1 files changed, 99 insertions, 0 deletions
diff --git a/test/ti-agent/stack_trace_helper.cc b/test/ti-agent/stack_trace_helper.cc
new file mode 100644
index 0000000000..f2a8e9a318
--- /dev/null
+++ b/test/ti-agent/stack_trace_helper.cc
@@ -0,0 +1,99 @@
+
+/*
+ * Copyright (C) 2017 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 "common_helper.h"
+
+#include "jni.h"
+#include "jvmti.h"
+
+#include "jvmti_helper.h"
+#include "scoped_local_ref.h"
+#include "test_env.h"
+
+namespace art {
+namespace common_stack_trace {
+
+extern "C" JNIEXPORT jint JNICALL Java_art_StackTrace_GetStackDepth(
+    JNIEnv* env, jclass, jthread thr) {
+  jint ret;
+  JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameCount(thr, &ret));
+  return ret;
+}
+
+extern "C" JNIEXPORT jobjectArray Java_art_StackTrace_nativeGetStackTrace(JNIEnv* env,
+                                                                          jclass,
+                                                                          jthread thr) {
+  jint depth;
+  ScopedLocalRef<jclass> klass(env, env->FindClass("art/StackTrace$StackFrameData"));
+  if (env->ExceptionCheck()) {
+    return nullptr;
+  }
+  jmethodID constructor = env->GetMethodID(
+      klass.get(), "<init>", "(Ljava/lang/Thread;Ljava/lang/reflect/Executable;JI)V");
+  if (env->ExceptionCheck()) {
+    return nullptr;
+  }
+  if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetFrameCount(thr, &depth))) {
+    return nullptr;
+  }
+  // Just give some extra space.
+  depth += 10;
+  jvmtiFrameInfo* frames;
+  if (JvmtiErrorToException(
+      env, jvmti_env, jvmti_env->Allocate(depth * sizeof(jvmtiFrameInfo),
+                                          reinterpret_cast<unsigned char**>(&frames)))) {
+    return nullptr;
+  }
+  jint nframes = 0;
+  if (JvmtiErrorToException(
+      env, jvmti_env, jvmti_env->GetStackTrace(thr, 0, depth, frames, &nframes))) {
+    jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+    return nullptr;
+  }
+  jobjectArray frames_array = env->NewObjectArray(nframes, klass.get(), nullptr);
+  if (env->ExceptionCheck()) {
+    jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+    return nullptr;
+  }
+  for (jint i = 0; i < nframes; i++) {
+    jobject jmethod = GetJavaMethod(jvmti_env, env, frames[i].method);
+    if (env->ExceptionCheck()) {
+      jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+      return nullptr;
+    }
+    jobject frame_obj = env->NewObject(klass.get(),
+                                       constructor,
+                                       thr,
+                                       jmethod,
+                                       frames[i].location,
+                                       i);
+    if (env->ExceptionCheck()) {
+      jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+      return nullptr;
+    }
+    env->SetObjectArrayElement(frames_array, i, frame_obj);
+    if (env->ExceptionCheck()) {
+      jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+      return nullptr;
+    }
+  }
+  jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(frames));
+  return frames_array;
+}
+
+}  // namespace common_stack_trace
+}  // namespace art