installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / agent / EventLoop.cc

diff --git a/node_modules/node-pty/deps/winpty/src/agent/EventLoop.cc b/node_modules/node-pty/deps/winpty/src/agent/EventLoop.cc
new file mode 100644 (file)
index 0000000..ba5cf18
--- /dev/null
+++ b/node_modules/node-pty/deps/winpty/src/agent/EventLoop.cc
@@ -0,0 +1,99 @@
+// Copyright (c) 2011-2012 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#include "EventLoop.h"
+
+#include <algorithm>
+
+#include "NamedPipe.h"
+#include "../shared/DebugClient.h"
+#include "../shared/WinptyAssert.h"
+
+EventLoop::~EventLoop() {
+    for (NamedPipe *pipe : m_pipes) {
+        delete pipe;
+    }
+    m_pipes.clear();
+}
+
+// Enter the event loop.  Runs until the I/O or timeout handler calls exit().
+void EventLoop::run()
+{
+    std::vector<HANDLE> waitHandles;
+    DWORD lastTime = GetTickCount();
+    while (!m_exiting) {
+        bool didSomething = false;
+
+        // Attempt to make progress with the pipes.
+        waitHandles.clear();
+        for (size_t i = 0; i < m_pipes.size(); ++i) {
+            if (m_pipes[i]->serviceIo(&waitHandles)) {
+                onPipeIo(*m_pipes[i]);
+                didSomething = true;
+            }
+        }
+
+        // Call the timeout if enough time has elapsed.
+        if (m_pollInterval > 0) {
+            int elapsed = GetTickCount() - lastTime;
+            if (elapsed >= m_pollInterval) {
+                onPollTimeout();
+                lastTime = GetTickCount();
+                didSomething = true;
+            }
+        }
+
+        if (didSomething)
+            continue;
+
+        // If there's nothing to do, wait.
+        DWORD timeout = INFINITE;
+        if (m_pollInterval > 0)
+            timeout = std::max(0, (int)(lastTime + m_pollInterval - GetTickCount()));
+        if (waitHandles.size() == 0) {
+            ASSERT(timeout != INFINITE);
+            if (timeout > 0)
+                Sleep(timeout);
+        } else {
+            DWORD result = WaitForMultipleObjects(waitHandles.size(),
+                                                  waitHandles.data(),
+                                                  FALSE,
+                                                  timeout);
+            ASSERT(result != WAIT_FAILED);
+        }
+    }
+}
+
+NamedPipe &EventLoop::createNamedPipe()
+{
+    NamedPipe *ret = new NamedPipe();
+    m_pipes.push_back(ret);
+    return *ret;
+}
+
+void EventLoop::setPollInterval(int ms)
+{
+    m_pollInterval = ms;
+}
+
+void EventLoop::shutdown()
+{
+    m_exiting = true;
+}