int zmq::socket_base_t::setsockopt (int option_, const void *optval_,
size_t optvallen_)
{
ENTER_MUTEX();
if (!options.is_valid(option_)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// First, check whether specific socket type overloads the option.
int rc = xsetsockopt (option_, optval_, optvallen_);
if (rc == 0 || errno != EINVAL) {
EXIT_MUTEX();
return rc;
}
// If the socket type doesn't support the option, pass it to
// the generic option parser.
rc = options.setsockopt (option_, optval_, optvallen_);
update_pipe_options(option_);
EXIT_MUTEX();
return rc;
}
void zmq::socket_base_t::start_reaping (poller_t *poller_)
{
// Plug the socket to the reaper thread.
poller = poller_;
fd_t fd;
if (!thread_safe)
fd = ((mailbox_t*)mailbox)->get_fd();
else {
ENTER_MUTEX();
reaper_signaler = new signaler_t();
// Add signaler to the safe mailbox
fd = reaper_signaler->get_fd();
((mailbox_safe_t*)mailbox)->add_signaler(reaper_signaler);
// Send a signal to make sure reaper handle existing commands
reaper_signaler->send();
EXIT_MUTEX();
}
handle = poller->add_fd (fd, this);
poller->set_pollin (handle);
// Initialise the termination and check whether it can be deallocated
// immediately.
terminate ();
check_destroy ();
}
NTSTATUS
NpfsServerWriteFile(
PNPFS_CCB pSCB,
PNPFS_IRP_CONTEXT pIrpContext
)
{
NTSTATUS ntStatus = 0;
PNPFS_PIPE pPipe = NULL;
pPipe = pSCB->pPipe;
ENTER_MUTEX(&pPipe->PipeMutex);
switch(pPipe->PipeClientState)
{
case PIPE_CLIENT_CONNECTED:
ntStatus = NpfsServerWriteFile_Connected(pSCB, pIrpContext);
pthread_cond_signal(&pPipe->PipeCondition);
BAIL_ON_NT_STATUS(ntStatus);
break;
case PIPE_CLIENT_INIT_STATE:
case PIPE_CLIENT_CLOSED:
ntStatus = STATUS_PIPE_DISCONNECTED;
BAIL_ON_NT_STATUS(ntStatus);
break;
}
error:
pIrpContext->pIrp->IoStatusBlock.Status = ntStatus;
LEAVE_MUTEX(&pPipe->PipeMutex);
return ntStatus;
}
int zmq::socket_base_t::leave (const char* group_)
{
ENTER_MUTEX ();
int rc = xleave (group_);
EXIT_MUTEX();
return rc;
}
int zmq::socket_base_t::remove_signaler(signaler_t *s_)
{
ENTER_MUTEX();
if (!thread_safe) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
((mailbox_safe_t*)mailbox)->remove_signaler(s_);
EXIT_MUTEX();
return 0;
}
void zmq::socket_base_t::in_event ()
{
// This function is invoked only once the socket is running in the context
// of the reaper thread. Process any commands from other threads/sockets
// that may be available at the moment. Ultimately, the socket will
// be destroyed.
