ART: Add forced garbage collection
Add ForceGarbageCollection support to the agent interface.
Add a test.
Test: m test-art-host-run-test-913-heaps
Bug: 32516268
Change-Id: Iaa97520d1b9e4b0adf088ccdf9712193c485b7c5
diff --git a/runtime/openjdkjvmti/OpenjdkJvmTi.cc b/runtime/openjdkjvmti/OpenjdkJvmTi.cc
index 50b50d6..d867727 100644
--- a/runtime/openjdkjvmti/OpenjdkJvmTi.cc
+++ b/runtime/openjdkjvmti/OpenjdkJvmTi.cc
@@ -346,7 +346,7 @@
}
static jvmtiError ForceGarbageCollection(jvmtiEnv* env) {
- return ERR(NOT_IMPLEMENTED);
+ return HeapUtil::ForceGarbageCollection(env);
}
static jvmtiError IterateOverObjectsReachableFromObject(
diff --git a/runtime/openjdkjvmti/heap.cc b/runtime/openjdkjvmti/heap.cc
index 1799e19..df33abd 100644
--- a/runtime/openjdkjvmti/heap.cc
+++ b/runtime/openjdkjvmti/heap.cc
@@ -210,4 +210,10 @@
return ERR(NONE);
}
+jvmtiError HeapUtil::ForceGarbageCollection(jvmtiEnv* env ATTRIBUTE_UNUSED) {
+ art::Runtime::Current()->GetHeap()->CollectGarbage(false);
+
+ return ERR(NONE);
+}
+
} // namespace openjdkjvmti
diff --git a/runtime/openjdkjvmti/heap.h b/runtime/openjdkjvmti/heap.h
index b6becb9..b0c7f6f 100644
--- a/runtime/openjdkjvmti/heap.h
+++ b/runtime/openjdkjvmti/heap.h
@@ -36,6 +36,8 @@
const jvmtiHeapCallbacks* callbacks,
const void* user_data);
+ static jvmtiError ForceGarbageCollection(jvmtiEnv* env);
+
ObjectTagTable* GetTags() {
return tags_;
}
diff --git a/test/913-heaps/build b/test/913-heaps/build
new file mode 100755
index 0000000..898e2e5
--- /dev/null
+++ b/test/913-heaps/build
@@ -0,0 +1,17 @@
+#!/bin/bash
+#
+# Copyright 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+./default-build "$@" --experimental agents
diff --git a/test/913-heaps/expected.txt b/test/913-heaps/expected.txt
new file mode 100644
index 0000000..a127f4e
--- /dev/null
+++ b/test/913-heaps/expected.txt
@@ -0,0 +1,4 @@
+---
+false false
+---
+true true
diff --git a/test/913-heaps/heaps.cc b/test/913-heaps/heaps.cc
new file mode 100644
index 0000000..437779a
--- /dev/null
+++ b/test/913-heaps/heaps.cc
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "heaps.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "base/macros.h"
+#include "jni.h"
+#include "openjdkjvmti/jvmti.h"
+
+#include "ti-agent/common_load.h"
+
+namespace art {
+namespace Test913Heaps {
+
+extern "C" JNIEXPORT void JNICALL Java_Main_forceGarbageCollection(JNIEnv* env ATTRIBUTE_UNUSED,
+ jclass klass ATTRIBUTE_UNUSED) {
+ jvmtiError ret = jvmti_env->ForceGarbageCollection();
+ if (ret != JVMTI_ERROR_NONE) {
+ char* err;
+ jvmti_env->GetErrorName(ret, &err);
+ printf("Error forcing a garbage collection: %s\n", err);
+ }
+}
+
+// Don't do anything
+jint OnLoad(JavaVM* vm,
+ char* options ATTRIBUTE_UNUSED,
+ void* reserved ATTRIBUTE_UNUSED) {
+ if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0)) {
+ printf("Unable to get jvmti env!\n");
+ return 1;
+ }
+ return 0;
+}
+
+} // namespace Test913Heaps
+} // namespace art
diff --git a/test/913-heaps/heaps.h b/test/913-heaps/heaps.h
new file mode 100644
index 0000000..bd828ac
--- /dev/null
+++ b/test/913-heaps/heaps.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_TEST_913_HEAPS_HEAPS_H_
+#define ART_TEST_913_HEAPS_HEAPS_H_
+
+#include <jni.h>
+
+namespace art {
+namespace Test913Heaps {
+
+jint OnLoad(JavaVM* vm, char* options, void* reserved);
+
+} // namespace Test913Heaps
+} // namespace art
+
+#endif // ART_TEST_913_HEAPS_HEAPS_H_
diff --git a/test/913-heaps/info.txt b/test/913-heaps/info.txt
new file mode 100644
index 0000000..875a5f6
--- /dev/null
+++ b/test/913-heaps/info.txt
@@ -0,0 +1 @@
+Tests basic functions in the jvmti plugin.
