+int tbm_bo_get_user_data(tbm_bo bo, unsigned long key, void **data);
+
+/**
+ * @brief Gets the latest tbm_error.
+ * @since_tizen 2.4
+ * @return the latest tbm_error
+ * @par Example
+ @code
+ #include <tbm_bufmgr.h>
+
+ int bufmgr_fd;
+ tbm_bufmgr bufmgr;
+ tbm_bo bo;
+ tbm_bo_handle handle;
+ tbm_error_e error;
+
+ bufmgr = tbm_bufmgr_init (bufmgr_fd);
+ bo = tbm_bo_alloc (bufmgr, 128 * 128, TBM_BO_DEFAULT);
+ if (!bo)
+ {
+ error = tbm_get_last_error ();
+ ...
+ }
+
+ ...
+
+ handle = tbm_bo_map (bo, TBM_DEVICE_2D, TBM_OPTION_READ|TBM_OPTION_WRITE);
+ if (handle.ptr == NULL)
+ {
+ error = tbm_get_last_error ();
+ ...
+ }
+
+ ...
+
+ tbm_bo_unmap (bo);
+ tbm_bo_unref (bo);
+ tbm_bufmgr_deinit (bufmgr);
+ @endcode
+ */
+tbm_error_e tbm_get_last_error(void);
+
+/**
+ * @brief Gets the tbm buffer capability.
+ * @since_tizen 2.4
+ * @param[in] bufmgr : the buffer manager
+ * @return the tbm bufmgr capability
+ * @par Example
+ @code
+ #include <tbm_bufmgr.h>
+
+ int bufmgr_fd;
+ tbm_bufmgr bufmgr;
+ unsigned int capability;
+
+ bufmgr = tbm_bufmgr_init (bufmgr_fd);
+
+ capability = tbm_bufmgr_get_capability (bufmgr);
+
+ tbm_bufmgr_deinit (bufmgr);
+ @endcode
+ */
+unsigned int tbm_bufmgr_get_capability(tbm_bufmgr bufmgr);
+
+/**
+ * @brief Gets the tbm bo flags.
+ * @since_tizen 2.4
+ * @param[in] bo : the buffer object
+ * @return the tbm bo flags
+ * @see TBM_BO_FLAGS
+ * @par Example
+ @code
+ #include <tbm_bufmgr.h>
+
+ int bufmgr_fd;
+ tbm_bufmgr bufmgr;
+ tbm_bo;
+ int flags;
+
+ bufmgr = tbm_bufmgr_init (bufmgr_fd);
+ bo = tbm_bo_alloc (bufmgr, 128 * 128, TBM_BO_DEFAULT);
+ flags = tbm_bo_get_flags (bo);
+
+ ...
+
+ tbm_bo_unref (bo);
+ tbm_bufmgr_deinit (bufmgr);
+
+ @endcode
+ */
+int tbm_bo_get_flags(tbm_bo bo);
+
+/**
+ * @brief Print out the information of tbm_bos.
+ * @since_tizen 3.0
+ * @param[in] bufmgr : the buffer manager
+ */
+void tbm_bufmgr_debug_show(tbm_bufmgr bufmgr);
+
+/**
+ * @brief Get string with the information of tbm_bos.
+ * @since_tizen 3.0
+ * @param[in] bufmgr : the buffer manager
+ * @return sting with info if this function succeeds, otherwise NULL. It has to be free by user.
+ */
+char * tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr);
+
+/**
+ * @brief Print out the trace of tbm_bos.
+ * @since_tizen 3.0
+ * @param[in] bufmgr : the buffer manager
+ * @param[in] onoff : 1 is on, and 0 is off
+ */
+void tbm_bufmgr_debug_trace(tbm_bufmgr bufmgr, int onoff);
+
+/**
+ * @brief Dump all tbm surfaces
+ * @param[in] path : the given dump path
+ * @return 1 if this function succeeds, otherwise 0.
+ */
+int tbm_bufmgr_debug_dump_all(char *path);
+
+/**
+ * @brief Start the dump debugging for queue.
+ * @since_tizen 3.0
+ * @param[in] path : the given dump path
+ * @param[in] count : the dump count number
+ * @param[in] onoff : 1 is on, and 0 is off, if onoff==0 path and count are ignored
+ * @return 1 if this function succeeds, otherwise 0.
+ */
+int tbm_bufmgr_debug_queue_dump(char *path, int count, int onoff);
+
+/**
+ * @brief Set scale factor for the nearest calling tbm_bufmgr_debug_dump_all() or tbm_bufmgr_debug_queue_dump()
+ * @since_tizen 3.0
+ * @param[in] scale : the scale factor, 0 - disable scaling
+ * @par Example
+ @code
+ #include <tbm_bufmgr.h>
+
+ // Dump all surface with scale factor 0.5
+ tbm_bufmgr_debug_dump_set_scale(0.5);
+ tbm_bufmgr_debug_dump_all("/tmp/");
+
+ // Start the dump debugging for queue with scale factor 0.5
+ tbm_bufmgr_debug_dump_set_scale(0.2);
+ tbm_bufmgr_debug_queue_dump("/tmp/", 10, 1);
+
+ @endcode
+ */
+void tbm_bufmgr_debug_dump_set_scale(double scale);
+
+int tbm_bufmgr_bind_native_display(tbm_bufmgr bufmgr, void *NativeDisplay);