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-rw-r--r--bindings/c/zmq.h34
-rw-r--r--src/dispatcher.cpp2
-rw-r--r--src/err.cpp5
-rw-r--r--src/pub.cpp2
-rw-r--r--src/rep.cpp6
-rw-r--r--src/req.cpp8
-rw-r--r--src/socket_base.cpp10
-rw-r--r--src/sub.cpp4
-rw-r--r--src/zmq.cpp15
9 files changed, 65 insertions, 21 deletions
diff --git a/bindings/c/zmq.h b/bindings/c/zmq.h
index b65a771..3931039 100644
--- a/bindings/c/zmq.h
+++ b/bindings/c/zmq.h
@@ -36,6 +36,21 @@ extern "C" {
#endif
////////////////////////////////////////////////////////////////////////////////
+// 0MQ errors.
+////////////////////////////////////////////////////////////////////////////////
+
+// A number random anough not to collide with different errno ranges on
+// different OSes. The assumption is that error_t is at least 32-bit type.
+#define ZMQ_HAUSNUMERO 156384712
+
+#define EMTHREAD (ZMQ_HAUSNUMERO + 1)
+#define EFSM (ZMQ_HAUSNUMERO + 2)
+#define ENOCOMPATPROTO (ZMQ_HAUSNUMERO + 3)
+
+// Resolves system errors and 0MQ errors to human-readable string.
+ZMQ_EXPORT const char *zmq_strerror (int errnum);
+
+////////////////////////////////////////////////////////////////////////////////
// 0MQ message definition.
////////////////////////////////////////////////////////////////////////////////
@@ -154,8 +169,8 @@ ZMQ_EXPORT int zmq_term (void *context);
// Open a socket. 'type' is one of the socket types defined above.
//
// Errors: EINVAL - invalid socket type.
-// EMFILE - the number of application threads entitled to hold open
-// sockets at the same time was exceeded.
+// EMTHREAD - the number of application threads entitled to hold open
+// sockets at the same time was exceeded.
ZMQ_EXPORT void *zmq_socket (void *context, int type);
// Destroying the socket.
@@ -276,9 +291,15 @@ ZMQ_EXPORT int zmq_setsockopt (void *s, int option, const void *optval,
// "udp://192.168.0.111;224.1.1.1:5555".
// Bind the socket to a particular address.
+//
+// Errors: EPROTONOSUPPORT - unsupported protocol.
+// ENOCOMPATPROTO - protocol is not compatible with the socket type.
ZMQ_EXPORT int zmq_bind (void *s, const char *addr);
// Connect the socket to a particular address.
+//
+// Errors: EPROTONOSUPPORT - unsupported protocol.
+// ENOCOMPATPROTO - protocol is not compatible with the socket type.
ZMQ_EXPORT int zmq_connect (void *s, const char *addr);
// Sending and receiving messages.
@@ -303,12 +324,14 @@ ZMQ_EXPORT int zmq_connect (void *s, const char *addr);
//
// Errors: EAGAIN - message cannot be sent at the moment (applies only to
// non-blocking send).
-// EFAULT - function isn't supported by particular socket type.
+// ENOTSUP - function isn't supported by particular socket type.
+// EFSM - function cannot be called at the moment.
ZMQ_EXPORT int zmq_send (void *s, struct zmq_msg_t *msg, int flags);
// Flush the messages that were send using ZMQ_NOFLUSH flag down the stream.
//
-// Errors: FAULT - function isn't supported by particular socket type.
+// Errors: ENOTSUP - function isn't supported by particular socket type.
+// EFSM - function cannot be called at the moment.
ZMQ_EXPORT int zmq_flush (void *s);
// Send a message from the socket 's'. 'flags' argument can be combination
@@ -316,7 +339,8 @@ ZMQ_EXPORT int zmq_flush (void *s);
//
// Errors: EAGAIN - message cannot be received at the moment (applies only to
// non-blocking receive).
-// EFAULT - function isn't supported by particular socket type.
+// ENOTSUP - function isn't supported by particular socket type.
+// EFSM - function cannot be called at the moment.
ZMQ_EXPORT int zmq_recv (void *s, struct zmq_msg_t *msg, int flags);
////////////////////////////////////////////////////////////////////////////////
diff --git a/src/dispatcher.cpp b/src/dispatcher.cpp
index ef2f7c1..1f6b4f0 100644
--- a/src/dispatcher.cpp
+++ b/src/dispatcher.cpp
@@ -163,7 +163,7 @@ zmq::app_thread_t *zmq::dispatcher_t::choose_app_thread ()
return app_threads [i];
// Thread limit was exceeded.
- errno = EMFILE;
+ errno = EMTHREAD;
return NULL;
}
diff --git a/src/err.cpp b/src/err.cpp
index bca0c03..ef5b987 100644
--- a/src/err.cpp
+++ b/src/err.cpp
@@ -24,11 +24,16 @@
const char *zmq::wsa_error()
{
+
+
int errcode = WSAGetLastError ();
// TODO: This is not a generic way to handle this...
if (errcode == WSAEWOULDBLOCK)
return NULL;
+ // TODO: It seems that list of Windows socket errors is longer than this.
