add scale factor to tbm_bufmgr_debug_dump_all() and tbm_bufmgr_debug_queue_dump(...
[platform/core/uifw/libtbm.git] / src / tbm_bufmgr.c
old mode 100755 (executable)
new mode 100644 (file)
index 014aa53..f101e73
@@ -34,33 +34,36 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "tbm_bufmgr.h"
 #include "tbm_bufmgr_int.h"
 #include "tbm_bufmgr_backend.h"
-#include "tbm_bufmgr_tgl.h"
 #include "list.h"
 
-#define DEBUG
+#include <sys/resource.h>
+
 #ifdef DEBUG
-int bDebug = 0;
-#define DBG(...) if(bDebug&0x1) TBM_LOG (__VA_ARGS__)
-#define DBG_LOCK(...) if(bDebug&0x2) TBM_LOG (__VA_ARGS__)
-#else
-#define DBG(...)
-#define DBG_LOCK(...)
+int bDebug;
 #endif
 
-#define PREFIX_LIB    "libtbm_"
-#define SUFFIX_LIB    ".so"
-#define DEFAULT_LIB   PREFIX_LIB"default"SUFFIX_LIB
+#ifdef TRACE
+int bTrace;
+#endif
 
-#define BO_IS_CACHEABLE(bo) ((bo->flags & TBM_BO_NONCACHABLE)?0:1)
-#define DEVICE_IS_CACHE_AWARE(device) ((device == TBM_DEVICE_CPU)?(1):(0))
+#ifdef HAVE_DLOG
+int bDlog;
+#endif
+
+tbm_bufmgr gBufMgr;
+int b_dump_queue;
 
-/* tgl key values */
-#define GLOBAL_KEY   ((unsigned int)(-1))
-#define INITIAL_KEY  ((unsigned int)(-2))
+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);
 
-#define CACHE_OP_CREATE     (-1)
-#define CACHE_OP_ATTACH     (-2)
-#define CACHE_OP_IMPORT     (-3)
+//#define TBM_BUFMGR_INIT_TIME
+
+#define PREFIX_LIB    "libtbm_"
+#define SUFFIX_LIB    ".so"
+#define DEFAULT_LIB   PREFIX_LIB"default"SUFFIX_LIB
 
 /* values to indicate unspecified fields in XF86ModReqInfo. */
 #define MAJOR_UNSPEC        0xFF
@@ -69,1430 +72,1696 @@ int bDebug = 0;
 #define ABI_VERS_UNSPEC   0xFFFFFFFF
 
 #define MODULE_VERSION_NUMERIC(maj, min, patch) \
-               ((((maj) & 0xFF) << 24) | (((min) & 0xFF) << 16) | (patch & 0xFFFF))
+                       ((((maj) & 0xFF) << 24) | (((min) & 0xFF) << 16) | (patch & 0xFFFF))
 #define GET_MODULE_MAJOR_VERSION(vers)    (((vers) >> 24) & 0xFF)
 #define GET_MODULE_MINOR_VERSION(vers)    (((vers) >> 16) & 0xFF)
 #define GET_MODULE_PATCHLEVEL(vers)    ((vers) & 0xFFFF)
 
-enum {
-    LOCK_TRY_ONCE,
-    LOCK_TRY_ALWAYS,
-    LOCK_TRY_NEVER
-};
+/* check condition */
+#define TBM_BUFMGR_RETURN_IF_FAIL(cond) {\
+       if (!(cond)) {\
+               TBM_LOG_E("'%s' failed.\n", #cond);\
+               _tbm_bufmgr_mutex_unlock();\
+               return;\
+       } \
+}
+
+#define TBM_BUFMGR_RETURN_VAL_IF_FAIL(cond, val) {\
+       if (!(cond)) {\
+               TBM_LOG_E("'%s' failed.\n", #cond);\
+               _tbm_bufmgr_mutex_unlock();\
+               return val;\
+       } \
+}
 
 enum {
-    DEVICE_NONE = 0,
-    DEVICE_CA,       /* cache aware device */
-    DEVICE_CO        /* cache oblivious device */
+       LOCK_TRY_ONCE,
+       LOCK_TRY_ALWAYS,
+       LOCK_TRY_NEVER
 };
 
-typedef struct
+static void
+_tbm_set_last_result(tbm_error_e err)
 {
-    unsigned long key;
-    void *data;
-    tbm_data_free free_func ;
+       tbm_last_error = err;
+}
 
-    /* link of user_data */
-    struct list_head item_link;
-} tbm_user_data;
+/* LCOV_EXCL_START */
+static bool
+_tbm_bufmgr_mutex_init(void)
+{
+       static bool tbm_bufmgr_mutex_init = false;
 
-pthread_mutex_t gLock = PTHREAD_MUTEX_INITIALIZER;
-tbm_bufmgr gBufMgr = NULL;
+       if (tbm_bufmgr_mutex_init)
+               return true;
 
-static inline int
-_tgl_init (int fd, unsigned int key)
-{
-    struct tgl_attribute attr;
-    int err;
-
-    attr.key = key;
-    attr.timeout_ms = 1000;
-
-    err = ioctl (fd, TGL_IOC_INIT_LOCK, &attr);
-    if (err)
-    {
-        TBM_LOG ( "[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    return 1;
-}
+       if (pthread_mutex_init(&tbm_bufmgr_lock, NULL)) {
+               TBM_LOG_E("fail: Cannot pthread_mutex_init for tbm_bufmgr_lock.\n");
+               return false;
+       }
 
-static inline int
-_tgl_destroy (int fd, unsigned int key)
-{
-    int err;
-    err = ioctl (fd, TGL_IOC_DESTROY_LOCK, key);
-    if (err)
-    {
-        TBM_LOG ( "[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    return 1;
-}
+       tbm_bufmgr_mutex_init = true;
 
-static inline int
-_tgl_lock (int fd, unsigned int key)
-{
-    int err;
-    err = ioctl (fd, TGL_IOC_LOCK_LOCK, key);
-    if (err)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    return 1;
+       return true;
 }
 
-static inline int
-_tgl_unlock (int fd, unsigned int key)
+static void
+_tbm_bufmgr_mutex_lock(void)
 {
-    int err;
-    err = ioctl (fd, TGL_IOC_UNLOCK_LOCK, key);
-    if (err)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    return 1;
-}
+       if (!_tbm_bufmgr_mutex_init()) {
+               TBM_LOG_E("fail: _tbm_bufmgr_mutex_init()\n");
+               return;
+       }
 
-static inline int
-_tgl_set_data (int fd, unsigned int key, unsigned int val)
-{
-    int err;
-    struct tgl_user_data arg;
-
-    arg.key = key;
-    arg.data1 = val;
-    err = ioctl (fd, TGL_IOC_SET_DATA, &arg);
-    if (err)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    return 1;
+       pthread_mutex_lock(&tbm_bufmgr_lock);
 }
 
-static inline unsigned int
-_tgl_get_data (int fd, unsigned int key, unsigned int *locked)
+static void
+_tbm_bufmgr_mutex_unlock(void)
 {
-    int err;
-    struct tgl_user_data arg = {0,};
-
-    arg.key = key;
-    err = ioctl (fd, TGL_IOC_GET_DATA, &arg);
-    if (err)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error(%s) %s:%d key:%d\n",
-                getpid(), strerror(errno), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
-
-    if (locked)
-        *locked = arg.locked;
-
-    return arg.data1;
+       pthread_mutex_unlock(&tbm_bufmgr_lock);
 }
 
-static tbm_user_data *
-_user_data_lookup (struct list_head *user_data_list, unsigned long key)
+static char *
+_tbm_flag_to_str(int f)
 {
-    tbm_user_data *user_data = NULL;
-    tbm_user_data *old_data = NULL, *tmp = NULL;
-
-    if (!LIST_IS_EMPTY (user_data_list))
-    {
-        LIST_FOR_EACH_ENTRY_SAFE (old_data, tmp, user_data_list, item_link)
-        {
-            if (old_data->key == key)
-            {
-                user_data = old_data;
-                return user_data;
-            }
-        }
-    }
-
-    return user_data;
-}
+       static char str[255];
 