diff --git a/test/913-heaps/run b/test/913-heaps/run
new file mode 100755
index 0000000..7bd8cbd
--- /dev/null
+++ b/test/913-heaps/run
@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# Copyright 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+plugin=libopenjdkjvmtid.so
+agent=libtiagentd.so
+lib=tiagentd
+if [[ "$@" == *"-O"* ]]; then
+ agent=libtiagent.so
+ plugin=libopenjdkjvmti.so
+ lib=tiagent
+fi
+
+if [[ "$@" == *"--jvm"* ]]; then
+ arg="jvm"
+else
+ arg="art"
+fi
+
+if [[ "$@" != *"--debuggable"* ]]; then
+ other_args=" -Xcompiler-option --debuggable "
+else
+ other_args=""
+fi
+
+./default-run "$@" --experimental agents \
+ --experimental runtime-plugins \
+ --runtime-option -agentpath:${agent}=913-heaps,${arg} \
+ --android-runtime-option -Xplugin:${plugin} \
+ ${other_args} \
+ --args ${lib}
diff --git a/test/913-heaps/src/Main.java b/test/913-heaps/src/Main.java
new file mode 100644
index 0000000..0d1c92b
--- /dev/null
+++ b/test/913-heaps/src/Main.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.util.ArrayList;
+
+public class Main {
+ public static void main(String[] args) throws Exception {
+ System.loadLibrary(args[1]);
+
+ doTest();
+ }
+
+ public static void doTest() throws Exception {
+ setupGcCallback();
+
+ enableGcTracking(true);
+ run();
+ enableGcTracking(false);
+ }
+
+ private static void run() {
+ printStats();
+ forceGarbageCollection();
+ printStats();
+ }
+
+ private static void printStats() {
+ System.out.println("---");
+ int s = getGcStarts();
+ int f = getGcFinishes();
+ System.out.println((s > 0) + " " + (f > 0));
+ }
+
+ private static native void setupGcCallback();
+ private static native void enableGcTracking(boolean enable);
+ private static native int getGcStarts();
+ private static native int getGcFinishes();
+ private static native void forceGarbageCollection();
+}
diff --git a/test/Android.bp b/test/Android.bp
index af70486..bdb7f80 100644
--- a/test/Android.bp
+++ b/test/Android.bp
@@ -256,6 +256,7 @@
"910-methods/methods.cc",
"911-get-stack-trace/stack_trace.cc",
"912-classes/classes.cc",
+ "913-heaps/heaps.cc",
],
shared_libs: [
"libbase",
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index 2251b7e..02ee444 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -374,13 +374,14 @@
# * 137-cfi needs to unwind a second forked process. We're using a primitive sleep to wait till we
# hope the second process got into the expected state. The slowness of gcstress makes this bad.
# * 908-gc-start-finish expects GCs only to be run at clear points. The reduced heap size makes
-# this non-deterministic.
+# this non-deterministic. Same for 913.
# * 961-default-iface-resolution-gen and 964-default-iface-init-genare very long tests that often
# will take more than the timeout to run when gcstress is enabled. This is because gcstress
# slows down allocations significantly which these tests do a lot.
TEST_ART_BROKEN_GCSTRESS_RUN_TESTS := \
137-cfi \
908-gc-start-finish \
+ 913-heaps \
961-default-iface-resolution-gen \
964-default-iface-init-gen \
diff --git a/test/ti-agent/common_load.cc b/test/ti-agent/common_load.cc
index 4db953c..a959482 100644
--- a/test/ti-agent/common_load.cc
+++ b/test/ti-agent/common_load.cc
@@ -36,6 +36,7 @@
#include "910-methods/methods.h"
#include "911-get-stack-trace/stack_trace.h"
#include "912-classes/classes.h"
+#include "913-heaps/heaps.h"
namespace art {
@@ -64,6 +65,7 @@
{ "910-methods", Test910Methods::OnLoad, nullptr },
{ "911-get-stack-trace", Test911GetStackTrace::OnLoad, nullptr },
{ "912-classes", Test912Classes::OnLoad, nullptr },
+ { "913-heaps", Test913Heaps::OnLoad, nullptr },
};
static AgentLib* FindAgent(char* name) {