ENTER_MUTEX ();
// If the socket is thread safe we need to unsignal the reaper signaler
if (thread_safe)
reaper_signaler->recv();
process_commands (0, false);
EXIT_MUTEX ();
check_destroy ();
}
NTSTATUS
NpfsClientCloseHandle(
PNPFS_CCB pCCB
)
{
NTSTATUS ntStatus = 0;
PNPFS_PIPE pPipe = NULL;
PNPFS_CCB pSCB = NULL;
PLW_LIST_LINKS pLink = NULL;
PNPFS_IRP_CONTEXT pReadContext = NULL;
pPipe = pCCB->pPipe;
ENTER_MUTEX(&pPipe->PipeMutex);
pSCB = pPipe->pSCB;
pPipe->PipeClientState = PIPE_CLIENT_CLOSED;
while (pSCB && !LwListIsEmpty(&pSCB->ReadIrpList))
{
pLink = pSCB->ReadIrpList.Next;
LwListRemove(pLink);
pReadContext = LW_STRUCT_FROM_FIELD(pLink, NPFS_IRP_CONTEXT, Link);
NpfsServerCompleteReadFile(pSCB, pReadContext);
}
pthread_cond_signal(&pPipe->PipeCondition);
if (pPipe->PipeServerState == PIPE_SERVER_CLOSED)
{
ntStatus = NpfsFreePipeContext(pPipe);
BAIL_ON_NT_STATUS(ntStatus);
}
error:
pPipe->pCCB = NULL;
LEAVE_MUTEX(&pPipe->PipeMutex);
NpfsReleaseCCB(pCCB);
return(ntStatus);
}
int zmq::socket_base_t::send (msg_t *msg_, int flags_)
{
ENTER_MUTEX();
// Check whether the library haven't been shut down yet.
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// Check whether message passed to the function is valid.
if (unlikely (!msg_ || !msg_->check ())) {
errno = EFAULT;
EXIT_MUTEX();
return -1;
}
// Process pending commands, if any.
int rc = process_commands (0, true);
if (unlikely (rc != 0)) {
EXIT_MUTEX();
return -1;
}
// Clear any user-visible flags that are set on the message.
msg_->reset_flags (msg_t::more);
// At this point we impose the flags on the message.
if (flags_ & ZMQ_SNDMORE)
msg_->set_flags (msg_t::more);
msg_->reset_metadata ();
// Try to send the message.
rc = xsend (msg_);
if (rc == 0) {
EXIT_MUTEX();
return 0;
}
if (unlikely (errno != EAGAIN)) {
EXIT_MUTEX();
return -1;
}
// In case of non-blocking send we'll simply propagate
// the error - including EAGAIN - up the stack.
if (flags_ & ZMQ_DONTWAIT || options.sndtimeo == 0) {
EXIT_MUTEX();
return -1;
}
// Compute the time when the timeout should occur.
// If the timeout is infinite, don't care.
int timeout = options.sndtimeo;
uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
// Oops, we couldn't send the message. Wait for the next
// command, process it and try to send the message again.
// If timeout is reached in the meantime, return EAGAIN.
while (true) {
if (unlikely (process_commands (timeout, false) != 0)) {
EXIT_MUTEX();
return -1;
}
rc = xsend (msg_);
if (rc == 0)
break;
if (unlikely (errno != EAGAIN)) {
EXIT_MUTEX();
return -1;
}
if (timeout > 0) {
timeout = (int) (end - clock.now_ms ());
if (timeout <= 0) {
errno = EAGAIN;
EXIT_MUTEX();
return -1;
}
}
}
EXIT_MUTEX();
return 0;
}
int zmq::socket_base_t::term_endpoint (const char *addr_)
{
ENTER_MUTEX();
// Check whether the library haven't been shut down yet.
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// Check whether endpoint address passed to the function is valid.
if (unlikely (!addr_)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
// Process pending commands, if any, since there could be pending unprocessed process_own()'s
// (from launch_child() for example) we're asked to terminate now.
int rc = process_commands (0, false);
if (unlikely(rc != 0)) {
EXIT_MUTEX();
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
if (parse_uri(addr_, protocol, address) || check_protocol(protocol)) {
EXIT_MUTEX();
return -1;
}
// Disconnect an inproc socket
if (protocol == "inproc") {
if (unregister_endpoint (std::string(addr_), this) == 0) {
EXIT_MUTEX();
return 0;
}
std::pair <inprocs_t::iterator, inprocs_t::iterator> range = inprocs.equal_range (std::string (addr_));
if (range.first == range.second) {
errno = ENOENT;
EXIT_MUTEX();
return -1;
}
for (inprocs_t::iterator it = range.first; it != range.second; ++it)
it->second->terminate (true);
inprocs.erase (range.first, range.second);
EXIT_MUTEX();
return 0;
}
// Find the endpoints range (if any) corresponding to the addr_ string.