-static tbm_user_data *
-_user_data_create (unsigned long key, tbm_data_free data_free_func)
-{
-    tbm_user_data * user_data = NULL;
+       if (f == TBM_BO_DEFAULT)
+                snprintf(str, 255, "DEFAULT");
+       else {
+               int c = 0;
+
+               if (f & TBM_BO_SCANOUT)
+                       c = snprintf(&str[c], 255, "SCANOUT");
 
-    user_data = calloc (1, sizeof (tbm_user_data));
-    if (!user_data)
-        return NULL;
+               if (f & TBM_BO_NONCACHABLE) {
+                       if (c)
+                               c = snprintf(&str[c], 255, ", ");
+                       c = snprintf(&str[c], 255, "NONCACHABLE,");
+               }
 
-    user_data->key = key;
-    user_data->free_func = data_free_func;
-    user_data->data = (void *)0;
+               if (f & TBM_BO_WC) {
+                       if (c)
+                               c = snprintf(&str[c], 255, ", ");
+                       c = snprintf(&str[c], 255, "WC");
+               }
+       }
 
-    return user_data;
+       return str;
 }
 
 static void
-_user_data_delete (tbm_user_data *user_data)
+_tbm_util_check_bo_cnt(tbm_bufmgr bufmgr)
 {
-    if (user_data->data && user_data->free_func)
-        user_data->free_func(user_data->data);
+       static int last_chk_bo_cnt = 0;
 
-    LIST_DEL (&user_data->item_link);
+       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);
 
-    free(user_data);
+               tbm_bufmgr_debug_show(bufmgr);
+
+               last_chk_bo_cnt = bufmgr->bo_cnt;
+       }
 }
 
 static int
-_bo_lock (tbm_bo bo, int device, int opt)
+_tbm_util_get_max_surface_size(int *w, int *h)
 {
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    int ret = 0;
-
-    if (TBM_LOCK_CTRL_BACKEND_VALID(bufmgr->backend->flags))
-    {
-        if (bufmgr->backend->bo_lock2)
-        {
-            /* use bo_lock2 backend lock */
-            ret = bufmgr->backend->bo_lock2 (bo, device, opt);
-        }
-        else if (bufmgr->backend->bo_lock)
-        {
-            /* use bo_lock backend lock */
-            ret = bufmgr->backend->bo_lock (bo);
-        }
-        else
-            TBM_LOG ("[libtbm:%d] "
-                "error %s:%d no backend lock functions\n",
-                getpid(), __FUNCTION__, __LINE__);
-    }
-    else
-    {
-        /* use tizen global lock */
-        ret = _tgl_lock (bufmgr->lock_fd, bo->tgl_key);
-    }
-
-    return ret;
+       tbm_surface_info_s info;
+       tbm_surface_h surface = NULL;
+       int count = 0;
+
+       *w = 0;
+       *h = 0;
+
+       if (gBufMgr == NULL || LIST_IS_EMPTY(&gBufMgr->surf_list))
+               return count;
+
+       LIST_FOR_EACH_ENTRY(surface, &gBufMgr->surf_list, item_link) {
+               if (tbm_surface_get_info(surface, &info) == TBM_SURFACE_ERROR_NONE) {
+                       count++;
+                       if (*w < info.width)
+                               *w = info.width;
+                       if (*h < info.height)
+                               *h = info.height;
+               }
+       }
+
+       return count;
 }
 
 static void
-_bo_unlock (tbm_bo bo)
+_tbm_util_get_appname_brief(char *brief)
 {
-    tbm_bufmgr bufmgr = bo->bufmgr;
-
-    if (TBM_LOCK_CTRL_BACKEND_VALID(bufmgr->backend->flags))
-    {
-        if (bufmgr->backend->bo_unlock)
-        {
-            /* use backend unlock */
-            bufmgr->backend->bo_unlock (bo);
-        }
-        else
-            TBM_LOG ("[libtbm:%d] "
-                "error %s:%d no backend unlock functions\n",
-                getpid(), __FUNCTION__, __LINE__);
-    }
-    else
-    {
-        /* use tizen global unlock */
-        _tgl_unlock (bufmgr->lock_fd, bo->tgl_key);
-    }
-}
+       char delim[] = "/";
+       char *token = NULL;
+       char temp[255] = {0,};
+       char *saveptr = NULL;
 
-static int
-_tbm_bo_init_state (tbm_bo bo, int opt)
-{
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    tbm_bo_cache_state cache_state;
-
-    RETURN_VAL_CHECK_FLAG (TBM_ALL_CTRL_BACKEND_VALID(bufmgr->backend->flags), 1);
-
-    cache_state.val = 0;
-    switch (opt)
-    {
-    case CACHE_OP_CREATE:    /*Create*/
-        if (bo->tgl_key == INITIAL_KEY)
-           bo->tgl_key = bufmgr->backend->bo_get_global_key (bo);
-
-        _tgl_init (bufmgr->lock_fd, bo->tgl_key);
-
-        cache_state.data.isCacheable = BO_IS_CACHEABLE(bo);
-        cache_state.data.isDirtied = DEVICE_NONE;
-        cache_state.data.isCached = 0;
-        cache_state.data.cntFlush = 0;
-
-        _tgl_set_data (bufmgr->lock_fd, bo->tgl_key, cache_state.val);
-        break;
-    case CACHE_OP_IMPORT:    /*Import*/
-        if (bo->tgl_key == INITIAL_KEY)
-           bo->tgl_key = bufmgr->backend->bo_get_global_key (bo);
-
-        _tgl_init (bufmgr->lock_fd, bo->tgl_key);
-        break;
-    default:
-        break;
-    }
-
-    return 1;
+       token = strtok_r(brief, delim, &saveptr);
+
+       while (token != NULL) {
+               memset(temp, 0x00, 255 * sizeof(char));
+               strncpy(temp, token, 254 * sizeof(char));
+               token = strtok_r(NULL, delim, &saveptr);
+       }
+
+       snprintf(brief, sizeof(temp), "%s", temp);
 }
 
 static void
-_tbm_bo_destroy_state (tbm_bo bo)
+_tbm_util_get_appname_from_pid(long pid, char *str)
 {
-    tbm_bufmgr bufmgr = bo->bufmgr;
+       char fn_cmdline[255] = {0, }, cmdline[255];
+       FILE *fp;
+       int len;
+
+       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);
+               return;
+       }
+
+       if (!fgets(cmdline, 255, fp)) {
+               TBM_LOG_E("fail to get appname for pid(%ld)\n", pid);
+               fclose(fp);
+               return;
+       }
 
-    RETURN_CHECK_FLAG (TBM_ALL_CTRL_BACKEND_VALID(bufmgr->backend->flags));
+       fclose(fp);
 
-    _tgl_destroy (bufmgr->lock_fd, bo->tgl_key);
+       len = strlen(cmdline);
+       if (len < 1)
+               memset(cmdline, 0x00, 255);
+       else
+               cmdline[len] = 0;
+
+       snprintf(str, sizeof(cmdline), "%s", cmdline);
 }
+/* LCOV_EXCL_STOP */
 
