Make VMCI to work on Windows.

select was improved to support multiple service providers on Windows.
it should be slightly faster because of optimized iteration
over selected sockets.

src/select.hpp

@@ -38,9 +38,10 @@
 
 #include <stddef.h>
 #include <vector>
+#include <map>
 
-#ifdef ZMQ_HAVE_WINDOWS
-#include <winsock2.h>
+#if defined ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
 #elif defined ZMQ_HAVE_OPENVMS
 #include <sys/types.h>
 #include <sys/time.h>
@@ -93,33 +94,65 @@ namespace zmq
         //  Reference to ZMQ context.
         const ctx_t &ctx;
 
+        //  Internal state.
+        struct fds_set_t
+        {
+            fds_set_t ();
+            fds_set_t (const fds_set_t& other_);
+            fds_set_t& operator=(const fds_set_t& other_);
+            //  Convinient method to descriptor from all sets.
+            void remove_fd (const fd_t& fd_);
+
+            fd_set read;
+            fd_set write;
+            fd_set error;
+        };
+
         struct fd_entry_t
         {
             fd_t fd;
-            zmq::i_poll_events *events;
+            zmq::i_poll_events* events;
         };
+        typedef std::vector<fd_entry_t> fd_entries_t;
 
-        //  Checks if an fd_entry_t is retired.
-        static bool is_retired_fd (const fd_entry_t &entry);
+#if defined ZMQ_HAVE_WINDOWS
+        struct family_entry_t
+        {
+            family_entry_t ();
 
-        //  Set of file descriptors that are used to retrieve
-        //  information for fd_set.
-        typedef std::vector <fd_entry_t> fd_set_t;
-        fd_set_t fds;
+            fd_entries_t fd_entries;
+            fds_set_t fds_set;
+            bool retired;
+        };
+        typedef std::map<u_short, family_entry_t> family_entries_t;
 
-        fd_set source_set_in;
-        fd_set source_set_out;
-        fd_set source_set_err;
+        struct wsa_events_t
+        {
+            wsa_events_t ();
+            ~wsa_events_t ();
 
-        fd_set readfds;
-        fd_set writefds;
-        fd_set exceptfds;
+            //  read, write, error and readwrite
+            WSAEVENT events [4];
+        };
+#endif
 
-        //  Maximum file descriptor.
+#if defined ZMQ_HAVE_WINDOWS
+        family_entries_t family_entries;
+        // See loop for details.
+        family_entries_t::iterator current_family_entry_it;
+#else
+        fd_entries_t fd_entries;
+        fds_set_t fds_set;
         fd_t maxfd;
-
-        //  If true, at least one file descriptor has retired.
         bool retired;
+#endif
+
+#if defined ZMQ_HAVE_WINDOWS
+        //  Socket's family or AF_UNSPEC on error.
+        static u_short get_fd_family (fd_t fd_);
+#endif
+        //  Checks if an fd_entry_t is retired.
+        static bool is_retired_fd (const fd_entry_t &entry);
 
         //  If true, thread is shutting down.
         bool stopping;

src/vmci.cpp

@@ -40,7 +40,7 @@ void zmq::tune_vmci_buffer_size (ctx_t *context_, fd_t sockfd_, uint64_t default
     assert (family != -1);
 
     if (default_size_ != 0) {
-        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, &default_size_, sizeof default_size_);
+        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, (char*) &default_size_, sizeof default_size_);
 #if defined ZMQ_HAVE_WINDOWS
         wsa_assert (rc != SOCKET_ERROR);
 #else
@@ -49,7 +49,7 @@ void zmq::tune_vmci_buffer_size (ctx_t *context_, fd_t sockfd_, uint64_t default
     }
 
     if (min_size_ != 0) {
-        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, &min_size_, sizeof min_size_);
+        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, (char*) &min_size_, sizeof min_size_);
 #if defined ZMQ_HAVE_WINDOWS
         wsa_assert (rc != SOCKET_ERROR);
 #else
@@ -58,7 +58,7 @@ void zmq::tune_vmci_buffer_size (ctx_t *context_, fd_t sockfd_, uint64_t default
     }
 
     if (max_size_ != 0) {
-        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, &max_size_, sizeof max_size_);
+        int rc = setsockopt (sockfd_, family, SO_VMCI_BUFFER_SIZE, (char*) &max_size_, sizeof max_size_);
 #if defined ZMQ_HAVE_WINDOWS
         wsa_assert (rc != SOCKET_ERROR);
 #else
@@ -76,7 +76,7 @@ void zmq::tune_vmci_connect_timeout (ctx_t *context_, fd_t sockfd_, struct timev
     int family = context_->get_vmci_socket_family ();
     assert (family != -1);
 
