jpathwatch-native.src.BSD_kevent.cpp Maven / Gradle / Ivy
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jpathwatch is a Java library for monitoring directories for changes. It
uses the host platform's native OS functions to achive this to avoid
polling.
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/*
* Copyright 2008-2011 Uwe Pachler
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. This particular file is
* subject to the "Classpath" exception as provided in the LICENSE file
* that accompanied this code.
*
* This code 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 GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "name_pachler_nio_file_impl_BSD_kevent.h"
#include "BSD_kevent.h"
#include "nativelib.h"
static jweak jkeventClassWeakRef = 0;
static jmethodID jkeventConstructorMID = 0;
static jfieldID jkeventPeerFID = 0;
static void kevent_initNative(JNIEnv* env, jclass clazz)
{
jkeventClassWeakRef = env->NewWeakGlobalRef(clazz);
jkeventConstructorMID = env->GetMethodID(clazz, "", "()V");
jkeventPeerFID = env->GetFieldID(clazz, "peer", "J");
}
static void kevent_setUDataJobject(JNIEnv* env, struct kevent* ke, jobject obj)
{
void* udata = ke->udata;
if(udata != 0)
{
env->DeleteGlobalRef(reinterpret_cast(udata));
udata = 0;
}
if(obj != 0)
udata = reinterpret_cast(env->NewGlobalRef(obj));
ke->udata = udata;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_initNative
(JNIEnv* env, jclass clazz)
{
kevent_initNative(env, clazz);
}
JNIEXPORT jlong JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_createPeer
(JNIEnv *, jclass)
{
struct kevent empty = {};
struct kevent* peer = new struct kevent(empty);
return reinterpret_cast(peer);
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_destroyPeer
(JNIEnv* env, jclass, jlong peer)
{
struct kevent* e = reinterpret_cast(peer);
kevent_setUDataJobject(env, e, 0);
delete e;
}
JNIEXPORT jlong JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1ident
(JNIEnv* env, jobject jkevent)
{
return BSD_Jkevent_getPeer(env, jkevent)->ident;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1ident
(JNIEnv* env, jobject jkevent, jlong ident)
{
BSD_Jkevent_getPeer(env, jkevent)->ident = ident;
}
JNIEXPORT jshort JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1filter
(JNIEnv* env, jobject jkevent)
{
return BSD_Jkevent_getPeer(env, jkevent)->filter;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1filter
(JNIEnv* env, jobject jkevent, jshort filter)
{
BSD_Jkevent_getPeer(env, jkevent)->filter = filter;
}
JNIEXPORT jshort JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1flags
(JNIEnv* env, jobject jkevent)
{
return BSD_Jkevent_getPeer(env, jkevent)->flags;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1flags
(JNIEnv* env, jobject jkevent, jshort flags)
{
BSD_Jkevent_getPeer(env, jkevent)->flags = flags;
}
JNIEXPORT jint JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1fflags
(JNIEnv* env, jobject jkevent)
{
return BSD_Jkevent_getPeer(env, jkevent)->fflags;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1fflags
(JNIEnv* env, jobject jkevent, jint fflags)
{
BSD_Jkevent_getPeer(env, jkevent)->fflags = fflags;
}
JNIEXPORT jlong JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1data
(JNIEnv* env, jobject jkevent)
{
return BSD_Jkevent_getPeer(env, jkevent)->data;
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1data
(JNIEnv* env, jobject jkevent, jlong data)
{
BSD_Jkevent_getPeer(env, jkevent)->data = data;
}
JNIEXPORT jobject JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_get_1udata
(JNIEnv* env, jobject jkevent)
{
struct kevent* ke = BSD_Jkevent_getPeer(env, jkevent);
void* udata = ke->udata;
return env->NewLocalRef(reinterpret_cast(udata));
}
JNIEXPORT void JNICALL Java_name_pachler_nio_file_impl_BSD_00024kevent_set_1udata
(JNIEnv* env, jobject jkevent, jobject obj)
{
struct kevent* ke = BSD_Jkevent_getPeer(env, jkevent);
kevent_setUDataJobject(env, ke, obj);
}
jobject BSD_Jkevent_create(JNIEnv* env)
{
jclass clazz = (jclass) env->NewLocalRef(jkeventClassWeakRef);
jobject instance = env->NewObject(clazz, jkeventConstructorMID);
env->DeleteLocalRef(clazz);
return instance;
}
struct kevent* BSD_Jkevent_getPeer(JNIEnv* env, jobject jkevent){
if(jkevent == 0)
return 0;
jlong peer = env->GetLongField(jkevent, jkeventPeerFID);
return reinterpret_cast(peer);
}
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