-static int
-_tbm_bo_set_state (tbm_bo bo, int device, int opt)
+tbm_user_data
+*user_data_lookup(struct list_head *user_data_list, unsigned long key)
 {
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    char need_flush = 0;
-    unsigned short cntFlush = 0;
-    unsigned int is_locked;
-
-    RETURN_VAL_CHECK_FLAG (TBM_CACHE_CTRL_BACKEND_VALID(bufmgr->backend->flags), 1);
-
-    /* get cache state of a bo */
-    bo->cache_state.val = _tgl_get_data (bufmgr->lock_fd, bo->tgl_key, &is_locked);
-
-    if (!bo->cache_state.data.isCacheable)
-        return 1;
-
-    /* get global cache flush count */
-    cntFlush = (unsigned short)_tgl_get_data (bufmgr->lock_fd, GLOBAL_KEY, NULL);
-
-    if (DEVICE_IS_CACHE_AWARE (device))
-    {
-        if (bo->cache_state.data.isDirtied == DEVICE_CO &&
-            bo->cache_state.data.isCached)
-        {
-            need_flush = TBM_CACHE_INV;
-        }
-
-        bo->cache_state.data.isCached = 1;
-        if (opt & TBM_OPTION_WRITE)
-            bo->cache_state.data.isDirtied = DEVICE_CA;
-        else
-        {
-            if( bo->cache_state.data.isDirtied != DEVICE_CA )
-                bo->cache_state.data.isDirtied = DEVICE_NONE;
-        }
-    }
-    else
-    {
-        if (bo->cache_state.data.isDirtied == DEVICE_CA &&
-            bo->cache_state.data.isCached &&
-            bo->cache_state.data.cntFlush == cntFlush)
-        {
-            need_flush = TBM_CACHE_CLN | TBM_CACHE_ALL;
-        }
-
-        if (opt & TBM_OPTION_WRITE)
-            bo->cache_state.data.isDirtied = DEVICE_CO;
-        else
-        {
-            if( bo->cache_state.data.isDirtied != DEVICE_CO )
-                bo->cache_state.data.isDirtied = DEVICE_NONE;
-        }
-    }
-
-    if (need_flush)
-    {
-        /* set global cache flush count */
-        if (need_flush & TBM_CACHE_ALL)
-            _tgl_set_data (bufmgr->lock_fd, GLOBAL_KEY, (unsigned int)(++cntFlush));
-
-        /* call backend cache flush */
-        bufmgr->backend->bo_cache_flush (bo, need_flush);
-
-        DBG ("[libtbm:%d] \tcache(%d,%d,%d)....flush:0x%x, cntFlush(%d)\n", getpid(),
-             bo->cache_state.data.isCacheable,
-             bo->cache_state.data.isCached,
-             bo->cache_state.data.isDirtied,
-             need_flush, cntFlush);
-    }
-
-    return 1;
+       tbm_user_data *old_data = NULL;
+
+       if (LIST_IS_EMPTY(user_data_list))
+               return NULL;
+
+       LIST_FOR_EACH_ENTRY(old_data, user_data_list, item_link) {
+               if (old_data->key == key)
+                       return old_data;
+       }
+
+       return NULL;
 }
 
-static void
-_tbm_bo_save_state (tbm_bo bo)
+tbm_user_data
+*user_data_create(unsigned long key, tbm_data_free data_free_func)
 {
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    unsigned short cntFlush = 0;
+       tbm_user_data *user_data;
 
-    RETURN_CHECK_FLAG (TBM_CACHE_CTRL_BACKEND_VALID(bufmgr->backend->flags));
+       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 */
+       }
 
-    /* get global cache flush count */
-    cntFlush = (unsigned short)_tgl_get_data (bufmgr->lock_fd, GLOBAL_KEY, NULL);
+       user_data->key = key;
+       user_data->free_func = data_free_func;
 
-    /* save global cache flush count */
-    bo->cache_state.data.cntFlush = cntFlush;
-    _tgl_set_data(bufmgr->lock_fd, bo->tgl_key, bo->cache_state.val);
+       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);
+}
 
 static int
-_tbm_bo_lock (tbm_bo bo, int device, int opt)
+_bo_lock(tbm_bo bo, int device, int opt)
 {
-    tbm_bufmgr bufmgr = NULL;
-    int old;
-    int ret = 0;
-
-    if (!bo)
-        return 0;
-
-    bufmgr = bo->bufmgr;
-
-    /* do not try to lock the bo */
-    if (bufmgr->lock_type == LOCK_TRY_NEVER)
-        return 1;
-
-    if (bo->lock_cnt < 0)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error %s:%d bo:%p(%d) LOCK_CNT=%d\n",
-                getpid(), __FUNCTION__, __LINE__, bo, bo->tgl_key, bo->lock_cnt);
-    }
-
-    old = bo->lock_cnt;
-    if (bufmgr->lock_type == LOCK_TRY_ONCE)
-    {
-        if (bo->lock_cnt == 0)
-        {
-            pthread_mutex_unlock (&bufmgr->lock);
-            ret = _bo_lock (bo, device, opt);
-            pthread_mutex_lock (&bufmgr->lock);
-            if (ret)
-                bo->lock_cnt++;
-        }
-    }
-    else if (bufmgr->lock_type == LOCK_TRY_ALWAYS)
-    {
-        pthread_mutex_unlock (&bufmgr->lock);
-        ret = _bo_lock (bo, device, opt);
-        pthread_mutex_lock (&bufmgr->lock);
-        if(ret)
-            bo->lock_cnt++;
-    }
-    else
-        TBM_LOG ("[libtbm:%d] "
-                "error %s:%d bo:%p lock_type is wrong.\n",
-                getpid(), __FUNCTION__, __LINE__, bo);
-
-    DBG_LOCK ("[libtbm:%d] >> LOCK bo:%p(%d, %d->%d)\n", getpid(),
-            bo, bo->tgl_key, old, bo->lock_cnt);
-
-    return ret;
+       tbm_bufmgr bufmgr = bo->bufmgr;
+       int ret = 1;
+
+       if (bufmgr->backend->bo_lock)
+               ret = bufmgr->backend->bo_lock(bo, device, opt);
+
+       return ret;
 }
 
 static void
-_tbm_bo_unlock (tbm_bo bo)
+_bo_unlock(tbm_bo bo)
 {
-    tbm_bufmgr bufmgr = NULL;
-
-    int old;
-
-    if (!bo)
-        return;
-
-    bufmgr = bo->bufmgr;
-
-    /* do not try to unlock the bo */
-    if (bufmgr->lock_type == LOCK_TRY_NEVER)
-        return;
-
-    old = bo->lock_cnt;
-    if (bufmgr->lock_type == LOCK_TRY_ONCE)
-    {
-        if (bo->lock_cnt > 0)
-        {
-            bo->lock_cnt--;
-            if (bo->lock_cnt == 0)
-               _bo_unlock (bo);
-        }
-    }
-    else if (bufmgr->lock_type == LOCK_TRY_ALWAYS)
-    {
-        if (bo->lock_cnt > 0)
-        {
-            bo->lock_cnt--;
-            _bo_unlock (bo);
-        }
-    }
-    else
-        TBM_LOG ("[libtbm:%d] "
-                "error %s:%d bo:%p lock_type is wrong.\n",
-                getpid(), __FUNCTION__, __LINE__, bo);
-
-    if (bo->lock_cnt < 0)
-        bo->lock_cnt = 0;
-
-    DBG_LOCK ("[libtbm:%d] << unlock bo:%p(%d, %d->%d)\n", getpid(),
-             bo, bo->tgl_key, old, bo->lock_cnt);
+       tbm_bufmgr bufmgr = bo->bufmgr;
+
+       if (bufmgr->backend->bo_unlock)
+               bufmgr->backend->bo_unlock(bo);
 }
 
 static int
-_tbm_bo_is_valid(tbm_bo bo)
+_tbm_bo_lock(tbm_bo bo, int device, int opt)
 {
-    tbm_bo old_data=NULL, tmp = NULL;;
-
-    if( bo == NULL )
-        return 0;
-
-    if(!LIST_IS_EMPTY (&gBufMgr->bo_list))
-    {
-               LIST_FOR_EACH_ENTRY_SAFE (old_data, tmp, &gBufMgr->bo_list, item_link)
-               {
-                       if(old_data == bo)
-                       {
-                               return 1;
-                       }
-               }
-
-    }
-    return 0;
+       tbm_bufmgr bufmgr;
+       int old, ret;
+
+       if (!bo)
+               return 0;
+
+       bufmgr = bo->bufmgr;
+
+       /* do not try to lock the bo */
+       if (bufmgr->lock_type == LOCK_TRY_NEVER)
+               return 1;
+
+       if (bo->lock_cnt < 0) {
+               TBM_LOG_E("error bo:%p LOCK_CNT=%d\n",
+                       bo, bo->lock_cnt);
+               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;
+       }
+
+       TBM_DBG_LOCK(">> LOCK bo:%p(%d->%d)\n", bo, old, bo->lock_cnt);
+
+       return ret;
 }
 
 static void
-_tbm_bo_ref (tbm_bo bo)
+_tbm_bo_unlock(tbm_bo bo)
 {
-    bo->ref_cnt++;
-}
+       tbm_bufmgr bufmgr;
+       int old;
 