-    int rc = setsockopt (sockfd_, family, SO_VMCI_CONNECT_TIMEOUT, &timeout_, sizeof timeout_);
+    int rc = setsockopt (sockfd_, family, SO_VMCI_CONNECT_TIMEOUT, (char*) &timeout_, sizeof timeout_);
 #if defined ZMQ_HAVE_WINDOWS
     wsa_assert (rc != SOCKET_ERROR);
 #else

src/vmci_connecter.cpp

@@ -32,7 +32,6 @@
 #if defined ZMQ_HAVE_VMCI
 
 #include <new>
-#include <string>
 
 #include "stream_engine.hpp"
 #include "io_thread.hpp"
@@ -118,7 +117,8 @@ void zmq::vmci_connecter_t::out_event ()
         return;
     }
 
-    tune_vmci_buffer_size (this->get_ctx (), fd, options.vmci_buffer_size, options.vmci_buffer_min_size, options.vmci_buffer_max_size);
+    tune_vmci_buffer_size (this->get_ctx (), fd, options.vmci_buffer_size,
+        options.vmci_buffer_min_size, options.vmci_buffer_max_size);
 
     if (options.vmci_connect_timeout > 0)
     {
@@ -218,8 +218,15 @@ int zmq::vmci_connecter_t::open ()
 
     //  Create the socket.
     s = open_socket (family, SOCK_STREAM, 0);
+#ifdef ZMQ_HAVE_WINDOWS
+    if (s == INVALID_SOCKET) {
+        errno = wsa_error_to_errno(WSAGetLastError());
+        return -1;
+    }
+#else
     if (s == -1)
         return -1;
+#endif
 
     //  Set the non-blocking flag.
     unblock_socket (s);
@@ -233,12 +240,18 @@ int zmq::vmci_connecter_t::open ()
     if (rc == 0)
         return 0;
 
-    //  Translate other error codes indicating asynchronous connect has been
+    //  Translate error codes indicating asynchronous connect has been
     //  launched to a uniform EINPROGRESS.
-    if (rc == -1 && errno == EINTR) {
+#ifdef ZMQ_HAVE_WINDOWS
+    const int error_code = WSAGetLastError();
+    if (error_code == WSAEINPROGRESS || error_code == WSAEWOULDBLOCK)
         errno = EINPROGRESS;
-        return -1;
-    }
+    else
+        errno = wsa_error_to_errno(error_code);
+#else
+    if (errno == EINTR)
+        errno = EINPROGRESS;
+#endif
 
     //  Forward the error.
     return -1;
@@ -269,19 +282,45 @@ zmq::fd_t zmq::vmci_connecter_t::connect ()
     socklen_t len = sizeof (err);
 #endif
     int rc = getsockopt (s, SOL_SOCKET, SO_ERROR, (char*) &err, &len);
-    if (rc == -1)
-        err = errno;
-    if (err != 0) {
 
     //  Assert if the error was caused by 0MQ bug.
     //  Networking problems are OK. No need to assert.
+#ifdef ZMQ_HAVE_WINDOWS
+    zmq_assert(rc == 0);
+    if (err != 0) {
+        if (err != WSAECONNREFUSED
+            && err != WSAETIMEDOUT
+            && err != WSAECONNABORTED
+            && err != WSAEHOSTUNREACH
+            && err != WSAENETUNREACH
+            && err != WSAENETDOWN
+            && err != WSAEACCES
+            && err != WSAEINVAL
+            && err != WSAEADDRINUSE
+            && err != WSAECONNRESET)
+        {
+            wsa_assert_no(err);
+        }
+        return retired_fd;
+    }
+#else
+    //  Following code should handle both Berkeley-derived socket
+    //  implementations and Solaris.
+    if (rc == -1)
+        err = errno;
+    if (err != 0) {
         errno = err;
-        errno_assert (errno == ECONNREFUSED || errno == ECONNRESET ||
-            errno == ETIMEDOUT || errno == EHOSTUNREACH ||
-            errno == ENETUNREACH || errno == ENETDOWN);
-
+        errno_assert(
+            errno == ECONNREFUSED ||
+            errno == ECONNRESET ||
+            errno == ETIMEDOUT ||
+            errno == EHOSTUNREACH ||
+            errno == ENETUNREACH ||
+            errno == ENETDOWN ||
+            errno == EINVAL);
         return retired_fd;
     }
+#endif
 
