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-rw-r--r--src/app_thread.cpp4
-rw-r--r--src/dispatcher.cpp36
-rw-r--r--src/dispatcher.hpp25
-rw-r--r--src/object.cpp5
-rw-r--r--src/object.hpp1
-rw-r--r--src/session.cpp7
-rw-r--r--src/socket_base.cpp12
-rw-r--r--src/zmq.cpp3
8 files changed, 82 insertions, 11 deletions
diff --git a/src/app_thread.cpp b/src/app_thread.cpp
index e108594..58fe19d 100644
--- a/src/app_thread.cpp
+++ b/src/app_thread.cpp
@@ -51,9 +51,7 @@ zmq::app_thread_t::app_thread_t (dispatcher_t *dispatcher_, int thread_slot_) :
zmq::app_thread_t::~app_thread_t ()
{
- // Destroy all the sockets owned by this application thread.
- for (sockets_t::iterator it = sockets.begin (); it != sockets.end (); it ++)
- delete *it;
+ zmq_assert (sockets.empty ());
}
zmq::i_signaler *zmq::app_thread_t::get_signaler ()
diff --git a/src/dispatcher.cpp b/src/dispatcher.cpp
index 71e20df..49c2197 100644
--- a/src/dispatcher.cpp
+++ b/src/dispatcher.cpp
@@ -30,7 +30,9 @@
#include "windows.h"
#endif
-zmq::dispatcher_t::dispatcher_t (int app_threads_, int io_threads_)
+zmq::dispatcher_t::dispatcher_t (int app_threads_, int io_threads_) :
+ sockets (0),
+ terminated (false)
{
#ifdef ZMQ_HAVE_WINDOWS
// Intialise Windows sockets. Note that WSAStartup can be called multiple
@@ -68,6 +70,20 @@ zmq::dispatcher_t::dispatcher_t (int app_threads_, int io_threads_)
io_threads [i]->start ();
}
+int zmq::dispatcher_t::term ()
+{
+ term_sync.lock ();
+ zmq_assert (!terminated);
+ terminated = true;
+ bool destroy = (sockets == 0);
+ term_sync.unlock ();
+
+ if (destroy)
+ delete this;
+
+ return 0;
+}
+
zmq::dispatcher_t::~dispatcher_t ()
{
// Close all application theads, sockets, io_objects etc.
@@ -111,9 +127,27 @@ zmq::socket_base_t *zmq::dispatcher_t::create_socket (int type_)
}
threads_sync.unlock ();
+ term_sync.lock ();
+ sockets++;
+ term_sync.unlock ();
+
return thread->create_socket (type_);
}
+void zmq::dispatcher_t::destroy_socket ()
+{
+ // If zmq_term was already called and there are no more sockets,
+ // terminate the whole 0MQ infrastructure.
+ term_sync.lock ();
+ zmq_assert (sockets > 0);
+ sockets--;
+ bool destroy = (sockets == 0 && terminated);
+ term_sync.unlock ();
+
+ if (destroy)
+ delete this;
+}
+
zmq::app_thread_t *zmq::dispatcher_t::choose_app_thread ()
{
// Check whether thread ID is already assigned. If so, return it.
diff --git a/src/dispatcher.hpp b/src/dispatcher.hpp
index cb445ef..bd1f655 100644
--- a/src/dispatcher.hpp
+++ b/src/dispatcher.hpp
@@ -52,12 +52,18 @@ namespace zmq
// signalers.
dispatcher_t (int app_threads_, int io_threads_);
- // To be called to terminate the whole infrastructure (zmq_term).
- ~dispatcher_t ();
+ // This function is called when user invokes zmq_term. If there are
+ // no more sockets open it'll cause all the infrastructure to be shut
+ // down. If there are open sockets still, the deallocation happens
+ // after the last one is closed.
+ int term ();
// Create a socket.
class socket_base_t *create_socket (int type_);
+ // Destroy a socket.
+ void destroy_socket ();
+
// Returns number of thread slots in the dispatcher. To be used by
// individual threads to find out how many distinct signals can be
// received.
@@ -93,6 +99,8 @@ namespace zmq
private:
+ ~dispatcher_t ();
+
// Returns the app thread associated with the current thread.