-static void
-_tbm_bo_unref (tbm_bo bo)
-{
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    tbm_user_data *old_data = NULL, *tmp = NULL;
-
-    if (bo->ref_cnt <= 0)
-        return;
-
-    bo->ref_cnt--;
-    if (bo->ref_cnt == 0)
-    {
-        /* destory the user_data_list */
-        if (!LIST_IS_EMPTY (&bo->user_data_list))
-        {
-            LIST_FOR_EACH_ENTRY_SAFE (old_data, tmp, &bo->user_data_list, item_link)
-            {
-                DBG ("[libtbm:%d] free user_data \n", getpid());
-                _user_data_delete (old_data);
-            }
-        }
-
-        if (bo->lock_cnt > 0)
-        {
-            TBM_LOG ("[libtbm:%d] "
-                    "error %s:%d lock_cnt:%d\n",
-                    getpid(), __FUNCTION__, __LINE__, bo->lock_cnt);
-            _bo_unlock (bo);
-        }
-
-        /* Destroy Global Lock */
-        _tbm_bo_destroy_state (bo);
-
-        /* call the bo_free */
-        bufmgr->backend->bo_free (bo);
-        bo->priv = NULL;
-
-        LIST_DEL (&bo->item_link);
-        free(bo);
-        bo = NULL;
-    }
+       if (!bo)
+               return;
+
+       bufmgr = bo->bufmgr;
+
+       /* do not try to unlock the bo */
+       if (bufmgr->lock_type == LOCK_TRY_NEVER)
+               return;
+
+       old = bo->lock_cnt;
+
+       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 (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_bufmgr_init_state (tbm_bufmgr bufmgr)
+_tbm_bo_is_valid(tbm_bo bo)
 {
-    RETURN_VAL_CHECK_FLAG (TBM_ALL_CTRL_BACKEND_VALID(bufmgr->backend->flags), 1);
-
-    bufmgr->lock_fd = open (tgl_devfile, O_RDWR);
-
-    if(bufmgr->lock_fd < 0)
-    {
-        bufmgr->lock_fd = open (tgl_devfile1, O_RDWR);
-        if(bufmgr->lock_fd < 0)
-        {
-
-            TBM_LOG ("[libtbm:%d] "
-                    "error: Fail to open global_lock:%s\n",
-                    getpid(), tgl_devfile);
-            return 0;
-        }
-    }
-
-   if (!_tgl_init(bufmgr->lock_fd, GLOBAL_KEY))
-   {
-        TBM_LOG ("[libtbm:%d] "
-                "error: Fail to initialize the tgl\n",
-                getpid());
-        return 0;
-   }
-
-   return 1;
-}
+       tbm_bo old_data = NULL;
 
-static void
-_tbm_bufmgr_destroy_state (tbm_bufmgr bufmgr)
-{
-    RETURN_CHECK_FLAG (TBM_ALL_CTRL_BACKEND_VALID(bufmgr->backend->flags));
+       if (bo == NULL || gBufMgr == NULL) {
+               TBM_LOG_E("error: bo is NULL or tbm_bufmgr was deinited\n");
+               return 0;
+       }
+
+       if (LIST_IS_EMPTY(&gBufMgr->bo_list)) {
+               TBM_LOG_E("error: gBufMgr->bo_list is EMPTY.\n");
+               return 0;
+       }
+
+       LIST_FOR_EACH_ENTRY(old_data, &gBufMgr->bo_list, item_link) {
+               if (old_data == bo)
+                       return 1;
+       }
+
+       TBM_LOG_E("error: No valid bo(%p).\n", bo);
 
-    close (bufmgr->lock_fd);
+       return 0;
 }
 
+/* LCOV_EXCL_START */
 static int
-_check_version (TBMModuleVersionInfo *data)
+_check_version(TBMModuleVersionInfo *data)
 {
-    int abimaj, abimin;
-    int vermaj, vermin;
-
-    abimaj = GET_ABI_MAJOR (data->abiversion);
-    abimin = GET_ABI_MINOR (data->abiversion);
-
-    TBM_LOG ("[libtbm:%d] "
-            "TBM module %s: vendor=\"%s\" ABI=%d,%d\n",
-            getpid(), data->modname ? data->modname : "UNKNOWN!",
-            data->vendor ? data->vendor : "UNKNOWN!", abimaj, abimin);
-
-    vermaj = GET_ABI_MAJOR (TBM_ABI_VERSION);
-    vermin = GET_ABI_MINOR (TBM_ABI_VERSION);
-
-    DBG ("[libtbm:%d] " "TBM ABI version %d.%d\n", getpid(), vermaj, vermin);
-
-    if (abimaj != vermaj)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "TBM module ABI major ver(%d) doesn't match the TBM's ver(%d)\n",
-                getpid(), abimaj, vermaj);
-        return 0;
-    }
-    else if (abimin > vermin)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "TBM module ABI minor ver(%d) is newer than the TBM's ver(%d)\n",
-                getpid(), abimin, vermin);
-        return 0;
-    }
-    return 1;
+       int abimaj, abimin;
+       int vermaj, vermin;
+
+       abimaj = GET_ABI_MAJOR(data->abiversion);
+       abimin = 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);
+
+       vermaj = GET_ABI_MAJOR(TBM_ABI_VERSION);
+       vermin = GET_ABI_MINOR(TBM_ABI_VERSION);
+
+       TBM_DBG("TBM ABI version %d.%d\n",
+           vermaj, vermin);
+
+       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;
+       }
+
+       return 1;
 }
 
 static int
-_tbm_bufmgr_load_module (tbm_bufmgr bufmgr, int fd, const char *file)
+_tbm_bufmgr_load_module(tbm_bufmgr bufmgr, int fd, const char *file)
 {
-    char path[PATH_MAX] = {0,};
-    TBMModuleData *initdata = NULL;
-    void * module_data;
-
-    snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
-
-    module_data = dlopen (path, RTLD_LAZY);
-    if (!module_data)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "failed to load module: %s(%s)\n",
-                getpid(), dlerror(), file);
-        return 0;
-    }
-
-    initdata = dlsym (module_data, "tbmModuleData");
-    if (initdata)
-    {
-        ModuleInitProc init;
-        TBMModuleVersionInfo *vers;
-
-        vers = initdata->vers;
-        init = initdata->init;
-
-        if (vers)
-        {
-            if (!_check_version (vers))
-            {
-                dlclose (module_data);
-                return 0;
-            }
-        }
-        else
-        {
-            TBM_LOG ("[libtbm:%d] "
-                    "Error: module does not supply version information.\n",
-                    getpid());
-
-            dlclose (module_data);
-            return 0;
-        }
-
-        if (init)
-        {
-            if(!init (bufmgr, fd))
-            {
-                TBM_LOG ("[libtbm:%d] "
-                        "Fail to init module(%s)\n",
-                        getpid(), file);
-                dlclose (module_data);
-                return 0;
-            }
-
-            if (!bufmgr->backend || !bufmgr->backend->priv)
-            {
-                TBM_LOG ("[libtbm:%d] "
-                        "Error: module(%s) wrong operation. Check backend or backend's priv.\n",
-                        getpid(), file);
-                dlclose (module_data);
-                return 0;
-            }
-        }
-        else
-        {
-            TBM_LOG ("[libtbm:%d] "
-                    "Error: module does not supply init symbol.\n", getpid());
-            dlclose (module_data);
-            return 0;
-        }
-    }
-    else
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "Error: module does not have data object.\n", getpid());
-        dlclose (module_data);
-        return 0;
-    }
-
-    bufmgr->module_data = module_data;
-
-    TBM_LOG ("[libtbm:%d] "
-            "Success to load module(%s)\n", getpid(), file);
-
-    return 1;
+       char path[PATH_MAX] = {0, };
+       TBMModuleVersionInfo *vers;
+       TBMModuleData *initdata;
+       ModuleInitProc init;
+       void *module_data;
+
+       snprintf(path, sizeof(path), BUFMGR_MODULE_DIR "/%s", file);
+
+       module_data = dlopen(path, RTLD_LAZY);
+       if (!module_data) {
+               TBM_LOG_E("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");
+               goto err;
+       }
+
+       vers = initdata->vers;
+       if (!vers) {
+               TBM_LOG_E("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");
+               goto err;
+       }
+
+       if (!_check_version(vers)) {
+               TBM_LOG_E("Fail to check version.\n");
+               goto err;
+       }
+
+       if (!init(bufmgr, fd)) {
+               TBM_LOG_E("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);
+               goto err;
+       }
+
+       bufmgr->module_data = module_data;
+
+       TBM_DBG("Success to load module(%s)\n", file);
+
+       return 1;
+
+err:
+       dlclose(module_data);
+       return 0;
 }
 
