ART: Add three Timer functions
Add support for GetAvailableProcessors, GetTimerInfo and GetTime.
Add tests.
Bug: 31455788
Test: m test-art-host-run-test-926-timers
Change-Id: I9629654349787e27dee686284567b5de70e138f2
diff --git a/runtime/openjdkjvmti/Android.bp b/runtime/openjdkjvmti/Android.bp
index 4bd21b4..42fed50 100644
--- a/runtime/openjdkjvmti/Android.bp
+++ b/runtime/openjdkjvmti/Android.bp
@@ -30,6 +30,7 @@
"ti_stack.cc",
"ti_redefine.cc",
"ti_thread.cc",
+ "ti_timers.cc",
"transform.cc"],
include_dirs: ["art/runtime"],
shared_libs: [
diff --git a/runtime/openjdkjvmti/OpenjdkJvmTi.cc b/runtime/openjdkjvmti/OpenjdkJvmTi.cc
index 3825c41..4aedec9 100644
--- a/runtime/openjdkjvmti/OpenjdkJvmTi.cc
+++ b/runtime/openjdkjvmti/OpenjdkJvmTi.cc
@@ -58,6 +58,7 @@
#include "ti_redefine.h"
#include "ti_stack.h"
#include "ti_thread.h"
+#include "ti_timers.h"
#include "transform.h"
// TODO Remove this at some point by annotating all the methods. It was put in to make the skeleton
@@ -1033,15 +1034,15 @@
}
static jvmtiError GetTimerInfo(jvmtiEnv* env, jvmtiTimerInfo* info_ptr) {
- return ERR(NOT_IMPLEMENTED);
+ return TimerUtil::GetTimerInfo(env, info_ptr);
}
static jvmtiError GetTime(jvmtiEnv* env, jlong* nanos_ptr) {
- return ERR(NOT_IMPLEMENTED);
+ return TimerUtil::GetTime(env, nanos_ptr);
}
static jvmtiError GetAvailableProcessors(jvmtiEnv* env, jint* processor_count_ptr) {
- return ERR(NOT_IMPLEMENTED);
+ return TimerUtil::GetAvailableProcessors(env, processor_count_ptr);
}
static jvmtiError AddToBootstrapClassLoaderSearch(jvmtiEnv* env, const char* segment) {
diff --git a/runtime/openjdkjvmti/ti_timers.cc b/runtime/openjdkjvmti/ti_timers.cc
new file mode 100644
index 0000000..ce4f551
--- /dev/null
+++ b/runtime/openjdkjvmti/ti_timers.cc
@@ -0,0 +1,81 @@
+/* Copyright (C) 2017 The Android Open Source Project
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This file implements interfaces from the file jvmti.h. This implementation
+ * is licensed under the same terms as the file jvmti.h. The
+ * copyright and license information for the file jvmti.h follows.
+ *
+ * Copyright (c) 2003, 2011, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 "ti_timers.h"
+
+#include <limits>
+
+#include <time.h>
+#include <unistd.h>
+
+#include "art_jvmti.h"
+#include "base/macros.h"
+
+namespace openjdkjvmti {
+
+jvmtiError TimerUtil::GetAvailableProcessors(jvmtiEnv* env ATTRIBUTE_UNUSED,
+ jint* processor_count_ptr) {
+ if (processor_count_ptr == nullptr) {
+ return ERR(NULL_POINTER);
+ }
+
+ *processor_count_ptr = static_cast<jint>(sysconf(_SC_NPROCESSORS_CONF));
+
+ return ERR(NONE);
+}
+
+jvmtiError TimerUtil::GetTimerInfo(jvmtiEnv* env ATTRIBUTE_UNUSED, jvmtiTimerInfo* info_ptr) {
+ if (info_ptr == nullptr) {
+ return ERR(NULL_POINTER);
+ }
+
+ info_ptr->max_value = static_cast<jlong>(std::numeric_limits<uint64_t>::max());
+ info_ptr->may_skip_forward = JNI_TRUE;
+ info_ptr->may_skip_backward = JNI_TRUE;
+ info_ptr->kind = jvmtiTimerKind::JVMTI_TIMER_ELAPSED;
+
+ return ERR(NONE);
+}
+
+jvmtiError TimerUtil::GetTime(jvmtiEnv* env ATTRIBUTE_UNUSED, jlong* nanos_ptr) {
+ if (nanos_ptr == nullptr) {
+ return ERR(NULL_POINTER);
+ }
+
+ // Use the same implementation as System.nanoTime.
+ struct timespec now;
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ *nanos_ptr = now.tv_sec * 1000000000LL + now.tv_nsec;
+
+ return ERR(NONE);
+}
+
+} // namespace openjdkjvmti
diff --git a/runtime/openjdkjvmti/ti_timers.h b/runtime/openjdkjvmti/ti_timers.h
new file mode 100644
index 0000000..6300678
--- /dev/null
+++ b/runtime/openjdkjvmti/ti_timers.h
@@ -0,0 +1,51 @@
+/* Copyright (C) 2017 The Android Open Source Project
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This file implements interfaces from the file jvmti.h. This implementation
+ * is licensed under the same terms as the file jvmti.h. The
+ * copyright and license information for the file jvmti.h follows.
+ *
+ * Copyright (c) 2003, 2011, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+#ifndef ART_RUNTIME_OPENJDKJVMTI_TI_TIMERS_H_
+#define ART_RUNTIME_OPENJDKJVMTI_TI_TIMERS_H_
+
+#include "jni.h"
+#include "jvmti.h"
+
+namespace openjdkjvmti {
+
+class TimerUtil {
+ public:
+ static jvmtiError GetAvailableProcessors(jvmtiEnv* env, jint* processor_count_ptr);
+
+ static jvmtiError GetTimerInfo(jvmtiEnv* env, jvmtiTimerInfo* info_ptr);
+
+ static jvmtiError GetTime(jvmtiEnv* env, jlong* nanos_ptr);
+};
+
+} // namespace openjdkjvmti
+
+#endif // ART_RUNTIME_OPENJDKJVMTI_TI_TIMERS_H_