zmq_error used from ruby binding

bindings/ruby/rbzmq.cpp

@@ -18,7 +18,6 @@
 */
 
 #include <assert.h>
-#include <errno.h>
 #include <string.h>
 #include <ruby.h>
 
@@ -44,7 +43,7 @@ static VALUE context_initialize (VALUE self_, VALUE app_threads_,
     void *ctx = zmq_init (NUM2INT (app_threads_), NUM2INT (io_threads_),
         NUM2INT (flags_));
     if (!ctx) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -76,7 +75,7 @@ static VALUE socket_initialize (VALUE self_, VALUE context_, VALUE type_)
 
     void *s = zmq_socket (DATA_PTR (context_), NUM2INT (type_));
     if (!s) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -118,12 +117,12 @@ static VALUE socket_setsockopt (VALUE self_, VALUE option_,
         break;
 
     default:
-        rc = -1;
-        errno = EINVAL;
+        rb_raise (rb_eRuntimeError, zmq_strerror (EINVAL));
+        return Qnil;
     }
 
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -137,7 +136,7 @@ static VALUE socket_bind (VALUE self_, VALUE addr_)
 
     int rc = zmq_bind (DATA_PTR (self_), rb_string_value_cstr (&addr_));
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -150,7 +149,7 @@ static VALUE socket_connect (VALUE self_, VALUE addr_)
 
     int rc = zmq_connect (DATA_PTR (self_), rb_string_value_cstr (&addr_));
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -166,20 +165,20 @@ static VALUE socket_send (VALUE self_, VALUE msg_, VALUE flags_)
     zmq_msg_t msg;
     int rc = zmq_msg_init_size (&msg, RSTRING_LEN (msg_));
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
     memcpy (zmq_msg_data (&msg), RSTRING_PTR (msg_), RSTRING_LEN (msg_));
 
     rc = zmq_send (DATA_PTR (self_), &msg, NUM2INT (flags_));
-    if (rc != 0 && errno == EAGAIN) {
+    if (rc != 0 && zmq_errno () == EAGAIN) {
         rc = zmq_msg_close (&msg);
         assert (rc == 0);
         return Qfalse;
     }
 
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         rc = zmq_msg_close (&msg);
         assert (rc == 0);
         return Qnil;
@@ -196,7 +195,7 @@ static VALUE socket_flush (VALUE self_)
 
     int rc = zmq_flush (DATA_PTR (self_));
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         return Qnil;
     }
 
@@ -212,14 +211,14 @@ static VALUE socket_recv (VALUE self_, VALUE flags_)
     assert (rc == 0);
 
     rc = zmq_recv (DATA_PTR (self_), &msg, NUM2INT (flags_));
-    if (rc != 0 && errno == EAGAIN) {
+    if (rc != 0 && zmq_errno () == EAGAIN) {
         rc = zmq_msg_close (&msg);
         assert (rc == 0);
         return Qnil;
     }
 
     if (rc != 0) {
-        rb_raise (rb_eRuntimeError, zmq_strerror (errno));
+        rb_raise (rb_eRuntimeError, zmq_strerror (zmq_errno ()));
         rc = zmq_msg_close (&msg);
         assert (rc == 0);
         return Qnil;