remove getenv() function.
[platform/core/uifw/libtbm.git] / src / tbm_bufmgr.c
index c7b4800..d80f7ec 100644 (file)
@@ -38,13 +38,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <sys/resource.h>
 
-#ifdef DEBUG
-int bDebug;
-#endif
-
-#ifdef TRACE
-int bTrace;
-#endif
+int trace_mask = 0;
 
 #ifdef HAVE_DLOG
 int bDlog;
@@ -55,9 +49,8 @@ int b_dump_queue;
 
 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 static pthread_mutex_t tbm_bufmgr_lock = PTHREAD_MUTEX_INITIALIZER;
-static __thread tbm_error_e tbm_last_error = TBM_ERROR_NONE;
 static double scale_factor = 0;
-static void _tbm_bufmgr_mutex_unlock(void);
+void _tbm_bufmgr_mutex_unlock(void);
 
 //#define TBM_BUFMGR_INIT_TIME
 
@@ -66,9 +59,9 @@ static void _tbm_bufmgr_mutex_unlock(void);
 #define DEFAULT_LIB   PREFIX_LIB"default"SUFFIX_LIB
 
 /* values to indicate unspecified fields in XF86ModReqInfo. */
-#define MAJOR_UNSPEC        0xFF
-#define MINOR_UNSPEC        0xFF
-#define PATCH_UNSPEC        0xFFFF
+#define MAJOR_UNSPEC      0xFF
+#define MINOR_UNSPEC      0xFF
+#define PATCH_UNSPEC      0xFFFF
 #define ABI_VERS_UNSPEC   0xFFFFFFFF
 
 #define MODULE_VERSION_NUMERIC(maj, min, patch) \
@@ -77,10 +70,13 @@ static void _tbm_bufmgr_mutex_unlock(void);
 #define GET_MODULE_MINOR_VERSION(vers)    (((vers) >> 16) & 0xFF)
 #define GET_MODULE_PATCHLEVEL(vers)    ((vers) & 0xFFFF)
 
+#define MAX_SIZE_N(dest)       (sizeof(dest) - strlen(dest) - 1)
+
 /* check condition */
 #define TBM_BUFMGR_RETURN_IF_FAIL(cond) {\
        if (!(cond)) {\
-               TBM_LOG_E("'%s' failed.\n", #cond);\
+               TBM_ERR("'%s' failed.\n", #cond);\
+               _tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);\
                _tbm_bufmgr_mutex_unlock();\
                return;\
        } \
@@ -88,105 +84,27 @@ static void _tbm_bufmgr_mutex_unlock(void);
 
 #define TBM_BUFMGR_RETURN_VAL_IF_FAIL(cond, val) {\
        if (!(cond)) {\
-               TBM_LOG_E("'%s' failed.\n", #cond);\
+               TBM_ERR("'%s' failed.\n", #cond);\
+               _tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);\
                _tbm_bufmgr_mutex_unlock();\
                return val;\
        } \
 }
 
-enum {
-       LOCK_TRY_ONCE,
-       LOCK_TRY_ALWAYS,
-       LOCK_TRY_NEVER
-};
-
-static void
-_tbm_set_last_result(tbm_error_e err)
-{
-       tbm_last_error = err;
-}
-
 /* LCOV_EXCL_START */
-static bool
-_tbm_bufmgr_mutex_init(void)
-{
-       static bool tbm_bufmgr_mutex_init = false;
-
-       if (tbm_bufmgr_mutex_init)
-               return true;
-
-       if (pthread_mutex_init(&tbm_bufmgr_lock, NULL)) {
-               TBM_LOG_E("fail: Cannot pthread_mutex_init for tbm_bufmgr_lock.\n");
-               return false;
-       }
-
-       tbm_bufmgr_mutex_init = true;
-
-       return true;
-}
 
-static void
+void
 _tbm_bufmgr_mutex_lock(void)
 {
-       if (!_tbm_bufmgr_mutex_init()) {
-               TBM_LOG_E("fail: _tbm_bufmgr_mutex_init()\n");
-               return;
-       }
-
        pthread_mutex_lock(&tbm_bufmgr_lock);
 }
 
-static void
+void
 _tbm_bufmgr_mutex_unlock(void)
 {
        pthread_mutex_unlock(&tbm_bufmgr_lock);
 }
 
-static char *
-_tbm_flag_to_str(int f)
-{
-       static char str[255];
-
-       if (f == TBM_BO_DEFAULT)
-                snprintf(str, 255, "DEFAULT");
-       else {
-               int c = 0;
-
-               if (f & TBM_BO_SCANOUT)
-                       c = snprintf(&str[c], 255, "SCANOUT");
-
-               if (f & TBM_BO_NONCACHABLE) {
-                       if (c)
-                               c = snprintf(&str[c], 255, ", ");
-                       c = snprintf(&str[c], 255, "NONCACHABLE,");
-               }
-
-               if (f & TBM_BO_WC) {
-                       if (c)
-                               c = snprintf(&str[c], 255, ", ");
-                       c = snprintf(&str[c], 255, "WC");
-               }
-       }
-
-       return str;
-}
-
-static void
-_tbm_util_check_bo_cnt(tbm_bufmgr bufmgr)
-{
-       static int last_chk_bo_cnt = 0;
-
-       if ((bufmgr->bo_cnt >= 500) && ((bufmgr->bo_cnt % 20) == 0) &&
-               (bufmgr->bo_cnt > last_chk_bo_cnt)) {
-               TBM_DEBUG("============TBM BO CNT DEBUG: bo_cnt=%d\n",
-                               bufmgr->bo_cnt);
-
-               tbm_bufmgr_debug_show(bufmgr);
-
-               last_chk_bo_cnt = bufmgr->bo_cnt;
-       }
-}
-
 static int
 _tbm_util_get_max_surface_size(int *w, int *h)
 {
@@ -239,16 +157,18 @@ _tbm_util_get_appname_from_pid(long pid, char *str)
        FILE *fp;
        int len;
 
+       if (pid <= 0) return;
+
        snprintf(fn_cmdline, sizeof(fn_cmdline), "/proc/%ld/cmdline", pid);
 
        fp = fopen(fn_cmdline, "r");
        if (fp == 0) {
-               TBM_LOG_E("cannot file open %s\n", fn_cmdline);
+               TBM_ERR("cannot file open %s\n", fn_cmdline);
                return;
        }
 
        if (!fgets(cmdline, 255, fp)) {
-               TBM_LOG_E("fail to get appname for pid(%ld)\n", pid);
+               TBM_ERR("fail to get appname for pid(%ld)\n", pid);
                fclose(fp);
                return;
        }
@@ -263,259 +183,182 @@ _tbm_util_get_appname_from_pid(long pid, char *str)
 
        snprintf(str, sizeof(cmdline), "%s", cmdline);
 }
-/* LCOV_EXCL_STOP */
 
-tbm_user_data
-*user_data_lookup(struct list_head *user_data_list, unsigned long key)
+static int
+_check_version(TBMModuleVersionInfo *data)
 {
-       tbm_user_data *old_data = NULL;
+       int backend_module_major, backend_module_minor;
+       int tbm_backend_major, tbm_backend_minor;
 
-       if (LIST_IS_EMPTY(user_data_list))
-               return NULL;
+       backend_module_major = GET_ABI_MAJOR(data->abiversion);
+       backend_module_minor = GET_ABI_MINOR(data->abiversion);
 
-       LIST_FOR_EACH_ENTRY(old_data, user_data_list, item_link) {
-               if (old_data->key == key)
-                       return old_data;
-       }
+       TBM_DBG("TBM module %s: vendor=\"%s\" ABI=%d,%d\n",
+           data->modname ? data->modname : "UNKNOWN!",
+           data->vendor ? data->vendor : "UNKNOWN!", backend_module_major, backend_module_minor);
 
-       return NULL;
-}
+       tbm_backend_major = GET_ABI_MAJOR(TBM_ABI_VERSION);
+       tbm_backend_minor = GET_ABI_MINOR(TBM_ABI_VERSION);
 
-tbm_user_data
-*user_data_create(unsigned long key, tbm_data_free data_free_func)
-{
-       tbm_user_data *user_data;
+       TBM_DBG("TBM ABI version %d.%d\n",
+           tbm_backend_major, tbm_backend_minor);
 
-       user_data = calloc(1, sizeof(tbm_user_data));
-       if (!user_data) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("fail to allocate an user_date\n");
-               return NULL;
-               /* LCOV_EXCL_STOP */
+       if (backend_module_major != tbm_backend_major) {
+               TBM_ERR("TBM module ABI major ver(%d) doesn't match the TBM's ver(%d)\n",
+                       backend_module_major, tbm_backend_major);
+               return 0;
+       } else if (backend_module_minor > tbm_backend_minor) {
+               TBM_ERR("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
+                       backend_module_minor, tbm_backend_minor);
+               return 0;
        }
 
