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-rw-r--r--TEST_MAPPING15
-rw-r--r--test/2044-get-stack-traces/Android.bp40
-rw-r--r--test/2044-get-stack-traces/expected-stderr.txt0
-rw-r--r--test/2044-get-stack-traces/expected-stdout.txt8
-rw-r--r--test/2044-get-stack-traces/info.txt4
-rw-r--r--test/2044-get-stack-traces/src/Main.java83
6 files changed, 150 insertions, 0 deletions
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 91a19d2d08..002d6419db 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -407,6 +407,9 @@
"name": "art-run-test-2043-reference-pauses[com.google.android.art.apex]"
},
{
+ "name": "art-run-test-2044-get-stack-traces[com.google.android.art.apex]"
+ },
+ {
"name": "art-run-test-2231-checker-heap-poisoning[com.google.android.art.apex]"
},
{
@@ -1711,6 +1714,9 @@
"name": "art-run-test-2043-reference-pauses"
},
{
+ "name": "art-run-test-2044-get-stack-traces"
+ },
+ {
"name": "art-run-test-2231-checker-heap-poisoning"
},
{
@@ -3006,6 +3012,15 @@
"name": "art-run-test-2042-checker-dce-always-throw"
},
{
+ "name": "art-run-test-2042-reference-processing"
+ },
+ {
+ "name": "art-run-test-2043-reference-pauses"
+ },
+ {
+ "name": "art-run-test-2044-get-stack-traces"
+ },
+ {
"name": "art-run-test-2231-checker-heap-poisoning"
},
{
diff --git a/test/2044-get-stack-traces/Android.bp b/test/2044-get-stack-traces/Android.bp
new file mode 100644
index 0000000000..79aea7c7ff
--- /dev/null
+++ b/test/2044-get-stack-traces/Android.bp
@@ -0,0 +1,40 @@
+// Generated by `regen-test-files`. Do not edit manually.
+
+// Build rules for ART run-test `2044-get-stack-traces`.
+
+package {
+ // See: http://go/android-license-faq
+ // A large-scale-change added 'default_applicable_licenses' to import
+ // all of the 'license_kinds' from "art_license"
+ // to get the below license kinds:
+ // SPDX-license-identifier-Apache-2.0
+ default_applicable_licenses: ["art_license"],
+}
+
+// Test's Dex code.
+java_test {
+ name: "art-run-test-2044-get-stack-traces",
+ defaults: ["art-run-test-defaults"],
+ test_config_template: ":art-run-test-target-template",
+ srcs: ["src/**/*.java"],
+ data: [
+ ":art-run-test-2044-get-stack-traces-expected-stdout",
+ ":art-run-test-2044-get-stack-traces-expected-stderr",
+ ],
+}
+
+// Test's expected standard output.
+genrule {
+ name: "art-run-test-2044-get-stack-traces-expected-stdout",
+ out: ["art-run-test-2044-get-stack-traces-expected-stdout.txt"],
+ srcs: ["expected-stdout.txt"],
+ cmd: "cp -f $(in) $(out)",
+}
+
+// Test's expected standard error.
+genrule {
+ name: "art-run-test-2044-get-stack-traces-expected-stderr",
+ out: ["art-run-test-2044-get-stack-traces-expected-stderr.txt"],
+ srcs: ["expected-stderr.txt"],
+ cmd: "cp -f $(in) $(out)",
+}
diff --git a/test/2044-get-stack-traces/expected-stderr.txt b/test/2044-get-stack-traces/expected-stderr.txt
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/2044-get-stack-traces/expected-stderr.txt
diff --git a/test/2044-get-stack-traces/expected-stdout.txt b/test/2044-get-stack-traces/expected-stdout.txt
new file mode 100644
index 0000000000..d396083041
--- /dev/null
+++ b/test/2044-get-stack-traces/expected-stdout.txt
@@ -0,0 +1,8 @@
+Starting
+Starting helper
+Starting helper
+Starting helper
+Starting helper
+Starting helper
+Finished worker stack traces
+Finished
diff --git a/test/2044-get-stack-traces/info.txt b/test/2044-get-stack-traces/info.txt
new file mode 100644
index 0000000000..f9cac7aba9
--- /dev/null
+++ b/test/2044-get-stack-traces/info.txt
@@ -0,0 +1,4 @@
+Tests multiple simultaneous calls to Thread.getStackTrace()
+
+This is a stress test for code under suspicion in the context of b/234542166
+and others.
diff --git a/test/2044-get-stack-traces/src/Main.java b/test/2044-get-stack-traces/src/Main.java
new file mode 100644
index 0000000000..d17e7c18f4
--- /dev/null
+++ b/test/2044-get-stack-traces/src/Main.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2022 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.lang.ref.Reference;
+import java.lang.ref.WeakReference;
+import java.lang.ref.SoftReference;
+import java.math.BigInteger;
+import java.util.ArrayList;
+
+/**
+ * We construct a main thread and worker threads, each retrieving stack traces
+ * from the other. Since there are multiple workers, we may get a large number
+ * of simultaneous stack trace attempts.
+ */
+public class Main {
+ static final int NUM_THREADS = 5;
+ static Thread mainThread;
+ static volatile boolean pleaseStop = false;
+
+ private static void getTrace(Thread t) {
+ StackTraceElement trace[] = t.getStackTrace();
+ if (trace.length < 1 || trace.length > 20) {
+ System.out.println("Stack trace for " + t.getName() + " has size " + trace.length);
+ for (StackTraceElement e : trace) {
+ System.out.println(e.toString());
+ }
+ }
+ }
+
+ /**
+ * Repeatedly get and minimally check stack trace of main thread.
+ */
+ static Runnable traceGetter = new Runnable() {
+ public void run() {
+ System.out.println("Starting helper");
+ while (!pleaseStop) {
+ getTrace(mainThread);
+ }
+ }
+ };
+
+ public static void main(String[] args) throws Exception {
+ System.out.println("Starting");
+ Thread[] t = new Thread[NUM_THREADS];
+ mainThread = Thread.currentThread();
+ for (int i = 0; i < NUM_THREADS; ++i) {
+ t[i] = new Thread(traceGetter);
+ t[i].start();
+ }
+ try {
+ Thread.sleep(1000);
+ } catch (InterruptedException e) {
+ System.out.println("Unexpectedly interrupted");
+ }
+ for (int i = 0; i < NUM_THREADS; ++i) {
+ getTrace(t[i]);
+ }
+ System.out.println("Finished worker stack traces");
+ long now = System.currentTimeMillis();
+ while (System.currentTimeMillis() - now < 2000) {
+ try {
+ Thread.sleep(1);
+ } catch (InterruptedException e) {
+ System.out.println("Unexpectedly interrupted");
+ }
+ }
+ pleaseStop = true;
+ System.out.println("Finished");
+ }
+}