std::pair <endpoints_t::iterator, endpoints_t::iterator> range = endpoints.equal_range (std::string (addr_));
if (range.first == range.second) {
errno = ENOENT;
EXIT_MUTEX();
return -1;
}
for (endpoints_t::iterator it = range.first; it != range.second; ++it) {
// If we have an associated pipe, terminate it.
if (it->second.second != NULL)
it->second.second->terminate (false);
term_child (it->second.first);
}
endpoints.erase (range.first, range.second);
EXIT_MUTEX();
return 0;
}
int zmq::socket_base_t::connect (const char *addr_)
{
ENTER_MUTEX();
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// Process pending commands, if any.
int rc = process_commands (0, false);
if (unlikely (rc != 0)) {
EXIT_MUTEX();
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
if (parse_uri (addr_, protocol, address) || check_protocol (protocol)) {
EXIT_MUTEX();
return -1;
}
if (protocol == "inproc") {
// TODO: inproc connect is specific with respect to creating pipes
// as there's no 'reconnect' functionality implemented. Once that
// is in place we should follow generic pipe creation algorithm.
// Find the peer endpoint.
endpoint_t peer = find_endpoint (addr_);
// The total HWM for an inproc connection should be the sum of
// the binder's HWM and the connector's HWM.
int sndhwm = 0;
if (peer.socket == NULL)
sndhwm = options.sndhwm;
else if (options.sndhwm != 0 && peer.options.rcvhwm != 0)
sndhwm = options.sndhwm + peer.options.rcvhwm;
int rcvhwm = 0;
if (peer.socket == NULL)
rcvhwm = options.rcvhwm;
else
if (options.rcvhwm != 0 && peer.options.sndhwm != 0)
rcvhwm = options.rcvhwm + peer.options.sndhwm;
// Create a bi-directional pipe to connect the peers.
object_t *parents [2] = {this, peer.socket == NULL ? this : peer.socket};
pipe_t *new_pipes [2] = {NULL, NULL};
bool conflate = options.conflate &&
(options.type == ZMQ_DEALER ||
options.type == ZMQ_PULL ||
options.type == ZMQ_PUSH ||
options.type == ZMQ_PUB ||
options.type == ZMQ_SUB);
int hwms [2] = {conflate? -1 : sndhwm, conflate? -1 : rcvhwm};
bool conflates [2] = {conflate, conflate};
int rc = pipepair (parents, new_pipes, hwms, conflates);
if (!conflate) {
new_pipes[0]->set_hwms_boost(peer.options.sndhwm, peer.options.rcvhwm);
new_pipes[1]->set_hwms_boost(options.sndhwm, options.rcvhwm);
}
errno_assert (rc == 0);
if (!peer.socket) {
// The peer doesn't exist yet so we don't know whether
// to send the identity message or not. To resolve this,
// we always send our identity and drop it later if
// the peer doesn't expect it.
msg_t id;
rc = id.init_size (options.identity_size);
errno_assert (rc == 0);
memcpy (id.data (), options.identity, options.identity_size);
id.set_flags (msg_t::identity);
bool written = new_pipes [0]->write (&id);
zmq_assert (written);
new_pipes [0]->flush ();
const endpoint_t endpoint = {this, options};
pend_connection (std::string (addr_), endpoint, new_pipes);
}
else {
// If required, send the identity of the local socket to the peer.
if (peer.options.recv_identity) {
msg_t id;
rc = id.init_size (options.identity_size);
errno_assert (rc == 0);
memcpy (id.data (), options.identity, options.identity_size);
id.set_flags (msg_t::identity);
bool written = new_pipes [0]->write (&id);
zmq_assert (written);
new_pipes [0]->flush ();
}
// If required, send the identity of the peer to the local socket.
