--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/jni/jfrJniMethod.cpp Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,310 @@
+/*
+ * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
+ * 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 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.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "jni.h"
+#include "jvm.h"
+#include "jfr/jfr.hpp"
+#include "jfr/jfrEvents.hpp"
+#include "jfr/periodic/sampling/jfrThreadSampler.hpp"
+#include "jfr/recorder/jfrEventSetting.hpp"
+#include "jfr/recorder/jfrRecorder.hpp"
+#include "jfr/recorder/checkpoint/jfrMetadataEvent.hpp"
+#include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"
+#include "jfr/recorder/repository/jfrRepository.hpp"
+#include "jfr/recorder/repository/jfrChunkSizeNotifier.hpp"
+#include "jfr/recorder/repository/jfrChunkWriter.hpp"
+#include "jfr/recorder/service/jfrOptionSet.hpp"
+#include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"
+#include "jfr/recorder/stringpool/jfrStringPool.hpp"
+#include "jfr/jni/jfrGetAllEventClasses.hpp"
+#include "jfr/jni/jfrJavaSupport.hpp"
+#include "jfr/jni/jfrJniMethodRegistration.hpp"
+#include "jfr/instrumentation/jfrEventClassTransformer.hpp"
+#include "jfr/instrumentation/jfrJvmtiAgent.hpp"
+#include "jfr/leakprofiler/leakProfiler.hpp"
+#include "jfr/utilities/jfrJavaLog.hpp"
+#include "jfr/utilities/jfrTimeConverter.hpp"
+#include "jfr/utilities/jfrTime.hpp"
+#include "jfr/writers/jfrJavaEventWriter.hpp"
+#include "jfrfiles/jfrPeriodic.hpp"
+#include "logging/log.hpp"
+#include "memory/resourceArea.hpp"
+#include "runtime/interfaceSupport.inline.hpp"
+#include "runtime/mutexLocker.hpp"
+#include "runtime/os.hpp"
+#include "runtime/thread.hpp"
+#include "utilities/debug.hpp"
+
+#define NO_TRANSITION(result_type, header) extern "C" { result_type JNICALL header {
+#define NO_TRANSITION_END } }
+
+/*
+ * NO_TRANSITION entries
+ *
+ * Thread remains _thread_in_native
+ */
+
+NO_TRANSITION(void, jfr_register_natives(JNIEnv* env, jclass jvmclass))
+ JfrJniMethodRegistration register_native_methods(env);
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_is_enabled())
+ return Jfr::is_enabled() ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_is_disabled())
+ return Jfr::is_disabled() ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_is_started())
+ return JfrRecorder::is_created() ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jstring, jfr_get_pid(JNIEnv* env, jobject jvm))
+ char pid_buf[32] = { 0 };
+ jio_snprintf(pid_buf, sizeof(pid_buf), "%d", os::current_process_id());
+ jstring pid_string = env->NewStringUTF(pid_buf);
+ return pid_string; // exception pending if NULL
+NO_TRANSITION_END
+
+NO_TRANSITION(jlong, jfr_elapsed_frequency(JNIEnv* env, jobject jvm))
+ return JfrTime::frequency();
+NO_TRANSITION_END
+
+NO_TRANSITION(jlong, jfr_elapsed_counter(JNIEnv* env, jobject jvm))
+ return JfrTicks::now();
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_retransform_classes(JNIEnv* env, jobject jvm, jobjectArray classes))
+ JfrJvmtiAgent::retransform_classes(env, classes, JavaThread::thread_from_jni_environment(env));
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_enabled(JNIEnv* env, jobject jvm, jlong event_type_id, jboolean enabled))
+ JfrEventSetting::set_enabled(event_type_id, JNI_TRUE == enabled);
+ if (EventOldObjectSample::eventId == event_type_id) {
+ ThreadInVMfromNative transition(JavaThread::thread_from_jni_environment(env));
+ if (JNI_TRUE == enabled) {
+ LeakProfiler::start(JfrOptionSet::old_object_queue_size());
+ } else {
+ LeakProfiler::stop();
+ }
+ }
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_file_notification(JNIEnv* env, jobject jvm, jlong threshold))
