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Java binding beautified, inline documentation added

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This commit is contained in:
Martin Sustrik 2010-02-23 11:52:33 +01:00
parent ef1b597489
commit 7c0df6ee02
5 changed files with 276 additions and 122 deletions
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1
AUTHORS
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@ -13,6 +13,7 @@ Erich Heine
Erik Rigtorp
Frank Denis
George Neill
Gonzalo Diethelm
Joe Thornber
Jon Dyte
Kamil Shakirov

106
bindings/java/Context.cpp Normal file → Executable file
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@ -17,8 +17,6 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
@ -26,9 +24,51 @@
#include "org_zmq_Context.h"
/** Handle to Java's Context::contextHandle. */
static jfieldID ctx_handle_fid = NULL;
static void raise_exception (JNIEnv *env, int err)
/**
* Make sure we have a valid pointer to Java's Context::contextHandle.
*/
static void ensure_context (JNIEnv *env,
jobject obj)
{
if (ctx_handle_fid == NULL) {
jclass cls = env->GetObjectClass (obj);
assert (cls);
ctx_handle_fid = env->GetFieldID (cls, "contextHandle", "J");
assert (ctx_handle_fid);
env->DeleteLocalRef (cls);
}
}
/**
* Get the value of Java's Context::contextHandle.
*/
static void *get_context (JNIEnv *env,
jobject obj)
{
ensure_context (env, obj);
void *s = (void*) env->GetLongField (obj, ctx_handle_fid);
return s;
}
/**
* Set the value of Java's Context::contextHandle.
*/
static void put_context (JNIEnv *env,
jobject obj,
void *s)
{
ensure_context (env, obj);
env->SetLongField (obj, ctx_handle_fid, (jlong) s);
}
/**
* Raise an exception that includes 0MQ's error message.
*/
static void raise_exception (JNIEnv *env,
int err)
{
// Get exception class.
jclass exception_class = env->FindClass ("java/lang/Exception");
@ -39,52 +79,42 @@ static void raise_exception (JNIEnv *env, int err)
// Raise the exception.
int rc = env->ThrowNew (exception_class, err_msg);
assert (rc == 0);
// Free the local ref.
env->DeleteLocalRef (exception_class);
assert (rc == 0);
}
JNIEXPORT void JNICALL Java_org_zmq_Context_construct (JNIEnv *env, jobject obj,
jint app_threads, jint io_threads, jint flags)
/**
* Called to construct a Java Context object.
*/
JNIEXPORT void JNICALL Java_org_zmq_Context_construct (JNIEnv *env,
jobject obj,
jint app_threads,
jint io_threads,
jint flags)
{
if (ctx_handle_fid == NULL) {
jclass cls = env->GetObjectClass (obj);
assert (cls);
ctx_handle_fid = env->GetFieldID (cls, "contextHandle", "J");
assert (ctx_handle_fid);
env->DeleteLocalRef (cls);
}
void *c = get_context (env, obj);
assert (! c);
void *ctx = zmq_init (app_threads, io_threads, flags);
if (ctx == NULL) {
c = zmq_init (app_threads, io_threads, flags);
put_context(env, obj, c);
if (c == NULL) {
raise_exception (env, errno);
return;
}
env->SetLongField (obj, ctx_handle_fid, (jlong) ctx);
}
JNIEXPORT void JNICALL Java_org_zmq_Context_finalize (JNIEnv *env, jobject obj)
/**
* Called to destroy a Java Context object.
*/
JNIEXPORT void JNICALL Java_org_zmq_Context_finalize (JNIEnv *env,
jobject obj)
{
void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
assert (ctx);
void *c = get_context (env, obj);
assert (c);
int rc = zmq_term (ctx);
int rc = zmq_term (c);
put_context (env, obj, NULL);
assert (rc == 0);
}
JNIEXPORT jlong JNICALL Java_org_zmq_Context_createSocket (JNIEnv *env,
jobject obj, jint type)
{
void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
assert (ctx);
void *s = zmq_socket (ctx, type);
if (s == NULL) {
raise_exception (env, errno);
return -1;
}
return (jlong) s;
}

