Merge changes Ibb3b6ff0,I2341e20c into jb-mr2-dev

* changes:
  rename binder services main thread to Binder_*
  limit number of extra binder threads in SF to 4

cmds/surfaceflinger/main_surfaceflinger.cpp

@@ -20,9 +20,9 @@
 using namespace android;
 
 int main(int argc, char** argv) {
-    SurfaceFlinger::publishAndJoinThreadPool(true);
     // When SF is launched in its own process, limit the number of
     // binder threads to 4.
     ProcessState::self()->setThreadPoolMaxThreadCount(4);
+    SurfaceFlinger::publishAndJoinThreadPool(true);
     return 0;
 }

include/binder/BinderService.h

@@ -36,13 +36,18 @@ class BinderService
 public:
     static status_t publish(bool allowIsolated = false) {
         sp<IServiceManager> sm(defaultServiceManager());
-        return sm->addService(String16(SERVICE::getServiceName()), new SERVICE(), allowIsolated);
+        return sm->addService(
+                String16(SERVICE::getServiceName()),
+                new SERVICE(), allowIsolated);
     }
 
     static void publishAndJoinThreadPool(bool allowIsolated = false) {
         sp<IServiceManager> sm(defaultServiceManager());
-        sm->addService(String16(SERVICE::getServiceName()), new SERVICE(), allowIsolated);
+        sm->addService(
+                String16(SERVICE::getServiceName()),
+                new SERVICE(), allowIsolated);
         ProcessState::self()->startThreadPool();
+        ProcessState::self()->giveThreadPoolName();
         IPCThreadState::self()->joinThreadPool();
     }
 

include/binder/ProcessState.h

@@ -71,6 +71,7 @@ public:
             void                spawnPooledThread(bool isMain);
             
             status_t            setThreadPoolMaxThreadCount(size_t maxThreads);
+            void                giveThreadPoolName();
 
 private:
     friend class IPCThreadState;
@@ -80,6 +81,7 @@ private:
 
                                 ProcessState(const ProcessState& o);
             ProcessState&       operator=(const ProcessState& o);
+            String8             makeBinderThreadName();
             
             struct handle_entry {
                 IBinder* binder;

include/utils/AndroidThreads.h

@@ -56,6 +56,9 @@ extern int androidCreateRawThreadEtc(android_thread_func_t entryFunction,
                                      size_t threadStackSize,
                                      android_thread_id_t *threadId);
 
+// set the same of the running thread
+extern void androidSetThreadName(const char* name);
+
 // Used by the Java Runtime to control how threads are created, so that
 // they can be proper and lovely Java threads.
 typedef int (*android_create_thread_fn)(android_thread_func_t entryFunction,

libs/binder/ProcessState.cpp

@@ -283,15 +283,20 @@ void ProcessState::setArgV0(const char* txt)
     }
 }
 
+String8 ProcessState::makeBinderThreadName() {
+    int32_t s = android_atomic_add(1, &mThreadPoolSeq);
+    String8 name;
+    name.appendFormat("Binder_%X", s);
+    return name;
+}
+
 void ProcessState::spawnPooledThread(bool isMain)
 {
     if (mThreadPoolStarted) {
-        int32_t s = android_atomic_add(1, &mThreadPoolSeq);
-        char buf[16];
-        snprintf(buf, sizeof(buf), "Binder_%X", s);
-        ALOGV("Spawning new pooled thread, name=%s\n", buf);
+        String8 name = makeBinderThreadName();
+        ALOGV("Spawning new pooled thread, name=%s\n", name.string());
         sp<Thread> t = new PoolThread(isMain);
-        t->run(buf);
+        t->run(name.string());
     }
 }
 
@@ -304,6 +309,10 @@ status_t ProcessState::setThreadPoolMaxThreadCount(size_t maxThreads) {
     return result;
 }
 
+void ProcessState::giveThreadPoolName() {
+    androidSetThreadName( makeBinderThreadName().string() );
+}
+
 static int open_driver()
 {
     int fd = open("/dev/binder", O_RDWR);

libs/utils/Threads.cpp

@@ -109,30 +109,34 @@ struct thread_data_t {
         }
         
         if (name) {
-#if defined(HAVE_PRCTL)
-            // Mac OS doesn't have this, and we build libutil for the host too
-            int hasAt = 0;
-            int hasDot = 0;
-            char *s = name;
-            while (*s) {
-                if (*s == '.') hasDot = 1;
-                else if (*s == '@') hasAt = 1;
-                s++;
-            }
-            int len = s - name;
-            if (len < 15 || hasAt || !hasDot) {
-                s = name;
-            } else {
-                s = name + len - 15;
-            }
-            prctl(PR_SET_NAME, (unsigned long) s, 0, 0, 0);
-#endif
+            androidSetThreadName(name);
             free(name);
         }
         return f(u);
     }
 };
 
+void androidSetThreadName(const char* name) {
+#if defined(HAVE_PRCTL)
+    // Mac OS doesn't have this, and we build libutil for the host too
+    int hasAt = 0;
+    int hasDot = 0;
+    const char *s = name;
+    while (*s) {
+        if (*s == '.') hasDot = 1;
+        else if (*s == '@') hasAt = 1;
+        s++;
+    }
+    int len = s - name;
+    if (len < 15 || hasAt || !hasDot) {
+        s = name;
+    } else {
+        s = name + len - 15;
+    }
+    prctl(PR_SET_NAME, (unsigned long) s, 0, 0, 0);
+#endif
+}
+
 int androidCreateRawThreadEtc(android_thread_func_t entryFunction,
                                void *userData,
                                const char* threadName,