am 24eca800: Merge change I887f355f into eclair-mr2

Merge commit '24eca800d4b34e7d13fbcbc1ab74c9d91ff6a4e1' into eclair-mr2-plus-aosp

* commit '24eca800d4b34e7d13fbcbc1ab74c9d91ff6a4e1':
  Propagate background scheduling class across processes.

3 files changed, 28 insertions, 2 deletions

diff --git a/include/binder/IBinder.h b/include/binder/IBinder.h
index 884b5c1..749a977 100644
--- a/include/binder/IBinder.h
+++ b/include/binder/IBinder.h
@@ -52,7 +52,7 @@ public:
         DUMP_TRANSACTION        = B_PACK_CHARS('_','D','M','P'),
         INTERFACE_TRANSACTION   = B_PACK_CHARS('_', 'N', 'T', 'F'),
 
-        // Corresponds to tfOneWay -- an asynchronous call.
+        // Corresponds to TF_ONE_WAY -- an asynchronous call.
         FLAG_ONEWAY             = 0x00000001
     };
 
diff --git a/include/binder/IPCThreadState.h b/include/binder/IPCThreadState.h
index 78306b2..3ab985d 100644
--- a/include/binder/IPCThreadState.h
+++ b/include/binder/IPCThreadState.h
@@ -68,6 +68,13 @@ public:
 
     static  void                shutdown();
     
+    // Call this to disable switching threads to background scheduling when
+    // receiving incoming IPC calls.  This is specifically here for the
+    // Android system process, since it expects to have background apps calling
+    // in to it but doesn't want to acquire locks in its services while in
+    // the background.
+    static  void                disableBackgroundScheduling(bool disable);
+    
 private:
                                 IPCThreadState();
                                 ~IPCThreadState();
@@ -93,9 +100,10 @@ private:
                                            void* cookie);
     
     const   sp<ProcessState>    mProcess;
+    const   pid_t               mMyThreadId;
             Vector<BBinder*>    mPendingStrongDerefs;
             Vector<RefBase::weakref_type*> mPendingWeakDerefs;
-                                
+            
             Parcel              mIn;
             Parcel              mOut;
             status_t            mLastError;
diff --git a/include/utils/threads.h b/include/utils/threads.h
index 0fc533f..130d83c 100644
--- a/include/utils/threads.h
+++ b/include/utils/threads.h
@@ -124,6 +124,24 @@ typedef int (*android_create_thread_fn)(android_thread_func_t entryFunction,
 
 extern void androidSetCreateThreadFunc(android_create_thread_fn func);
 
+// ------------------------------------------------------------------
+// Extra functions working with raw pids.
+
+// Get pid for the current thread.
+extern pid_t androidGetTid();
+
+// Change the scheduling group of a particular thread.  The group
+// should be one of the ANDROID_TGROUP constants.  Returns BAD_VALUE if
+// grp is out of range, else another non-zero value with errno set if
+// the operation failed.
+extern int androidSetThreadSchedulingGroup(pid_t tid, int grp);
+
+// Change the priority AND scheduling group of a particular thread.  The priority
+// should be one of the ANDROID_PRIORITY constants.  Returns INVALID_OPERATION
+// if the priority set failed, else another value if just the group set failed;
+// in either case errno is set.
+extern int androidSetThreadPriority(pid_t tid, int prio);
+
 #ifdef __cplusplus
 }
 #endif