-       user_data->key = key;
-       user_data->free_func = data_free_func;
-
-       return user_data;
-}
-
-void
-user_data_delete(tbm_user_data *user_data)
-{
-       if (user_data->data && user_data->free_func)
-               user_data->free_func(user_data->data);
-
-       LIST_DEL(&user_data->item_link);
-
-       free(user_data);
+       return 1;
 }
 
 static int
-_bo_lock(tbm_bo bo, int device, int opt)
+_tbm_backend_check_bufmgr_func(tbm_backend_bufmgr_func *bufmgr_func)
 {
-       tbm_bufmgr bufmgr = bo->bufmgr;
-       int ret = 1;
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_capabilities, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_bind_native_display, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_supported_formats, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_get_plane_data, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_alloc_bo, 0); /* mandatory symbol */
+       if (!bufmgr_func->bufmgr_alloc_bo_with_format)
+               TBM_DBG("No bufmgr_func->bufmgr_alloc_bo_with_format.");
+       TBM_RETURN_VAL_IF_FAIL(bufmgr_func->bufmgr_import_fd, 0); /* mandatory symbol */
+       if (!bufmgr_func->bufmgr_import_key)
+               TBM_DBG("No bufmgr_func->bo_export_key.");
 
-       if (bufmgr->backend->bo_lock)
-               ret = bufmgr->backend->bo_lock(bo, device, opt);
-
-       return ret;
+       return 1;
 }
 
-static void
-_bo_unlock(tbm_bo bo)
+static int
+_tbm_backend_check_bufmgr_bo(tbm_backend_bo_func *bo_func)
 {
-       tbm_bufmgr bufmgr = bo->bufmgr;
+       TBM_RETURN_VAL_IF_FAIL(bo_func, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_free, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_size, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_memory_types, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_get_handle, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_map, 0); /* mandatory symbol */
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_unmap, 0); /* mandatory symbol */
+       if (!bo_func->bo_lock)
+               TBM_DBG("No bo_func->bo_lock.");
+       if (!bo_func->bo_unlock)
+               TBM_DBG("No bo_func->bo_unlock.");
+       TBM_RETURN_VAL_IF_FAIL(bo_func->bo_export_fd, 0); /* mandatory symbol */
+       if (!bo_func->bo_export_key)
+               TBM_INFO("No bo_func->bo_export_key.");
 
-       if (bufmgr->backend->bo_unlock)
-               bufmgr->backend->bo_unlock(bo);
+       return 1;
 }
 
 static int
-_tbm_bo_lock(tbm_bo bo, int device, int opt)
+_tbm_backend_load_module(tbm_bufmgr bufmgr, const char *file)
 {
-       tbm_bufmgr bufmgr;
-       int old, ret;
-
-       if (!bo)
-               return 0;
-
-       bufmgr = bo->bufmgr;
+       char path[PATH_MAX] = {0, };
+       void *module_data = NULL;
+       tbm_backend_module *backend_module_data = NULL;
+       tbm_backend_bufmgr_data *bufmgr_data = NULL;
+       int backend_module_major, backend_module_minor;
+       int tbm_backend_major, tbm_backend_minor;
+       tbm_error_e error;
 
-       /* do not try to lock the bo */
-       if (bufmgr->lock_type == LOCK_TRY_NEVER)
-               return 1;
+       snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
 
-       if (bo->lock_cnt < 0) {
-               TBM_LOG_E("error bo:%p LOCK_CNT=%d\n",
-                       bo, bo->lock_cnt);
+       module_data = dlopen(path, RTLD_LAZY);
+       if (!module_data) {
+               TBM_ERR("failed to load module: %s(%s)\n", dlerror(), file);
                return 0;
        }
 
-       old = bo->lock_cnt;
-
-       switch (bufmgr->lock_type) {
-       case LOCK_TRY_ONCE:
-               if (bo->lock_cnt == 0) {
-                       _tbm_bufmgr_mutex_unlock();
-                       ret = _bo_lock(bo, device, opt);
-                       _tbm_bufmgr_mutex_lock();
-                       if (ret)
-                               bo->lock_cnt++;
-               } else
-                       ret = 1;
-               break;
-       case LOCK_TRY_ALWAYS:
-               _tbm_bufmgr_mutex_unlock();
-               ret = _bo_lock(bo, device, opt);
-               _tbm_bufmgr_mutex_lock();
-               if (ret)
-                       bo->lock_cnt++;
-               break;
-       default:
-               TBM_LOG_E("error bo:%p lock_type[%d] is wrong.\n",
-                               bo, bufmgr->lock_type);
-               ret = 0;
-               break;
+       backend_module_data = dlsym(module_data, "tbm_backend_module_data");
+       if (!backend_module_data) {
+               TBM_ERR("Error: module does not have data object.\n");
+               goto err;
        }
 
-       TBM_DBG_LOCK(">> LOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
-
-       return ret;
-}
-
-static void
-_tbm_bo_unlock(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr;
-       int old;
-
-       if (!bo)
-               return;
-
-       bufmgr = bo->bufmgr;
+       tbm_backend_major = GET_ABI_MAJOR(TBM_BACKEND_ABI_LATEST_VERSION);
+       tbm_backend_minor = GET_ABI_MINOR(TBM_BACKEND_ABI_LATEST_VERSION);
+       TBM_INFO("TBM Backend ABI version %d.%d\n", tbm_backend_major, tbm_backend_minor);
 
-       /* do not try to unlock the bo */
-       if (bufmgr->lock_type == LOCK_TRY_NEVER)
-               return;
+       backend_module_major = GET_ABI_MAJOR(backend_module_data->abi_version);
+       backend_module_minor = GET_ABI_MINOR(backend_module_data->abi_version);
 
-       old = bo->lock_cnt;
+       TBM_INFO("TBM module %s: vendor=\"%s\" Backend ABI version=%d.%d\n",
+           backend_module_data->name ? backend_module_data->name : "UNKNOWN!",
+           backend_module_data->vendor ? backend_module_data->vendor : "UNKNOWN!",
+               backend_module_major, backend_module_minor);
 
-       switch (bufmgr->lock_type) {
-       case LOCK_TRY_ONCE:
-               if (bo->lock_cnt > 0) {
-                       bo->lock_cnt--;
-                       if (bo->lock_cnt == 0)
-                               _bo_unlock(bo);
-               }
-               break;
-       case LOCK_TRY_ALWAYS:
-               if (bo->lock_cnt > 0) {
-                       bo->lock_cnt--;
-                       _bo_unlock(bo);
-               }
-               break;
-       default:
-               TBM_LOG_E("error bo:%p lock_type[%d] is wrong.\n",
-                               bo, bufmgr->lock_type);
-               break;
+       if (backend_module_major > tbm_backend_major) {
+               TBM_ERR("TBM module ABI major ver(%d) is newer than the TBM's ver(%d)\n",
+                       backend_module_major, tbm_backend_major);
+               goto err;
+       } else if (backend_module_minor > tbm_backend_minor) {
+               TBM_ERR("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
+                       backend_module_minor, tbm_backend_minor);
+               goto err;
        }
 
-       if (bo->lock_cnt < 0)
-               bo->lock_cnt = 0;
-
-       TBM_DBG_LOCK(">> UNLOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
-}
-
-static int
-_tbm_bo_is_valid(tbm_bo bo)
-{
-       tbm_bo old_data = NULL;
-
-       if (bo == NULL || gBufMgr == NULL) {
-               TBM_LOG_E("error: bo is NULL or tbm_bufmgr was deinited\n");
-               return 0;
+       if (!backend_module_data->init) {
+               TBM_ERR("Error: module does not supply init symbol.\n");
+               goto err;
        }
 
-       if (LIST_IS_EMPTY(&gBufMgr->bo_list)) {
-               TBM_LOG_E("error: gBufMgr->bo_list is EMPTY.\n");
-               return 0;
+       if (!backend_module_data->deinit)       {
+               TBM_ERR("Error: module does not supply deinit symbol.\n");
+               goto err;
        }
 
-       LIST_FOR_EACH_ENTRY(old_data, &gBufMgr->bo_list, item_link) {
-               if (old_data == bo)
-                       return 1;
+       bufmgr_data = backend_module_data->init(bufmgr, &error);
+       if (!bufmgr_data) {
+               TBM_ERR("Fail to init module(%s)\n", file);
+               goto err;
        }
 
-       TBM_LOG_E("error: No valid bo(%p).\n", bo);
-
-       return 0;
-}
-
-static void
-_tbm_bo_free(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr = bo->bufmgr;
-
-       /* destory the user_data_list */
-       if (!LIST_IS_EMPTY(&bo->user_data_list)) {
-               tbm_user_data *old_data = NULL, *tmp;
-
-               LIST_FOR_EACH_ENTRY_SAFE(old_data, tmp,
-                               &bo->user_data_list, item_link) {
-                       TBM_DBG("free user_data\n");
-                       user_data_delete(old_data);
-               }
+       /* check the mandatory symbols of the backend module */
+       if (!_tbm_backend_check_bufmgr_func(bufmgr->bufmgr_func)) {
+               TBM_ERR("Fail to check the bufmgr_func symboles.");
+               goto err;
        }
 
