Modified Thread.c to allow sampling profiler thread in zygote. Added a function that
queries the native thread status. Modified the profiler to sample every thread at
a fixed interval instead of adjusting the delay based on the number of threads. This
will make it easier to compare results across apps. Added ability to shut down
the profiler thread. Added code to track whether the method was a leaf or a
caller.
diff --git a/vm/Thread.h b/vm/Thread.h
index 50bf5a0..3baf9aa 100644
--- a/vm/Thread.h
+++ b/vm/Thread.h
@@ -51,6 +51,7 @@
THREAD_STARTING = 6, /* started, not yet on thread list */
THREAD_NATIVE = 7, /* off in a JNI native method */
THREAD_VMWAIT = 8, /* waiting on a VM resource */
+ THREAD_PAGING = 9, /* paging memory */
} ThreadStatus;
/* thread priorities, from java.lang.Thread */
@@ -90,7 +91,7 @@
* Thread's current status. Can only be changed by the thread itself
* (i.e. don't mess with this from other threads).
*/
- ThreadStatus status;
+ volatile ThreadStatus status;
/*
* This is the number of times the thread has been suspended. When the
@@ -214,6 +215,11 @@
/* PC, saved on every instruction; redundant with StackSaveArea */
const u2* currentPc2;
#endif
+
+ /* /proc/PID/task/TID/stat */
+ int statFile;
+ /* offset of state char in stat file, last we checked */
+ int stateOffset;
} Thread;
/* start point for an internal thread; mimics pthread args */
@@ -434,6 +440,13 @@
void dvmDumpAllThreads(bool grabLock);
void dvmDumpAllThreadsEx(const DebugOutputTarget* target, bool grabLock);
+/*
+ * Reads the native thread status. If the thread is in native code, this
+ * function queries the native thread state and converts it to an equivalent
+ * ThreadStatus. If the native status can't be read, this function returns
+ * THREAD_NATIVE.
+ */
+ThreadStatus dvmGetNativeThreadStatus(Thread* thread);
#ifdef WITH_MONITOR_TRACKING
/*