+ JfrChunkSizeNotifier::set_chunk_size_threshold((size_t)threshold);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_sample_threads(JNIEnv* env, jobject jvm, jboolean sampleThreads))
+ JfrOptionSet::set_sample_threads(sampleThreads);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_stack_depth(JNIEnv* env, jobject jvm, jint depth))
+ JfrOptionSet::set_stackdepth((jlong)depth);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_stacktrace_enabled(JNIEnv* env, jobject jvm, jlong event_type_id, jboolean enabled))
+ JfrEventSetting::set_stacktrace(event_type_id, JNI_TRUE == enabled);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_global_buffer_count(JNIEnv* env, jobject jvm, jlong count))
+ JfrOptionSet::set_num_global_buffers(count);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_global_buffer_size(JNIEnv* env, jobject jvm, jlong size))
+JfrOptionSet::set_global_buffer_size(size);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_thread_buffer_size(JNIEnv* env, jobject jvm, jlong size))
+ JfrOptionSet::set_thread_buffer_size(size);
+NO_TRANSITION_END
+
+NO_TRANSITION(void, jfr_set_memory_size(JNIEnv* env, jobject jvm, jlong size))
+ JfrOptionSet::set_memory_size(size);
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_set_threshold(JNIEnv* env, jobject jvm, jlong event_type_id, jlong thresholdTicks))
+ return JfrEventSetting::set_threshold(event_type_id, thresholdTicks) ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_allow_event_retransforms(JNIEnv* env, jobject jvm))
+ return JfrOptionSet::allow_event_retransforms() ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_is_available(JNIEnv* env, jclass jvm))
+ return !Jfr::is_disabled() ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+NO_TRANSITION(jlong, jfr_get_epoch_address(JNIEnv* env, jobject jvm))
+ return JfrTraceIdEpoch::epoch_address();
+NO_TRANSITION_END
+
+NO_TRANSITION(jlong, jfr_get_unloaded_event_classes_count(JNIEnv* env, jobject jvm))
+ return JfrEventClasses::unloaded_event_classes_count();
+NO_TRANSITION_END
+
+NO_TRANSITION(jdouble, jfr_time_conv_factor(JNIEnv* env, jobject jvm))
+ return (jdouble)JfrTimeConverter::nano_to_counter_multiplier();
+NO_TRANSITION_END
+
+NO_TRANSITION(jboolean, jfr_set_cutoff(JNIEnv* env, jobject jvm, jlong event_type_id, jlong cutoff_ticks))
+ return JfrEventSetting::set_cutoff(event_type_id, cutoff_ticks) ? JNI_TRUE : JNI_FALSE;
+NO_TRANSITION_END
+
+
+/*
+ * JVM_ENTRY_NO_ENV entries
+ *
+ * Transitions:
+ * Entry: _thread_in_native -> _thread_in_vm
+ * Exit: _thread_in_vm -> _thread_in_native
+ *
+ * Current JavaThread available as "thread" variable
+ */
+
+JVM_ENTRY_NO_ENV(jboolean, jfr_create_jfr(JNIEnv* env, jobject jvm, jboolean simulate_failure))
+ if (JfrRecorder::is_created()) {
+ return JNI_TRUE;
+ }
+ if (!JfrRecorder::create(simulate_failure == JNI_TRUE)) {
+ JfrJavaSupport::throw_illegal_state_exception("Unable to start Jfr", thread);
+ return JNI_FALSE;
+ }
+ return JNI_TRUE;
+JVM_END
+
+JVM_ENTRY_NO_ENV(jboolean, jfr_destroy_jfr(JNIEnv* env, jobject jvm))
+ JfrRecorder::destroy();
+ return JNI_TRUE;
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_begin_recording(JNIEnv* env, jobject jvm))
+ if (JfrRecorder::is_recording()) {
+ return;
+ }
+ JfrRecorder::start_recording();
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_end_recording(JNIEnv* env, jobject jvm))
+ if (!JfrRecorder::is_recording()) {
+ return;
+ }
+ JfrRecorder::stop_recording();
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jboolean, jfr_emit_event(JNIEnv* env, jobject jvm, jlong eventTypeId, jlong timeStamp, jlong when))
+ JfrPeriodicEventSet::requestEvent((JfrEventId)eventTypeId);
+ return thread->has_pending_exception() ? JNI_FALSE : JNI_TRUE;
+JVM_END
+