-       while (bo->lock_cnt > 0) {
-               TBM_LOG_E("error lock_cnt:%d\n", bo->lock_cnt);
-               _bo_unlock(bo);
-               bo->lock_cnt--;
+       if (!_tbm_backend_check_bufmgr_bo(bufmgr->bo_func)) {
+               TBM_ERR("Fail to check the bufmgr_bo symboles.");
+               goto err;
        }
 
-       /* call the bo_free */
-       bufmgr->backend->bo_free(bo);
-       bo->priv = NULL;
-
-       LIST_DEL(&bo->item_link);
-       free(bo);
-
-       bufmgr->bo_cnt--;
-}
-
-/* LCOV_EXCL_START */
-static int
-_check_version(TBMModuleVersionInfo *data)
-{
-       int abimaj, abimin;
-       int vermaj, vermin;
+       /* get the capability */
+       bufmgr->capabilities = bufmgr->bufmgr_func->bufmgr_get_capabilities(bufmgr_data, &error);
+       if (bufmgr->capabilities == TBM_BUFMGR_CAPABILITY_NONE) {
+               TBM_ERR("The capabilities of the backend module is TBM_BUFMGR_CAPABILITY_NONE.");
+               TBM_ERR("TBM_BUFMGR_CAPABILITY_SHARE_FD is the essential capability.");
+               goto err;
+       }
 
-       abimaj = GET_ABI_MAJOR(data->abiversion);
-       abimin = GET_ABI_MINOR(data->abiversion);
+       if (!(bufmgr->capabilities & TBM_BUFMGR_CAPABILITY_SHARE_FD)) {
+               TBM_ERR("The capabilities of the backend module had no TBM_BUFMGR_CAPABILITY_SHARE_FD.");
+               TBM_ERR("The tbm backend has to get TBM_BUFMGR_CAPABILITY_SHARE_FD. ");
+               goto err;
+       }
 
-       TBM_DBG("TBM module %s: vendor=\"%s\" ABI=%d,%d\n",
-           data->modname ? data->modname : "UNKNOWN!",
-           data->vendor ? data->vendor : "UNKNOWN!", abimaj, abimin);
+       bufmgr->module_data = module_data;
+       bufmgr->backend_module_data = backend_module_data;
+       bufmgr->bufmgr_data = bufmgr_data;
 
-       vermaj = GET_ABI_MAJOR(TBM_ABI_VERSION);
-       vermin = GET_ABI_MINOR(TBM_ABI_VERSION);
+       TBM_DBG("Success to load module(%s)\n", file);
+       TBM_STDOUT_INFO("Success to load module(%s)", file);
 
-       TBM_DBG("TBM ABI version %d.%d\n",
-           vermaj, vermin);
+       return 1;
 
-       if (abimaj != vermaj) {
-               TBM_LOG_E("TBM module ABI major ver(%d) doesn't match the TBM's ver(%d)\n",
-                       abimaj, vermaj);
-               return 0;
-       } else if (abimin > vermin) {
-               TBM_LOG_E("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
-                       abimin, vermin);
-               return 0;
-       }
+err:
+       if (bufmgr_data)
+               bufmgr->backend_module_data->deinit(bufmgr_data);
+       if (module_data)
+               dlclose(module_data);
 
-       return 1;
+       return 0;
 }
 
 static int
@@ -531,40 +374,40 @@ _tbm_bufmgr_load_module(tbm_bufmgr bufmgr, int fd, const char *file)
 
        module_data = dlopen(path, RTLD_LAZY);
        if (!module_data) {
-               TBM_LOG_E("failed to load module: %s(%s)\n", dlerror(), file);
+               TBM_ERR("failed to load module: %s(%s)\n", dlerror(), file);
                return 0;
        }
 
        initdata = dlsym(module_data, "tbmModuleData");
        if (!initdata) {
-               TBM_LOG_E("Error: module does not have data object.\n");
+               TBM_ERR("Error: module does not have data object.\n");
                goto err;
        }
 
        vers = initdata->vers;
        if (!vers) {
-               TBM_LOG_E("Error: module does not supply version information.\n");
+               TBM_ERR("Error: module does not supply version information.\n");
                goto err;
        }
 
        init = initdata->init;
        if (!init) {
-               TBM_LOG_E("Error: module does not supply init symbol.\n");
+               TBM_ERR("Error: module does not supply init symbol.\n");
                goto err;
        }
 
        if (!_check_version(vers)) {
-               TBM_LOG_E("Fail to check version.\n");
+               TBM_ERR("Fail to check version.\n");
                goto err;
        }
 
        if (!init(bufmgr, fd)) {
-               TBM_LOG_E("Fail to init module(%s)\n", file);
+               TBM_ERR("Fail to init module(%s)\n", file);
                goto err;
        }
 
        if (!bufmgr->backend || !bufmgr->backend->priv) {
-               TBM_LOG_E("Error: module(%s) wrong operation. Check backend or backend's priv.\n", file);
+               TBM_ERR("Error: module(%s) wrong operation. Check backend or backend's priv.\n", file);
                goto err;
        }
 
@@ -585,14 +428,20 @@ _tbm_load_module(tbm_bufmgr bufmgr, int fd)
        struct dirent **namelist;
        int ret = 0, n;
 
-       /* load bufmgr priv from default lib */
-       if (_tbm_bufmgr_load_module(bufmgr, fd, DEFAULT_LIB))
+       /* try to load the new backend module */
+       ret = _tbm_backend_load_module(bufmgr, DEFAULT_LIB);
+       if (ret)
+               return 1;
+
+       /* try to load the old(deprecated) backend mdoule */
+       ret = _tbm_bufmgr_load_module(bufmgr, fd, DEFAULT_LIB);
+       if (ret)
                return 1;
 
        /* load bufmgr priv from configured path */
        n = scandir(BUFMGR_MODULE_DIR, &namelist, 0, alphasort);
        if (n < 0) {
-               TBM_LOG_E("no files : %s\n", BUFMGR_MODULE_DIR);
+               TBM_ERR("no files : %s\n", BUFMGR_MODULE_DIR);
                return 0;
        }
 
@@ -600,9 +449,12 @@ _tbm_load_module(tbm_bufmgr bufmgr, int fd)
                if (!ret && strstr(namelist[n]->d_name, PREFIX_LIB)) {
                        const char *p = strstr(namelist[n]->d_name, SUFFIX_LIB);
 
-                       if (p && !strcmp(p, SUFFIX_LIB))
-                               ret = _tbm_bufmgr_load_module(bufmgr, fd,
-                                                       namelist[n]->d_name);
+                       if (p && !strcmp(p, SUFFIX_LIB)) {
+                               ret = _tbm_backend_load_module(bufmgr, namelist[n]->d_name);
+                               if (!ret)
+                                       ret = _tbm_bufmgr_load_module(bufmgr, fd,
+                                                                       namelist[n]->d_name);
+                       }
                }
 
                free(namelist[n]);
@@ -614,8 +466,8 @@ _tbm_load_module(tbm_bufmgr bufmgr, int fd)
 }
 /* LCOV_EXCL_STOP */
 
-tbm_bufmgr
-tbm_bufmgr_init(int fd)
+static tbm_bufmgr
+_tbm_bufmgr_init(int fd, int server)
 {
 #ifdef TBM_BUFMGR_INIT_TIME
        struct timeval start_tv, end_tv;
@@ -627,46 +479,23 @@ tbm_bufmgr_init(int fd)
        gettimeofday(&start_tv, NULL);
 #endif
 
-       /* LCOV_EXCL_START */
-#ifdef HAVE_DLOG
-       env = getenv("TBM_DLOG");
-       if (env) {
-               bDlog = atoi(env);
-               TBM_LOG_D("TBM_DLOG=%s\n", env);
-       } else
-               bDlog = 1;
-#endif
-
-#ifdef DEBUG
-       env = getenv("TBM_DEBUG");
-       if (env) {
-               bDebug = atoi(env);
-               TBM_LOG_D("TBM_DEBUG=%s\n", env);
-       } else
-               bDebug = 0;
-#endif
-
-#ifdef TRACE
-       env = getenv("TBM_TRACE");
-       if (env) {
-               bTrace = atoi(env);
-               TBM_LOG_D("TBM_TRACE=%s\n", env);
-       } else
-               bTrace = 0;
-#endif
+       bDlog = 1;
+       trace_mask = 0;
 
        pthread_mutex_lock(&gLock);
 
+       _tbm_set_last_result(TBM_ERROR_NONE);
+
        if (fd >= 0) {
-               TBM_LOG_W("!!!!!WARNING:: The tbm_bufmgr_init DOSE NOT use argument fd ANYMORE.\n");
-               TBM_LOG_W("!!!!!WARNING:: IT WILL BE CHANGED like tbm_bufmgr_init(int fd) --> tbm_bufmgr_init(void).\n");
+               TBM_WRN("!!!!!WARNING:: The tbm_bufmgr_init DOSE NOT use argument fd ANYMORE.\n");
+               TBM_WRN("!!!!!WARNING:: IT WILL BE CHANGED like tbm_bufmgr_init(int fd) --> tbm_bufmgr_init(void).\n");
        }
 