if (options.recv_identity) {
msg_t id;
rc = id.init_size (peer.options.identity_size);
errno_assert (rc == 0);
memcpy (id.data (), peer.options.identity, peer.options.identity_size);
id.set_flags (msg_t::identity);
bool written = new_pipes [1]->write (&id);
zmq_assert (written);
new_pipes [1]->flush ();
}
// Attach remote end of the pipe to the peer socket. Note that peer's
// seqnum was incremented in find_endpoint function. We don't need it
// increased here.
send_bind (peer.socket, new_pipes [1], false);
}
// Attach local end of the pipe to this socket object.
attach_pipe (new_pipes [0]);
// Save last endpoint URI
last_endpoint.assign (addr_);
// remember inproc connections for disconnect
inprocs.insert (inprocs_t::value_type (std::string (addr_), new_pipes [0]));
options.connected = true;
EXIT_MUTEX();
return 0;
}
bool is_single_connect = (options.type == ZMQ_DEALER ||
options.type == ZMQ_SUB ||
options.type == ZMQ_REQ);
if (unlikely (is_single_connect)) {
const endpoints_t::iterator it = endpoints.find (addr_);
if (it != endpoints.end ()) {
// There is no valid use for multiple connects for SUB-PUB nor
// DEALER-ROUTER nor REQ-REP. Multiple connects produces
// nonsensical results.
EXIT_MUTEX();
return 0;
}
}
// Choose the I/O thread to run the session in.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
EXIT_MUTEX();
return -1;
}
address_t *paddr = new (std::nothrow) address_t (protocol, address);
alloc_assert (paddr);
// Resolve address (if needed by the protocol)
if (protocol == "tcp") {
// Do some basic sanity checks on tcp:// address syntax
// - hostname starts with digit or letter, with embedded '-' or '.'
// - IPv6 address may contain hex chars and colons.
// - IPv4 address may contain decimal digits and dots.
// - Address must end in ":port" where port is *, or numeric
// - Address may contain two parts separated by ':'
// Following code is quick and dirty check to catch obvious errors,
// without trying to be fully accurate.
const char *check = address.c_str ();
if (isalnum (*check) || isxdigit (*check) || *check == '[') {
check++;
while (isalnum (*check)
|| isxdigit (*check)
|| *check == '.' || *check == '-' || *check == ':'|| *check == ';'
|| *check == ']')
check++;
}
// Assume the worst, now look for success
rc = -1;
// Did we reach the end of the address safely?
if (*check == 0) {
// Do we have a valid port string? (cannot be '*' in connect
check = strrchr (address.c_str (), ':');
if (check) {
check++;
if (*check && (isdigit (*check)))
rc = 0; // Valid
}
}
if (rc == -1) {
errno = EINVAL;
LIBZMQ_DELETE(paddr);
EXIT_MUTEX();
return -1;
}
// Defer resolution until a socket is opened
paddr->resolved.tcp_addr = NULL;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
else
if (protocol == "ipc") {
paddr->resolved.ipc_addr = new (std::nothrow) ipc_address_t ();
alloc_assert (paddr->resolved.ipc_addr);
int rc = paddr->resolved.ipc_addr->resolve (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(paddr);
EXIT_MUTEX();
return -1;
}
}
#endif
// TBD - Should we check address for ZMQ_HAVE_NORM???
#ifdef ZMQ_HAVE_OPENPGM
if (protocol == "pgm" || protocol == "epgm") {
struct pgm_addrinfo_t *res = NULL;
uint16_t port_number = 0;
int rc = pgm_socket_t::init_address(address.c_str(), &res, &port_number);
if (res != NULL)
pgm_freeaddrinfo (res);
if (rc != 0 || port_number == 0) {
EXIT_MUTEX();
return -1;
}
}
#endif
#if defined ZMQ_HAVE_TIPC
else
if (protocol == "tipc") {
paddr->resolved.tipc_addr = new (std::nothrow) tipc_address_t ();
alloc_assert (paddr->resolved.tipc_addr);
int rc = paddr->resolved.tipc_addr->resolve (address.c_str());
if (rc != 0) {
LIBZMQ_DELETE(paddr);
EXIT_MUTEX();
return -1;
}
}
#endif
// Create session.
