Replace instrumention id with stack pointers.
Replace instrumentation ids for instrumentation frames, which are
inherently broken (see b/72608560), and use stack addresses instead
to properly identify which frames to pop / unwind.
Bug: 72608560
Bug: 148166031
Test: ./art/test/testrunner/testrunner.py --trace --debuggable --ndebuggable --optimizing --interpreter --jit --debug --ndebug -j32
Test: run-libjdwp-tests.sh
Test: 2011-stack-walk-concurrent-instrument
Test: ./art/test/run-test --host --dev --runtime-option -verbose:deopt,plugin --prebuild --compact-dex-level fast --jit --no-relocate --create-runner --runtime-option -Xcheck:jni 1965-get-set-local-primitive-no-tables
art/tools/parallel_run.py -j80 /tmp/path/to/runit.sh --out failure.txt
Change-Id: I71f6e55b9da608796cd3142b147f7b50bbd292ec
diff --git a/test/2011-stack-walk-concurrent-instrument/expected.txt b/test/2011-stack-walk-concurrent-instrument/expected.txt
new file mode 100644
index 0000000..77a1486
--- /dev/null
+++ b/test/2011-stack-walk-concurrent-instrument/expected.txt
@@ -0,0 +1,2 @@
+JNI_OnLoad called
+Done
diff --git a/test/2011-stack-walk-concurrent-instrument/info.txt b/test/2011-stack-walk-concurrent-instrument/info.txt
new file mode 100644
index 0000000..91f0106
--- /dev/null
+++ b/test/2011-stack-walk-concurrent-instrument/info.txt
@@ -0,0 +1,3 @@
+Tests concurrently instrumenting a thread while walking a stack doesn't crash/break.
+
+Bug: 72608560
diff --git a/test/2011-stack-walk-concurrent-instrument/src/Main.java b/test/2011-stack-walk-concurrent-instrument/src/Main.java
new file mode 100644
index 0000000..8f96f93
--- /dev/null
+++ b/test/2011-stack-walk-concurrent-instrument/src/Main.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2020 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.concurrent.*;
+
+public class Main {
+ public Main() {
+ }
+
+ void $noinline$f(Runnable r) throws Exception {
+ $noinline$g(r);
+ }
+
+ void $noinline$g(Runnable r) {
+ $noinline$h(r);
+ }
+
+ void $noinline$h(Runnable r) {
+ r.run();
+ }
+
+ public native void resetTest();
+ public native void waitAndDeopt(Thread t);
+ public native void doSelfStackWalk();
+
+ void testConcurrent() throws Exception {
+ resetTest();
+ final Thread current = Thread.currentThread();
+ Thread t = new Thread(() -> {
+ try {
+ this.waitAndDeopt(current);
+ } catch (Exception e) {
+ throw new Error("Fail!", e);
+ }
+ });
+ t.start();
+ $noinline$f(() -> {
+ try {
+ this.doSelfStackWalk();
+ } catch (Exception e) {
+ throw new Error("Fail!", e);
+ }
+ });
+ t.join();
+ }
+
+ public static void main(String[] args) throws Exception {
+ System.loadLibrary(args[0]);
+ Main st = new Main();
+ st.testConcurrent();
+ System.out.println("Done");
+ }
+}
diff --git a/test/2011-stack-walk-concurrent-instrument/stack_walk_concurrent.cc b/test/2011-stack-walk-concurrent-instrument/stack_walk_concurrent.cc
new file mode 100644
index 0000000..a185446
--- /dev/null
+++ b/test/2011-stack-walk-concurrent-instrument/stack_walk_concurrent.cc
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2020 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 <atomic>
+#include <string_view>
+
+#include "arch/context.h"
+#include "art_method-inl.h"
+#include "jni.h"
+#include "scoped_thread_state_change.h"
+#include "stack.h"
+#include "thread.h"
+
+namespace art {
+namespace StackWalkConcurrentInstrument {
+
+std::atomic<bool> instrument_waiting = false;
+std::atomic<bool> instrumented = false;
+
+// Spin lock.
+static void WaitForInstrument() REQUIRES_SHARED(Locks::mutator_lock_) {
+ ScopedThreadSuspension sts(Thread::Current(), ThreadState::kWaitingForDeoptimization);
+ instrument_waiting = true;
+ while (!instrumented) {
+ }
+}
+
+class SelfStackWalkVisitor : public StackVisitor {
+ public:
+ explicit SelfStackWalkVisitor(Thread* thread) REQUIRES_SHARED(Locks::mutator_lock_)
+ : StackVisitor(thread, Context::Create(), StackWalkKind::kIncludeInlinedFrames) {}
+
+ bool VisitFrame() override REQUIRES_SHARED(Locks::mutator_lock_) {
+ if (GetMethod()->GetNameView() == "$noinline$f") {
+ CHECK(!found_f_);
+ found_f_ = true;
+ } else if (GetMethod()->GetNameView() == "$noinline$g") {
+ CHECK(!found_g_);
+ found_g_ = true;
+ WaitForInstrument();
+ } else if (GetMethod()->GetNameView() == "$noinline$h") {
+ CHECK(!found_h_);
+ found_h_ = true;
+ }
+ return true;
+ }
+
+ bool found_f_ = false;
+ bool found_g_ = false;
+ bool found_h_ = false;
+};
+
+extern "C" JNIEXPORT void JNICALL Java_Main_resetTest(JNIEnv*, jobject) {
+ instrument_waiting = false;
+ instrumented = false;
+}
+
+extern "C" JNIEXPORT void JNICALL Java_Main_doSelfStackWalk(JNIEnv*, jobject) {
+ ScopedObjectAccess soa(Thread::Current());
+ SelfStackWalkVisitor sswv(Thread::Current());
+ sswv.WalkStack();
+ CHECK(sswv.found_f_);
+ CHECK(sswv.found_g_);
+ CHECK(sswv.found_h_);
+}
+extern "C" JNIEXPORT void JNICALL Java_Main_waitAndDeopt(JNIEnv*, jobject, jobject target) {
+ while (!instrument_waiting) {
+ }
+ bool timed_out = false;
+ Thread* other = Runtime::Current()->GetThreadList()->SuspendThreadByPeer(
+ target, true, SuspendReason::kInternal, &timed_out);
+ CHECK(!timed_out);
+ CHECK(other != nullptr);
+ ScopedSuspendAll ssa(__FUNCTION__);
+ Runtime::Current()->GetInstrumentation()->InstrumentThreadStack(other);
+ MutexLock mu(Thread::Current(), *Locks::thread_suspend_count_lock_);
+ bool updated = other->ModifySuspendCount(Thread::Current(), -1, nullptr, SuspendReason::kInternal);
+ CHECK(updated);
+ instrumented = true;
+ return;
+}
+
+} // namespace StackWalkConcurrentInstrument
+} // namespace art