Ruby binding functional

ruby/rbzmq.cpp

@@ -0,0 +1,292 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <zmq.h>
+#include <ruby.h>
+
+static void context_free (void *ctx)
+{
+    if (ctx) {
+       int rc = zmq_term (ctx);
+       assert (rc == 0);
+    }
+}
+
+static VALUE context_alloc (VALUE class_)
+{
+    return rb_data_object_alloc (class_, NULL, 0, context_free);
+}
+
+static VALUE context_initialize (VALUE self_, VALUE app_threads_,
+    VALUE io_threads_)
+{
+    assert (!DATA_PTR (self_));
+    void *ctx = zmq_init (NUM2INT (app_threads_), NUM2INT (io_threads_));
+    if (!ctx) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    DATA_PTR (self_) = (void*) ctx;
+    return self_;
+}
+
+static void socket_free (void *s)
+{
+    if (s) {
+       int rc = zmq_close (s);
+       assert (rc == 0);
+    }
+}
+
+static VALUE socket_alloc (VALUE class_)
+{
+    return rb_data_object_alloc (class_, NULL, 0, socket_free);
+}
+
+static VALUE socket_initialize (VALUE self_, VALUE context_, VALUE type_)
+{
+    assert (!DATA_PTR (self_));
+
+    if (strcmp (rb_obj_classname (context_), "Context") != 0) {
+        rb_raise (rb_eArgError, "expected Context object");
+        return Qnil;
+    }
+
+    void *s = zmq_socket (DATA_PTR (context_), NUM2INT (type_));
+    if (!s) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    DATA_PTR (self_) = (void*) s;
+    return self_;
+}
+
+/*
+static VALUE rb_setsockopt (VALUE self_, VALUE socket_, VALUE option_,
+    VALUE optval_)
+{
+	//  Get the socket.
+    void* socket;
+    Data_Get_Struct (socket_, void*, socket);
+    
+    int rc = 0;
+
+	if (TYPE (optval_) == T_STRING) {
+
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void *) StringValueCStr (optval_), RSTRING_LEN (optval_));	
+	
+	}
+	else if (TYPE (optval_) == T_FLOAT) {
+
+		double optval = NUM2DBL (optval_);
+		
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void*) &optval, 8);	
+	}
+	
+	else if (TYPE (optval_) == T_FIXNUM) {
+
+		long optval = FIX2LONG (optval_);
+		
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void *) &optval, 4);	
+	
+	}
+	
+	else if (TYPE (optval_) == T_BIGNUM) {
+
+		long optval = NUM2LONG (optval_);
+		
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void *) &optval, 4);	
+	
+	}
+	else if (TYPE (optval_) == T_ARRAY) {
+
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void *) RARRAY_PTR (optval_), RARRAY_LEN (optval_));	
+	
+	}
+	
+	else if (TYPE (optval_) == T_STRUCT) {
+
+		//  Forward the code to native 0MQ library.
+		rc = zmq_setsockopt (socket, NUM2INT (option_), 
+			(void *) RSTRUCT_PTR (optval_), RSTRUCT_LEN (optval_));	
+	
+	}
+	else 
+		rb_raise(rb_eRuntimeError, "Unknown type");    			
+    
+    assert (rc == 0);
+    
+    return self_;
+}
+*/
+
+static VALUE socket_bind (VALUE self_, VALUE addr_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_bind (DATA_PTR (self_), rb_string_value_cstr (&addr_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_connect (VALUE self_, VALUE addr_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_connect (DATA_PTR (self_), rb_string_value_cstr (&addr_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_send (VALUE self_, VALUE msg_, VALUE flags_)
+{
+    assert (DATA_PTR (self_));
+
+    Check_Type (msg_, T_STRING);
+
+    zmq_msg_t msg;
+    int rc = zmq_msg_init_size (&msg, RSTRING_LEN (msg_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (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) {
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qfalse;
+    }
+
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    rc = zmq_msg_close (&msg);
+    assert (rc == 0);
+    return Qtrue;
+}
+
+static VALUE socket_flush (VALUE self_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_flush (DATA_PTR (self_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_recv (VALUE self_, VALUE flags_)
+{
+    assert (DATA_PTR (self_));
+
+    zmq_msg_t msg;
+    int rc = zmq_msg_init (&msg);
+    assert (rc == 0);
+
+    rc = zmq_recv (DATA_PTR (self_), &msg, NUM2INT (flags_));
+    if (rc != 0 && errno == EAGAIN) {
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    VALUE message = rb_str_new ((char*) zmq_msg_data (&msg),
+        zmq_msg_size (&msg));
+    rc = zmq_msg_close (&msg);
+    assert (rc == 0);
+    return message;
+}
+
+extern "C" void Init_librbzmq ()
+{	
+    VALUE context_type = rb_define_class ("Context", rb_cObject);
+    rb_define_alloc_func (context_type, context_alloc);
+    rb_define_method (context_type, "initialize",
+        (VALUE(*)(...)) context_initialize, 2);
+
+    VALUE socket_type = rb_define_class ("Socket", rb_cObject);
+    rb_define_alloc_func (socket_type, socket_alloc);
+    rb_define_method (socket_type, "initialize",
+        (VALUE(*)(...)) socket_initialize, 2);
+//    rb_define_method (socket_type, "setsockopt",
+//        (VALUE(*)(...)) socket_setsockopt, 2);
+    rb_define_method (socket_type, "bind",
+        (VALUE(*)(...)) socket_bind, 1);
+    rb_define_method (socket_type, "connect",
+        (VALUE(*)(...)) socket_connect, 1);
+    rb_define_method (socket_type, "send",
+        (VALUE(*)(...)) socket_send, 2);
+    rb_define_method (socket_type, "flush",
+        (VALUE(*)(...)) socket_flush, 0);
+    rb_define_method (socket_type, "recv",
+        (VALUE(*)(...)) socket_recv, 1);
+
+    rb_define_global_const ("HWM", INT2NUM (ZMQ_HWM));
+    rb_define_global_const ("LWM", INT2NUM (ZMQ_LWM));
+    rb_define_global_const ("SWAP", INT2NUM (ZMQ_SWAP));
+    rb_define_global_const ("MASK", INT2NUM (ZMQ_MASK));
+    rb_define_global_const ("AFFINITY", INT2NUM (ZMQ_AFFINITY));
+    rb_define_global_const ("IDENTITY", INT2NUM (ZMQ_IDENTITY));
+    rb_define_global_const ("NOBLOCK", INT2NUM (ZMQ_NOBLOCK));
+    rb_define_global_const ("NOFLUSH", INT2NUM (ZMQ_NOFLUSH));
+    rb_define_global_const ("P2P", INT2NUM (ZMQ_P2P));
+    rb_define_global_const ("SUB", INT2NUM (ZMQ_SUB));
+    rb_define_global_const ("PUB", INT2NUM (ZMQ_PUB));
+    rb_define_global_const ("REQ", INT2NUM (ZMQ_REQ));
+    rb_define_global_const ("REP", INT2NUM (ZMQ_REP));
+}