496e99c3b4
Introduces a "validationCounter" field for all handle types that gets incremented (at least) whenever an OS file descriptor/handle gets invalidated or re-allocated. This way, an old eventcore handle to a reused OS handle can always be distinguished from the current one to avoid interference.
114 lines
3.8 KiB
D
114 lines
3.8 KiB
D
/**
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WinAPI based event driver implementation.
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This driver uses overlapped I/O to model asynchronous I/O operations
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efficiently. The driver's event loop processes UI messages, so that
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it integrates with GUI applications transparently.
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*/
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module eventcore.drivers.winapi.driver;
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version (Windows):
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import eventcore.driver;
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import eventcore.drivers.timer;
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import eventcore.drivers.winapi.core;
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import eventcore.drivers.winapi.dns;
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import eventcore.drivers.winapi.events;
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import eventcore.drivers.winapi.files;
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import eventcore.drivers.winapi.pipes;
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import eventcore.drivers.winapi.processes;
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import eventcore.drivers.winapi.signals;
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import eventcore.drivers.winapi.sockets;
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import eventcore.drivers.winapi.watchers;
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import eventcore.internal.utils : mallocT, freeT;
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import core.sys.windows.windows;
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static assert(HANDLE.sizeof <= FD.BaseType.sizeof);
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static assert(FD(cast(size_t)INVALID_HANDLE_VALUE, 0) == FD.init);
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final class WinAPIEventDriver : EventDriver {
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private {
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WinAPIEventDriverCore m_core;
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WinAPIEventDriverFiles m_files;
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WinAPIEventDriverSockets m_sockets;
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WinAPIEventDriverDNS m_dns;
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LoopTimeoutTimerDriver m_timers;
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WinAPIEventDriverEvents m_events;
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WinAPIEventDriverSignals m_signals;
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WinAPIEventDriverWatchers m_watchers;
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WinAPIEventDriverProcesses m_processes;
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WinAPIEventDriverPipes m_pipes;
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}
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static WinAPIEventDriver threadInstance;
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this()
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@safe nothrow @nogc {
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assert(threadInstance is null);
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threadInstance = this;
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import std.exception : enforce;
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WSADATA wd;
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auto res = () @trusted { return WSAStartup(0x0202, &wd); } ();
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assert(res == 0, "Failed to initialize WinSock");
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m_signals = mallocT!WinAPIEventDriverSignals();
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m_timers = mallocT!LoopTimeoutTimerDriver();
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m_core = mallocT!WinAPIEventDriverCore(m_timers);
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m_events = mallocT!WinAPIEventDriverEvents(m_core);
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m_files = mallocT!WinAPIEventDriverFiles(m_core);
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m_sockets = mallocT!WinAPIEventDriverSockets(m_core);
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m_pipes = mallocT!WinAPIEventDriverPipes();
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m_dns = mallocT!WinAPIEventDriverDNS();
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m_watchers = mallocT!WinAPIEventDriverWatchers(m_core);
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m_processes = mallocT!WinAPIEventDriverProcesses();
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}
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@safe: /*@nogc:*/ nothrow:
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override @property inout(WinAPIEventDriverCore) core() inout { return m_core; }
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override @property shared(inout(WinAPIEventDriverCore)) core() inout shared { return m_core; }
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override @property inout(WinAPIEventDriverFiles) files() inout { return m_files; }
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override @property inout(WinAPIEventDriverSockets) sockets() inout { return m_sockets; }
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override @property inout(WinAPIEventDriverDNS) dns() inout { return m_dns; }
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override @property inout(LoopTimeoutTimerDriver) timers() inout { return m_timers; }
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override @property inout(WinAPIEventDriverEvents) events() inout { return m_events; }
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override @property shared(inout(WinAPIEventDriverEvents)) events() inout shared { return m_events; }
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override @property inout(WinAPIEventDriverSignals) signals() inout { return m_signals; }
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override @property inout(WinAPIEventDriverWatchers) watchers() inout { return m_watchers; }
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override @property inout(WinAPIEventDriverProcesses) processes() inout { return m_processes; }
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override @property inout(WinAPIEventDriverPipes) pipes() inout { return m_pipes; }
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override bool dispose()
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{
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if (!m_events) return true;
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if (m_core.checkForLeakedHandles()) return false;
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if (m_events.checkForLeakedHandles()) return false;
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if (m_sockets.checkForLeakedHandles()) return false;
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m_events.dispose();
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m_core.dispose();
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assert(threadInstance !is null);
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threadInstance = null;
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try () @trusted {
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freeT(m_processes);
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freeT(m_watchers);
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freeT(m_dns);
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freeT(m_pipes);
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freeT(m_sockets);
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freeT(m_files);
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freeT(m_events);
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freeT(m_core);
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freeT(m_timers);
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freeT(m_signals);
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} ();
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catch (Exception e) assert(false, e.msg);
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return true;
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}
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}
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