session_base_t *session = session_base_t::create (io_thread, true, this,
options, paddr);
errno_assert (session);
// PGM does not support subscription forwarding; ask for all data to be
// sent to this pipe. (same for NORM, currently?)
bool subscribe_to_all = protocol == "pgm" || protocol == "epgm" || protocol == "norm";
pipe_t *newpipe = NULL;
if (options.immediate != 1 || subscribe_to_all) {
// Create a bi-directional pipe.
object_t *parents [2] = {this, session};
pipe_t *new_pipes [2] = {NULL, NULL};
bool conflate = options.conflate &&
(options.type == ZMQ_DEALER ||
options.type == ZMQ_PULL ||
options.type == ZMQ_PUSH ||
options.type == ZMQ_PUB ||
options.type == ZMQ_SUB);
int hwms [2] = {conflate? -1 : options.sndhwm,
conflate? -1 : options.rcvhwm};
bool conflates [2] = {conflate, conflate};
rc = pipepair (parents, new_pipes, hwms, conflates);
errno_assert (rc == 0);
// Attach local end of the pipe to the socket object.
attach_pipe (new_pipes [0], subscribe_to_all);
newpipe = new_pipes [0];
// Attach remote end of the pipe to the session object later on.
session->attach_pipe (new_pipes [1]);
}
// Save last endpoint URI
paddr->to_string (last_endpoint);
add_endpoint (addr_, (own_t *) session, newpipe);
EXIT_MUTEX();
return 0;
}
int zmq::socket_base_t::bind (const char *addr_)
{
ENTER_MUTEX();
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// Process pending commands, if any.
int rc = process_commands (0, false);
if (unlikely (rc != 0)) {
EXIT_MUTEX();
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
if (parse_uri (addr_, protocol, address) || check_protocol (protocol)) {
EXIT_MUTEX();
return -1;
}
if (protocol == "inproc") {
const endpoint_t endpoint = { this, options };
const int rc = register_endpoint (addr_, endpoint);
if (rc == 0) {
connect_pending (addr_, this);
last_endpoint.assign (addr_);
options.connected = true;
}
EXIT_MUTEX();
return rc;
}
if (protocol == "pgm" || protocol == "epgm" || protocol == "norm") {
// For convenience's sake, bind can be used interchangeable with
// connect for PGM, EPGM and NORM transports.
EXIT_MUTEX();
rc = connect (addr_);
if (rc != -1)
options.connected = true;
return rc;
}
// Remaining transports require to be run in an I/O thread, so at this
// point we'll choose one.
io_thread_t *io_thread = choose_io_thread (options.affinity);
if (!io_thread) {
errno = EMTHREAD;
EXIT_MUTEX();
return -1;
}
if (protocol == "tcp") {
tcp_listener_t *listener = new (std::nothrow) tcp_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
EXIT_MUTEX();
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
options.connected = true;
EXIT_MUTEX();
return 0;
}
#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
if (protocol == "ipc") {
ipc_listener_t *listener = new (std::nothrow) ipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
EXIT_MUTEX();
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
options.connected = true;
EXIT_MUTEX();
return 0;
}
#endif
#if defined ZMQ_HAVE_TIPC
if (protocol == "tipc") {
tipc_listener_t *listener = new (std::nothrow) tipc_listener_t (
io_thread, this, options);
alloc_assert (listener);
int rc = listener->set_address (address.c_str ());
if (rc != 0) {
LIBZMQ_DELETE(listener);
event_bind_failed (address, zmq_errno());
EXIT_MUTEX();
return -1;
}
// Save last endpoint URI
listener->get_address (last_endpoint);
add_endpoint (addr_, (own_t *) listener, NULL);
