bufmgr: do not print backend information on stdout
[platform/core/uifw/libtbm.git] / src / tbm_bufmgr.c
index deccc1b..6215836 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;
@@ -56,7 +50,7 @@ int b_dump_queue;
 static pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
 static pthread_mutex_t tbm_bufmgr_lock = PTHREAD_MUTEX_INITIALIZER;
 static double scale_factor = 0;
-static void _tbm_bufmgr_mutex_unlock(void);
+void _tbm_bufmgr_mutex_unlock(void);
 
 //#define TBM_BUFMGR_INIT_TIME
 
@@ -81,7 +75,8 @@ static void _tbm_bufmgr_mutex_unlock(void);
 /* 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;\
        } \
@@ -89,43 +84,22 @@ 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;\
        } \
 }
 
 /* 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);
@@ -183,16 +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;
        }
@@ -211,33 +187,177 @@ _tbm_util_get_appname_from_pid(long pid, char *str)
 static int
 _check_version(TBMModuleVersionInfo *data)
 {
-       int abimaj, abimin;
-       int vermaj, vermin;
+       int backend_module_major, backend_module_minor;
+       int tbm_backend_major, tbm_backend_minor;
 
-       abimaj = GET_ABI_MAJOR(data->abiversion);
-       abimin = GET_ABI_MINOR(data->abiversion);
+       backend_module_major = GET_ABI_MAJOR(data->abiversion);
+       backend_module_minor = GET_ABI_MINOR(data->abiversion);
 
        TBM_DBG("TBM module %s: vendor=\"%s\" ABI=%d,%d\n",
            data->modname ? data->modname : "UNKNOWN!",
-           data->vendor ? data->vendor : "UNKNOWN!", abimaj, abimin);
+           data->vendor ? data->vendor : "UNKNOWN!", backend_module_major, backend_module_minor);
 
-       vermaj = GET_ABI_MAJOR(TBM_ABI_VERSION);
-       vermin = GET_ABI_MINOR(TBM_ABI_VERSION);
+       tbm_backend_major = GET_ABI_MAJOR(TBM_ABI_VERSION);
+       tbm_backend_minor = GET_ABI_MINOR(TBM_ABI_VERSION);
 
        TBM_DBG("TBM ABI version %d.%d\n",
-           vermaj, vermin);
+           tbm_backend_major, tbm_backend_minor);
 
-       if (abimaj != vermaj) {
-               TBM_LOG_E("TBM module ABI major ver(%d) doesn't match the TBM's ver(%d)\n",
-                       abimaj, vermaj);
+       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 (abimin > vermin) {
-               TBM_LOG_E("TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
-                       abimin, vermin);
+       } 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;
+       }
+
+       return 1;
+}
+
+static int
+_tbm_backend_check_bufmgr_func(tbm_backend_bufmgr_func *bufmgr_func)
+{
+       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.");
+
+       return 1;
+}
+
+static int
+_tbm_backend_check_bufmgr_bo(tbm_backend_bo_func *bo_func)
+{
+       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.");
+
+       return 1;
+}
+
+static int
+_tbm_backend_load_module(tbm_bufmgr bufmgr, const char *file)
+{
+       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;
+
+       snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
+
+       module_data = dlopen(path, RTLD_LAZY);
+       if (!module_data) {
+               TBM_ERR("failed to load module: %s(%s)\n", dlerror(), file);
                return 0;
        }
 
+       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_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);
+
+       backend_module_major = GET_ABI_MAJOR(backend_module_data->abi_version);
+       backend_module_minor = GET_ABI_MINOR(backend_module_data->abi_version);
+
+       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);
+
+       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 (!backend_module_data->init) {
+               TBM_ERR("Error: module does not supply init symbol.\n");
+               goto err;
+       }
+
+       if (!backend_module_data->deinit)       {
+               TBM_ERR("Error: module does not supply deinit symbol.\n");
+               goto err;
+       }
+
+       bufmgr_data = backend_module_data->init(bufmgr, &error);
+       if (!bufmgr_data) {
+               TBM_ERR("Fail to init module(%s)\n", file);
+               goto err;
+       }
+
+       /* 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;
+       }
+
+       if (!_tbm_backend_check_bufmgr_bo(bufmgr->bo_func)) {
+               TBM_ERR("Fail to check the bufmgr_bo symboles.");
+               goto err;
+       }
+
+       /* 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;
+       }
+
+       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;
+       }
+
+       bufmgr->module_data = module_data;
+       bufmgr->backend_module_data = backend_module_data;
+       bufmgr->bufmgr_data = bufmgr_data;
+
+       TBM_INFO("Success to load module(%s)\n", file);
+
        return 1;
+
+err:
+       if (bufmgr_data)
+               bufmgr->backend_module_data->deinit(bufmgr_data);
+       if (module_data)
+               dlclose(module_data);
+
+       return 0;
 }
 
 static int
@@ -253,40 +373,40 @@ _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;
        }
 
