Enable agent attaching during live phase
This is the ART part, the plumbing from VMDebug_attachAgent() to
actually loading the agent into the runtime.
Test: m test-art-host
Bug: 31682382
Change-Id: I3ccc67aa050c1f78278882128983686ed44ddec2
diff --git a/test/909-attach-agent/attach.cc b/test/909-attach-agent/attach.cc
new file mode 100644
index 0000000..2b50eb8
--- /dev/null
+++ b/test/909-attach-agent/attach.cc
@@ -0,0 +1,79 @@
+/*
+ * 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.
+ */
+
+#include "909-attach-agent/attach.h"
+
+#include <jni.h>
+#include <stdio.h>
+#include <string.h>
+#include "base/macros.h"
+#include "openjdkjvmti/jvmti.h"
+
+namespace art {
+namespace Test909AttachAgent {
+
+jint OnAttach(JavaVM* vm,
+ char* options ATTRIBUTE_UNUSED,
+ void* reserved ATTRIBUTE_UNUSED) {
+ printf("Attached Agent for test 909-attach-agent\n");
+ fsync(1);
+ jvmtiEnv* env = nullptr;
+ jvmtiEnv* env2 = nullptr;
+
+#define CHECK_CALL_SUCCESS(c) \
+ do { \
+ if ((c) != JNI_OK) { \
+ printf("call " #c " did not succeed\n"); \
+ return -1; \
+ } \
+ } while (false)
+
+ CHECK_CALL_SUCCESS(vm->GetEnv(reinterpret_cast<void**>(&env), JVMTI_VERSION_1_0));
+ CHECK_CALL_SUCCESS(vm->GetEnv(reinterpret_cast<void**>(&env2), JVMTI_VERSION_1_0));
+ if (env == env2) {
+ printf("GetEnv returned same environment twice!\n");
+ return -1;
+ }
+ unsigned char* local_data = nullptr;
+ CHECK_CALL_SUCCESS(env->Allocate(8, &local_data));
+ strcpy(reinterpret_cast<char*>(local_data), "hello!!");
+ CHECK_CALL_SUCCESS(env->SetEnvironmentLocalStorage(local_data));
+ unsigned char* get_data = nullptr;
+ CHECK_CALL_SUCCESS(env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&get_data)));
+ if (get_data != local_data) {
+ printf("Got different data from local storage then what was set!\n");
+ return -1;
+ }
+ CHECK_CALL_SUCCESS(env2->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&get_data)));
+ if (get_data != nullptr) {
+ printf("env2 did not have nullptr local storage.\n");
+ return -1;
+ }
+ CHECK_CALL_SUCCESS(env->Deallocate(local_data));
+ jint version = 0;
+ CHECK_CALL_SUCCESS(env->GetVersionNumber(&version));
+ if ((version & JVMTI_VERSION_1) != JVMTI_VERSION_1) {
+ printf("Unexpected version number!\n");
+ return -1;
+ }
+ CHECK_CALL_SUCCESS(env->DisposeEnvironment());
+ CHECK_CALL_SUCCESS(env2->DisposeEnvironment());
+#undef CHECK_CALL_SUCCESS
+ return JNI_OK;
+}
+
+} // namespace Test909AttachAgent
+} // namespace art