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-rw-r--r--ipc/unixfd/UnixFdWatcher.cpp128
-rw-r--r--ipc/unixfd/UnixFdWatcher.h69
-rw-r--r--ipc/unixfd/UnixFileWatcher.cpp45
-rw-r--r--ipc/unixfd/UnixFileWatcher.h33
-rw-r--r--ipc/unixfd/UnixSocketWatcher.cpp136
-rw-r--r--ipc/unixfd/UnixSocketWatcher.h72
-rw-r--r--ipc/unixfd/moz.build21
7 files changed, 504 insertions, 0 deletions
diff --git a/ipc/unixfd/UnixFdWatcher.cpp b/ipc/unixfd/UnixFdWatcher.cpp
new file mode 100644
index 000000000..41289a90b
--- /dev/null
+++ b/ipc/unixfd/UnixFdWatcher.cpp
@@ -0,0 +1,128 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <fcntl.h>
+#include "UnixFdWatcher.h"
+
+#ifdef CHROMIUM_LOG
+#undef CHROMIUM_LOG
+#endif
+
+#if defined(MOZ_WIDGET_GONK)
+#include <android/log.h>
+#define CHROMIUM_LOG(args...) __android_log_print(ANDROID_LOG_INFO, "I/O", args);
+#else
+#include <stdio.h>
+#define IODEBUG true
+#define CHROMIUM_LOG(args...) if (IODEBUG) printf(args);
+#endif
+
+namespace mozilla {
+namespace ipc {
+
+UnixFdWatcher::~UnixFdWatcher()
+{
+ NS_WARNING_ASSERTION(!IsOpen(), "mFd should have been closed already");
+}
+
+void
+UnixFdWatcher::Close()
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
+
+ if (NS_WARN_IF(!IsOpen())) {
+ /* mFd should have been open */
+ return;
+ }
+ OnClose();
+ RemoveWatchers(READ_WATCHER|WRITE_WATCHER);
+ mFd.dispose();
+}
+
+void
+UnixFdWatcher::AddWatchers(unsigned long aWatchers, bool aPersistent)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
+ MOZ_ASSERT(IsOpen());
+
+ // Before we add a watcher, we need to remove it! Removing is always
+ // safe, but adding the same watcher twice can lead to endless loops
+ // inside libevent.
+ RemoveWatchers(aWatchers);
+
+ if (aWatchers & READ_WATCHER) {
+ MessageLoopForIO::current()->WatchFileDescriptor(
+ mFd,
+ aPersistent,
+ MessageLoopForIO::WATCH_READ,
+ &mReadWatcher,
+ this);
+ }
+ if (aWatchers & WRITE_WATCHER) {
+ MessageLoopForIO::current()->WatchFileDescriptor(
+ mFd,
+ aPersistent,
+ MessageLoopForIO::WATCH_WRITE,
+ &mWriteWatcher,
+ this);
+ }
+}
+
+void
+UnixFdWatcher::RemoveWatchers(unsigned long aWatchers)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
+ MOZ_ASSERT(IsOpen());
+
+ if (aWatchers & READ_WATCHER) {
+ mReadWatcher.StopWatchingFileDescriptor();
+ }
+ if (aWatchers & WRITE_WATCHER) {
+ mWriteWatcher.StopWatchingFileDescriptor();
+ }
+}
+
+void
+UnixFdWatcher::OnError(const char* aFunction, int aErrno)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
+
+ CHROMIUM_LOG("%s failed with error %d (%s)",
+ aFunction, aErrno, strerror(aErrno));
+}
+
+UnixFdWatcher::UnixFdWatcher(MessageLoop* aIOLoop)
+: mIOLoop(aIOLoop)
+{
+ MOZ_ASSERT(mIOLoop);
+}
+
+UnixFdWatcher::UnixFdWatcher(MessageLoop* aIOLoop, int aFd)
+: mIOLoop(aIOLoop)
+, mFd(aFd)
+{
+ MOZ_ASSERT(mIOLoop);
+}
+
+void
+UnixFdWatcher::SetFd(int aFd)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
+ MOZ_ASSERT(!IsOpen());
+ MOZ_ASSERT(FdIsNonBlocking(aFd));
+
+ mFd = aFd;
+}
+
+bool
