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/*
* Copyright (c) 2014, 2022, 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 "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/jfrChunkRotation.hpp"
#include "jfr/recorder/repository/jfrChunkWriter.hpp"
#include "jfr/recorder/repository/jfrEmergencyDump.hpp"
#include "jfr/recorder/service/jfrEventThrottler.hpp"
#include "jfr/recorder/service/jfrOptionSet.hpp"
#include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"
#include "jfr/recorder/stringpool/jfrStringPool.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/support/jfrJdkJfrEvent.hpp"
#include "jfr/support/jfrKlassUnloading.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 "jfrfiles/jfrTypes.hpp"
#include "jni.h"
#include "jvm.h"
#include "logging/log.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/javaThread.inline.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/os.hpp"
#include "utilities/debug.hpp"
#ifdef LINUX
#include "osContainer_linux.hpp"
#include "os_linux.hpp"
#endif
#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))
JfrChunkRotation::set_threshold(threshold);
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_unloaded_event_classes_count(JNIEnv* env, jobject jvm))
return JfrKlassUnloading::event_class_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
NO_TRANSITION(jboolean, jfr_set_throttle(JNIEnv* env, jobject jvm, jlong event_type_id, jlong event_sample_size, jlong period_ms))
JfrEventThrottler::configure(static_cast<JfrEventId>(event_type_id), event_sample_size, period_ms);
return JNI_TRUE;
NO_TRANSITION_END
NO_TRANSITION(jboolean, jfr_should_rotate_disk(JNIEnv* env, jobject jvm))
return JfrChunkRotation::should_rotate() ? JNI_TRUE : JNI_FALSE;
NO_TRANSITION_END
NO_TRANSITION(jlong, jfr_get_type_id_from_string(JNIEnv * env, jobject jvm, jstring type))
const char* type_name = env->GetStringUTFChars(type, NULL);
jlong id = JfrType::name_to_id(type_name);
env->ReleaseStringUTFChars(type, type_name);
return id;
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)) {
if (!thread->has_pending_exception()) {
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(jboolean, jfr_is_recording(JNIEnv * env, jobject jvm))
return JfrRecorder::is_recording() ? JNI_TRUE : JNI_FALSE;
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(void, jfr_mark_chunk_final(JNIEnv * env, jobject jvm))
JfrRepository::mark_chunk_final();
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_emit_event(JNIEnv* env, jobject jvm, jlong event_type_id, jlong timestamp, jlong periodic_type))
JfrPeriodicEventSet::requestEvent((JfrEventId)event_type_id, timestamp, static_cast<PeriodicType>(periodic_type));
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 JdkJfrEvent::get_all_klasses(thread);
JVM_END
JVM_ENTRY_NO_ENV(jlong, jfr_class_id(JNIEnv* env, jclass jvm, jclass jc))
return JfrTraceId::load(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_log_event(JNIEnv* env, jobject jvm, jint level, jobjectArray lines, jboolean system))
JfrJavaLog::log_event(env, level, lines, system == JNI_TRUE, 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_period(JNIEnv* env, jobject jvm, jlong type, jlong periodMillis))
if (periodMillis < 0) {
periodMillis = 0;
}
JfrEventId typed_event_id = (JfrEventId)type;
assert(EventExecutionSample::eventId == typed_event_id || EventNativeMethodSample::eventId == typed_event_id, "invariant");
JfrEventSetting::set_enabled(typed_event_id, periodMillis > 0);
if (EventExecutionSample::eventId == type) {
JfrThreadSampling::set_java_sample_period(periodMillis);
} else {
JfrThreadSampling::set_native_sample_period(periodMillis);
}
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(thread, 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_flush(JNIEnv* env, jobject jvm))
JfrRepository::flush(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
NO_TRANSITION(void, jfr_set_dump_path(JNIEnv* env, jobject jvm, jstring dumppath))
if (dumppath == NULL) {
JfrEmergencyDump::set_dump_path(NULL);
} else {
const char* dump_path = env->GetStringUTFChars(dumppath, NULL);
JfrEmergencyDump::set_dump_path(dump_path);
env->ReleaseStringUTFChars(dumppath, dump_path);
}
NO_TRANSITION_END
NO_TRANSITION(jstring, jfr_get_dump_path(JNIEnv* env, jobject jvm))
return env->NewStringUTF(JfrEmergencyDump::get_dump_path());
NO_TRANSITION_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::load_raw(jc);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_add_string_constant(JNIEnv* env, jclass jvm, jlong id, jstring string))
return JfrStringPool::add(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);
JVM_END
JVM_ENTRY_NO_ENV(void, jfr_emit_old_object_samples(JNIEnv* env, jobject jvm, jlong cutoff_ticks, jboolean emit_all, jboolean skip_bfs))
LeakProfiler::emit_events(cutoff_ticks, emit_all == JNI_TRUE, skip_bfs == JNI_TRUE);
JVM_END
JVM_ENTRY_NO_ENV(void, jfr_exclude_thread(JNIEnv* env, jobject jvm, jobject t))
JfrJavaSupport::exclude(thread, t);
JVM_END
JVM_ENTRY_NO_ENV(void, jfr_include_thread(JNIEnv* env, jobject jvm, jobject t))
JfrJavaSupport::include(thread, t);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_is_thread_excluded(JNIEnv* env, jobject jvm, jobject t))
return JfrJavaSupport::is_excluded(t);
JVM_END
JVM_ENTRY_NO_ENV(jlong, jfr_chunk_start_nanos(JNIEnv* env, jobject jvm))
return JfrRepository::current_chunk_start_nanos();
JVM_END
JVM_ENTRY_NO_ENV(jobject, jfr_get_configuration(JNIEnv * env, jobject jvm, jobject clazz))
return JfrJavaSupport::get_configuration(clazz, thread);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_set_configuration(JNIEnv * env, jobject jvm, jobject clazz, jobject configuration))
return JfrJavaSupport::set_configuration(clazz, configuration, thread);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_is_class_excluded(JNIEnv * env, jobject jvm, jclass clazz))
return JdkJfrEvent::is_excluded(clazz);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_is_class_instrumented(JNIEnv* env, jobject jvm, jclass clazz))
return JfrJavaSupport::is_instrumented(clazz, thread);
JVM_END
JVM_ENTRY_NO_ENV(jboolean, jfr_is_containerized(JNIEnv* env, jobject jvm))
#ifdef LINUX
return OSContainer::is_containerized();
#else
return false;
#endif
JVM_END
JVM_ENTRY_NO_ENV(jlong, jfr_host_total_memory(JNIEnv* env, jobject jvm))
#ifdef LINUX
// We want the host memory, not the container limit.
// os::physical_memory() would return the container limit.
return os::Linux::physical_memory();
#else
return os::physical_memory();
#endif
JVM_END
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