Add a new "pseudo" platform for POSIX

src/platform-posix.cc

Index: src/platform-posix.cc
===================================================================
--- src/platform-posix.cc	(revision 0)
+++ src/platform-posix.cc	(revision 0)
@@ -0,0 +1,219 @@
+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Platform specific code for POSIX goes here. This is not a platform on its
+// own but contains the parts which are the same across POSIX platforms Linux,
+// Mac OS and FreeBSD.
+
+#include <unistd.h>
+#include <errno.h>
+
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include "v8.h"
+
+#include "platform.h"
+
+
+namespace v8 { namespace internal {
+
+
+// ----------------------------------------------------------------------------
+// POSIX socket support.
+//
+
+class POSIXSocket : public Socket {
+ public:
+  explicit POSIXSocket() {
+    // Create the socket.
+    socket_ = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+  }
+  explicit POSIXSocket(int socket): socket_(socket) { }
+  virtual ~POSIXSocket() { Shutdown(); }
+
+  // Server initialization.
+  bool Bind(const int port);
+  bool Listen(int backlog) const;
+  Socket* Accept() const;
+
+  // Client initialization.
+  bool Connect(const char* host, const char* port);
+
+  // Shutdown socket for both read and write.
+  bool Shutdown();
+
+  // Data Transimission
+  int Send(const char* data, int len) const;
+  int Receive(char* data, int len) const;
+
+  bool SetReuseAddress(bool reuse_address);
+
+  bool IsValid() const { return socket_ != -1; }
+
+ private:
+  int socket_;
+};
+
+
+bool POSIXSocket::Bind(const int port) {
+  if (!IsValid())  {
+    return false;
+  }
+
+  sockaddr_in addr;
+  memset(&addr, 0, sizeof(addr));
+  addr.sin_family = AF_INET;
+  addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+  addr.sin_port = htons(port);
+  int status = bind(socket_,
+                    reinterpret_cast<struct sockaddr *>(&addr),
+                    sizeof(addr));
+  return status == 0;
+}
+
+
+bool POSIXSocket::Listen(int backlog) const {
+  if (!IsValid()) {
+    return false;
+  }
+
+  int status = listen(socket_, backlog);
+  return status == 0;
+}
+
+
+Socket* POSIXSocket::Accept() const {
+  if (!IsValid()) {
+    return NULL;
+  }
+
+  int socket = accept(socket_, NULL, NULL);
+  if (socket == -1) {
+    return NULL;
+  } else {
+    return new POSIXSocket(socket);
+  }
+}
+
+
+bool POSIXSocket::Connect(const char* host, const char* port) {
+  if (!IsValid()) {
+    return false;
+  }
+
+  // Lookup host and port.
+  struct addrinfo *result = NULL;
+  struct addrinfo hints;
+  memset(&hints, 0, sizeof(addrinfo));
+  hints.ai_family = AF_INET;
+  hints.ai_socktype = SOCK_STREAM;
+  hints.ai_protocol = IPPROTO_TCP;
+  int status = getaddrinfo(host, port, &hints, &result);
+  if (status != 0) {
+    return false;
+  }
+
+  // Connect.
+  status = connect(socket_, result->ai_addr, result->ai_addrlen);
+  freeaddrinfo(result);
+  return status == 0;
+}
+
+
+bool POSIXSocket::Shutdown() {
+  if (IsValid()) {
+    // Shutdown socket for both read and write.
+    int status = shutdown(socket_, SHUT_RDWR);
+    close(socket_);
+    socket_ = -1;
+    return status == 0;
+  }
+  return true;
+}
+
+
+int POSIXSocket::Send(const char* data, int len) const {
+  int status = send(socket_, data, len, 0);
+  return status;
+}
+
+
+int POSIXSocket::Receive(char* data, int len) const {
+  int status = recv(socket_, data, len, 0);
+  return status;
+}
+
+
+bool POSIXSocket::SetReuseAddress(bool reuse_address) {
+  int on = reuse_address ? 1 : 0;
+  int status = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+  return status == 0;
+}
+
+
+bool Socket::Setup() {
+  // Nothing to do on POSIX.
+  return true;
+}
+
+
+int Socket::LastError() {
+  return errno;
+}
+
+
+uint16_t Socket::HToN(uint16_t value) {
+  return htons(value);
+}
+
+
+uint16_t Socket::NToH(uint16_t value) {
+  return ntohs(value);
+}
+
+
+uint32_t Socket::HToN(uint32_t value) {
+  return htonl(value);
+}
+
+
+uint32_t Socket::NToH(uint32_t value) {
+  return ntohl(value);
+}
+
+
+Socket* OS::CreateSocket() {
+  return new POSIXSocket();
+}
+
+
+} }  // namespace v8::internal