diff --git a/include/utils/threads.h b/include/utils/threads.h
index 130d83c0d55f2..5ac0c5ee198d8 100644
--- a/include/utils/threads.h
+++ b/include/utils/threads.h
@@ -209,7 +209,7 @@ inline thread_id_t getThreadId() {
 class Mutex {
 public:
     enum {
-        NORMAL = 0,
+        PRIVATE = 0,
         SHARED = 1
     };
     
@@ -305,7 +305,13 @@ typedef Mutex::Autolock AutoMutex;
  */
 class Condition {
 public:
+    enum {
+        PRIVATE = 0,
+        SHARED = 1
+    };
+
     Condition();
+    Condition(int type);
     ~Condition();
     // Wait on the condition variable.  Lock the mutex before calling.
     status_t wait(Mutex& mutex);
@@ -329,6 +335,17 @@ private:
 inline Condition::Condition() {
     pthread_cond_init(&mCond, NULL);
 }
+inline Condition::Condition(int type) {
+    if (type == SHARED) {
+        pthread_condattr_t attr;
+        pthread_condattr_init(&attr);
+        pthread_condattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
+        pthread_cond_init(&mCond, &attr);
+        pthread_condattr_destroy(&attr);
+    } else {
+        pthread_cond_init(&mCond, NULL);
+    }
+}
 inline Condition::~Condition() {
     pthread_cond_destroy(&mCond);
 }
diff --git a/libs/surfaceflinger_client/SharedBufferStack.cpp b/libs/surfaceflinger_client/SharedBufferStack.cpp
index 65ce1c1cff7a7..a17e8acc577cf 100644
--- a/libs/surfaceflinger_client/SharedBufferStack.cpp
+++ b/libs/surfaceflinger_client/SharedBufferStack.cpp
@@ -34,7 +34,7 @@ namespace android {
 // ----------------------------------------------------------------------------
 
 SharedClient::SharedClient()
-    : lock(Mutex::SHARED)
+    : lock(Mutex::SHARED), cv(Condition::SHARED)
 {
 }
 
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 74852dcd7a796..cd7bcd5be3bb9 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -983,8 +983,10 @@ void AudioTrack::AudioTrackThread::onFirstRef()
 // =========================================================================
 
 audio_track_cblk_t::audio_track_cblk_t()
-    : lock(Mutex::SHARED), user(0), server(0), userBase(0), serverBase(0), buffers(0), frameCount(0),
-    loopStart(UINT_MAX), loopEnd(UINT_MAX), loopCount(0), volumeLR(0), flowControlFlag(1), forceReady(0)
+    : lock(Mutex::SHARED), cv(Condition::SHARED), user(0), server(0),
+    userBase(0), serverBase(0), buffers(0), frameCount(0),
+    loopStart(UINT_MAX), loopEnd(UINT_MAX), loopCount(0), volumeLR(0),
+    flowControlFlag(1), forceReady(0)
 {
 }