libdtrace_jni/common/dtj_probe.c

	dtj_probe.c revision fb3fb4f3d76d55b64440afd0af72775dfad3bd1d
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <string.h>
#include <dtrace_jni.h>

/*
 * This file creates instances of the following Java classes:
 *  - org.opensolaris.os.dtrace.ProbeDescription
 *  - org.opensolaris.os.dtrace.ProbeInfo
 */

jobject
dtj_new_probedesc(dtj_java_consumer_t *jc, const dtrace_probedesc_t *probedesc)
{
    JNIEnv *jenv = jc->dtjj_jenv;

    jstring jprov = NULL;
    jstring jmod = NULL;
    jstring jfunc = NULL;
    jstring jname = NULL;
    jobject jprobedesc = NULL;

    jprov = (*jenv)->NewStringUTF(jenv, probedesc->dtpd_provider);
    if ((*jenv)->ExceptionCheck(jenv)) {
        goto cleanup;
    }
    jmod = (*jenv)->NewStringUTF(jenv, probedesc->dtpd_mod);
    if ((*jenv)->ExceptionCheck(jenv)) {
        goto cleanup;
    }
    jfunc = (*jenv)->NewStringUTF(jenv, probedesc->dtpd_func);
    if ((*jenv)->ExceptionCheck(jenv)) {
        goto cleanup;
    }
    jname = (*jenv)->NewStringUTF(jenv, probedesc->dtpd_name);
    if ((*jenv)->ExceptionCheck(jenv)) {
        goto cleanup;
    }
    jprobedesc = (*jenv)->NewObject(jenv, g_probedesc_jc,
        g_probedescinit_jm, jprov, jmod, jfunc, jname);
    if ((*jenv)->ExceptionCheck(jenv)) {
        goto cleanup;
    }
    /* Does not throw exceptions */
    (*jenv)->SetIntField(jenv, jprobedesc, g_probedesc_id_jf,
        probedesc->dtpd_id);

cleanup:

    (*jenv)->DeleteLocalRef(jenv, jprov);
    (*jenv)->DeleteLocalRef(jenv, jmod);
    (*jenv)->DeleteLocalRef(jenv, jfunc);
    (*jenv)->DeleteLocalRef(jenv, jname);
    return (jprobedesc);
}

jobject
dtj_new_probeinfo(dtj_java_consumer_t *jc, const dtrace_probeinfo_t *probeinfo)
{
    JNIEnv *jenv = jc->dtjj_jenv;

    jobject jprobeattr = NULL;
    jobject jargattr = NULL;
    jobject jprobeinfo = NULL; /* return value */

    jprobeattr = dtj_new_attribute(jc, &probeinfo->dtp_attr);
    if ((*jenv)->ExceptionCheck(jenv)) {
        return (NULL);
    }
    jargattr = dtj_new_attribute(jc, &probeinfo->dtp_arga);
    if ((*jenv)->ExceptionCheck(jenv)) {
        (*jenv)->DeleteLocalRef(jenv, jprobeattr);
        return (NULL);
    }

    jprobeinfo = (*jenv)->NewObject(jenv, g_probeinfo_jc,
        g_probeinfoinit_jm, jprobeattr, jargattr);

    (*jenv)->DeleteLocalRef(jenv, jprobeattr);
    (*jenv)->DeleteLocalRef(jenv, jargattr);
    return (jprobeinfo);
}