1 /*
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
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 "precompiled.hpp"
26 #include "jfr/jni/jfrJniMethod.hpp"
27 #include "jfr/jni/jfrJniMethodRegistration.hpp"
28 #include "jfr/utilities/jfrLog.hpp"
29 #include "runtime/interfaceSupport.hpp"
30 #include "runtime/thread.hpp"
31 #include "utilities/exceptions.hpp"
32
33 JfrJniMethodRegistration::JfrJniMethodRegistration(JNIEnv* env) {
34 assert(env != NULL, "invariant");
35 jclass jfr_clz = env->FindClass("jdk/jfr/internal/JVM");
36 if (jfr_clz != NULL) {
37 JNINativeMethod method[] = {
38 (char*)"beginRecording", (char*)"()V", (void*)jfr_begin_recording,
39 (char*)"endRecording", (char*)"()V", (void*)jfr_end_recording,
40 (char*)"counterTime", (char*)"()J", (void*)jfr_elapsed_counter,
41 (char*)"createJFR", (char*)"(Z)Z", (void*)jfr_create_jfr,
42 (char*)"destroyJFR", (char*)"()Z", (void*)jfr_destroy_jfr,
43 (char*)"emitEvent", (char*)"(JJJ)Z", (void*)jfr_emit_event,
44 (char*)"getAllEventClasses", (char*)"()Ljava/util/List;", (void*)jfr_get_all_event_classes,
45 (char*)"getClassIdNonIntrinsic", (char*)"(Ljava/lang/Class;)J", (void*)jfr_class_id,
46 (char*)"getPid", (char*)"()Ljava/lang/String;", (void*)jfr_get_pid,
47 (char*)"getStackTraceId", (char*)"(I)J", (void*)jfr_stacktrace_id,
48 (char*)"getThreadId", (char*)"(Ljava/lang/Thread;)J", (void*)jfr_id_for_thread,
49 (char*)"getTicksFrequency", (char*)"()J", (void*)jfr_elapsed_frequency,
50 (char*)"subscribeLogLevel", (char*)"(Ljdk/jfr/internal/LogTag;I)V", (void*)jfr_subscribe_log_level,
51 (char*)"log", (char*)"(IILjava/lang/String;)V", (void*)jfr_log,
52 (char*)"retransformClasses", (char*)"([Ljava/lang/Class;)V", (void*)jfr_retransform_classes,
53 (char*)"setEnabled", (char*)"(JZ)V", (void*)jfr_set_enabled,
54 (char*)"setFileNotification", (char*)"(J)V", (void*)jfr_set_file_notification,
55 (char*)"setGlobalBufferCount", (char*)"(J)V", (void*)jfr_set_global_buffer_count,
56 (char*)"setGlobalBufferSize", (char*)"(J)V", (void*)jfr_set_global_buffer_size,
57 (char*)"setMethodSamplingInterval", (char*)"(JJ)V", (void*)jfr_set_method_sampling_interval,
58 (char*)"setOutput", (char*)"(Ljava/lang/String;)V", (void*)jfr_set_output,
59 (char*)"setSampleThreads", (char*)"(Z)V", (void*)jfr_set_sample_threads,
60 (char*)"setStackDepth", (char*)"(I)V", (void*)jfr_set_stack_depth,
61 (char*)"setStackTraceEnabled", (char*)"(JZ)V", (void*)jfr_set_stacktrace_enabled,
62 (char*)"setThreadBufferSize", (char*)"(J)V", (void*)jfr_set_thread_buffer_size,
63 (char*)"setMemorySize", (char*)"(J)V", (void*)jfr_set_memory_size,
64 (char*)"setThreshold", (char*)"(JJ)Z", (void*)jfr_set_threshold,
65 (char*)"storeMetadataDescriptor", (char*)"([B)V", (void*)jfr_store_metadata_descriptor,
66 (char*)"getAllowedToDoEventRetransforms", (char*)"()Z", (void*)jfr_allow_event_retransforms,
67 (char*)"isAvailable", (char*)"()Z", (void*)jfr_is_available,
68 (char*)"getTimeConversionFactor", (char*)"()D", (void*)jfr_time_conv_factor,
69 (char*)"getTypeId", (char*)"(Ljava/lang/Class;)J", (void*)jfr_type_id,
70 (char*)"getEventWriter", (char*)"()Ljava/lang/Object;", (void*)jfr_get_event_writer,
71 (char*)"newEventWriter", (char*)"()Ljdk/jfr/internal/EventWriter;", (void*)jfr_new_event_writer,
72 (char*)"flush", (char*)"(Ljdk/jfr/internal/EventWriter;II)Z", (void*)jfr_event_writer_flush,
73 (char*)"setRepositoryLocation", (char*)"(Ljava/lang/String;)V", (void*)jfr_set_repository_location,
74 (char*)"abort", (char*)"(Ljava/lang/String;)V", (void*)jfr_abort,
75 (char*)"getEpochAddress", (char*)"()J",(void*)jfr_get_epoch_address,
76 (char*)"addStringConstant", (char*)"(ZJLjava/lang/String;)Z", (void*)jfr_add_string_constant,
77 (char*)"uncaughtException", (char*)"(Ljava/lang/Thread;Ljava/lang/Throwable;)V", (void*)jfr_uncaught_exception,
78 (char*)"setForceInstrumentation", (char*)"(Z)V", (void*)jfr_set_force_instrumentation,
79 (char*)"getUnloadedEventClassCount", (char*)"()J", (void*)jfr_get_unloaded_event_classes_count,
80 (char*)"setCutoff", (char*)"(JJ)Z", (void*)jfr_set_cutoff,
81 (char*)"emitOldObjectSamples", (char*)"(JZ)V", (void*)jfr_emit_old_object_samples
82 };
83
84 const size_t method_array_length = sizeof(method) / sizeof(JNINativeMethod);
85 if (env->RegisterNatives(jfr_clz, method, (jint)method_array_length) != JNI_OK) {
86 JavaThread* jt = JavaThread::thread_from_jni_environment(env);
87 assert(jt != NULL, "invariant");
88 assert(jt->thread_state() == _thread_in_native, "invariant");
89 ThreadInVMfromNative transition(jt);
90 log_error(jfr, system)("RegisterNatives for JVM class failed!");
91 }
92 env->DeleteLocalRef(jfr_clz);
93 }
94 }