options.connected = true;
EXIT_MUTEX();
return 0;
}
#endif
EXIT_MUTEX();
zmq_assert (false);
return -1;
}
int zmq::socket_base_t::getsockopt (int option_, void *optval_,
size_t *optvallen_)
{
ENTER_MUTEX();
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
if (option_ == ZMQ_RCVMORE) {
if (*optvallen_ < sizeof (int)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
memset(optval_, 0, *optvallen_);
*((int*) optval_) = rcvmore ? 1 : 0;
*optvallen_ = sizeof (int);
EXIT_MUTEX();
return 0;
}
if (option_ == ZMQ_FD) {
if (*optvallen_ < sizeof (fd_t)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
if (thread_safe) {
// thread safe socket doesn't provide file descriptor
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
*((fd_t*)optval_) = ((mailbox_t*)mailbox)->get_fd();
*optvallen_ = sizeof(fd_t);
EXIT_MUTEX();
return 0;
}
if (option_ == ZMQ_EVENTS) {
if (*optvallen_ < sizeof (int)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
int rc = process_commands (0, false);
if (rc != 0 && (errno == EINTR || errno == ETERM)) {
EXIT_MUTEX();
return -1;
}
errno_assert (rc == 0);
*((int*) optval_) = 0;
if (has_out ())
*((int*) optval_) |= ZMQ_POLLOUT;
if (has_in ())
*((int*) optval_) |= ZMQ_POLLIN;
*optvallen_ = sizeof (int);
EXIT_MUTEX();
return 0;
}
if (option_ == ZMQ_LAST_ENDPOINT) {
if (*optvallen_ < last_endpoint.size () + 1) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
strcpy (static_cast <char *> (optval_), last_endpoint.c_str ());
*optvallen_ = last_endpoint.size () + 1;
EXIT_MUTEX();
return 0;
}
if (option_ == ZMQ_THREAD_SAFE) {
if (*optvallen_ < sizeof (int)) {
errno = EINVAL;
EXIT_MUTEX();
return -1;
}
memset(optval_, 0, *optvallen_);
*((int*) optval_) = thread_safe ? 1 : 0;
*optvallen_ = sizeof (int);
EXIT_MUTEX();
return 0;
}
int rc = options.getsockopt (option_, optval_, optvallen_);
EXIT_MUTEX();
return rc;
}
void zmq::socket_base_t::flush_commands ()
{
ENTER_MUTEX();
process_commands (0, false);
EXIT_MUTEX();
}
int zmq::socket_base_t::recv (msg_t *msg_, int flags_)
{
ENTER_MUTEX();
// Check whether the library haven't been shut down yet.
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX();
return -1;
}
// Check whether message passed to the function is valid.
if (unlikely (!msg_ || !msg_->check ())) {
errno = EFAULT;
EXIT_MUTEX();
return -1;
}
// Once every inbound_poll_rate messages check for signals and process
// incoming commands. This happens only if we are not polling altogether
// because there are messages available all the time. If poll occurs,
// ticks is set to zero and thus we avoid this code.
//
// Note that 'recv' uses different command throttling algorithm (the one
// described above) from the one used by 'send'. This is because counting
// ticks is more efficient than doing RDTSC all the time.
if (++ticks == inbound_poll_rate) {
if (unlikely (process_commands (0, false) != 0)) {
EXIT_MUTEX();
return -1;
}
ticks = 0;
}
// Get the message.
int rc = xrecv (msg_);
if (unlikely (rc != 0 && errno != EAGAIN)) {
EXIT_MUTEX();
return -1;
}
// If we have the message, return immediately.
if (rc == 0) {
if (file_desc != retired_fd)
msg_->set_fd(file_desc);
extract_flags (msg_);
EXIT_MUTEX();
return 0;
}
// If the message cannot be fetched immediately, there are two scenarios.
// For non-blocking recv, commands are processed in case there's an
// activate_reader command already waiting int a command pipe.