-static int _tbm_load_module (tbm_bufmgr bufmgr, int fd)
+static int
+_tbm_load_module(tbm_bufmgr bufmgr, int fd)
 {
-    struct dirent **namelist;
-    const char *p = NULL;
-    int n;
-    int ret = 0;
-
-    /* load bufmgr priv from default lib */
-    ret = _tbm_bufmgr_load_module (bufmgr, fd, DEFAULT_LIB);
-
-    /* load bufmgr priv from configured path */
-    if (!ret)
-    {
-        n = scandir (BUFMGR_MODULE_DIR, &namelist, 0, alphasort);
-        if (n < 0)
-            TBM_LOG ("[libtbm:%d] "
-                    "no files : %s\n", getpid(), BUFMGR_MODULE_DIR);
-        else
-        {
-            while(n--)
-            {
-                if (!ret && strstr (namelist[n]->d_name, PREFIX_LIB))
-                {
-                    p = strstr (namelist[n]->d_name, SUFFIX_LIB);
-                    if (p != NULL)
-                    {
-                        if (!strcmp (p, SUFFIX_LIB))
-                        {
-                            ret = _tbm_bufmgr_load_module (bufmgr, fd, namelist[n]->d_name);
-                        }
-                    }
-                }
-                free(namelist[n]);
-            }
-            free(namelist);
-        }
-    }
-
-    return ret;
+       struct dirent **namelist;
+       int ret = 0, n;
+
+       /* load bufmgr priv from default lib */
+       if (_tbm_bufmgr_load_module(bufmgr, fd, DEFAULT_LIB))
+               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);
+               return 0;
+       }
+
+       while (n--) {
+               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);
+               }
+
+               free(namelist[n]);
+       }
+
+       free(namelist);
+
+       return ret;
 }
+/* LCOV_EXCL_STOP */
 
 tbm_bufmgr
-tbm_bufmgr_init (int fd)
+tbm_bufmgr_init(int fd)
 {
-    char *env;
-    int fd_flag = 0;
+#ifdef TBM_BUFMGR_INIT_TIME
+       struct timeval start_tv, end_tv;
+#endif
+       char *env;
 
-    pthread_mutex_lock (&gLock);
+#ifdef TBM_BUFMGR_INIT_TIME
+       /* get the start tv */
+       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("GEM_DEBUG");
-    if(env)
-    {
-        bDebug = atoi(env);
-        TBM_LOG ("GEM_DEBUG=%s\n", env);
-    }
-    else
-        bDebug = 0;
+       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
 
-    /* initialize buffer manager */
-    if (gBufMgr)
-    {
-        TBM_LOG ("[libtbm:%d] use previous gBufMgr\n", getpid());
-        gBufMgr->ref_count++;
-        TBM_LOG ("[libtbm:%d] bufmgr ref: fd=%d, ref_count:%d\n",
-                    getpid(), gBufMgr->fd, gBufMgr->ref_count);
-        pthread_mutex_unlock (&gLock);
-        return gBufMgr;
-    }
-
-    if (fd < 0)
-    {
-#ifdef HAVE_X11
-        fd = tbm_bufmgr_get_drm_fd_x11();
-#elif HAVE_WAYLAND
-        fd = tbm_bufmgr_get_drm_fd_wayland();
+       pthread_mutex_lock(&gLock);
+
+       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");
+       }
+
+
+       /* 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);
+               pthread_mutex_unlock(&gLock);
+               return gBufMgr;
+       }
+
+       TBM_DBG("bufmgr init\n");
+
+       /* 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);
+               pthread_mutex_unlock(&gLock);
+               return NULL;
+       }
+
+       gBufMgr->fd = fd;
+
+       /* load bufmgr priv from env */
+       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");
+               free(gBufMgr);
+               gBufMgr = NULL;
+               pthread_mutex_unlock(&gLock);
+               return NULL;
+
+       }
+       /* 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",
+           gBufMgr, gBufMgr->ref_count);
+
+       /* setup the lock_type */
+       env = getenv("BUFMGR_LOCK_TYPE");
+       if (env && !strcmp(env, "always"))
+               gBufMgr->lock_type = LOCK_TRY_ALWAYS;
+       else if (env && !strcmp(env, "none"))
+               gBufMgr->lock_type = LOCK_TRY_NEVER;
+       else if (env && !strcmp(env, "once"))
+               gBufMgr->lock_type = LOCK_TRY_ONCE;
+       else
+               gBufMgr->lock_type = LOCK_TRY_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);
+
+       /* intialize surf_list */
+       LIST_INITHEAD(&gBufMgr->surf_list);
+
+       /* intialize surf_queue_list */
+       LIST_INITHEAD(&gBufMgr->surf_queue_list);
+
+       /* intialize debug_key_list */
+       LIST_INITHEAD(&gBufMgr->debug_key_list);
+
+#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)));
 #endif
-        if (fd < 0)
-        {
-            TBM_LOG ("[libtbm:%d] Fail get drm fd\n", getpid());
-            pthread_mutex_unlock (&gLock);
-            return NULL;
-        }
-        fd_flag = 1;
-    }
-
-    TBM_LOG ("[libtbm:%d] bufmgr init: fd=%d\n", getpid(), fd);
-
-    /* allocate bufmgr */
-    gBufMgr = calloc (1, sizeof(struct _tbm_bufmgr));
-    if (!gBufMgr)
-    {
-        pthread_mutex_unlock (&gLock);
-        return NULL;
-    }
-
-    /* load bufmgr priv from env */
-    if (!_tbm_load_module(gBufMgr, fd))
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error : Fail to load bufmgr backend\n",
-                getpid());
-        free (gBufMgr);
-        gBufMgr = NULL;
-        pthread_mutex_unlock (&gLock);
-        return NULL;
-    }
-
-    gBufMgr->fd_flag = fd_flag;
-    gBufMgr->fd = fd;
-    gBufMgr->ref_count = 1;
-
-    TBM_LOG ("[libtbm:%d] create tizen bufmgr: ref_count:%d\n", getpid(), gBufMgr->ref_count);
-
-    if (pthread_mutex_init (&gBufMgr->lock, NULL) != 0)
-    {
-        gBufMgr->backend->bufmgr_deinit (gBufMgr->backend->priv);
-        tbm_backend_free (gBufMgr->backend);
-        dlclose (gBufMgr->module_data);
-        free (gBufMgr);
-        gBufMgr = NULL;
-        pthread_mutex_unlock (&gLock);
-        return NULL;
-    }
-
-    /* intialize the tizen global status */
-    if (!_tbm_bufmgr_init_state (gBufMgr))
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "error: Fail to init state\n",
-                getpid());
-        gBufMgr->backend->bufmgr_deinit (gBufMgr->backend->priv);
-        tbm_backend_free (gBufMgr->backend);
-        pthread_mutex_destroy (&gBufMgr->lock);
-        dlclose (gBufMgr->module_data);
-        free (gBufMgr);
-        gBufMgr = NULL;
-        pthread_mutex_unlock (&gLock);
-        return NULL;
-    }
-
-    /* setup the lock_type */
-    env = getenv ("BUFMGR_LOCK_TYPE");
-    if (env && !strcmp (env, "always"))
-        gBufMgr->lock_type = LOCK_TRY_ALWAYS;
-    else if(env && !strcmp(env, "none"))
-        gBufMgr->lock_type = LOCK_TRY_NEVER;
-    else if(env && !strcmp(env, "once"))
-         gBufMgr->lock_type = LOCK_TRY_ONCE;
-    else
-        gBufMgr->lock_type = LOCK_TRY_ALWAYS;
-
-    DBG ("[libtbm:%d] BUFMGR_LOCK_TYPE=%s\n", getpid(), env?env:"default:once");
-
-    /* setup the map_cache */
-    env = getenv ("BUFMGR_MAP_CACHE");
-    if (env && !strcmp (env, "false"))
-        gBufMgr->use_map_cache = 0;
-    else
-        gBufMgr->use_map_cache = 1;
-    DBG ("[libtbm:%d] BUFMGR_MAP_CACHE=%s\n", getpid(), env?env:"default:true");
-
-    /* intialize bo_list */
-    LIST_INITHEAD (&gBufMgr->bo_list);
-
-    /* intialize surf_list */
-    LIST_INITHEAD (&gBufMgr->surf_list);
-
-    pthread_mutex_unlock (&gLock);
-    return gBufMgr;
+
+       pthread_mutex_unlock(&gLock);
+
+       return gBufMgr;
 }
 