 
        /* initialize buffer manager */
        if (gBufMgr) {
                gBufMgr->ref_count++;
-               TBM_TRACE("reuse  tbm_bufmgr(%p) ref_count(%d) fd(%d)\n", gBufMgr, gBufMgr->ref_count, gBufMgr->fd);
+               TBM_DBG("reuse  tbm_bufmgr(%p) ref_count(%d) fd(%d)\n", gBufMgr, gBufMgr->ref_count, gBufMgr->fd);
                pthread_mutex_unlock(&gLock);
                return gBufMgr;
        }
@@ -676,50 +505,52 @@ tbm_bufmgr_init(int fd)
        /* allocate bufmgr */
        gBufMgr = calloc(1, sizeof(struct _tbm_bufmgr));
        if (!gBufMgr) {
-               _tbm_set_last_result(TBM_BO_ERROR_HEAP_ALLOC_FAILED);
-               TBM_TRACE("error: fail to alloc bufmgr fd(%d)\n", fd);
+               TBM_ERR("error: fail to alloc bufmgr fd(%d)\n", fd);
+               _tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
                pthread_mutex_unlock(&gLock);
                return NULL;
        }
 
        gBufMgr->fd = fd;
 
+       /* set the display_server flag before loading the backend module */
+       if (server) {
+               TBM_INFO("The tbm_bufmgr(%p) is used by display server. Need to bind the native_display.\n", gBufMgr);
+               gBufMgr->display_server = 1;
+       }
+
        /* load bufmgr priv from env */
+       TBM_STDOUT_INFO("loading backend module");
        if (!_tbm_load_module(gBufMgr, gBufMgr->fd)) {
-               _tbm_set_last_result(TBM_BO_ERROR_LOAD_MODULE_FAILED);
-               TBM_LOG_E("error : Fail to load bufmgr backend\n");
+               TBM_ERR("error : Fail to load bufmgr backend\n");
+               _tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
                free(gBufMgr);
                gBufMgr = NULL;
                pthread_mutex_unlock(&gLock);
                return NULL;
 
        }
+       TBM_STDOUT_INFO("loading backend module done");
        /* LCOV_EXCL_STOP */
 
-       /* log for tbm backend_flag */
-       TBM_DBG("backend flag:%x:", gBufMgr->backend->flags);
-       TBM_DBG("\n");
-
        gBufMgr->ref_count = 1;
 
-       TBM_DBG("create tizen bufmgr:%p ref_count:%d\n",
+       TBM_INFO("create tizen bufmgr:%p ref_count:%d\n",
            gBufMgr, gBufMgr->ref_count);
 
-       /* setup the lock_type */
+       /* setup the bo_lock_type */
        env = getenv("BUFMGR_LOCK_TYPE");
        if (env && !strcmp(env, "always"))
-               gBufMgr->lock_type = LOCK_TRY_ALWAYS;
+               gBufMgr->bo_lock_type = TBM_BUFMGR_BO_LOCK_TYPE_ALWAYS;
        else if (env && !strcmp(env, "none"))
-               gBufMgr->lock_type = LOCK_TRY_NEVER;
+               gBufMgr->bo_lock_type = TBM_BUFMGR_BO_LOCK_TYPE_NEVER;
        else if (env && !strcmp(env, "once"))
-               gBufMgr->lock_type = LOCK_TRY_ONCE;
+               gBufMgr->bo_lock_type = TBM_BUFMGR_BO_LOCK_TYPE_ONCE;
        else
-               gBufMgr->lock_type = LOCK_TRY_ALWAYS;
+               gBufMgr->bo_lock_type = TBM_BUFMGR_BO_LOCK_TYPE_ALWAYS;
 
        TBM_DBG("BUFMGR_LOCK_TYPE=%s\n", env ? env : "default:once");
 
-       TBM_TRACE("create tbm_bufmgr(%p) ref_count(%d) fd(%d)\n", gBufMgr, gBufMgr->ref_count, fd);
-
        /* intialize bo_list */
        LIST_INITHEAD(&gBufMgr->bo_list);
 
@@ -735,7 +566,7 @@ tbm_bufmgr_init(int fd)
 #ifdef TBM_BUFMGR_INIT_TIME
        /* get the end tv */
        gettimeofday(&end_tv, NULL);
-       TBM_LOG_I("tbm_bufmgr_init time: %ld ms", ((end_tv.tv_sec * 1000 + end_tv.tv_usec / 1000) - (start_tv.tv_sec * 1000 + start_tv.tv_usec / 1000)));
+       TBM_INFO("tbm_bufmgr_init time: %ld ms", ((end_tv.tv_sec * 1000 + end_tv.tv_usec / 1000) - (start_tv.tv_sec * 1000 + start_tv.tv_usec / 1000)));
 #endif
 
        pthread_mutex_unlock(&gLock);
@@ -743,6 +574,16 @@ tbm_bufmgr_init(int fd)
        return gBufMgr;
 }
 
+tbm_bufmgr
+tbm_bufmgr_init(int fd)
+{
+       tbm_bufmgr bufmgr;
+
+       bufmgr = _tbm_bufmgr_init(fd, 0);
+
+       return bufmgr;
+}
+
 void
 tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
 {
@@ -750,9 +591,10 @@ tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
 
        _tbm_bufmgr_mutex_lock();
        pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        if (!gBufMgr) {
-               TBM_LOG_E("gBufmgr already destroy: bufmgr:%p\n", bufmgr);
+               TBM_ERR("gBufmgr already destroy: bufmgr:%p\n", bufmgr);
                pthread_mutex_unlock(&gLock);
                _tbm_bufmgr_mutex_unlock();
                return;
@@ -760,7 +602,7 @@ tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
 
        bufmgr->ref_count--;
        if (bufmgr->ref_count > 0) {
-               TBM_TRACE("reduce a ref_count(%d) of tbm_bufmgr(%p)\n", bufmgr->ref_count, bufmgr);
+               TBM_DBG("reduce a ref_count(%d) of tbm_bufmgr(%p)\n", bufmgr->ref_count, bufmgr);
                pthread_mutex_unlock(&gLock);
                _tbm_bufmgr_mutex_unlock();
                return;
@@ -771,9 +613,10 @@ tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
                tbm_bo bo = NULL, tmp;
 
                LIST_FOR_EACH_ENTRY_SAFE(bo, tmp, &bufmgr->bo_list, item_link) {
-                       TBM_LOG_E("Un-freed bo(%p, ref:%d)\n", bo, bo->ref_cnt);
+                       TBM_ERR("Un-freed bo(%p, ref:%d)\n", bo, bo->ref_cnt);
                        _tbm_bo_free(bo);
                }
+               LIST_DELINIT(&bufmgr->bo_list);
        }
 
        /* destroy surf_list */
@@ -781,18 +624,28 @@ tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
                tbm_surface_h surf = NULL, tmp;
 
                LIST_FOR_EACH_ENTRY_SAFE(surf, tmp, &bufmgr->surf_list, item_link) {
-                       TBM_LOG_E("Un-freed surf(%p, ref:%d)\n", surf, surf->refcnt);
+                       TBM_ERR("Un-freed surf(%p, ref:%d)\n", surf, surf->refcnt);
                        tbm_surface_destroy(surf);
                }
+               LIST_DELINIT(&bufmgr->surf_list);
        }
 
-       /* destroy bufmgr priv */
-       bufmgr->backend->bufmgr_deinit(bufmgr->backend->priv);
-       bufmgr->backend->priv = NULL;
-       tbm_backend_free(bufmgr->backend);
-       bufmgr->backend = NULL;
+       if (bufmgr->backend_module_data) {
+               /* deinit and backend destroys the backend func and data */
+               bufmgr->backend_module_data->deinit(bufmgr->bufmgr_data);
+               bufmgr->bo_func = NULL;
+               bufmgr->bufmgr_func = NULL;
+               bufmgr->bufmgr_data = NULL;
+               bufmgr->backend_module_data = NULL;
+       } else {
+               /* destroy bufmgr priv */
+               bufmgr->backend->bufmgr_deinit(bufmgr->backend->priv);
+               bufmgr->backend->priv = NULL;
+               tbm_backend_free(bufmgr->backend);
+               bufmgr->backend = NULL;
+       }
 
-       TBM_TRACE("destroy tbm_bufmgr(%p)\n", bufmgr);
+       TBM_INFO("destroy tbm_bufmgr(%p)\n", bufmgr);
 
        dlclose(bufmgr->module_data);
 
@@ -806,824 +659,203 @@ tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
        _tbm_bufmgr_mutex_unlock();
 }
 
-int
-tbm_bo_size(tbm_bo bo)
+unsigned int
+tbm_bufmgr_get_capability(tbm_bufmgr bufmgr)
 {
-       tbm_bufmgr bufmgr = gBufMgr;
-       int size;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       size = bufmgr->backend->bo_size(bo);
-
-       TBM_TRACE("bo(%p) size(%d)\n", bo, size);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return size;
-}
+       unsigned int capabilities = TBM_BUFMGR_CAPABILITY_NONE;
 
