10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "classfile/classLoaderDataGraph.hpp"
26 #include "classfile/dictionary.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "gc/shared/collectedHeap.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/klass.inline.hpp"
31 #include "prims/jvmtiGetLoadedClasses.hpp"
32 #include "runtime/handles.inline.hpp"
33 #include "runtime/javaThread.hpp"
34 #include "runtime/jniHandles.inline.hpp"
35 #include "utilities/stack.inline.hpp"
36
37 // The closure for GetLoadedClasses
38 class LoadedClassesClosure : public KlassClosure {
39 private:
40 Stack<jclass, mtInternal> _classStack;
41 JvmtiEnv* _env;
42 Thread* _cur_thread;
43 bool _dictionary_walk;
44
45 int extract(jclass* result_list) {
46 // The size of the Stack will be 0 after extract, so get it here
47 int count = (int)_classStack.size();
48 int i = count;
49
60 int get_count() {
61 return (int)_classStack.size();
62 }
63
64 public:
65 LoadedClassesClosure(JvmtiEnv* env, bool dictionary_walk) :
66 _env(env),
67 _cur_thread(Thread::current()),
68 _dictionary_walk(dictionary_walk) {
69 }
70
71 void do_klass(Klass* k) {
72 // Collect all jclasses
73 _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, k->java_mirror())));
74 if (_dictionary_walk) {
75 // Collect array classes this way when walking the dictionary (because array classes are
76 // not in the dictionary).
77 for (Klass* l = k->array_klass_or_null(); l != nullptr; l = l->array_klass_or_null()) {
78 _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, l->java_mirror())));
79 }
80 }
81 }
82
83 jvmtiError get_result(JvmtiEnv *env, jint* classCountPtr, jclass** classesPtr) {
84 // Return results by extracting the collected contents into a list
85 // allocated via JvmtiEnv
86 jclass* result_list;
87 jvmtiError error = env->Allocate(get_count() * sizeof(jclass),
88 (unsigned char**)&result_list);
89
90 if (error == JVMTI_ERROR_NONE) {
91 int count = extract(result_list);
92 *classCountPtr = count;
93 *classesPtr = result_list;
94 }
95 return error;
96 }
97 };
98
99 jvmtiError
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "classfile/classLoaderDataGraph.hpp"
26 #include "classfile/dictionary.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "gc/shared/collectedHeap.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/inlineKlass.hpp"
31 #include "oops/klass.inline.hpp"
32 #include "prims/jvmtiGetLoadedClasses.hpp"
33 #include "runtime/handles.inline.hpp"
34 #include "runtime/javaThread.hpp"
35 #include "runtime/jniHandles.inline.hpp"
36 #include "utilities/stack.inline.hpp"
37
38 // The closure for GetLoadedClasses
39 class LoadedClassesClosure : public KlassClosure {
40 private:
41 Stack<jclass, mtInternal> _classStack;
42 JvmtiEnv* _env;
43 Thread* _cur_thread;
44 bool _dictionary_walk;
45
46 int extract(jclass* result_list) {
47 // The size of the Stack will be 0 after extract, so get it here
48 int count = (int)_classStack.size();
49 int i = count;
50
61 int get_count() {
62 return (int)_classStack.size();
63 }
64
65 public:
66 LoadedClassesClosure(JvmtiEnv* env, bool dictionary_walk) :
67 _env(env),
68 _cur_thread(Thread::current()),
69 _dictionary_walk(dictionary_walk) {
70 }
71
72 void do_klass(Klass* k) {
73 // Collect all jclasses
74 _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, k->java_mirror())));
75 if (_dictionary_walk) {
76 // Collect array classes this way when walking the dictionary (because array classes are
77 // not in the dictionary).
78 for (Klass* l = k->array_klass_or_null(); l != nullptr; l = l->array_klass_or_null()) {
79 _classStack.push((jclass) _env->jni_reference(Handle(_cur_thread, l->java_mirror())));
80 }
81 // CMH flat arrays (InlineKlass)
82 }
83 }
84
85 jvmtiError get_result(JvmtiEnv *env, jint* classCountPtr, jclass** classesPtr) {
86 // Return results by extracting the collected contents into a list
87 // allocated via JvmtiEnv
88 jclass* result_list;
89 jvmtiError error = env->Allocate(get_count() * sizeof(jclass),
90 (unsigned char**)&result_list);
91
92 if (error == JVMTI_ERROR_NONE) {
93 int count = extract(result_list);
94 *classCountPtr = count;
95 *classesPtr = result_list;
96 }
97 return error;
98 }
99 };
100
101 jvmtiError
|