+UnixFdWatcher::FdIsNonBlocking(int aFd)
+{
+ int flags = TEMP_FAILURE_RETRY(fcntl(aFd, F_GETFL));
+ return (flags > 0) && (flags & O_NONBLOCK);
+}
+
+}
+}
diff --git a/ipc/unixfd/UnixFdWatcher.h b/ipc/unixfd/UnixFdWatcher.h
new file mode 100644
index 000000000..676b1dbf0
--- /dev/null
+++ b/ipc/unixfd/UnixFdWatcher.h
@@ -0,0 +1,69 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_UnixFdWatcher_h
+#define mozilla_ipc_UnixFdWatcher_h
+
+#include "base/message_loop.h"
+#include "mozilla/FileUtils.h"
+
+namespace mozilla {
+namespace ipc {
+
+class UnixFdWatcher : public MessageLoopForIO::Watcher
+{
+public:
+ enum {
+ READ_WATCHER = 1<<0,
+ WRITE_WATCHER = 1<<1
+ };
+
+ virtual ~UnixFdWatcher();
+
+ MessageLoop* GetIOLoop() const
+ {
+ return mIOLoop;
+ }
+
+ int GetFd() const
+ {
+ return mFd;
+ }
+
+ bool IsOpen() const
+ {
+ return GetFd() >= 0;
+ }
+
+ virtual void Close();
+
+ void AddWatchers(unsigned long aWatchers, bool aPersistent);
+ void RemoveWatchers(unsigned long aWatchers);
+
+ // Callback method that's run before closing the file descriptor
+ virtual void OnClose() {};
+
+ // Callback method that's run on POSIX errors
+ virtual void OnError(const char* aFunction, int aErrno);
+
+protected:
+ UnixFdWatcher(MessageLoop* aIOLoop);
+ UnixFdWatcher(MessageLoop* aIOLoop, int aFd);
+ void SetFd(int aFd);
+
+private:
+ static bool FdIsNonBlocking(int aFd);
+
+ MessageLoop* mIOLoop;
+ ScopedClose mFd;
+ MessageLoopForIO::FileDescriptorWatcher mReadWatcher;
+ MessageLoopForIO::FileDescriptorWatcher mWriteWatcher;
+};
+
+}
+}
+
+#endif
diff --git a/ipc/unixfd/UnixFileWatcher.cpp b/ipc/unixfd/UnixFileWatcher.cpp
new file mode 100644
index 000000000..67e247b5b
--- /dev/null
+++ b/ipc/unixfd/UnixFileWatcher.cpp
@@ -0,0 +1,45 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <fcntl.h>
+#include "UnixFileWatcher.h"
+
+namespace mozilla {
+namespace ipc {
+
+UnixFileWatcher::~UnixFileWatcher()
+{
+}
+
+nsresult
+UnixFileWatcher::Open(const char* aFilename, int aFlags, mode_t aMode)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+ MOZ_ASSERT(aFlags & O_NONBLOCK);
+
+ int fd = TEMP_FAILURE_RETRY(open(aFilename, aFlags, aMode));
+ if (fd < 0) {
+ OnError("open", errno);
+ return NS_ERROR_FAILURE;
+ }
+ SetFd(fd);
+ OnOpened();
+
+ return NS_OK;
+}
+
+UnixFileWatcher::UnixFileWatcher(MessageLoop* aIOLoop)
+: UnixFdWatcher(aIOLoop)
+{
+}
+
+UnixFileWatcher::UnixFileWatcher(MessageLoop* aIOLoop, int aFd)
+: UnixFdWatcher(aIOLoop, aFd)
+{
+}
+
+}
+}
diff --git a/ipc/unixfd/UnixFileWatcher.h b/ipc/unixfd/UnixFileWatcher.h
new file mode 100644
index 000000000..5a19b1005
--- /dev/null
+++ b/ipc/unixfd/UnixFileWatcher.h
@@ -0,0 +1,33 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_UnixFileWatcher_h
+#define mozilla_ipc_UnixFileWatcher_h
+
+#include "UnixFdWatcher.h"
+
+namespace mozilla {
+namespace ipc {
+
+class UnixFileWatcher : public UnixFdWatcher
+{
+public:
+ virtual ~UnixFileWatcher();
+
+ nsresult Open(const char* aFilename, int aFlags, mode_t aMode = 0);
