Add callback hack to find out when to reload system properties.
Every IBinder object can accept a new transaction to tell it that
it might want to reload system properties, and in the process
anyone can register a callback to be executed when this happens.
Use this to reload the trace property.
This is very much ONLY for debugging.
Change-Id: I55c67c46f8f3fa9073bef0dfaab4577ed1d47eb4
diff --git a/include/utils/Trace.h b/include/utils/Trace.h
index 62f5d6b..984cd46 100644
--- a/include/utils/Trace.h
+++ b/include/utils/Trace.h
@@ -121,11 +121,16 @@
}
}
+ static void changeCallback();
+
// init opens the trace marker file for writing and reads the
// atrace.tags.enableflags system property. It does this only the first
// time it is run, using sMutex for synchronization.
static void init();
+ // retrieve the current value of the system property.
+ static void loadSystemProperty();
+
// sIsReady is a boolean value indicating whether a call to init() has
// completed in this process. It is initialized to 0 and set to 1 when the
// first init() call completes. It is set to 1 even if a failure occurred
diff --git a/include/utils/misc.h b/include/utils/misc.h
index 23f2a4c..d7d5bc1 100644
--- a/include/utils/misc.h
+++ b/include/utils/misc.h
@@ -88,6 +88,10 @@
void k_itoa(int value, char* str, int base);
char* itoa(int val, int base);
+typedef void (*sysprop_change_callback)(void);
+void add_sysprop_change_callback(sysprop_change_callback cb, int priority);
+void report_sysprop_change();
+
}; // namespace android
#endif // _LIBS_UTILS_MISC_H