-tbm_bo
-tbm_bo_ref(tbm_bo bo)
-{
        _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), NULL);
-
-       bo->ref_cnt++;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), TBM_BUFMGR_CAPABILITY_NONE);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, TBM_BUFMGR_CAPABILITY_NONE);
 
-       TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt);
+       capabilities = bufmgr->capabilities;
 
        _tbm_bufmgr_mutex_unlock();
 
-       return bo;
+       return capabilities;
 }
 
-void
-tbm_bo_unref(tbm_bo bo)
+/* LCOV_EXCL_START */
+char *
+tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr)
 {
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_IF_FAIL(gBufMgr);
-       TBM_BUFMGR_RETURN_IF_FAIL(_tbm_bo_is_valid(bo));
+       char app_name[255] = {0,}, title[512] = {0,};
+       tbm_surface_debug_data *debug_old_data = NULL;
+       char *str;
+       int len = 1024*4;
+       int c = 0;
+       int size;
+       tbm_error_e error;
+       long pid = 0;
 
-       TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt - 1);
+       pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
-       if (bo->ref_cnt <= 0) {
-               _tbm_bufmgr_mutex_unlock();
-               return;
+       if (!TBM_BUFMGR_IS_VALID(bufmgr) || (bufmgr != gBufMgr)) {
+               TBM_ERR("invalid bufmgr\n");
+               _tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
+               pthread_mutex_unlock(&gLock);
+               return NULL;
        }
 
-       bo->ref_cnt--;
-       if (bo->ref_cnt == 0)
-               _tbm_bo_free(bo);
-
-       _tbm_bufmgr_mutex_unlock();
-}
-
-tbm_bo
-tbm_bo_alloc(tbm_bufmgr bufmgr, int size, int flags)
-{
-       void *bo_priv;
-       tbm_bo bo;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(size > 0, NULL);
-
-       bo = calloc(1, sizeof(struct _tbm_bo));
-       if (!bo) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to create of tbm_bo size(%d) flag(%s)\n",
-                               size, _tbm_flag_to_str(flags));
-               _tbm_set_last_result(TBM_BO_ERROR_HEAP_ALLOC_FAILED);
-               _tbm_bufmgr_mutex_unlock();
+       str = malloc(len);
+       if (!str) {
+               TBM_ERR("Fail to allocate the string.\n");
+               _tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
+               pthread_mutex_unlock(&gLock);
                return NULL;
-               /* LCOV_EXCL_STOP */
        }
 
-       _tbm_util_check_bo_cnt(bufmgr);
+       TBM_SNRPRINTF(str, len, c, "\n");
+       pid = syscall(SYS_getpid);
+       _tbm_util_get_appname_from_pid(pid, app_name);
+       _tbm_util_get_appname_brief(app_name);
+       TBM_SNRPRINTF(str, len, c, "===========================================TBM DEBUG: %s(%ld)===========================================\n",
+                 app_name, pid);
 
-       bo->bufmgr = bufmgr;
+       snprintf(title, 255, "%s", "no  surface     refcnt  width  height  bpp  size    n_b  n_p  flags    format    app_name              ");
 
-       bo_priv = bufmgr->backend->bo_alloc(bo, size, flags);
-       if (!bo_priv) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to create of tbm_bo size(%d) flag(%s)\n",
-                               size, _tbm_flag_to_str(flags));
-               _tbm_set_last_result(TBM_BO_ERROR_BO_ALLOC_FAILED);
-               free(bo);
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
+       if (!LIST_IS_EMPTY(&bufmgr->debug_key_list)) {
+               LIST_FOR_EACH_ENTRY(debug_old_data, &bufmgr->debug_key_list, item_link) {
+                       strncat(title, "  ", MAX_SIZE_N(title));
+                       strncat(title, debug_old_data->key, MAX_SIZE_N(title));
+               }
        }
 
-       bufmgr->bo_cnt++;
+       TBM_SNRPRINTF(str, len, c, "[tbm_surface information]\n");
+       TBM_SNRPRINTF(str, len, c, "%s\n", title);
 
-       bo->ref_cnt = 1;
-       bo->flags = flags;
-       bo->priv = bo_priv;
+       /* show the tbm_surface information in surf_list */
+       if (!LIST_IS_EMPTY(&bufmgr->surf_list)) {
+               tbm_surface_h surf = NULL;
+               int surf_cnt = 0;
 
-       TBM_TRACE("bo(%p) size(%d) refcnt(%d), flag(%s)\n", bo, size, bo->ref_cnt,
-                       _tbm_flag_to_str(bo->flags));
+               LIST_FOR_EACH_ENTRY(surf, &bufmgr->surf_list, item_link) {
+                       char data[512] = {0,};
+                       unsigned int surf_pid = 0;
+                       int i;
 
-       LIST_INITHEAD(&bo->user_data_list);
+                       surf_pid = _tbm_surface_internal_get_debug_pid(surf);
+                       if (!surf_pid) {
+                               /* if pid is null, set the self_pid */
+                               surf_pid = syscall(SYS_getpid);;
+                       }
 
-       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
+                       memset(app_name, 0x0, 255 * sizeof(char));
+                       if (geteuid() == 0) {
+                               _tbm_util_get_appname_from_pid(surf_pid, app_name);
+                               _tbm_util_get_appname_brief(app_name);
+                       } else {
+                               snprintf(app_name, sizeof(app_name), "%d", surf_pid);
+                       }
 
-       _tbm_bufmgr_mutex_unlock();
+                       snprintf(data, 255, "%-3d %-11p   %-5d %-6u %-7u %-4u %-7u  %-3d  %-3d %-8d %-9s %-22s",
+                                 ++surf_cnt,
+                                 surf,
+                                 surf->refcnt,
+                                 surf->info.width,
+                                 surf->info.height,
+                                 surf->info.bpp,
+                                 surf->info.size / 1024,
+                                 surf->num_bos,
+                                 surf->num_planes,
+                                 surf->flags,
+                                 _tbm_surface_internal_format_to_str(surf->info.format) + 11,
+                                 app_name);
 
-       return bo;
-}
+                       if (!LIST_IS_EMPTY(&bufmgr->debug_key_list)) {
+                               LIST_FOR_EACH_ENTRY(debug_old_data, &bufmgr->debug_key_list, item_link) {
+                                       char *value;
 