@@ -307,14 +427,20 @@ _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;
        }
 
@@ -322,9 +448,12 @@ _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]);
@@ -349,46 +478,32 @@ _tbm_bufmgr_init(int fd, int server)
        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
+       bDlog = 1;
 
+       /* LCOV_EXCL_START */
 #ifdef TRACE
        env = getenv("TBM_TRACE");
        if (env) {
-               bTrace = atoi(env);
-               TBM_LOG_D("TBM_TRACE=%s\n", env);
+               trace_mask = atoi(env);
+               TBM_DBG("TBM_TRACE=%s\n", env);
        } else
-               bTrace = 0;
+               trace_mask = 0;
 #endif
 
        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;
        }
@@ -398,7 +513,8 @@ _tbm_bufmgr_init(int fd, int server)
        /* allocate bufmgr */
        gBufMgr = calloc(1, sizeof(struct _tbm_bufmgr));
        if (!gBufMgr) {
-               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;
        }
@@ -407,13 +523,14 @@ _tbm_bufmgr_init(int fd, int server)
 
        /* set the display_server flag before loading the backend module */
        if (server) {
-               TBM_LOG_I("The tbm_bufmgr(%p) is used by display server. Need to bind the native_display.\n", gBufMgr);
+               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 */
        if (!_tbm_load_module(gBufMgr, gBufMgr->fd)) {
-               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);
@@ -422,13 +539,9 @@ _tbm_bufmgr_init(int fd, int server)
        }
        /* 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 bo_lock_type */
@@ -444,8 +557,6 @@ _tbm_bufmgr_init(int fd, int server)
 
        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);
 
@@ -461,7 +572,7 @@ _tbm_bufmgr_init(int fd, int server)
 #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);
@@ -486,9 +597,10 @@ 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;
@@ -496,7 +608,7 @@ 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;
@@ -507,7 +619,7 @@ 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);
@@ -518,19 +630,28 @@ 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);
 
@@ -550,12 +671,11 @@ tbm_bufmgr_get_capability(tbm_bufmgr bufmgr)
        unsigned int capabilities = TBM_BUFMGR_CAPABILITY_NONE;
 
        _tbm_bufmgr_mutex_lock();
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        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();
@@ -572,29 +692,36 @@ tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr)
        char *str;
        int len = 1024*4;
        int c = 0;
+       int size;
+       tbm_error_e error;
+       long pid = 0;
 
        pthread_mutex_lock(&gLock);
+       _tbm_set_last_result(TBM_ERROR_NONE);
 
        if (!TBM_BUFMGR_IS_VALID(bufmgr) || (bufmgr != gBufMgr)) {
-               TBM_LOG_E("invalid bufmgr\n");
+               TBM_ERR("invalid bufmgr\n");
+               _tbm_set_last_result(TBM_ERROR_INVALID_PARAMETER);
                pthread_mutex_unlock(&gLock);
                return NULL;
        }
 
        str = malloc(len);
        if (!str) {
-               TBM_LOG_E("Fail to allocate the string.\n");
+               TBM_ERR("Fail to allocate the string.\n");
+               _tbm_set_last_result(TBM_ERROR_OUT_OF_MEMORY);
                pthread_mutex_unlock(&gLock);
                return NULL;
        }
 
        TBM_SNRPRINTF(str, len, c, "\n");
-       _tbm_util_get_appname_from_pid(getpid(), app_name);
+       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(%d)===========================\n",
-                 app_name, getpid());
+       TBM_SNRPRINTF(str, len, c, "===========================================TBM DEBUG: %s(%ld)===========================================\n",
+                 app_name, pid);
 
-       snprintf(title, 255, "%s", "no  surface     refcnt  width  height  bpp  size    n_b  n_p  flags  format    app_name       ");
+       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) {
@@ -613,20 +740,24 @@ tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr)
 
                LIST_FOR_EACH_ENTRY(surf, &bufmgr->surf_list, item_link) {
                        char data[512] = {0,};
-                       unsigned int pid;
+                       unsigned int surf_pid = 0;
                        int i;
 