 void
-tbm_bufmgr_deinit (tbm_bufmgr bufmgr)
+tbm_bufmgr_deinit(tbm_bufmgr bufmgr)
 {
-    TBM_RETURN_IF_FAIL (TBM_BUFMGR_IS_VALID(bufmgr));
-
-    tbm_bo bo = NULL;
-    tbm_bo tmp = NULL;
-
-    tbm_surface_h surf = NULL;
-    tbm_surface_h tmp_surf = NULL;
-
-    pthread_mutex_lock (&gLock);
-
-    bufmgr->ref_count--;
-    if (bufmgr->ref_count > 0)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                "tizen bufmgr destroy: bufmgr:%p, ref_count:%d\n",
-                getpid(), bufmgr, bufmgr->ref_count);
-        pthread_mutex_unlock (&gLock);
-        return;
-    }
-
-    /* destroy bo_list */
-    if(!LIST_IS_EMPTY (&bufmgr->bo_list))
-    {
-        LIST_FOR_EACH_ENTRY_SAFE (bo, tmp, &bufmgr->bo_list, item_link)
-        {
-            TBM_LOG ("[libtbm:%d] "
-                    "Un-freed bo(%p, ref:%d) \n",
-                    getpid(), bo, bo->ref_cnt);
-            bo->ref_cnt = 1;
-            tbm_bo_unref(bo);
-        }
-    }
-
-    /* destroy surf_list */
-    if(!LIST_IS_EMPTY (&bufmgr->surf_list))
-    {
-        LIST_FOR_EACH_ENTRY_SAFE (surf, tmp_surf, &bufmgr->surf_list, item_link)
-        {
-            TBM_LOG ("[libtbm:%d] "
-                    "Destroy surf(%p) \n",
-                    getpid(), surf);
-            tbm_surface_destroy(surf);
-        }
-    }
-
-    /* destroy the tizen global status */
-    _tbm_bufmgr_destroy_state (bufmgr);
-
-    /* destroy bufmgr priv */
-    bufmgr->backend->bufmgr_deinit (bufmgr->backend->priv);
-    bufmgr->backend->priv = NULL;
-    tbm_backend_free (bufmgr->backend);
-    bufmgr->backend = NULL;
-
-    pthread_mutex_destroy (&bufmgr->lock);
-
-    TBM_LOG ("[libtbm:%d] "
-            "tizen bufmgr destroy: bufmgr:%p\n",
-            getpid(), bufmgr);
-
-    dlclose (bufmgr->module_data);
-
-    if(bufmgr->fd_flag)
-        close(bufmgr->fd);
-
-    free (bufmgr);
-    bufmgr = NULL;
-    gBufMgr = NULL;
-
-    pthread_mutex_unlock (&gLock);
+       TBM_RETURN_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr));
+
+       pthread_mutex_lock(&gLock);
+
+       if (!gBufMgr) {
+               TBM_LOG_E("gBufmgr already destroy: bufmgr:%p\n", bufmgr);
+               pthread_mutex_unlock(&gLock);
+               return;
+       }
+
+       bufmgr->ref_count--;
+       if (bufmgr->ref_count > 0) {
+               TBM_TRACE("reduce a ref_count(%d) of tbm_bufmgr(%p)\n", bufmgr->ref_count, bufmgr);
+               pthread_mutex_unlock(&gLock);
+               return;
+       }
+
+       /* destroy bo_list */
+       if (!LIST_IS_EMPTY(&bufmgr->bo_list)) {
+               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);
+                       bo->ref_cnt = 1;
+                       tbm_bo_unref(bo);
+               }
+       }
+
+       /* destroy surf_list */
+       if (!LIST_IS_EMPTY(&bufmgr->surf_list)) {
+               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_surface_destroy(surf);
+               }
+       }
+
+       /* 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);
+
+       dlclose(bufmgr->module_data);
+
+       if (bufmgr->fd > 0)
+               close(bufmgr->fd);
+
+       free(bufmgr);
+       gBufMgr = NULL;
+
+       pthread_mutex_unlock(&gLock);
 }
 
 int
-tbm_bo_size (tbm_bo bo)
+tbm_bo_size(tbm_bo bo)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), 0);
+       tbm_bufmgr bufmgr = gBufMgr;
+       int size;
+
+       _tbm_bufmgr_mutex_lock();
 
-    tbm_bufmgr bufmgr = bo->bufmgr;
-    int size;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    pthread_mutex_lock(&bufmgr->lock);
+       size = bufmgr->backend->bo_size(bo);
 
-    size = bufmgr->backend->bo_size(bo);
+       TBM_TRACE("bo(%p) size(%d)\n", bo, size);
 
-    pthread_mutex_unlock(&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return size;
+       return size;
 }
 
 tbm_bo
-tbm_bo_ref (tbm_bo bo)
+tbm_bo_ref(tbm_bo bo)
 {
-    TBM_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), NULL);
+       _tbm_bufmgr_mutex_lock();
 
-    tbm_bufmgr bufmgr = bo->bufmgr;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), NULL);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), NULL);
 
-    pthread_mutex_lock(&bufmgr->lock);
+       bo->ref_cnt++;
 
-    _tbm_bo_ref (bo);
+       TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt);
 
-    pthread_mutex_unlock(&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return bo;
+       return bo;
 }
 
 void
-tbm_bo_unref (tbm_bo bo)
+tbm_bo_unref(tbm_bo bo)
 {
-    TBM_RETURN_IF_FAIL(_tbm_bo_is_valid(bo));
+       tbm_bufmgr bufmgr = gBufMgr;
 
-    tbm_bufmgr bufmgr = bo->bufmgr;
+       _tbm_bufmgr_mutex_lock();
 
-    pthread_mutex_lock (&bufmgr->lock);
+       TBM_BUFMGR_RETURN_IF_FAIL(gBufMgr);
+       TBM_BUFMGR_RETURN_IF_FAIL(_tbm_bo_is_valid(bo));
 
-    _tbm_bo_unref (bo);
+       TBM_TRACE("bo(%p) ref_cnt(%d)\n", bo, bo->ref_cnt - 1);
 
-    pthread_mutex_unlock(&bufmgr->lock);
+       if (bo->ref_cnt <= 0) {
+               _tbm_bufmgr_mutex_unlock();
+               return;
+       }
+
+       bo->ref_cnt--;
+       if (bo->ref_cnt == 0) {
+               /* 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);
+                       }
+               }
+
+               while (bo->lock_cnt > 0) {
+                       TBM_LOG_E("error lock_cnt:%d\n", bo->lock_cnt);
+                       _bo_unlock(bo);
+                       bo->lock_cnt--;
+               }
+
+               /* call the bo_free */
+               bufmgr->backend->bo_free(bo);
+               bo->priv = NULL;
+
+               LIST_DEL(&bo->item_link);
+               free(bo);
+
+               bufmgr->bo_cnt--;
+       }
+
+       _tbm_bufmgr_mutex_unlock();
 }
 
 tbm_bo
-tbm_bo_alloc (tbm_bufmgr bufmgr, int size, int flags)
+tbm_bo_alloc(tbm_bufmgr bufmgr, int size, int flags)
 {
-    TBM_RETURN_VAL_IF_FAIL (TBM_BUFMGR_IS_VALID(bufmgr) && (size > 0), NULL);
+       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);
 
-    tbm_bo bo = NULL;
-    void * bo_priv = 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();
+               return NULL;
+               /* LCOV_EXCL_STOP */
+       }
 
-    bo = calloc (1, sizeof(struct _tbm_bo));
-    if(!bo)
-        return NULL;
+       _tbm_util_check_bo_cnt(bufmgr);
 
-    bo->bufmgr = bufmgr;
+       bo->bufmgr = bufmgr;
 
-    pthread_mutex_lock (&bufmgr->lock);
+       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 */
+       }
 
-    bo_priv = bufmgr->backend->bo_alloc (bo, size, flags);
-    if (!bo_priv)
-    {
-        free (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       bufmgr->bo_cnt++;
 
-    bo->ref_cnt = 1;
-    bo->flags = flags;
-    bo->tgl_key = INITIAL_KEY;
-    bo->priv = bo_priv;
+       bo->ref_cnt = 1;
+       bo->flags = flags;
+       bo->priv = bo_priv;
 