-tbm_bo
-tbm_bo_import(tbm_bufmgr bufmgr, unsigned int key)
-{
-       void *bo_priv;
-       tbm_bo bo;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, NULL);
-
-       if (!bufmgr->backend->bo_import) {
-               /* LCOV_EXCL_START */
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       _tbm_util_check_bo_cnt(bufmgr);
-
-       bo = calloc(1, sizeof(struct _tbm_bo));
-       if (!bo) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to import of tbm_bo by key(%d)\n", key);
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       bo->bufmgr = bufmgr;
-
-       bo_priv = bufmgr->backend->bo_import(bo, key);
-       if (!bo_priv) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to import of tbm_bo by key(%d)\n", key);
-               _tbm_set_last_result(TBM_BO_ERROR_IMPORT_FAILED);
-               free(bo);
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       if (!LIST_IS_EMPTY(&bufmgr->bo_list)) {
-               tbm_bo bo2 = NULL;
-
-               LIST_FOR_EACH_ENTRY(bo2, &bufmgr->bo_list, item_link) {
-                       if (bo2->priv == bo_priv) {
-                               TBM_TRACE("find bo(%p) ref(%d) key(%d) flag(%s) in list\n",
-                                               bo2, bo2->ref_cnt, key,
-                                               _tbm_flag_to_str(bo2->flags));
-                               bo2->ref_cnt++;
-                               free(bo);
-                               _tbm_bufmgr_mutex_unlock();
-                               return bo2;
-                       }
-               }
-       }
-
-       bufmgr->bo_cnt++;
-
-       bo->ref_cnt = 1;
-       bo->priv = bo_priv;
-
-       if (bufmgr->backend->bo_get_flags)
-               bo->flags = bufmgr->backend->bo_get_flags(bo);
-       else
-               bo->flags = TBM_BO_DEFAULT;
-
-       TBM_TRACE("import new bo(%p) ref(%d) key(%d) flag(%s) in list\n",
-                         bo, bo->ref_cnt, key, _tbm_flag_to_str(bo->flags));
-
-       LIST_INITHEAD(&bo->user_data_list);
-
-       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return bo;
-}
-
-tbm_bo
-tbm_bo_import_fd(tbm_bufmgr bufmgr, tbm_fd fd)
-{
-       void *bo_priv;
-       tbm_bo bo;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, NULL);
-
-       if (!bufmgr->backend->bo_import_fd) {
-               /* LCOV_EXCL_START */
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       _tbm_util_check_bo_cnt(bufmgr);
-
-       bo = calloc(1, sizeof(struct _tbm_bo));
-       if (!bo) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       bo->bufmgr = bufmgr;
-
-       bo_priv = bufmgr->backend->bo_import_fd(bo, fd);
-       if (!bo_priv) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: fail to import tbm_bo by tbm_fd(%d)\n", fd);
-               _tbm_set_last_result(TBM_BO_ERROR_IMPORT_FD_FAILED);
-               free(bo);
-               _tbm_bufmgr_mutex_unlock();
-               return NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       if (!LIST_IS_EMPTY(&bufmgr->bo_list)) {
-               tbm_bo bo2 = NULL;
-
-               LIST_FOR_EACH_ENTRY(bo2, &bufmgr->bo_list, item_link) {
-                       if (bo2->priv == bo_priv) {
-                               TBM_TRACE("find bo(%p) ref(%d) fd(%d) flag(%s) in list\n",
-                                               bo2, bo2->ref_cnt, fd,
-                                               _tbm_flag_to_str(bo2->flags));
-                               bo2->ref_cnt++;
-                               free(bo);
-                               _tbm_bufmgr_mutex_unlock();
-                               return bo2;
-                       }
-               }
-       }
-
-       bufmgr->bo_cnt++;
-
-       bo->ref_cnt = 1;
-       bo->priv = bo_priv;
-
-       if (bufmgr->backend->bo_get_flags)
-               bo->flags = bufmgr->backend->bo_get_flags(bo);
-       else
-               bo->flags = TBM_BO_DEFAULT;
-
-       TBM_TRACE("import bo(%p) ref(%d) fd(%d) flag(%s)\n",
-                       bo, bo->ref_cnt, fd, _tbm_flag_to_str(bo->flags));
-
-       LIST_INITHEAD(&bo->user_data_list);
-
-       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return bo;
-}
-
-tbm_key
-tbm_bo_export(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       tbm_key ret;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       if (!bufmgr->backend->bo_export) {
-               /* LCOV_EXCL_START */
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-               /* LCOV_EXCL_STOP */
-       }
-
-       ret = bufmgr->backend->bo_export(bo);
-       if (!ret) {
-               /* LCOV_EXCL_START */
-               _tbm_set_last_result(TBM_BO_ERROR_EXPORT_FAILED);
-               TBM_LOG_E("error: bo(%p) tbm_key(%d)\n", bo, ret);
-               _tbm_bufmgr_mutex_unlock();
-               return ret;
-               /* LCOV_EXCL_STOP */
-       }
-
-       TBM_TRACE("bo(%p) tbm_key(%u)\n", bo, ret);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return ret;
-}
-
-tbm_fd
-tbm_bo_export_fd(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       tbm_fd ret;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), -1);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), -1);
-
-       if (!bufmgr->backend->bo_export_fd) {
-               /* LCOV_EXCL_START */
-               _tbm_bufmgr_mutex_unlock();
-               return -1;
-               /* LCOV_EXCL_STOP */
-       }
-
-       ret = bufmgr->backend->bo_export_fd(bo);
-       if (ret < 0) {
-               /* LCOV_EXCL_START */
-               _tbm_set_last_result(TBM_BO_ERROR_EXPORT_FD_FAILED);
-               TBM_LOG_E("error: bo(%p) tbm_fd(%d)\n", bo, ret);
-               _tbm_bufmgr_mutex_unlock();
-               return ret;
-               /* LCOV_EXCL_STOP */
-       }
-
-       TBM_TRACE("bo(%p) tbm_fd(%d)\n", bo, ret);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return ret;
-}
-
-tbm_bo_handle
-tbm_bo_get_handle(tbm_bo bo, int device)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       tbm_bo_handle bo_handle;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), (tbm_bo_handle) NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), (tbm_bo_handle) NULL);
-
-       bo_handle = bufmgr->backend->bo_get_handle(bo, device);
-       if (bo_handle.ptr == NULL) {
-               /* LCOV_EXCL_START */
-               _tbm_set_last_result(TBM_BO_ERROR_GET_HANDLE_FAILED);
-               TBM_LOG_E("error: bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
-               _tbm_bufmgr_mutex_unlock();
-               return (tbm_bo_handle) NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       TBM_TRACE("bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return bo_handle;
-}
-
-tbm_bo_handle
-tbm_bo_map(tbm_bo bo, int device, int opt)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       tbm_bo_handle bo_handle;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), (tbm_bo_handle) NULL);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), (tbm_bo_handle) NULL);
-
-       if (!_tbm_bo_lock(bo, device, opt)) {
-               _tbm_set_last_result(TBM_BO_ERROR_LOCK_FAILED);
-               TBM_LOG_E("error: fail to lock bo:%p)\n", bo);
-               _tbm_bufmgr_mutex_unlock();
-               return (tbm_bo_handle) NULL;
-       }
-
-       bo_handle = bufmgr->backend->bo_map(bo, device, opt);
-       if (bo_handle.ptr == NULL) {
-               /* LCOV_EXCL_START */
-               _tbm_set_last_result(TBM_BO_ERROR_MAP_FAILED);
-               TBM_LOG_E("error: fail to map bo:%p\n", bo);
-               _tbm_bo_unlock(bo);
-               _tbm_bufmgr_mutex_unlock();
-               return (tbm_bo_handle) NULL;
-               /* LCOV_EXCL_STOP */
-       }
-
-       /* increase the map_count */
-       bo->map_cnt++;
-
-       TBM_TRACE("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return bo_handle;
-}
-
-int
-tbm_bo_unmap(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       int ret;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       ret = bufmgr->backend->bo_unmap(bo);
-       if (!ret) {
-               /* LCOV_EXCL_START */
-               TBM_LOG_E("error: bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
-               _tbm_set_last_result(TBM_BO_ERROR_UNMAP_FAILED);
-               _tbm_bufmgr_mutex_unlock();
-               return ret;
-               /* LCOV_EXCL_STOP */
-       }
-
-       /* decrease the map_count */
-       bo->map_cnt--;
-
-       TBM_TRACE("bo(%p) map_cnt(%d)\n", bo, bo->map_cnt);
-
-       _tbm_bo_unlock(bo);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return ret;
-}
-
-int
-tbm_bo_swap(tbm_bo bo1, tbm_bo bo2)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-       void *temp;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo1), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo2), 0);
-
-       TBM_TRACE("before: bo1(%p) bo2(%p)\n", bo1, bo2);
-
-       if (bufmgr->backend->bo_size(bo1) != bufmgr->backend->bo_size(bo2)) {
-               _tbm_set_last_result(TBM_BO_ERROR_SWAP_FAILED);
-               TBM_LOG_E("error: bo1(%p) bo2(%p)\n", bo1, bo2);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       TBM_TRACE("after: bo1(%p) bo2(%p)\n", bo1, bo2);
-
-       temp = bo1->priv;
-       bo1->priv = bo2->priv;
-       bo2->priv = temp;
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return 1;
-}
-
-int
-tbm_bo_locked(tbm_bo bo)
-{
-       tbm_bufmgr bufmgr = gBufMgr;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       if (bufmgr->lock_type == LOCK_TRY_NEVER) {
-               TBM_LOG_E("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       if (bo->lock_cnt > 0) {
-               TBM_TRACE("error: bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
-               _tbm_bufmgr_mutex_unlock();
-               return 1;
-       }
-
-       TBM_TRACE("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
-       _tbm_bufmgr_mutex_unlock();
-
-       return 0;
-}
-
-int
-tbm_bo_add_user_data(tbm_bo bo, unsigned long key,
-                    tbm_data_free data_free_func)
-{
-       tbm_user_data *data;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       /* check if the data according to the key exist if so, return false. */
-       data = user_data_lookup(&bo->user_data_list, key);
-       if (data) {
-               TBM_TRACE("warning: user data already exist key(%ld)\n", key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       data = user_data_create(key, data_free_func);
-       if (!data) {
-               TBM_LOG_E("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, data->data);
-
-       LIST_ADD(&data->item_link, &bo->user_data_list);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return 1;
-}
-
-int
-tbm_bo_set_user_data(tbm_bo bo, unsigned long key, void *data)
-{
-       tbm_user_data *old_data;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       if (LIST_IS_EMPTY(&bo->user_data_list)) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       old_data = user_data_lookup(&bo->user_data_list, key);
-       if (!old_data) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       if (old_data->data && old_data->free_func)
-               old_data->free_func(old_data->data);
-       old_data->data = data;
-
-       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return 1;
-}
-
-int
-tbm_bo_get_user_data(tbm_bo bo, unsigned long key, void **data)
-{
-       tbm_user_data *old_data;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       if (!data || LIST_IS_EMPTY(&bo->user_data_list)) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       old_data = user_data_lookup(&bo->user_data_list, key);
-       if (!old_data) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               *data = NULL;
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       *data = old_data->data;
-
-       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return 1;
-}
-
-int
-tbm_bo_delete_user_data(tbm_bo bo, unsigned long key)
-{
-       tbm_user_data *old_data;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       if (LIST_IS_EMPTY(&bo->user_data_list)) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       old_data = user_data_lookup(&bo->user_data_list, key);
-       if (!old_data) {
-               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
-
-       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
-
-       user_data_delete(old_data);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return 1;
-}
-
-unsigned int
-tbm_bufmgr_get_capability(tbm_bufmgr bufmgr)
-{
-       unsigned int capabilities = TBM_BUFMGR_CAPABILITY_NONE;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), TBM_BUFMGR_CAPABILITY_NONE);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, TBM_BUFMGR_CAPABILITY_NONE);
-
-       TBM_TRACE("tbm_bufmgr(%p) capability(%u)\n", bufmgr, bufmgr->capabilities);
-
-       capabilities = bufmgr->capabilities;
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return capabilities;
-}
-
-int
-tbm_bo_get_flags(tbm_bo bo)
-{
-       int flags;
-
-       _tbm_bufmgr_mutex_lock();
-
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
-
-       flags = bo->flags;
-
-       TBM_TRACE("bo(%p)\n", bo);
-
-       _tbm_bufmgr_mutex_unlock();
-
-       return flags;
-}
-
-/* LCOV_EXCL_START */
-tbm_error_e
-tbm_get_last_error(void)
-{
-       return tbm_last_error;
-}
-
-void
-tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr, char *str, int *len)
-{
-       char app_name[255] = {0,}, title[512] = {0,};
-       tbm_surface_debug_data *debug_old_data = NULL;
-
-       pthread_mutex_lock(&gLock);
-
-       if (!TBM_BUFMGR_IS_VALID(bufmgr) || (bufmgr != gBufMgr)) {
-               TBM_LOG_E("invalid bufmgr\n");
-               pthread_mutex_unlock(&gLock);
-               return;
-       }
-
-       TBM_SNPRINTF(str, len, "\n");
-       _tbm_util_get_appname_from_pid(getpid(), app_name);
-       _tbm_util_get_appname_brief(app_name);
-       TBM_SNPRINTF(str, len, "============TBM DEBUG: %s(%d)===========================\n",
-                 app_name, getpid());
-
-       snprintf(title, 255, "%s", "no  surface     refcnt  width  height  bpp  size    n_b  n_p  flags  format    app_name       ");
-
-       if (!LIST_IS_EMPTY(&bufmgr->debug_key_list)) {
-               LIST_FOR_EACH_ENTRY(debug_old_data, &bufmgr->debug_key_list, item_link) {
-                       strncat(title, "  ", 3);
-                       strncat(title, debug_old_data->key, strlen(debug_old_data->key) + 1);
-               }
-       }
-
-       TBM_SNPRINTF(str, len, "[tbm_surface information]\n");
-       TBM_SNPRINTF(str, len, "%s\n", title);
-
-       /* show the tbm_surface information in surf_list */
-       if (!LIST_IS_EMPTY(&bufmgr->surf_list)) {
-               tbm_surface_h surf = NULL;
-               int surf_cnt = 0;
-
-               LIST_FOR_EACH_ENTRY(surf, &bufmgr->surf_list, item_link) {
-                       char data[512] = {0,};
-                       unsigned int pid;
-                       int i;
-
-                       pid = _tbm_surface_internal_get_debug_pid(surf);
-                       if (!pid) {
-                               /* if pid is null, set the self_pid */
-                               pid = getpid();
-                       }
-
-                       memset(app_name, 0x0, 255 * sizeof(char));
-                       _tbm_util_get_appname_from_pid(pid, app_name);
-                       _tbm_util_get_appname_brief(app_name);
-
-                       snprintf(data, 255, "%-2d  %-9p    %-4d  %-5u  %-6u  %-3u  %-6u   %-2d   %-2d    %-3d  %-8s  %-15s",
-                                 ++surf_cnt,
-                                 surf,
-                                 surf->refcnt,
-                                 surf->info.width,
-                                 surf->info.height,
-                                 surf->info.bpp,
-                                 surf->info.size / 1024,
-                                 surf->num_bos,
-                                 surf->num_planes,
-                                 surf->flags,
-                                 _tbm_surface_internal_format_to_str(surf->info.format) + 11,
-                                 app_name);
-
-                       if (!LIST_IS_EMPTY(&bufmgr->debug_key_list)) {
-                               LIST_FOR_EACH_ENTRY(debug_old_data, &bufmgr->debug_key_list, item_link) {
-                                       char *value;
-
-                                       strncat(data, "  ", 3);
+                                       strncat(data, "  ", MAX_SIZE_N(title));
 