+ // Investigate whether there's a way to convert it into the string
+ // automatically (wsaError->HRESULT->string?).
return
(errcode == WSABASEERR) ?
"No Error" :
diff --git a/src/pub.cpp b/src/pub.cpp
index faaa9aa..a403157 100644
--- a/src/pub.cpp
+++ b/src/pub.cpp
@@ -152,7 +152,7 @@ int zmq::pub_t::xflush ()
int zmq::pub_t::xrecv (struct zmq_msg_t *msg_, int flags_)
{
- errno = EFAULT;
+ errno = ENOTSUP;
return -1;
}
diff --git a/src/rep.cpp b/src/rep.cpp
index fcf8058..7ebbc6d 100644
--- a/src/rep.cpp
+++ b/src/rep.cpp
@@ -137,7 +137,7 @@ int zmq::rep_t::xsetsockopt (int option_, const void *optval_,
int zmq::rep_t::xsend (struct zmq_msg_t *msg_, int flags_)
{
if (!waiting_for_reply) {
- errno = EFAULT;
+ errno = EFSM;
return -1;
}
@@ -161,7 +161,7 @@ int zmq::rep_t::xsend (struct zmq_msg_t *msg_, int flags_)
int zmq::rep_t::xflush ()
{
- errno = EFAULT;
+ errno = ENOTSUP;
return -1;
}
@@ -171,7 +171,7 @@ int zmq::rep_t::xrecv (struct zmq_msg_t *msg_, int flags_)
zmq_msg_close (msg_);
if (waiting_for_reply) {
- errno = EFAULT;
+ errno = EFSM;
return -1;
}
diff --git a/src/req.cpp b/src/req.cpp
index 9b4dffa..3fd9b38 100644
--- a/src/req.cpp
+++ b/src/req.cpp
@@ -120,12 +120,12 @@ int zmq::req_t::xsend (struct zmq_msg_t *msg_, int flags_)
// If we've sent a request and we still haven't got the reply,
// we can't send another request.
if (waiting_for_reply) {
- errno = EFAULT;
+ errno = EFSM;
return -1;
}
if (out_pipes.empty ()) {
- errno = EFAULT;
+ errno = EAGAIN;
return -1;
}
@@ -166,7 +166,7 @@ int zmq::req_t::xsend (struct zmq_msg_t *msg_, int flags_)
int zmq::req_t::xflush ()
{
- errno = EFAULT;
+ errno = ENOTSUP;
return -1;
}
@@ -178,7 +178,7 @@ int zmq::req_t::xrecv (struct zmq_msg_t *msg_, int flags_)
// If request wasn't send, we can't wait for reply.
if (!waiting_for_reply) {
zmq_msg_init (msg_);
- errno = EFAULT;
+ errno = EFSM;
return -1;
}
diff --git a/src/socket_base.cpp b/src/socket_base.cpp
index 0452993..6763167 100644
--- a/src/socket_base.cpp
+++ b/src/socket_base.cpp
@@ -100,8 +100,8 @@ int zmq::socket_base_t::bind (const char *addr_)
}
#endif
- // Unknown address type.
- errno = EFAULT;
+ // Unknown protocol.
+ errno = EPROTONOSUPPORT;
return -1;
}
@@ -185,7 +185,7 @@ int zmq::socket_base_t::connect (const char *addr_)
// If the socket type requires bi-directional communication
// multicast is not an option (it is uni-directional).
if (options.requires_in && options.requires_out) {
- errno = EFAULT;
+ errno = ENOCOMPATPROTO;
return -1;
}
@@ -235,8 +235,8 @@ int zmq::socket_base_t::connect (const char *addr_)
}
#endif
- // Unknown address type.
- errno = EFAULT;
+ // Unknown protoco.
+ errno = EPROTONOSUPPORT;
return -1;
}
diff --git a/src/sub.cpp b/src/sub.cpp
index 66aa8fd..abd9deb 100644
--- a/src/sub.cpp
+++ b/src/sub.cpp
@@ -124,13 +124,13 @@ int zmq::sub_t::xsetsockopt (int option_, const void *optval_,
int zmq::sub_t::xsend (struct zmq_msg_t *msg_, int flags_)
{
- errno = EFAULT;
+ errno = ENOTSUP;
return -1;
}
int zmq::sub_t::xflush ()
{
- errno = EFAULT;
+ errno = ENOTSUP;
return -1;
}
diff --git a/src/zmq.cpp b/src/zmq.cpp
index e831046..d6f7023 100644
--- a/src/zmq.cpp
+++ b/src/zmq.cpp
@@ -19,6 +19,7 @@
#include "../bindings/c/zmq.h"
+#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <new>
@@ -35,6 +36,20 @@
#include <sys/time.h>
#endif
+const char *zmq_strerror (int errnum_)
+{
+ switch (errnum_) {
+ case EMTHREAD:
+ return "Number of preallocated application threads exceeded";
+ case EFSM:
+ return "Operation cannot be accomplished in current state";
+ case ENOCOMPATPROTO:
+ return "The protocol is not compatible with the socket type";
+ default:
+ return strerror (errnum_);
+ }
+}
+
int zmq_msg_init (zmq_msg_t *msg_)
{
msg_->content = (zmq::msg_content_t*) ZMQ_VSM;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 10:44:01 +0000