// If it's not, return EAGAIN.
if (flags_ & ZMQ_DONTWAIT || options.rcvtimeo == 0) {
if (unlikely (process_commands (0, false) != 0)) {
EXIT_MUTEX();
return -1;
}
ticks = 0;
rc = xrecv (msg_);
if (rc < 0) {
EXIT_MUTEX();
return rc;
}
if (file_desc != retired_fd)
msg_->set_fd(file_desc);
extract_flags (msg_);
EXIT_MUTEX();
return 0;
}
// Compute the time when the timeout should occur.
// If the timeout is infinite, don't care.
int timeout = options.rcvtimeo;
uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
// In blocking scenario, commands are processed over and over again until
// we are able to fetch a message.
bool block = (ticks != 0);
while (true) {
if (unlikely (process_commands (block ? timeout : 0, false) != 0)) {
EXIT_MUTEX();
return -1;
}
rc = xrecv (msg_);
if (rc == 0) {
ticks = 0;
break;
}
if (unlikely (errno != EAGAIN)) {
EXIT_MUTEX();
return -1;
}
block = true;
if (timeout > 0) {
timeout = (int) (end - clock.now_ms ());
if (timeout <= 0) {
errno = EAGAIN;
EXIT_MUTEX();
return -1;
}
}
}
if (file_desc != retired_fd)
msg_->set_fd(file_desc);
extract_flags (msg_);
EXIT_MUTEX();
return 0;
}
NTSTATUS
NpfsCommonCreate(
PNPFS_IRP_CONTEXT pIrpContext,
PIRP pIrp
)
{
NTSTATUS ntStatus = 0;
PUNICODE_STRING pPipeName = &pIrpContext->pIrp->Args.Create.FileName.Name;
PNPFS_FCB pFCB = NULL;
PNPFS_PIPE pPipe = NULL;
PNPFS_CCB pCCB = NULL;
BOOLEAN bReleaseLock = FALSE;
PNPFS_IRP_CONTEXT pConnectContext = NULL;
ntStatus = NpfsValidateCreate(pIrpContext);
BAIL_ON_NT_STATUS(ntStatus);
ENTER_READER_RW_LOCK(&gServerLock);
ntStatus = NpfsFindFCB(pPipeName, &pFCB);
LEAVE_READER_RW_LOCK(&gServerLock);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = NpfsFindAvailablePipe(pFCB, &pPipe);
BAIL_ON_NT_STATUS(ntStatus);
ENTER_MUTEX(&pPipe->PipeMutex);
bReleaseLock = TRUE;
if (pPipe->PipeServerState != PIPE_SERVER_WAITING_FOR_CONNECTION)
{
ntStatus = STATUS_INVALID_SERVER_STATE;
BAIL_ON_NT_STATUS(ntStatus);
}
ntStatus = NpfsCreateCCB(pIrpContext, pPipe, &pCCB);
BAIL_ON_NT_STATUS(ntStatus);
pPipe->PipeClientState = PIPE_CLIENT_CONNECTED;
pPipe->pClientAccessToken = IoSecurityGetAccessToken(pIrp->Args.Create.SecurityContext);
RtlReferenceAccessToken(pPipe->pClientAccessToken);
ntStatus = NpfsCommonProcessCreateEcp(pIrpContext, pIrp, pCCB);
BAIL_ON_NT_STATUS(ntStatus);
/* Wake up blocking pipe waiters */
pthread_cond_signal(&pPipe->PipeCondition);
/* If there is a pending connect IRP, grab it
to complete once we leave the pipe mutex */
if (pPipe->pPendingServerConnect)
{
pConnectContext = pPipe->pPendingServerConnect;
pPipe->pPendingServerConnect = NULL;
pPipe->PipeServerState = PIPE_SERVER_CONNECTED;
}
LEAVE_MUTEX(&pPipe->PipeMutex);
bReleaseLock = FALSE;
if (pConnectContext)
{
pConnectContext->pIrp->IoStatusBlock.Status = STATUS_SUCCESS;
IoIrpComplete(pConnectContext->pIrp);
IO_FREE(&pConnectContext);
}
ntStatus = NpfsSetCCB(pIrpContext->pIrp->FileHandle, pCCB);
BAIL_ON_NT_STATUS(ntStatus);
pIrpContext->pIrp->IoStatusBlock.CreateResult = FILE_OPENED;
cleanup:
if (bReleaseLock)
{
LEAVE_MUTEX(&pPipe->PipeMutex);
}
if (pFCB)
{
NpfsReleaseFCB(pFCB);
}
if (pPipe)
{
NpfsReleasePipe(pPipe);
}
if (pCCB)
{
NpfsReleaseCCB(pCCB);
}
pIrpContext->pIrp->IoStatusBlock.Status = ntStatus;
return ntStatus;
error:
pIrpContext->pIrp->IoStatusBlock.CreateResult = FILE_DOES_NOT_EXIST;
goto cleanup;
}
int zmq::socket_base_t::term_endpoint (const char *addr_)
{
ENTER_MUTEX ();
// Check whether the library haven't been shut down yet.