-                       pid = _tbm_surface_internal_get_debug_pid(surf);
-                       if (!pid) {
+                       surf_pid = _tbm_surface_internal_get_debug_pid(surf);
+                       if (!surf_pid) {
                                /* if pid is null, set the self_pid */
-                               pid = getpid();
+                               surf_pid = syscall(SYS_getpid);;
                        }
 
                        memset(app_name, 0x0, 255 * sizeof(char));
-                       _tbm_util_get_appname_from_pid(pid, app_name);
-                       _tbm_util_get_appname_brief(app_name);
+                       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);
+                       }
 
-                       snprintf(data, 255, "%-2d  %-9p    %-4d  %-5u  %-6u  %-3u  %-6u   %-2d   %-2d    %-3d  %-8s  %-15s",
+                       snprintf(data, 255, "%-3d %-11p   %-5d %-6u %-7u %-4u %-7u  %-3d  %-3d %-8d %-9s %-22s",
                                  ++surf_cnt,
                                  surf,
                                  surf->refcnt,
@@ -656,10 +787,16 @@ tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr)
                        TBM_SNRPRINTF(str, len, c, "%s\n", data);
 
                        for (i = 0; i < surf->num_bos; i++) {
+                               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
@@ -667,30 +804,42 @@ tbm_bufmgr_debug_tbm_info_get(tbm_bufmgr bufmgr)
        TBM_SNRPRINTF(str, len, c, "\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");
+       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_SNRPRINTF(str, len, c, "%-4d%-11p   %-4d  %-6d     %-5d     %-4u    %-3d  %-11p  %-4d\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,
-                                 bufmgr->backend->bo_export(bo));
+                                 key);
                }
        } else
                TBM_SNRPRINTF(str, len, c, "no tbm_bos.\n");
        TBM_SNRPRINTF(str, len, c, "\n");
 
-       TBM_SNRPRINTF(str, len, c, "===============================================================\n");
+       TBM_SNRPRINTF(str, len, c, "========================================================================================================\n");
 
        pthread_mutex_unlock(&gLock);
 
@@ -703,7 +852,7 @@ tbm_bufmgr_debug_show(tbm_bufmgr bufmgr)
        char * str;
        str = tbm_bufmgr_debug_tbm_info_get(bufmgr);
        if (str) {
-               TBM_DEBUG("     %s", str);
+               TBM_DBG("       %s", str);
                free(str);
        }
 }
@@ -712,6 +861,7 @@ 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);
@@ -725,9 +875,50 @@ 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);
 }
@@ -735,30 +926,41 @@ tbm_bufmgr_debug_dump_set_scale(double scale)
 int
 tbm_bufmgr_debug_get_ref_count(void)
 {
-       return (gBufMgr) ? gBufMgr->ref_count : 0;
+       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;
                }
@@ -770,6 +972,7 @@ tbm_bufmgr_debug_queue_dump(char *path, int count, int onoff)
        }
 
        pthread_mutex_unlock(&gLock);
+
        return 1;
 }
 
@@ -779,16 +982,22 @@ 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);
@@ -815,27 +1024,51 @@ int
 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);
 
-       if (!bufmgr->backend->bufmgr_bind_native_display) {
-               TBM_TRACE("skip: tbm_bufmgr(%p) native_display(%p)\n",
-                               bufmgr, native_display);
-               _tbm_bufmgr_mutex_unlock();
-               return 1;
-       }
+       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;
+               }
 
-       ret = bufmgr->backend->bufmgr_bind_native_display(bufmgr, native_display);
-       if (!ret) {
-               TBM_LOG_E("error: tbm_bufmgr(%p) native_display(%p)\n",
-                               bufmgr, native_display);
-               _tbm_bufmgr_mutex_unlock();
-               return 0;
+               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_TRACE("tbm_bufmgr(%p) native_display(%p)\n", bufmgr, native_display);
+       TBM_INFO("tbm_bufmgr(%p) native_display(%p)\n", bufmgr, native_display);
 
        _tbm_bufmgr_mutex_unlock();
 
@@ -855,12 +1088,19 @@ tbm_bufmgr_server_init(void)
 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);
 
+       pthread_mutex_lock(&gLock);
        gBufMgr->bo_lock_type = bo_lock_type;
+       pthread_mutex_unlock(&gLock);
 
-       TBM_LOG_I("The bo_lock_type of the bo is %d\n", bo_lock_type);
+       TBM_INFO("The bo_lock_type of the bo is %d\n", bo_lock_type);
+
+       _tbm_bufmgr_mutex_unlock();
 
        return 1;
 }