Add ProcessInfoService to activity manager.
- Adds a new AIDL interface for querying process
information from activity manager.
Bug: 19186859
Change-Id: Ic08858f346d6b66e7bfc9da6faa2c6e38d9b2e82
diff --git a/include/binder/ProcessInfoService.h b/include/binder/ProcessInfoService.h
new file mode 100644
index 0000000..c5ead20
--- /dev/null
+++ b/include/binder/ProcessInfoService.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2015 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 ANDROID_PROCESS_INFO_SERVICE_H
+#define ANDROID_PROCESS_INFO_SERVICE_H
+
+#include <binder/IProcessInfoService.h>
+#include <utils/Errors.h>
+#include <utils/Singleton.h>
+#include <sys/types.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------
+
+class ProcessInfoService : public Singleton<ProcessInfoService> {
+
+ friend class Singleton<ProcessInfoService>;
+ sp<IProcessInfoService> mProcessInfoService;
+ Mutex mProcessInfoLock;
+
+ ProcessInfoService();
+
+ status_t getProcessStatesImpl(size_t length, /*in*/ int32_t* pids, /*out*/ int32_t* states);
+ void updateBinderLocked();
+
+ static const int BINDER_ATTEMPT_LIMIT = 5;
+
+public:
+
+ /**
+ * For each PID in the given "pids" input array, write the current process state
+ * for that process into the "states" output array, or
+ * ActivityManager.PROCESS_STATE_NONEXISTENT * to indicate that no process with the given PID
+ * exists.
+ *
+ * Returns NO_ERROR if this operation was successful, or a negative error code otherwise.
+ */
+ static status_t getProcessStatesFromPids(size_t length, /*in*/ int32_t* pids,
+ /*out*/ int32_t* states) {
+ return ProcessInfoService::getInstance().getProcessStatesImpl(length, /*in*/ pids,
+ /*out*/ states);
+ }
+
+};
+
+// ----------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_PROCESS_INFO_SERVICE_H
+