215
bindings/java/Socket.cpp Normal file → Executable file
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@ -17,7 +17,6 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
@ -27,9 +26,79 @@
#include "org_zmq_Socket.h"
/** Handle to Java's Socket::socketHandle. */
static jfieldID socket_handle_fid = NULL;
static jmethodID create_socket_mid = NULL;
/**
* Make sure we have a valid pointer to Java's Socket::socketHandle.
*/
static void ensure_socket (JNIEnv *env,
jobject obj)
{
if (socket_handle_fid == NULL) {
jclass cls = env->GetObjectClass (obj);
assert (cls);
socket_handle_fid = env->GetFieldID (cls, "socketHandle", "J");
assert (socket_handle_fid);
env->DeleteLocalRef (cls);
}
}
/**
* Get the value of Java's Socket::socketHandle.
*/
static void *get_socket (JNIEnv *env,
jobject obj)
{
ensure_socket (env, obj);
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
return s;
}
/**
* Set the value of Java's Socket::socketHandle.
*/
static void put_socket (JNIEnv *env,
jobject obj,
void *s)
{
ensure_socket (env, obj);
env->SetLongField (obj, socket_handle_fid, (jlong) s);
}
/**
* Get the value of contextHandle for the Java Context associated with
* this Java Socket object.
*/
static void *fetch_context (JNIEnv *env,
jobject context)
{
static jmethodID get_context_handle_mid = NULL;
if (get_context_handle_mid == NULL) {
jclass cls = env->GetObjectClass (context);
assert (cls);
get_context_handle_mid = env->GetMethodID (cls,
"getContextHandle",
"()J");
env->DeleteLocalRef (cls);
assert (get_context_handle_mid);
}
void *zmq_ctx = (void*) env->CallLongMethod (context,
get_context_handle_mid);
if (env->ExceptionCheck ()) {
zmq_ctx = NULL;
}
assert (zmq_ctx);
return zmq_ctx;
}
/**
* Raise an exception that includes 0MQ's error message.
*/
static void raise_exception (JNIEnv *env, int err)
{
// Get exception class.
@ -41,46 +110,49 @@ static void raise_exception (JNIEnv *env, int err)
// Raise the exception.
int rc = env->ThrowNew (exception_class, err_msg);
assert (rc == 0);
// Free the local ref.
env->DeleteLocalRef (exception_class);
}
JNIEXPORT void JNICALL Java_org_zmq_Socket_construct (JNIEnv *env, jobject obj,
jobject context, jint type)
{
if (socket_handle_fid == NULL) {
jclass cls = env->GetObjectClass (obj);
assert (cls);
socket_handle_fid = env->GetFieldID (cls, "socketHandle", "J");
assert (socket_handle_fid);
env->DeleteLocalRef (cls);
}
if (create_socket_mid == NULL) {
jclass cls = env->FindClass ("org/zmq/Context");
assert (cls);
create_socket_mid = env->GetMethodID (cls, "createSocket", "(I)J");
assert (create_socket_mid);
env->DeleteLocalRef (cls);
}
void *s = (void*) env->CallLongMethod (context, create_socket_mid, type);
if (env->ExceptionCheck ())
return;
env->SetLongField (obj, socket_handle_fid, (jlong) s);
}
JNIEXPORT void JNICALL Java_org_zmq_Socket_finalize (JNIEnv *env, jobject obj)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
assert (s);
int rc = zmq_close (s);
assert (rc == 0);
}
/**
* Called to construct a Java Socket object.
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_construct (JNIEnv *env,
jobject obj,
jobject context,
jint type)
{
void *s = get_socket (env, obj);
assert (! s);
void *zmq_ctx = fetch_context (env, context);
s = zmq_socket (zmq_ctx, type);
put_socket(env, obj, s);
if (s == NULL) {
raise_exception (env, errno);
return;
}
}
/**
* Called to destroy a Java Socket object.
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_finalize (JNIEnv *env,
jobject obj)
{
void *s = get_socket (env, obj);
assert (s);
int rc = zmq_close (s);
put_socket (env, obj, NULL);
assert (rc == 0);
}
/**
* Called by Java's Socket::setsockopt(int option, long optval).
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__IJ (JNIEnv *env,
jobject obj, jint option, jlong optval)
{
@ -93,7 +165,7 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__IJ (JNIEnv *env,
case ZMQ_RECOVERY_IVL:
case ZMQ_MCAST_LOOP:
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
int64_t value = optval;
@ -108,8 +180,14 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__IJ (JNIEnv *env,
}
}
/**
* Called by Java's Socket::setsockopt(int option, String optval).
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__ILjava_lang_String_2 (
JNIEnv *env, jobject obj, jint option, jstring optval)
JNIEnv *env,
jobject obj,
jint option,
jstring optval)
{
switch (option) {
case ZMQ_IDENTITY:
@ -121,8 +199,8 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__ILjava_lang_String_2 (
return;
}
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
assert (s);
void *s = get_socket (env, obj);
assert (s);
const char *value = env->GetStringUTFChars (optval, NULL);
assert (value);
@ -138,10 +216,14 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_setsockopt__ILjava_lang_String_2 (
}
}
JNIEXPORT void JNICALL Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj,
jstring addr)
/**
* Called by Java's Socket::bind(String addr).
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_bind (JNIEnv *env,
jobject obj,
jstring addr)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
if (addr == NULL) {
@ -162,10 +244,14 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj,
raise_exception (env, errno);
}
JNIEXPORT void JNICALL Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj,
jstring addr)
/**
* Called by Java's Socket::connect(String addr).
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_connect (JNIEnv *env,
jobject obj,
jstring addr)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
if (addr == NULL) {
@ -186,10 +272,15 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj,
raise_exception (env, errno);
}
JNIEXPORT jboolean JNICALL Java_org_zmq_Socket_send (JNIEnv *env, jobject obj,
jbyteArray msg, jlong flags)
/**
* Called by Java's Socket::send(byte [] msg, long flags).
*/
JNIEXPORT jboolean JNICALL Java_org_zmq_Socket_send (JNIEnv *env,
jobject obj,
jbyteArray msg,
jlong flags)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
jsize size = env->GetArrayLength (msg);
@ -222,9 +313,13 @@ JNIEXPORT jboolean JNICALL Java_org_zmq_Socket_send (JNIEnv *env, jobject obj,
return JNI_TRUE;
}
JNIEXPORT void JNICALL Java_org_zmq_Socket_flush (JNIEnv *env, jobject obj)
/**
* Called by Java's Socket::flush().
*/
JNIEXPORT void JNICALL Java_org_zmq_Socket_flush (JNIEnv *env,
jobject obj)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
int rc = zmq_flush (s);
@ -235,10 +330,14 @@ JNIEXPORT void JNICALL Java_org_zmq_Socket_flush (JNIEnv *env, jobject obj)
}
}
JNIEXPORT jbyteArray JNICALL Java_org_zmq_Socket_recv (JNIEnv *env, jobject obj,
jlong flags)
/**
* Called by Java's Socket::recv(long flags).
*/
JNIEXPORT jbyteArray JNICALL Java_org_zmq_Socket_recv (JNIEnv *env,
jobject obj,
jlong flags)
{
void *s = (void*) env->GetLongField (obj, socket_handle_fid);
void *s = get_socket (env, obj);
assert (s);
zmq_msg_t message;
@ -258,8 +357,10 @@ JNIEXPORT jbyteArray JNICALL Java_org_zmq_Socket_recv (JNIEnv *env, jobject obj,
jbyteArray data = env->NewByteArray (zmq_msg_size (&message));
assert (data);
env->SetByteArrayRegion (data, 0, zmq_msg_size (&message),
(jbyte*) zmq_msg_data (&message));
env->SetByteArrayRegion (data,
0,
zmq_msg_size (&message),
(jbyte*) zmq_msg_data (&message));
return data;
}