if (unlikely (ctx_terminated)) {
errno = ETERM;
EXIT_MUTEX ();
return -1;
}
// Check whether endpoint address passed to the function is valid.
if (unlikely (!addr_)) {
errno = EINVAL;
EXIT_MUTEX ();
return -1;
}
// Process pending commands, if any, since there could be pending unprocessed process_own()'s
// (from launch_child() for example) we're asked to terminate now.
int rc = process_commands (0, false);
if (unlikely(rc != 0)) {
EXIT_MUTEX ();
return -1;
}
// Parse addr_ string.
std::string protocol;
std::string address;
if (parse_uri(addr_, protocol, address) || check_protocol(protocol)) {
EXIT_MUTEX ();
return -1;
}
// Disconnect an inproc socket
if (protocol == "inproc") {
if (unregister_endpoint (std::string(addr_), this) == 0) {
EXIT_MUTEX ();
return 0;
}
std::pair <inprocs_t::iterator, inprocs_t::iterator> range = inprocs.equal_range (std::string (addr_));
if (range.first == range.second) {
errno = ENOENT;
EXIT_MUTEX ();
return -1;
}
for (inprocs_t::iterator it = range.first; it != range.second; ++it)
it->second->terminate (true);
inprocs.erase (range.first, range.second);
EXIT_MUTEX ();
return 0;
}
std::string resolved_addr = std::string (addr_);
std::pair <endpoints_t::iterator, endpoints_t::iterator> range;
// The resolved last_endpoint is used as a key in the endpoints map.
// The address passed by the user might not match in the TCP case due to
// IPv4-in-IPv6 mapping (EG: tcp://[::ffff:127.0.0.1]:9999), so try to
// resolve before giving up. Given at this stage we don't know whether a
// socket is connected or bound, try with both.
if (protocol == "tcp") {
range = endpoints.equal_range (resolved_addr);
if (range.first == range.second) {
tcp_address_t *tcp_addr = new (std::nothrow) tcp_address_t ();
alloc_assert (tcp_addr);
rc = tcp_addr->resolve (address.c_str (), false, options.ipv6);
if (rc == 0) {
tcp_addr->to_string (resolved_addr);
range = endpoints.equal_range (resolved_addr);
if (range.first == range.second) {
rc = tcp_addr->resolve (address.c_str (), true, options.ipv6);
if (rc == 0) {
tcp_addr->to_string (resolved_addr);
}
}
}
LIBZMQ_DELETE(tcp_addr);
}
}
// Find the endpoints range (if any) corresponding to the addr_ string.
range = endpoints.equal_range (resolved_addr);
if (range.first == range.second) {
errno = ENOENT;
EXIT_MUTEX ();
return -1;
}
for (endpoints_t::iterator it = range.first; it != range.second; ++it) {
// If we have an associated pipe, terminate it.
if (it->second.second != NULL)
it->second.second->terminate (false);
term_child (it->second.first);
}
endpoints.erase (range.first, range.second);
EXIT_MUTEX ();
return 0;
}
