interrupt");
//
// Test Cases
//
// Interrupt worker thread via global request from main thead
template<>
template<>
void object::test<1>
()
{
std::thread t(workForever);
Interrupt::request();
t.join();
}
// Interrupt worker thread via thread-specific request from worker thread using a callback
template<>
template<>
void object::test<2>
()
{
Interrupt::registerCallback(interruptIfRequested);
std::thread t1(workForever);
std::thread t2(workForever);
// Create map and add entries before exposing it to the interrupt
// callback that will be accessed from multiple threads. It's OK
// for multiple threads to modify entries in the map but not for
// multiple threads to create entries.
std::map<std::thread::id, bool> shouldInterrupt;
shouldInterrupt[t1.get_id()] = false;
shouldInterrupt[t2.get_id()] = false;
toInterrupt = &shouldInterrupt;
shouldInterrupt[t2.get_id()] = true;
t2.join();
shouldInterrupt[t1.get_id()] = true;
t1.join();
}
// Register separate callbacks for each thread. Each callback will
// request interruption of itself only.
template<>
template<>
void object::test<3>
()
{
bool interrupt1 = false;
int numCalls2 = 0;
auto cb1 = ([](void* data) -> int {
return *static_cast<bool*>(data);
});
auto cb2 = ([](void* data) -> int {
return ++*static_cast<int*>(data) > 5;
});
std::thread t1([&cb1, &interrupt1]() {
CurrentThreadInterrupt::registerCallback(cb1, &interrupt1);
});
std::thread t2([&cb2, &numCalls2]() {
CurrentThreadInterrupt::registerCallback(cb2, &numCalls2);
});
t2.join();
interrupt1 = true;
t1.join();
}
} // namespace tut
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