                                        value = _tbm_surface_internal_get_debug_data(surf, debug_old_data->key);
                                        if (value)
-                                               strncat(data, value, strlen(value) + 1);
+                                               strncat(data, value, MAX_SIZE_N(title));
                                        else
-                                               strncat(data, "none", 5);
+                                               strncat(data, "none", MAX_SIZE_N(title));
                                }
                        }
-                       TBM_SNPRINTF(str, len, "%s\n", data);
+                       TBM_SNRPRINTF(str, len, c, "%s\n", data);
 
                        for (i = 0; i < surf->num_bos; i++) {
-                               TBM_SNPRINTF(str, len, " bo:%-12p  %-26d%-10d\n",
+                               if (bufmgr->backend_module_data) {
+                                       size = bufmgr->bo_func->bo_get_size(surf->bos[i]->bo_data, &error);
+                                       if (error != TBM_ERROR_NONE)
+                                               TBM_WRN("fail to get the size of bo.");
+                               } else
+                                       size = bufmgr->backend->bo_size(surf->bos[i]);
+                               TBM_SNRPRINTF(str, len, c, " bo:%-12p  %-26d%-10d\n",
                                          surf->bos[i],
                                          surf->bos[i]->ref_cnt,
-                                         bufmgr->backend->bo_size(surf->bos[i]) / 1024);
+                                         size / 1024);
                        }
                }
        } else
-               TBM_SNPRINTF(str, len, " no tbm_surfaces.\n");
-       TBM_SNPRINTF(str, len, "\n");
+               TBM_SNRPRINTF(str, len, c, " no tbm_surfaces.\n");
+       TBM_SNRPRINTF(str, len, c, "\n");
 
-       TBM_SNPRINTF(str, len, "[tbm_bo information]\n");
-       TBM_SNPRINTF(str, len, "no  bo          refcnt  size    lock_cnt  map_cnt  flags  surface\n");
+       TBM_SNRPRINTF(str, len, c, "[tbm_bo information]\n");
+       TBM_SNRPRINTF(str, len, c, "no  bo          refcnt  size    lock_cnt  map_cnt  flags   surface     name\n");
 
        /* show the tbm_bo information in bo_list */
        if (!LIST_IS_EMPTY(&bufmgr->bo_list)) {
                int bo_cnt = 0;
                tbm_bo bo = NULL;
+               tbm_key key = 0;
 
                LIST_FOR_EACH_ENTRY(bo, &bufmgr->bo_list, item_link) {
-                       TBM_SNPRINTF(str, len, "%-4d%-11p   %-4d  %-6d     %-5d     %-4u    %-3d  %-11p\n",
+                       if (bufmgr->backend_module_data) {
+                               size = bufmgr->bo_func->bo_get_size(bo->bo_data, &error);
+                               if (error != TBM_ERROR_NONE)
+                                       TBM_WRN("fail to get the size of bo.");
+                               key = bufmgr->bo_func->bo_export_key(bo->bo_data, &error);
+                               if (error != TBM_ERROR_NONE)
+                                       TBM_WRN("fail to get the tdm_key of bo.");
+                       } else {
+                               size = bufmgr->backend->bo_size(bo);
+                               key = bufmgr->backend->bo_export(bo);
+                       }
+                       TBM_SNRPRINTF(str, len, c, "%-3d %-11p   %-5d %-7d    %-6d    %-5u %-7d %-11p  %-4d\n",
                                  ++bo_cnt,
                                  bo,
                                  bo->ref_cnt,
-                                 bufmgr->backend->bo_size(bo) / 1024,
+                                 size / 1024,
                                  bo->lock_cnt,
                                  bo->map_cnt,
                                  bo->flags,
-                                 bo->surface);
+                                 bo->surface,
+                                 key);
                }
        } else
-               TBM_SNPRINTF(str, len, "no tbm_bos.\n");
-       TBM_SNPRINTF(str, len, "\n");
+               TBM_SNRPRINTF(str, len, c, "no tbm_bos.\n");
+       TBM_SNRPRINTF(str, len, c, "\n");
 