+
+ // Callback method for successful open requests
+ virtual void OnOpened() {};
+
+protected:
+ UnixFileWatcher(MessageLoop* aIOLoop);
+ UnixFileWatcher(MessageLoop* aIOLoop, int aFd);
+};
+
+}
+}
+
+#endif
diff --git a/ipc/unixfd/UnixSocketWatcher.cpp b/ipc/unixfd/UnixSocketWatcher.cpp
new file mode 100644
index 000000000..2ce32e93d
--- /dev/null
+++ b/ipc/unixfd/UnixSocketWatcher.cpp
@@ -0,0 +1,136 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <fcntl.h>
+#include "UnixSocketWatcher.h"
+
+namespace mozilla {
+namespace ipc {
+
+UnixSocketWatcher::~UnixSocketWatcher()
+{
+}
+
+void UnixSocketWatcher::Close()
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+
+ mConnectionStatus = SOCKET_IS_DISCONNECTED;
+ UnixFdWatcher::Close();
+}
+
+nsresult
+UnixSocketWatcher::Connect(const struct sockaddr* aAddr, socklen_t aAddrLen)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+ MOZ_ASSERT(IsOpen());
+ MOZ_ASSERT(aAddr || !aAddrLen);
+
+ if (TEMP_FAILURE_RETRY(connect(GetFd(), aAddr, aAddrLen) < 0)) {
+ if (errno == EINPROGRESS) {
+ mConnectionStatus = SOCKET_IS_CONNECTING;
+ // Set up a write watch to receive the connect signal
+ AddWatchers(WRITE_WATCHER, false);
+ return NS_OK;
+ }
+ OnError("connect", errno);
+ return NS_ERROR_FAILURE;
+ }
+
+ mConnectionStatus = SOCKET_IS_CONNECTED;
+ OnConnected();
+
+ return NS_OK;
+}
+
+nsresult
+UnixSocketWatcher::Listen(const struct sockaddr* aAddr, socklen_t aAddrLen)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+ MOZ_ASSERT(IsOpen());
+ MOZ_ASSERT(aAddr || !aAddrLen);
+
+ if (mConnectionStatus == SOCKET_IS_DISCONNECTED) {
+ // We init the socket descriptor when we listen for the first time.
+ if (bind(GetFd(), aAddr, aAddrLen) < 0) {
+ OnError("bind", errno);
+ return NS_ERROR_FAILURE;
+ }
+ if (listen(GetFd(), 1) < 0) {
+ OnError("listen", errno);
+ return NS_ERROR_FAILURE;
+ }
+ }
+ mConnectionStatus = SOCKET_IS_LISTENING;
+ OnListening();
+
+ return NS_OK;
+}
+
+UnixSocketWatcher::UnixSocketWatcher(MessageLoop* aIOLoop)
+: UnixFdWatcher(aIOLoop)
+, mConnectionStatus(SOCKET_IS_DISCONNECTED)
+{
+}
+
+UnixSocketWatcher::UnixSocketWatcher(MessageLoop* aIOLoop, int aFd,
+ ConnectionStatus aConnectionStatus)
+: UnixFdWatcher(aIOLoop, aFd)
+, mConnectionStatus(aConnectionStatus)
+{
+}
+
+void
+UnixSocketWatcher::SetSocket(int aFd, ConnectionStatus aConnectionStatus)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+
+ SetFd(aFd);
+ mConnectionStatus = aConnectionStatus;
+}
+
+void
+UnixSocketWatcher::OnFileCanReadWithoutBlocking(int aFd)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+ MOZ_ASSERT(aFd == GetFd());
+
+ if (mConnectionStatus == SOCKET_IS_CONNECTED) {
+ OnSocketCanReceiveWithoutBlocking();
+ } else if (mConnectionStatus == SOCKET_IS_LISTENING) {
+ OnSocketCanAcceptWithoutBlocking();
+ } else {
+ NS_NOTREACHED("invalid connection state for reading");
+ }
+}
+
+void
+UnixSocketWatcher::OnFileCanWriteWithoutBlocking(int aFd)
+{
+ MOZ_ASSERT(MessageLoopForIO::current() == GetIOLoop());