-    /* init bo state */
-    if (!_tbm_bo_init_state (bo, CACHE_OP_CREATE))
-    {
-        _tbm_bo_unref (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       TBM_TRACE("bo(%p) size(%d) refcnt(%d), flag(%s)\n", bo, size, bo->ref_cnt,
+                       _tbm_flag_to_str(bo->flags));
 
-    LIST_INITHEAD (&bo->user_data_list);
+       LIST_INITHEAD(&bo->user_data_list);
 
-    LIST_ADD (&bo->item_link, &bufmgr->bo_list);
+       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
 
-    pthread_mutex_unlock(&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return bo;
+       return bo;
 }
 
 tbm_bo
-tbm_bo_import (tbm_bufmgr bufmgr, unsigned int key)
+tbm_bo_import(tbm_bufmgr bufmgr, unsigned int key)
 {
-    TBM_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
-
-    tbm_bo bo = NULL;
-    void * bo_priv = NULL;
-
-    bo = calloc (1, sizeof(struct _tbm_bo));
-    if(!bo)
-        return NULL;
-
-    bo->bufmgr = bufmgr;
+       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;
+                       }
+               }
+       }
 
-    pthread_mutex_lock (&bufmgr->lock);
+       bufmgr->bo_cnt++;
 
-    bo_priv = bufmgr->backend->bo_import (bo, key);
-    if (!bo_priv)
-    {
-        free (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       bo->ref_cnt = 1;
+       bo->priv = bo_priv;
 
-    bo->ref_cnt = 1;
-    bo->tgl_key = INITIAL_KEY;
-    bo->priv = bo_priv;
+       if (bufmgr->backend->bo_get_flags)
+               bo->flags = bufmgr->backend->bo_get_flags(bo);
+       else
+               bo->flags = TBM_BO_DEFAULT;
 
-    /* init bo state */
-    if (!_tbm_bo_init_state (bo, CACHE_OP_IMPORT))
-    {
-        _tbm_bo_unref (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       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_INITHEAD(&bo->user_data_list);
 
-    LIST_ADD (&bo->item_link, &bufmgr->bo_list);
+       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
 
-    pthread_mutex_unlock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return bo;
+       return bo;
 }
 
 tbm_bo
-tbm_bo_import_fd  (tbm_bufmgr bufmgr, tbm_fd fd)
+tbm_bo_import_fd(tbm_bufmgr bufmgr, tbm_fd fd)
 {
-    TBM_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr), NULL);
+       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;
+                       }
+               }
+       }
 
-    tbm_bo bo = NULL;
-    void * bo_priv = NULL;
+       bufmgr->bo_cnt++;
 
-    bo = calloc (1, sizeof(struct _tbm_bo));
-    if(!bo)
-        return NULL;
+       bo->ref_cnt = 1;
+       bo->priv = bo_priv;
 
-    bo->bufmgr = bufmgr;
+       if (bufmgr->backend->bo_get_flags)
+               bo->flags = bufmgr->backend->bo_get_flags(bo);
+       else
+               bo->flags = TBM_BO_DEFAULT;
 
-    pthread_mutex_lock (&bufmgr->lock);
+       TBM_TRACE("import bo(%p) ref(%d) fd(%d) flag(%s)\n",
+                       bo, bo->ref_cnt, fd, _tbm_flag_to_str(bo->flags));
 
-    bo_priv = bufmgr->backend->bo_import_fd(bo, fd);
-    if (!bo_priv)
-    {
-        free (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       LIST_INITHEAD(&bo->user_data_list);
 
-    bo->ref_cnt = 1;
-    bo->tgl_key = INITIAL_KEY;
-    bo->priv = bo_priv;
+       LIST_ADD(&bo->item_link, &bufmgr->bo_list);
 
-    /* init bo state */
-    if (!_tbm_bo_init_state (bo, CACHE_OP_IMPORT))
-    {
-        _tbm_bo_unref (bo);
-        pthread_mutex_unlock (&bufmgr->lock);
-        return NULL;
-    }
+       _tbm_bufmgr_mutex_unlock();
 
-    LIST_INITHEAD (&bo->user_data_list);
+       return bo;
+}
 
-    LIST_ADD (&bo->item_link, &bufmgr->bo_list);
+tbm_key
+tbm_bo_export(tbm_bo bo)
+{
+       tbm_bufmgr bufmgr = gBufMgr;
+       tbm_key ret;
 
-    pthread_mutex_unlock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_lock();
 
-    return bo;
-}
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-unsigned int
-tbm_bo_export (tbm_bo bo)
-{
-    TBM_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 */
+       }
 
-    tbm_bufmgr bufmgr;
-    int ret;
+       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 */
+       }
 
-    bufmgr = bo->bufmgr;
+       TBM_TRACE("bo(%p) tbm_key(%u)\n", bo, ret);
 
-    pthread_mutex_lock (&bufmgr->lock);
-    ret = bufmgr->backend->bo_export (bo);
-    pthread_mutex_unlock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return ret;
+       return ret;
 }
 
 tbm_fd
-tbm_bo_export_fd (tbm_bo bo)
+tbm_bo_export_fd(tbm_bo bo)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), 0);
+       tbm_bufmgr bufmgr = gBufMgr;
+       tbm_fd ret;
 
-    tbm_bufmgr bufmgr;
-    int ret;
+       _tbm_bufmgr_mutex_lock();
 
-    bufmgr = bo->bufmgr;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), -1);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), -1);
 
-    pthread_mutex_lock (&bufmgr->lock);
-    ret = bufmgr->backend->bo_export_fd (bo);
-    pthread_mutex_unlock (&bufmgr->lock);
+       if (!bufmgr->backend->bo_export_fd) {
+               /* LCOV_EXCL_START */
+               _tbm_bufmgr_mutex_unlock();
+               return -1;
+               /* LCOV_EXCL_STOP */
+       }
 
-    return ret;
-}
+       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_bo_get_handle(tbm_bo bo, int device)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), (tbm_bo_handle)0);
+       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);
 
-    tbm_bufmgr bufmgr;
-    tbm_bo_handle bo_handle;
+       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 */
+       }
 
-    bufmgr = bo->bufmgr;
+       TBM_TRACE("bo(%p) bo_handle(%p)\n", bo, bo_handle.ptr);
 
-    pthread_mutex_lock (&bufmgr->lock);
-    bo_handle = bufmgr->backend->bo_get_handle (bo, device);
-    pthread_mutex_unlock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return bo_handle;
+       return bo_handle;
 }
 
 tbm_bo_handle
-tbm_bo_map (tbm_bo bo, int device, int opt)
+tbm_bo_map(tbm_bo bo, int device, int opt)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), (tbm_bo_handle)0);
+       tbm_bufmgr bufmgr = gBufMgr;
+       tbm_bo_handle bo_handle;
 
-    tbm_bufmgr bufmgr;
-    tbm_bo_handle bo_handle;
+       _tbm_bufmgr_mutex_lock();
 
-    bufmgr = bo->bufmgr;
+       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);
 
-    pthread_mutex_lock (&bufmgr->lock);
+       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_get_handle (bo, device);
+       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 */
+       }
 
-    if (!_tbm_bo_lock (bo, device, opt))
-    {
-        TBM_LOG ("[libtbm:%d] "
-                        "error %s:%d fail to lock bo:%p)\n",
-                        getpid(), __FUNCTION__, __LINE__, bo);
-#ifdef HAVE_CAPI_0_1_1
-        set_last_result (TBM_ERROR_BO_LOCK_FAILED);
-#endif
-        pthread_mutex_unlock (&bufmgr->lock);
-        return (tbm_bo_handle)NULL;
-    }
-
-    bo_handle = bufmgr->backend->bo_map (bo, device, opt);
-    if (bo_handle.ptr == NULL)
-    {
-        TBM_LOG ("[libtbm:%d] "
-                        "error %s:%d fail to map bo:%p\n",
-                        getpid(), __FUNCTION__, __LINE__, bo);
-
-        _tbm_bo_unlock(bo);
-#ifdef HAVE_CAPI_0_1_1
-        set_last_result (TBM_ERROR_BO_MAP_FAILED);
-#endif
-        pthread_mutex_unlock (&bufmgr->lock);
-        return (tbm_bo_handle)NULL;
-    }
+       /* 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;
 
