xref: /titanic_41/usr/src/lib/libdtrace_jni/common/dtj_attr.c (revision fb3fb4f3d76d55b64440afd0af72775dfad3bd1d)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <dtrace_jni.h>
30 
31 /*
32  * This file creates instances of the Java class
33  * org.opensolaris.os.dtrace.InterfaceAttributes.
34  */
35 
36 static const char *
dtj_stability_name(dtrace_stability_t stability)37 dtj_stability_name(dtrace_stability_t stability)
38 {
39 	const char *name;
40 	switch (stability) {
41 	case DTRACE_STABILITY_INTERNAL:
42 		name = "INTERNAL";
43 		break;
44 	case DTRACE_STABILITY_PRIVATE:
45 		name = "PRIVATE";
46 		break;
47 	case DTRACE_STABILITY_OBSOLETE:
48 		name = "OBSOLETE";
49 		break;
50 	case DTRACE_STABILITY_EXTERNAL:
51 		name = "EXTERNAL";
52 		break;
53 	case DTRACE_STABILITY_UNSTABLE:
54 		name = "UNSTABLE";
55 		break;
56 	case DTRACE_STABILITY_EVOLVING:
57 		name = "EVOLVING";
58 		break;
59 	case DTRACE_STABILITY_STABLE:
60 		name = "STABLE";
61 		break;
62 	case DTRACE_STABILITY_STANDARD:
63 		name = "STANDARD";
64 		break;
65 	default:
66 		name = NULL;
67 	}
68 
69 	return (name);
70 }
71 
72 static const char *
dtj_dependency_class_name(dtrace_class_t class)73 dtj_dependency_class_name(dtrace_class_t class)
74 {
75 	const char *name;
76 	switch (class) {
77 	case DTRACE_CLASS_UNKNOWN:
78 		name = "UNKNOWN";
79 		break;
80 	case DTRACE_CLASS_CPU:
81 		name = "CPU";
82 		break;
83 	case DTRACE_CLASS_PLATFORM:
84 		name = "PLATFORM";
85 		break;
86 	case DTRACE_CLASS_GROUP:
87 		name = "GROUP";
88 		break;
89 	case DTRACE_CLASS_ISA:
90 		name = "ISA";
91 		break;
92 	case DTRACE_CLASS_COMMON:
93 		name = "COMMON";
94 		break;
95 	default:
96 		name = NULL;
97 	}
98 
99 	return (name);
100 }
101 
102 jobject
dtj_new_attribute(dtj_java_consumer_t * jc,const dtrace_attribute_t * attr)103 dtj_new_attribute(dtj_java_consumer_t *jc, const dtrace_attribute_t *attr)
104 {
105 	JNIEnv *jenv = jc->dtjj_jenv;
106 
107 	const char *name;
108 
109 	jstring jname = NULL;
110 	jobject jattr = NULL; /* return value */
111 
112 	jattr = (*jenv)->NewObject(jenv, g_attr_jc, g_attrinit_jm);
113 	if ((*jenv)->ExceptionCheck(jenv)) {
114 		return (NULL);
115 	}
116 
117 	/* name stability */
118 	name = dtj_stability_name(attr->dtat_name);
119 	if (!name) {
120 		dtj_throw_illegal_argument(jenv,
121 		    "unexpected name stability value: %d",
122 		    attr->dtat_name);
123 		(*jenv)->DeleteLocalRef(jenv, jattr);
124 		return (NULL);
125 	}
126 	jname = (*jenv)->NewStringUTF(jenv, name);
127 	if ((*jenv)->ExceptionCheck(jenv)) {
128 		(*jenv)->DeleteLocalRef(jenv, jattr);
129 		return (NULL);
130 	}
131 	(*jenv)->CallVoidMethod(jenv, jattr, g_attrset_name_jm, jname);
132 	(*jenv)->DeleteLocalRef(jenv, jname);
133 	if ((*jenv)->ExceptionCheck(jenv)) {
134 		(*jenv)->DeleteLocalRef(jenv, jattr);
135 		return (NULL);
136 	}
137 
138 	/* data stability */
139 	name = dtj_stability_name(attr->dtat_data);
140 	if (!name) {
141 		dtj_throw_illegal_argument(jenv,
142 		    "unexpected data stability value: %d",
143 		    attr->dtat_data);
144 		(*jenv)->DeleteLocalRef(jenv, jattr);
145 		return (NULL);
146 	}
147 	jname = (*jenv)->NewStringUTF(jenv, name);
148 	if ((*jenv)->ExceptionCheck(jenv)) {
149 		(*jenv)->DeleteLocalRef(jenv, jattr);
150 		return (NULL);
151 	}
152 	(*jenv)->CallVoidMethod(jenv, jattr, g_attrset_data_jm, jname);
153 	(*jenv)->DeleteLocalRef(jenv, jname);
154 	if ((*jenv)->ExceptionCheck(jenv)) {
155 		(*jenv)->DeleteLocalRef(jenv, jattr);
156 		return (NULL);
157 	}
158 
159 	/* dependency class */
160 	name = dtj_dependency_class_name(attr->dtat_class);
161 	if (!name) {
162 		dtj_throw_illegal_argument(jenv,
163 		    "unexpected dependency class value: %d",
164 		    attr->dtat_class);
165 		(*jenv)->DeleteLocalRef(jenv, jattr);
166 		return (NULL);
167 	}
168 	jname = (*jenv)->NewStringUTF(jenv, name);
169 	if ((*jenv)->ExceptionCheck(jenv)) {
170 		(*jenv)->DeleteLocalRef(jenv, jattr);
171 		return (NULL);
172 	}
173 	(*jenv)->CallVoidMethod(jenv, jattr, g_attrset_class_jm, jname);
174 	(*jenv)->DeleteLocalRef(jenv, jname);
175 	if ((*jenv)->ExceptionCheck(jenv)) {
176 		(*jenv)->DeleteLocalRef(jenv, jattr);
177 		return (NULL);
178 	}
179 
180 	return (jattr);
181 }
182