-       TBM_SNPRINTF(str, len, "===============================================================\n");
+       TBM_SNRPRINTF(str, len, c, "========================================================================================================\n");
 
        pthread_mutex_unlock(&gLock);
+
+       return str;
 }
 
 void
 tbm_bufmgr_debug_show(tbm_bufmgr bufmgr)
 {
-       char str[1024*4];
-       int len = sizeof(str);
-       tbm_bufmgr_debug_tbm_info_get(bufmgr, str, &len);
-       TBM_DEBUG("     %s", str);
+       char * str;
+       str = tbm_bufmgr_debug_tbm_info_get(bufmgr);
+       if (str) {
+               TBM_DBG("       %s", str);
+               free(str);
+       }
 }
 
 void
 tbm_bufmgr_debug_trace(tbm_bufmgr bufmgr, int onoff)
 {
        _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        TBM_BUFMGR_RETURN_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr));
        TBM_BUFMGR_RETURN_IF_FAIL(bufmgr == gBufMgr);
@@ -1637,34 +869,92 @@ tbm_bufmgr_debug_trace(tbm_bufmgr bufmgr, int onoff)
 }
 
 void
+tbm_bufmgr_debug_set_trace_mask(tbm_bufmgr bufmgr, tbm_bufmgr_debug_trace_mask mask, int set)
+{
+       _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
+
+       TBM_BUFMGR_RETURN_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr));
+       TBM_BUFMGR_RETURN_IF_FAIL(bufmgr == gBufMgr);
+
+       if (set == 1) {
+               trace_mask |= mask;
+
+               TBM_INFO("bufmgr=%p sets the trace_mask=%d\n", bufmgr, mask);
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_BO)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_BO");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE_INTERNAL)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE_INTERNAL");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE_QUEUE)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE_QUEUE");
+       } else if (set == 0) {
+               trace_mask &= ~mask;
+
+               TBM_INFO("bufmgr=%p unsets the trace_mask=%d\n", bufmgr, mask);
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_BO)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_BO");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE_INTERNAL)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE_INTERNAL");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE");
+               if (trace_mask&TBM_BUFGMR_DEBUG_TRACE_SURFACE_QUEUE)
+                       TBM_INFO("  TBM_BUFGMR_DEBUG_TRACE_SURFACE_QUEUE");
+       } else {
+               TBM_WRN("set value is wrong.(set=%d)", set);
+       }
+
+       _tbm_bufmgr_mutex_unlock();
+}
+
+void
 tbm_bufmgr_debug_dump_set_scale(double scale)
 {
        pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
        scale_factor = scale;
        pthread_mutex_unlock(&gLock);
 }
 
 int
+tbm_bufmgr_debug_get_ref_count(void)
+{
+       int refcnt;
+
+       pthread_mutex_lock(&gLock);
+
+       _tbm_set_last_result(TBM_ERROR_NONE);
+
+       refcnt = (gBufMgr) ? gBufMgr->ref_count : 0;
+
+       pthread_mutex_unlock(&gLock);
+
+       return refcnt;
+}
+
+int
 tbm_bufmgr_debug_queue_dump(char *path, int count, int onoff)
 {
        pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        if (onoff == 0) {
-               TBM_LOG_D("count=%d onoff=%d\n", count, onoff);
+               TBM_DBG("count=%d onoff=%d\n", count, onoff);
                b_dump_queue = 0;
                tbm_surface_internal_dump_end();
        } else {
                int w, h;
 
                if (path == NULL) {
-                       TBM_LOG_E("path is null");
+                       TBM_ERR("path is null");
                        pthread_mutex_unlock(&gLock);
                        return 0;
                }
-               TBM_LOG_D("path=%s count=%d onoff=%d\n", path, count, onoff);
+               TBM_DBG("path=%s count=%d onoff=%d\n", path, count, onoff);
 
                if (_tbm_util_get_max_surface_size(&w, &h) == 0) {
-                       TBM_LOG_E("Fail to get tbm_surface size.\n");
+                       TBM_ERR("Fail to get tbm_surface size.\n");
                        pthread_mutex_unlock(&gLock);
                        return 0;
                }
@@ -1676,6 +966,7 @@ tbm_bufmgr_debug_queue_dump(char *path, int count, int onoff)
        }
 
        pthread_mutex_unlock(&gLock);
+
        return 1;
 }
 
@@ -1685,16 +976,22 @@ tbm_bufmgr_debug_dump_all(char *path)
        int w, h, count = 0;
        tbm_surface_h surface = NULL;
 
-       TBM_RETURN_VAL_IF_FAIL(path != NULL, 0);
-       TBM_LOG_D("path=%s\n", path);
-
        pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
+
+       if (!path) {
+               TBM_ERR("path is null.\n");
+               pthread_mutex_unlock(&gLock);
+               return 0;
+       }
+
+       TBM_DBG("path=%s\n", path);
 
        count = _tbm_util_get_max_surface_size(&w, &h);
        if (count == 0) {
-               TBM_LOG_E("No tbm_surface.\n");
+               TBM_ERR("No tbm_surface.\n");
                pthread_mutex_unlock(&gLock);
-               return 1;
+               return 0;
        }
 
        tbm_surface_internal_dump_with_scale_start(path, w, h, count, scale_factor);
@@ -1718,51 +1015,91 @@ _tbm_bufmgr_get_bufmgr(void)
 }
 
 int
-_tbm_bo_set_surface(tbm_bo bo, tbm_surface_h surface)
+tbm_bufmgr_bind_native_display(tbm_bufmgr bufmgr, void *native_display)
 {
+       int ret;
+       tbm_error_e error;
+
        _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
-       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-       bo->surface = surface;
+       if (bufmgr->backend_module_data) {
+               if (!bufmgr->bufmgr_func->bufmgr_bind_native_display) {
+                       TBM_WRN("skip: tbm_bufmgr(%p) native_display(%p)\n",
+                                       bufmgr, native_display);
+                       _tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+                       _tbm_bufmgr_mutex_unlock();
+                       return 1;
+               }
+
+               error = bufmgr->bufmgr_func->bufmgr_bind_native_display(bufmgr->bufmgr_data, (tbm_native_display *)native_display);
+               if (error != TBM_ERROR_NONE) {
+                       TBM_ERR("error: tbm_bufmgr(%p) native_display(%p) error(%d)\n",
+                                       bufmgr, native_display, error);
+                       _tbm_set_last_result(error);
+                       _tbm_bufmgr_mutex_unlock();
+                       return 0;
+               }
+               ret = 1;
+       } else {
+               if (!bufmgr->backend->bufmgr_bind_native_display) {
+                       TBM_WRN("skip: tbm_bufmgr(%p) native_display(%p)\n",
+                                       bufmgr, native_display);
+                       _tbm_set_last_result(TBM_ERROR_NOT_SUPPORTED);
+                       _tbm_bufmgr_mutex_unlock();
+                       return 1;
+               }
+
+               ret = bufmgr->backend->bufmgr_bind_native_display(bufmgr, native_display);
+               if (!ret) {
+                       TBM_ERR("error: tbm_bufmgr(%p) native_display(%p)\n",
+                                       bufmgr, native_display);
+                       _tbm_set_last_result(TBM_ERROR_INVALID_OPERATION);
+                       _tbm_bufmgr_mutex_unlock();
+                       return 0;
+               }
+       }
+
+       TBM_INFO("tbm_bufmgr(%p) native_display(%p)\n", bufmgr, native_display);
 
        _tbm_bufmgr_mutex_unlock();
 
        return 1;
 }
 
-int
-tbm_bufmgr_bind_native_display(tbm_bufmgr bufmgr, void *NativeDisplay)
+tbm_bufmgr
+tbm_bufmgr_server_init(void)
 {
-       int ret;
+       tbm_bufmgr bufmgr;
 
+       bufmgr = _tbm_bufmgr_init(-1, 1);
+
+       return bufmgr;
+}
+
+int
+tbm_bufmgr_set_bo_lock_type(tbm_bufmgr bufmgr, tbm_bufmgr_bo_lock_type bo_lock_type)
+{
        _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(bufmgr == gBufMgr, 0);
 
-       if (!bufmgr->backend->bufmgr_bind_native_display) {
-               TBM_TRACE("skip: tbm_bufmgr(%p) NativeDisplay(%p)\n",
-                               bufmgr, NativeDisplay);
-               _tbm_bufmgr_mutex_unlock();
-               return 1;
-       }
-
-       ret = bufmgr->backend->bufmgr_bind_native_display(bufmgr, NativeDisplay);
-       if (!ret) {
-               TBM_LOG_E("error: tbm_bufmgr(%p) NativeDisplay(%p)\n",
-                               bufmgr, NativeDisplay);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
-       }
+       pthread_mutex_lock(&gLock);
+       gBufMgr->bo_lock_type = bo_lock_type;
+       pthread_mutex_unlock(&gLock);
 
-       TBM_TRACE("tbm_bufmgr(%p) NativeDisplay(%p)\n", bufmgr, NativeDisplay);
+       TBM_INFO("The bo_lock_type of the bo is %d\n", bo_lock_type);
 
        _tbm_bufmgr_mutex_unlock();
 
        return 1;
 }
 
+
 int tbm_bufmgr_get_fd_limit(void)
 {
        struct rlimit lim;
@@ -1772,4 +1109,9 @@ int tbm_bufmgr_get_fd_limit(void)
 
        return (int)lim.rlim_cur;
 }
+
+tbm_bufmgr tbm_bufmgr_get(void)
+{
+       return gBufMgr;
+}
 /* LCOV_EXCL_STOP */