kopia lustrzana https://github.com/jameshball/osci-render
86 wiersze
2.0 KiB
C++
86 wiersze
2.0 KiB
C++
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/*
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* IXSelectInterruptEvent.cpp
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*/
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//
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// On Windows we use a Windows Event to wake up ix::poll() (WSAWaitForMultipleEvents).
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// And on any other platform that doesn't support pipe file descriptors we
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// emulate the interrupt event by using a short timeout with ix::poll() and
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// read from the SelectInterrupt. (see Socket::poll() "Emulation mode")
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//
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#include <algorithm>
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#include "IXSelectInterruptEvent.h"
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namespace ix
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{
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SelectInterruptEvent::SelectInterruptEvent()
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{
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#ifdef _WIN32
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_event = CreateEvent(NULL, TRUE, FALSE, NULL);
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#endif
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}
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SelectInterruptEvent::~SelectInterruptEvent()
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{
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#ifdef _WIN32
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CloseHandle(_event);
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#endif
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}
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bool SelectInterruptEvent::init(std::string& /*errorMsg*/)
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{
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return true;
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}
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bool SelectInterruptEvent::notify(uint64_t value)
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{
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std::lock_guard<std::mutex> lock(_valuesMutex);
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// WebSocket implementation detail: We only need one of the values in the queue
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if (std::find(_values.begin(), _values.end(), value) == _values.end())
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_values.push_back(value);
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#ifdef _WIN32
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SetEvent(_event); // wake up
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#endif
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return true;
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}
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uint64_t SelectInterruptEvent::read()
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{
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std::lock_guard<std::mutex> lock(_valuesMutex);
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if (_values.size() > 0)
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{
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uint64_t value = _values.front();
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_values.pop_front();
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#ifdef _WIN32
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// signal the event if there is still data in the queue
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if (_values.size() == 0)
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ResetEvent(_event);
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#endif
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return value;
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}
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return 0;
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}
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bool SelectInterruptEvent::clear()
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{
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std::lock_guard<std::mutex> lock(_valuesMutex);
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_values.clear();
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#ifdef _WIN32
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ResetEvent(_event);
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#endif
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return true;
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}
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void* SelectInterruptEvent::getEvent() const
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{
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#ifdef _WIN32
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return reinterpret_cast<void*>(_event);
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#else
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return nullptr;
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#endif
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}
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} // namespace ix
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