installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / unix-adapter / InputHandler.cc

diff --git a/node_modules/node-pty/deps/winpty/src/unix-adapter/InputHandler.cc b/node_modules/node-pty/deps/winpty/src/unix-adapter/InputHandler.cc
new file mode 100644 (file)
index 0000000..39f1e09
--- /dev/null
+++ b/node_modules/node-pty/deps/winpty/src/unix-adapter/InputHandler.cc
@@ -0,0 +1,114 @@
+// Copyright (c) 2011-2015 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 "InputHandler.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/select.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <vector>
+
+#include "../shared/DebugClient.h"
+#include "Util.h"
+#include "WakeupFd.h"
+
+InputHandler::InputHandler(
+        HANDLE conin, int inputfd, WakeupFd &completionWakeup) :
+    m_conin(conin),
+    m_inputfd(inputfd),
+    m_completionWakeup(completionWakeup),
+    m_threadHasBeenJoined(false),
+    m_shouldShutdown(0),
+    m_threadCompleted(0)
+{
+    pthread_create(&m_thread, NULL, InputHandler::threadProcS, this);
+}
+
+void InputHandler::shutdown() {
+    startShutdown();
+    if (!m_threadHasBeenJoined) {
+        int ret = pthread_join(m_thread, NULL);
+        assert(ret == 0 && "pthread_join failed");
+        m_threadHasBeenJoined = true;
+    }
+}
+
+void InputHandler::threadProc() {
+    std::vector<char> buffer(4096);
+    fd_set readfds;
+    FD_ZERO(&readfds);
+    while (true) {
+        // Handle shutdown.
+        m_wakeup.reset();
+        if (m_shouldShutdown) {
+            trace("InputHandler: shutting down");
+            break;
+        }
+
+        // Block until data arrives.
+        {
+            const int max_fd = std::max(m_inputfd, m_wakeup.fd());
+            FD_SET(m_inputfd, &readfds);
+            FD_SET(m_wakeup.fd(), &readfds);
+            selectWrapper("InputHandler", max_fd + 1, &readfds);
+            if (!FD_ISSET(m_inputfd, &readfds)) {
+                continue;
+            }
+        }
+
+        const int numRead = read(m_inputfd, &buffer[0], buffer.size());
+        if (numRead == -1 && errno == EINTR) {
+            // Apparently, this read is interrupted on Cygwin 1.7 by a SIGWINCH
+            // signal even though I set the SA_RESTART flag on the handler.
+            continue;
+        }
+
+        // tty is closed, or the read failed for some unexpected reason.
+        if (numRead <= 0) {
+            trace("InputHandler: tty read failed: numRead=%d", numRead);
+            break;
+        }
+
+        DWORD written = 0;
+        BOOL ret = WriteFile(m_conin,
+                             &buffer[0], numRead,
+                             &written, NULL);
+        if (!ret || written != static_cast<DWORD>(numRead)) {
+            if (!ret && GetLastError() == ERROR_BROKEN_PIPE) {
+                trace("InputHandler: pipe closed: written=%u",
+                    static_cast<unsigned int>(written));
+            } else {
+                trace("InputHandler: write failed: "
+                    "ret=%d lastError=0x%x numRead=%d written=%u",
+                    ret,
+                    static_cast<unsigned int>(GetLastError()),
+                    numRead,
+                    static_cast<unsigned int>(written));
+            }
+            break;
+        }
+    }
+    m_threadCompleted = 1;
+    m_completionWakeup.set();
+}