Rename zmq_monitor to zmq_ctx_set_monitor for compat with existing context specific APIs

doc/Makefile.am

 MAN3 = zmq_bind.3 zmq_close.3 zmq_connect.3 zmq_device.3 \
     zmq_ctx_new.3 zmq_ctx_destroy.3 zmq_ctx_get.3 zmq_ctx_set.3 \
-    zmq_init.3 zmq_term.3 zmq_monitor.3\
+    zmq_init.3 zmq_term.3 zmq_ctx_set_monitor.3\
     zmq_msg_close.3 zmq_msg_copy.3 zmq_msg_data.3 zmq_msg_init.3 \
     zmq_msg_init_data.3 zmq_msg_init_size.3 zmq_msg_move.3 zmq_msg_size.3 \
     zmq_msg_send.3 zmq_msg_recv.3 \

doc/zmq.txt

@@ -45,7 +45,7 @@ Destroy a 0MQ context::
     linkzmq:zmq_ctx_destroy[3]
 
 Monitor a 0MQ context::
-    linkzmq:zmq_monitor[3]
+    linkzmq:zmq_ctx_set_monitor[3]
 
 These deprecated functions let you create and destroy 'contexts':
 

doc/zmq_monitor.txt

-zmq_monitor(3)
-==============
+zmq_ctx_set_monitor(3)
+======================
 
 
 NAME
 ----
 
-zmq_monitor - register a monitoring callback
+zmq_ctx_set_monitor - register a monitoring callback
 
 
 SYNOPSIS
 --------
-*int zmq_monitor (void '*context', zmq_monitor_fn '*monitor');*
+*int zmq_ctx_set_monitor (void '*context', zmq_monitor_fn '*monitor');*
 
 
 DESCRIPTION
 -----------
-The _zmq_monitor()_ function shall register a callback function specified by
+The _zmq_ctx_set_monitor()_ function shall register a callback function specified by
 the 'monitor' argument. This is an event sink for changes in per socket
 connection and mailbox (work in progress) states.
 
-.The _zmq_monitor()_ callback function is expected to have this prototype:
+.The _zmq_ctx_set_monitor()_ callback function is expected to have this prototype:
 ----
 typedef void (zmq_monitor_fn) (void *s, int event, zmq_event_data_t *data);
 ----
@@ -28,7 +28,7 @@ The callback is global (per context), with the socket that triggered the event
 passed to the handler as well. Each event also populates a 'zmq_event_data_t'
 union with additional metadata which can be used for correlation.
 
-CAUTION: _zmq_monitor()_ is intended for monitoring infrastructure / operations
+CAUTION: _zmq_ctx_set_monitor()_ is intended for monitoring infrastructure / operations
 concerns only - NOT BUSINESS LOGIC. An event is a representation of something
 that happened - you cannot change the past, but only react to them. The
 implementation is also only concerned with a single session. No state of peers,
@@ -158,7 +158,7 @@ data.disconnected.fd // socket descriptor
 
 RETURN VALUE
 ------------
-The _zmq_monitor()_ function returns a value of 0 or greater if successful.
+The _zmq_ctx_set_monitor()_ function returns a value of 0 or greater if successful.
 Otherwise it returns `-1` and sets 'errno' to one of the values defined
 below.
 
@@ -188,7 +188,7 @@ void socket_monitor (void *s, int event_, zmq_event_data_t *data_)
 }
 
 void *context = zmq_ctx_new ();
-int rc = zmq_monitor (context, socket_monitor);
+int rc = zmq_ctx_set_monitor (context, socket_monitor);
 assert (rc == 0);
 void *pub = zmq_socket (context, ZMQ_PUB);
 assert (pub);

include/zmq.h

@@ -301,7 +301,7 @@ typedef union {
 /*  Callback template for socket state changes                                */
 typedef void (zmq_monitor_fn) (void *s, int event, zmq_event_data_t *data);
 
-ZMQ_EXPORT int zmq_monitor (void *context, zmq_monitor_fn *monitor);
+ZMQ_EXPORT int zmq_ctx_set_monitor (void *context, zmq_monitor_fn *monitor);
 
 ZMQ_EXPORT void *zmq_socket (void *, int type);
 ZMQ_EXPORT int zmq_close (void *s);

src/zmq.cpp

@@ -205,7 +205,7 @@ int zmq_ctx_get (void *ctx_, int option_)
     return ((zmq::ctx_t*) ctx_)->get (option_);
 }
 
-int zmq_monitor (void *ctx_, zmq_monitor_fn *monitor_)
+int zmq_ctx_set_monitor (void *ctx_, zmq_monitor_fn *monitor_)
 {
     if (!ctx_ || !((zmq::ctx_t*) ctx_)->check_tag ()) {
         errno = EFAULT;

tests/test_monitor.cpp

@@ -84,7 +84,7 @@ int main (int argc, char *argv [])
     void *ctx = zmq_init (1);
     assert (ctx);
     // set socket monitor
-    rc = zmq_monitor (ctx, socket_monitor);
+    rc = zmq_ctx_set_monitor (ctx, socket_monitor);
     assert (rc == 0);
     void *rep = zmq_socket (ctx, ZMQ_REP);
     assert (rep);