+JVM_ENTRY_NO_ENV(jobject, jfr_get_all_event_classes(JNIEnv* env, jobject jvm))
+ return JfrEventClasses::get_all_event_classes(thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jlong, jfr_class_id(JNIEnv* env, jclass jvm, jclass jc))
+ return JfrTraceId::use(jc);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jlong, jfr_stacktrace_id(JNIEnv* env, jobject jvm, jint skip))
+ return JfrStackTraceRepository::record(thread, skip);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_log(JNIEnv* env, jobject jvm, jint tag_set, jint level, jstring message))
+ JfrJavaLog::log(tag_set, level, message, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_subscribe_log_level(JNIEnv* env, jobject jvm, jobject log_tag, jint id))
+ JfrJavaLog::subscribe_log_level(log_tag, id, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_set_output(JNIEnv* env, jobject jvm, jstring path))
+ JfrRepository::set_chunk_path(path, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_set_method_sampling_interval(JNIEnv* env, jobject jvm, jlong type, jlong intervalMillis))
+ if (intervalMillis < 0) {
+ intervalMillis = 0;
+ }
+ JfrEventId typed_event_id = (JfrEventId)type;
+ assert(EventExecutionSample::eventId == typed_event_id || EventNativeMethodSample::eventId == typed_event_id, "invariant");
+ if (intervalMillis > 0) {
+ JfrEventSetting::set_enabled(typed_event_id, true); // ensure sampling event is enabled
+ }
+ if (EventExecutionSample::eventId == type) {
+ JfrThreadSampling::set_java_sample_interval(intervalMillis);
+ } else {
+ JfrThreadSampling::set_native_sample_interval(intervalMillis);
+ }
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_store_metadata_descriptor(JNIEnv* env, jobject jvm, jbyteArray descriptor))
+ JfrMetadataEvent::update(descriptor);
+JVM_END
+
+// trace thread id for a thread object
+JVM_ENTRY_NO_ENV(jlong, jfr_id_for_thread(JNIEnv* env, jobject jvm, jobject t))
+ return JfrJavaSupport::jfr_thread_id(t);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jobject, jfr_get_event_writer(JNIEnv* env, jclass cls))
+ return JfrJavaEventWriter::event_writer(thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jobject, jfr_new_event_writer(JNIEnv* env, jclass cls))
+ return JfrJavaEventWriter::new_event_writer(thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jboolean, jfr_event_writer_flush(JNIEnv* env, jclass cls, jobject writer, jint used_size, jint requested_size))
+ return JfrJavaEventWriter::flush(writer, used_size, requested_size, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_set_repository_location(JNIEnv* env, jobject repo, jstring location))
+ return JfrRepository::set_path(location, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_uncaught_exception(JNIEnv* env, jobject jvm, jobject t, jthrowable throwable))
+ JfrJavaSupport::uncaught_exception(throwable, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_abort(JNIEnv* env, jobject jvm, jstring errorMsg))
+ JfrJavaSupport::abort(errorMsg, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jlong, jfr_type_id(JNIEnv* env, jobject jvm, jclass jc))
+ return JfrTraceId::get(jc);
+JVM_END
+
+JVM_ENTRY_NO_ENV(jboolean, jfr_add_string_constant(JNIEnv* env, jclass jvm, jboolean epoch, jlong id, jstring string))
+ return JfrStringPool::add(epoch == JNI_TRUE, id, string, thread);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_set_force_instrumentation(JNIEnv* env, jobject jvm, jboolean force_instrumentation))
+ JfrEventClassTransformer::set_force_instrumentation(force_instrumentation == JNI_TRUE ? true : false);
+JVM_END
+
+JVM_ENTRY_NO_ENV(void, jfr_emit_old_object_samples(JNIEnv* env, jobject jvm, jlong cutoff_ticks, jboolean emit_all))
+ LeakProfiler::emit_events(cutoff_ticks, emit_all == JNI_TRUE);
+JVM_END