17
bindings/java/org/zmq/Context.java Normal file → Executable file
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@ -36,17 +36,22 @@ public class Context {
construct (appThreads, ioThreads, flags);
}
/**
* Internal function. Do not use directly!
*/
public native long createSocket (int type);
/** Initialize the JNI interface */
protected native void construct (int appThreads, int ioThreads, int flags);
/** Free resources used by JNI driver. */
/** Free all resources used by JNI interface. */
protected native void finalize ();
/**
* Get the underlying context handle.
*
* @return the internal 0MQ context handle.
*/
private long getContextHandle () {
return contextHandle;
}
/** Opaque data used by JNI driver. */
private long contextHandle;
}

59
bindings/java/org/zmq/Socket.java Normal file → Executable file
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@ -1,4 +1,4 @@
/*
/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
@ -19,9 +19,7 @@
package org.zmq;
public class Socket
{
public class Socket {
static {
System.loadLibrary("jzmq");
}
@ -52,44 +50,53 @@ public class Socket
public static final int SNDBUF = 11;
public static final int RCVBUF = 12;
/**
* Class constructor.
*
* @param context
* @param type
* @param context a 0MQ context previously created.
* @param type the socket type.
*/
public Socket (Context context, int type) {
construct (context, type);
}
/**
* Set the socket option value.
* Set the socket option value, given as a long.
*
* @param option ID of the option to set
* @param optval value to set the option to
* @param option ID of the option to set.
* @param optval value (as a long) to set the option to.
*/
public native void setsockopt (int option, long optval);
public native void setsockopt (int option, String optval);
public native void setsockopt (int option, long optval);
/**
* Set the socket option value, given as a String.
*
* @param option ID of the option to set.
* @param optval value (as a String) to set the option to.
*/
public native void setsockopt (int option, String optval);
/**
* Bind to network interface. Start listening for new connections.
*
* @param addr
* @param addr the endpoint to bind to.
*/
public native void bind (String addr);
/**
* Connect to remote application.
*
* @param addr
* @param addr the endpoint to connect to.
*/
public native void connect (String addr);
/**
* Send the message.
* Send a message.
*
* @param msg
* @param flags
* @param msg the message to send, as an array of bytes.
* @param flags the flags to apply to the send operation.
* @return true if send was successful, false otherwise.
*/
public native boolean send (byte [] msg, long flags);
@ -99,19 +106,29 @@ public class Socket
public native void flush ();
/**
* Receive message.
* Receive a message.
*
* @param flags
* @return
* @param flags the flags to apply to the receive operation.
* @return the message received, as an array of bytes; null on error.
*/
public native byte [] recv (long flags);
/** Initialize JNI driver */
/** Initialize the JNI interface */
protected native void construct (Context context, int type);
/** Free all resources used by JNI driver. */
/** Free all resources used by JNI interface. */
protected native void finalize ();
/**
* Get the underlying socket handle.
*
* @return the internal 0MQ socket handle.
*/
private long getSocketHandle () {
return socketHandle;
}
/** Opaque data used by JNI driver. */
private long socketHandle;