// NULL if we are out of app thread slots.
class app_thread_t *choose_app_thread ();
@@ -127,9 +135,20 @@ namespace zmq
typedef std::set <class pipe_t*> pipes_t;
pipes_t pipes;
- // Synchronisation of access to the pipes repository.
+ // Synchronisation of access to the pipes repository.
mutex_t pipes_sync;
+ // Number of sockets alive.
+ int sockets;
+
+ // If true, zmq_term was already called. When last socket is closed
+ // the whole 0MQ infrastructure should be deallocated.
+ bool terminated;
+
+ // Synchronisation of access to the termination data (socket count
+ // and 'terminated' flag).
+ mutex_t term_sync;
+
dispatcher_t (const dispatcher_t&);
void operator = (const dispatcher_t&);
};
diff --git a/src/object.cpp b/src/object.cpp
index c0ef21c..1433b7b 100644
--- a/src/object.cpp
+++ b/src/object.cpp
@@ -53,6 +53,11 @@ int zmq::object_t::get_thread_slot ()
return thread_slot;
}
+zmq::dispatcher_t *zmq::object_t::get_dispatcher ()
+{
+ return dispatcher;
+}
+
void zmq::object_t::process_command (command_t &cmd_)
{
switch (cmd_.type) {
diff --git a/src/object.hpp b/src/object.hpp
index 250e856..2e41507 100644
--- a/src/object.hpp
+++ b/src/object.hpp
@@ -40,6 +40,7 @@ namespace zmq
~object_t ();
int get_thread_slot ();
+ dispatcher_t *get_dispatcher ();
void process_command (struct command_t &cmd_);
// Allow pipe to access corresponding dispatcher functions.
diff --git a/src/session.cpp b/src/session.cpp
index ac2dd12..bc334e0 100644
--- a/src/session.cpp
+++ b/src/session.cpp
@@ -54,7 +54,12 @@ bool zmq::session_t::read (::zmq_msg_t *msg_)
bool zmq::session_t::write (::zmq_msg_t *msg_)
{
- return out_pipe->write (msg_);
+ if (out_pipe->write (msg_)) {
+ zmq_msg_init (msg_);
+ return true;
+ }
+
+ return false;
}
void zmq::session_t::flush ()
diff --git a/src/socket_base.cpp b/src/socket_base.cpp
index 6ad1f55..93a0a4c 100644
--- a/src/socket_base.cpp
+++ b/src/socket_base.cpp
@@ -24,7 +24,7 @@
#include "socket_base.hpp"
#include "app_thread.hpp"
-#include "err.hpp"
+#include "dispatcher.hpp"
#include "zmq_listener.hpp"
#include "zmq_connecter.hpp"
#include "msg_content.hpp"
@@ -34,6 +34,7 @@
#include "owned.hpp"
#include "uuid.hpp"
#include "pipe.hpp"
+#include "err.hpp"
zmq::socket_base_t::socket_base_t (app_thread_t *parent_) :
object_t (parent_),
@@ -288,7 +289,16 @@ int zmq::socket_base_t::recv (::zmq_msg_t *msg_, int flags_)
int zmq::socket_base_t::close ()
{
app_thread->remove_socket (this);
+
+ // Pointer to the dispatcher must be retrieved before the socket is
+ // deallocated. Afterwards it is not available.
+ dispatcher_t *dispatcher = get_dispatcher ();
delete this;
+
+ // This function must be called after the socket is completely deallocated
+ // as it may cause termination of the whole 0MQ infrastructure.
+ dispatcher->destroy_socket ();
+
return 0;
}
diff --git a/src/zmq.cpp b/src/zmq.cpp
index 49096ad..0ffd530 100644
--- a/src/zmq.cpp
+++ b/src/zmq.cpp
@@ -183,8 +183,7 @@ void *zmq_init (int app_threads_, int io_threads_)
int zmq_term (void *dispatcher_)
{
- delete (zmq::dispatcher_t*) dispatcher_;
- return 0;
+ return ((zmq::dispatcher_t*) dispatcher_)->term ();
}
void *zmq_socket (void *dispatcher_, int type_)