Support wrapping app processes to inject debug instrumentation.
Bug: 4437846
Change-Id: I4552501c693716b14714afb5c5248edaca9547ab
diff --git a/core/java/android/os/Process.java b/core/java/android/os/Process.java
index f85df6c..d475f36 100644
--- a/core/java/android/os/Process.java
+++ b/core/java/android/os/Process.java
@@ -634,6 +634,20 @@
}
/**
+ * Returns the parent process id for a currently running process.
+ * @param pid the process id
+ * @return the parent process id of the process, or -1 if the process is not running.
+ * @hide
+ */
+ public static final int getParentPid(int pid) {
+ String[] procStatusLabels = { "PPid:" };
+ long[] procStatusValues = new long[1];
+ procStatusValues[0] = -1;
+ Process.readProcLines("/proc/" + pid + "/status", procStatusLabels, procStatusValues);
+ return (int) procStatusValues[0];
+ }
+
+ /**
* Set the priority of a thread, based on Linux priorities.
*
* @param tid The identifier of the thread/process to change.