Merge "Make the Choreographer thread-safe."
diff --git a/include/binder/IPCThreadState.h b/include/binder/IPCThreadState.h
index 3378d97..691ba2f 100644
--- a/include/binder/IPCThreadState.h
+++ b/include/binder/IPCThreadState.h
@@ -41,6 +41,7 @@
 
             int                 getCallingPid();
             int                 getCallingUid();
+            int                 getOrigCallingUid();
 
             void                setStrictModePolicy(int32_t policy);
             int32_t             getStrictModePolicy() const;
@@ -116,6 +117,7 @@
             status_t            mLastError;
             pid_t               mCallingPid;
             uid_t               mCallingUid;
+            uid_t               mOrigCallingUid;
             int32_t             mStrictModePolicy;
             int32_t             mLastTransactionBinderFlags;
 };
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 629b899..b578a6c 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -371,6 +371,11 @@
     return mCallingUid;
 }
 
+int IPCThreadState::getOrigCallingUid()
+{
+    return mOrigCallingUid;
+}
+
 int64_t IPCThreadState::clearCallingIdentity()
 {
     int64_t token = ((int64_t)mCallingUid<<32) | mCallingPid;
@@ -641,6 +646,7 @@
 {
     pthread_setspecific(gTLS, this);
     clearCaller();
+    mOrigCallingUid = mCallingUid;
     mIn.setDataCapacity(256);
     mOut.setDataCapacity(256);
 }
@@ -987,6 +993,7 @@
             
             mCallingPid = tr.sender_pid;
             mCallingUid = tr.sender_euid;
+            mOrigCallingUid = tr.sender_euid;
             
             int curPrio = getpriority(PRIO_PROCESS, mMyThreadId);
             if (gDisableBackgroundScheduling) {
@@ -1045,6 +1052,7 @@
             
             mCallingPid = origPid;
             mCallingUid = origUid;
+            mOrigCallingUid = origUid;
 
             IF_LOG_TRANSACTIONS() {
                 TextOutput::Bundle _b(alog);
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index 5cf5236..6b2ae51 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -345,42 +345,73 @@
 void egl_display_t::loseCurrent(egl_context_t * cur_c)
 {
     if (cur_c) {
-        egl_surface_t * cur_r = get_surface(cur_c->read);
-        egl_surface_t * cur_d = get_surface(cur_c->draw);
+        egl_display_t* display = cur_c->getDisplay();
+        if (display) {
+            display->loseCurrentImpl(cur_c);
+        }
+    }
+}
 
-        // by construction, these are either 0 or valid (possibly terminated)
-        // it should be impossible for these to be invalid
-        ContextRef _cur_c(cur_c);
-        SurfaceRef _cur_r(cur_r);
-        SurfaceRef _cur_d(cur_d);
+void egl_display_t::loseCurrentImpl(egl_context_t * cur_c)
+{
+    // by construction, these are either 0 or valid (possibly terminated)
+    // it should be impossible for these to be invalid
+    ContextRef _cur_c(cur_c);
+    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
+    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
 
+    { // scope for the lock
+        Mutex::Autolock _l(lock);
         cur_c->onLooseCurrent();
 
-        _cur_c.release();
-        _cur_r.release();
-        _cur_d.release();
     }
+
+    // This cannot be called with the lock held because it might end-up
+    // calling back into EGL (in particular when a surface is destroyed
+    // it calls ANativeWindow::disconnect
+    _cur_c.release();
+    _cur_r.release();
+    _cur_d.release();
 }
 
 EGLBoolean egl_display_t::makeCurrent(egl_context_t* c, egl_context_t* cur_c,
         EGLSurface draw, EGLSurface read, EGLContext ctx,
         EGLSurface impl_draw, EGLSurface impl_read, EGLContext impl_ctx)
 {
-    Mutex::Autolock _l(lock);
     EGLBoolean result;
-    if (c) {
-        result = c->cnx->egl.eglMakeCurrent(
-                disp[c->impl].dpy, impl_draw, impl_read, impl_ctx);
-    } else {
-        result = cur_c->cnx->egl.eglMakeCurrent(
-                disp[cur_c->impl].dpy, impl_draw, impl_read, impl_ctx);
-    }
-    if (result == EGL_TRUE) {
-        loseCurrent(cur_c);
+
+    // by construction, these are either 0 or valid (possibly terminated)
+    // it should be impossible for these to be invalid
+    ContextRef _cur_c(cur_c);
+    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
+    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
+
+    { // scope for the lock
+        Mutex::Autolock _l(lock);
         if (c) {
-            c->onMakeCurrent(draw, read);
+            result = c->cnx->egl.eglMakeCurrent(
+                    disp[c->impl].dpy, impl_draw, impl_read, impl_ctx);
+            if (result == EGL_TRUE) {
+                c->onMakeCurrent(draw, read);
+            }
+        } else {
+            result = cur_c->cnx->egl.eglMakeCurrent(
+                    disp[cur_c->impl].dpy, impl_draw, impl_read, impl_ctx);
+            if (result == EGL_TRUE) {
+                cur_c->onLooseCurrent();
+            }
         }
     }
+
+    if (result == EGL_TRUE) {
+        // This cannot be called with the lock held because it might end-up
+        // calling back into EGL (in particular when a surface is destroyed
+        // it calls ANativeWindow::disconnect
+        _cur_c.release();
+        _cur_r.release();
+        _cur_d.release();
+    }
+
     return result;
 }
 
diff --git a/opengl/libs/EGL/egl_display.h b/opengl/libs/EGL/egl_display.h
index 4479e00..f3c4ddf 100644
--- a/opengl/libs/EGL/egl_display.h
+++ b/opengl/libs/EGL/egl_display.h
@@ -64,6 +64,7 @@
 class EGLAPI egl_display_t { // marked as EGLAPI for testing purposes
     static egl_display_t sDisplay[NUM_DISPLAYS];
     EGLDisplay getDisplay(EGLNativeDisplayType display);
+    void loseCurrentImpl(egl_context_t * cur_c);
 
 public:
     enum {