+ MOZ_ASSERT(aFd == GetFd());
+
+ if (mConnectionStatus == SOCKET_IS_CONNECTED) {
+ OnSocketCanSendWithoutBlocking();
+ } else if (mConnectionStatus == SOCKET_IS_CONNECTING) {
+ RemoveWatchers(WRITE_WATCHER);
+ int error = 0;
+ socklen_t len = sizeof(error);
+ if (getsockopt(GetFd(), SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
+ OnError("getsockopt", errno);
+ } else if (error) {
+ OnError("connect", error);
+ } else {
+ mConnectionStatus = SOCKET_IS_CONNECTED;
+ OnConnected();
+ }
+ } else {
+ NS_NOTREACHED("invalid connection state for writing");
+ }
+}
+
+}
+}
diff --git a/ipc/unixfd/UnixSocketWatcher.h b/ipc/unixfd/UnixSocketWatcher.h
new file mode 100644
index 000000000..37a0acc0d
--- /dev/null
+++ b/ipc/unixfd/UnixSocketWatcher.h
@@ -0,0 +1,72 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_UnixSocketWatcher_h
+#define mozilla_ipc_UnixSocketWatcher_h
+
+#include <sys/socket.h>
+#include "UnixFdWatcher.h"
+
+namespace mozilla {
+namespace ipc {
+
+class UnixSocketWatcher : public UnixFdWatcher
+{
+public:
+ enum ConnectionStatus {
+ SOCKET_IS_DISCONNECTED = 0,
+ SOCKET_IS_LISTENING,
+ SOCKET_IS_CONNECTING,
+ SOCKET_IS_CONNECTED
+ };
+
+ virtual ~UnixSocketWatcher();
+
+ virtual void Close() override;
+
+ ConnectionStatus GetConnectionStatus() const
+ {
+ return mConnectionStatus;
+ }
+
+ // Connect to a peer
+ nsresult Connect(const struct sockaddr* aAddr, socklen_t aAddrLen);
+
+ // Listen on socket for incoming connection requests
+ nsresult Listen(const struct sockaddr* aAddr, socklen_t aAddrLen);
+
+ // Callback method for successful connection requests
+ virtual void OnConnected() {};
+
+ // Callback method for successful listen requests
+ virtual void OnListening() {};
+
+ // Callback method for accepting from a listening socket
+ virtual void OnSocketCanAcceptWithoutBlocking() {};
+
+ // Callback method for receiving from socket
+ virtual void OnSocketCanReceiveWithoutBlocking() {};
+
+ // Callback method for sending on socket
+ virtual void OnSocketCanSendWithoutBlocking() {};
+
+protected:
+ UnixSocketWatcher(MessageLoop* aIOLoop);
+ UnixSocketWatcher(MessageLoop* aIOLoop, int aFd,
+ ConnectionStatus aConnectionStatus);
+ void SetSocket(int aFd, ConnectionStatus aConnectionStatus);
+
+private:
+ void OnFileCanReadWithoutBlocking(int aFd) override;
+ void OnFileCanWriteWithoutBlocking(int aFd) override;
+
+ ConnectionStatus mConnectionStatus;
+};
+
+}
+}
+
+#endif
diff --git a/ipc/unixfd/moz.build b/ipc/unixfd/moz.build
new file mode 100644
index 000000000..fdc8a8709
--- /dev/null
+++ b/ipc/unixfd/moz.build
@@ -0,0 +1,21 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+EXPORTS.mozilla.ipc += [
+ 'UnixFdWatcher.h',
+ 'UnixFileWatcher.h',
+ 'UnixSocketWatcher.h'
+]
+
+SOURCES += [
+ 'UnixFdWatcher.cpp',
+ 'UnixFileWatcher.cpp',
+ 'UnixSocketWatcher.cpp'
+]
+
+include('/ipc/chromium/chromium-config.mozbuild')
+
+FINAL_LIBRARY = 'xul'
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 09:48:27 +0000