     fd_t result = s;
     s = retired_fd;

src/vmci_connecter.hpp

@@ -27,8 +27,8 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef __VMCI_CONNECTER_HPP_INCLUDED__
-#define __VMCI_CONNECTER_HPP_INCLUDED__
+#ifndef __ZMQ_VMCI_CONNECTER_HPP_INCLUDED__
+#define __ZMQ_VMCI_CONNECTER_HPP_INCLUDED__
 
 #include "platform.hpp"
 

src/vmci_listener.cpp

@@ -33,8 +33,6 @@
 
 #include <new>
 
-#include <string.h>
-
 #include "stream_engine.hpp"
 #include "vmci_address.hpp"
 #include "io_thread.hpp"
@@ -153,20 +151,46 @@ int zmq::vmci_listener_t::set_address (const char *addr_)
 
     //  Create a listening socket.
     s = open_socket (this->get_ctx ()->get_vmci_socket_family (), SOCK_STREAM, 0);
+#ifdef ZMQ_HAVE_WINDOWS
+    if (s == INVALID_SOCKET) {
+        errno = wsa_error_to_errno(WSAGetLastError());
+        return -1;
+    }
+#if !defined _WIN32_WCE
+    //  On Windows, preventing sockets to be inherited by child processes.
+    BOOL brc = SetHandleInformation((HANDLE)s, HANDLE_FLAG_INHERIT, 0);
+    win_assert(brc);
+#endif
+#else
     if (s == -1)
         return -1;
+#endif
 
     address.to_string (endpoint);
 
     //  Bind the socket.
     rc = bind (s, address.addr (), address.addrlen ());
+#ifdef ZMQ_HAVE_WINDOWS
+    if (rc == SOCKET_ERROR) {
+        errno = wsa_error_to_errno(WSAGetLastError());
+        goto error;
+    }
+#else
     if (rc != 0)
         goto error;
+#endif
 
     //  Listen for incoming connections.
     rc = listen (s, options.backlog);
+#ifdef ZMQ_HAVE_WINDOWS
+    if (rc == SOCKET_ERROR) {
+        errno = wsa_error_to_errno(WSAGetLastError());
+        goto error;
+    }
+#else
     if (rc != 0)
         goto error;
+#endif
 
     socket->event_listening (endpoint, s);
     return 0;
@@ -199,12 +223,29 @@ zmq::fd_t zmq::vmci_listener_t::accept ()
     //  resources is considered valid and treated by ignoring the connection.
     zmq_assert (s != retired_fd);
     fd_t sock = ::accept (s, NULL, NULL);
+
+#ifdef ZMQ_HAVE_WINDOWS
+    if (sock == INVALID_SOCKET) {
+        wsa_assert(WSAGetLastError() == WSAEWOULDBLOCK ||
+            WSAGetLastError() == WSAECONNRESET ||
+            WSAGetLastError() == WSAEMFILE ||
+            WSAGetLastError() == WSAENOBUFS);
+        return retired_fd;
+    }
+#if !defined _WIN32_WCE
+    //  On Windows, preventing sockets to be inherited by child processes.
+    BOOL brc = SetHandleInformation((HANDLE)sock, HANDLE_FLAG_INHERIT, 0);
+    win_assert(brc);
+#endif
+#else
     if (sock == -1) {
-        errno_assert (errno == EAGAIN || errno == EWOULDBLOCK ||
+        errno_assert(errno == EAGAIN || errno == EWOULDBLOCK ||
             errno == EINTR || errno == ECONNABORTED || errno == EPROTO ||
+            errno == ENOBUFS || errno == ENOMEM || errno == EMFILE ||
             errno == ENFILE);
         return retired_fd;
     }
+#endif
 
     //  Race condition can cause socket not to be closed (if fork happens
     //  between accept and this point).