-    if (bufmgr->use_map_cache == 1 && bo->map_cnt == 0)
-        _tbm_bo_set_state (bo, device, opt);
+       _tbm_bufmgr_mutex_lock();
 
-    /* increase the map_count */
-    bo->map_cnt++;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    pthread_mutex_unlock (&bufmgr->lock);
+       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 */
+       }
 
-    return bo_handle;
+       /* 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_unmap (tbm_bo bo)
+tbm_bo_swap(tbm_bo bo1, tbm_bo bo2)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), 0);
+       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_bufmgr bufmgr;
-    int ret;
+       TBM_TRACE("after: bo1(%p) bo2(%p)\n", bo1, bo2);
 
-    bufmgr = bo->bufmgr;
+       temp = bo1->priv;
+       bo1->priv = bo2->priv;
+       bo2->priv = temp;
 
-    pthread_mutex_lock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    ret = bufmgr->backend->bo_unmap (bo);
-    if (!ret)
-    {
-        pthread_mutex_unlock (&bufmgr->lock);
-        return ret;
-    }
+       return 1;
+}
+
+int
+tbm_bo_locked(tbm_bo bo)
+{
+       tbm_bufmgr bufmgr = gBufMgr;
+
+       _tbm_bufmgr_mutex_lock();
 
-    /* decrease the map_count */
-    bo->map_cnt--;
+       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 (bo->map_cnt == 0)
-        _tbm_bo_save_state (bo);
+       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;
+       }
 
-     _tbm_bo_unlock (bo);
+       if (bo->lock_cnt > 0) {
+               TBM_TRACE("error: bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+               _tbm_bufmgr_mutex_unlock();
+               return 1;
+       }
 
-    pthread_mutex_unlock (&bufmgr->lock);
+       TBM_TRACE("bo(%p) lock_cnt(%d)\n", bo, bo->lock_cnt);
+       _tbm_bufmgr_mutex_unlock();
 
-    return ret;
+       return 0;
 }
 
 int
-tbm_bo_swap (tbm_bo bo1, tbm_bo bo2)
+tbm_bo_add_user_data(tbm_bo bo, unsigned long key,
+                    tbm_data_free data_free_func)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo1), 0);
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo2), 0);
+       tbm_user_data *data;
 
-    void* temp;
-    unsigned int tmp_key;
+       _tbm_bufmgr_mutex_lock();
 
-    if (bo1->bufmgr->backend->bo_size (bo1) != bo2->bufmgr->backend->bo_size (bo2))
-        return 0;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    pthread_mutex_lock (&bo1->bufmgr->lock);
+       /* 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;
+       }
 
-    tmp_key = bo1->tgl_key;
-    bo1->tgl_key = bo2->tgl_key;
-    bo2->tgl_key = tmp_key;
+       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;
+       }
 
-    temp = bo1->priv;
-    bo1->priv = bo2->priv;
-    bo2->priv = temp;
+       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, data->data);
 
-    pthread_mutex_unlock (&bo1->bufmgr->lock);
+       LIST_ADD(&data->item_link, &bo->user_data_list);
 
-    return 1;
+       _tbm_bufmgr_mutex_unlock();
+
+       return 1;
 }
 
 int
-tbm_bo_locked (tbm_bo bo)
+tbm_bo_set_user_data(tbm_bo bo, unsigned long key, void *data)
 {
-    TBM_RETURN_VAL_IF_FAIL (_tbm_bo_is_valid(bo), 0);
+       tbm_user_data *old_data;
+
+       _tbm_bufmgr_mutex_lock();
 
-    tbm_bufmgr bufmgr;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    bufmgr = bo->bufmgr;
+       if (LIST_IS_EMPTY(&bo->user_data_list)) {
+               TBM_TRACE("error: bo(%p) key(%lu)\n", bo, key);
+               _tbm_bufmgr_mutex_unlock();
+               return 0;
+       }
 
-    if (bufmgr->lock_type == LOCK_TRY_NEVER)
-        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;
+       }
 
-    pthread_mutex_lock (&bufmgr->lock);
+       if (old_data->data && old_data->free_func)
+               old_data->free_func(old_data->data);
+       old_data->data = data;
 
-    if (bo->lock_cnt > 0)
-    {
-        pthread_mutex_unlock (&bufmgr->lock);
-        return 1;
-    }
+       TBM_TRACE("bo(%p) key(%lu) data(%p)\n", bo, key, old_data->data);
 
-    pthread_mutex_unlock (&bufmgr->lock);
+       _tbm_bufmgr_mutex_unlock();
 
-    return 0;
+       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_add_user_data (tbm_bo bo, unsigned long key, tbm_data_free data_free_func)
+tbm_bo_delete_user_data(tbm_bo bo, unsigned long key)
 {
-    TBM_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
+       tbm_user_data *old_data;
 
-    tbm_user_data *data;
+       _tbm_bufmgr_mutex_lock();
 
-    /* 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_LOG ("[libtbm:%d] "
-                "waring: %s:%d user data already exist. key:%ld\n",
-                getpid(), __FUNCTION__, __LINE__, key);
-        return 0;
-    }
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    data = _user_data_create (key, data_free_func);
-    if (!data)
-        return 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;
+       }
 
-    LIST_ADD (&data->item_link, &bo->user_data_list);
+       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;
+       }
 
-    return 1;
+       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_set_user_data (tbm_bo bo, unsigned long key, void* data)
+tbm_bo_get_flags(tbm_bo bo)
 {
-    TBM_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
+       int flags;
 
-    tbm_user_data *old_data;
+       _tbm_bufmgr_mutex_lock();
 
-    if (LIST_IS_EMPTY (&bo->user_data_list))
-        return 0;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    old_data = _user_data_lookup (&bo->user_data_list, key);
-    if (!old_data)
-        return 0;
+       flags = bo->flags;
 
-    if (old_data->data && old_data->free_func)
-        old_data->free_func(old_data->data);
+       TBM_TRACE("bo(%p)\n", bo);
 
-    old_data->data = data;
+       _tbm_bufmgr_mutex_unlock();
 
-    return 1;
+       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);
+
+                                       value = _tbm_surface_internal_get_debug_data(surf, debug_old_data->key);
+                                       if (value)
+                                               strncat(data, value, strlen(value) + 1);
+                                       else
+                                               strncat(data, "none", 5);
+                               }
+                       }
+                       TBM_SNPRINTF(str, len, "%s\n", data);
+
+                       for (i = 0; i < surf->num_bos; i++) {
+                               TBM_SNPRINTF(str, len, " bo:%-12p  %-26d%-10d\n",
+                                         surf->bos[i],
+                                         surf->bos[i]->ref_cnt,
+                                         bufmgr->backend->bo_size(surf->bos[i]) / 1024);
+                       }
+               }
+       } else
+               TBM_SNPRINTF(str, len, " no tbm_surfaces.\n");
+       TBM_SNPRINTF(str, len, "\n");
+
+       TBM_SNPRINTF(str, len, "[tbm_bo information]\n");
+       TBM_SNPRINTF(str, len, "no  bo          refcnt  size    lock_cnt  map_cnt  flags  surface\n");
+
+       /* show the tbm_bo information in bo_list */
+       if (!LIST_IS_EMPTY(&bufmgr->bo_list)) {
+               int bo_cnt = 0;
+               tbm_bo bo = NULL;
+
+               LIST_FOR_EACH_ENTRY(bo, &bufmgr->bo_list, item_link) {
+                       TBM_SNPRINTF(str, len, "%-4d%-11p   %-4d  %-6d     %-5d     %-4u    %-3d  %-11p\n",
+                                 ++bo_cnt,
+                                 bo,
+                                 bo->ref_cnt,
+                                 bufmgr->backend->bo_size(bo) / 1024,
+                                 bo->lock_cnt,
+                                 bo->map_cnt,
+                                 bo->flags,
+                                 bo->surface);
+               }
+       } else
+               TBM_SNPRINTF(str, len, "no tbm_bos.\n");
+       TBM_SNPRINTF(str, len, "\n");
+
+       TBM_SNPRINTF(str, len, "===============================================================\n");
+
+       pthread_mutex_unlock(&gLock);
+}
+
+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);
+}
+
+void
+tbm_bufmgr_debug_trace(tbm_bufmgr bufmgr, int onoff)
+{
+       _tbm_bufmgr_mutex_lock();
+
+       TBM_BUFMGR_RETURN_IF_FAIL(TBM_BUFMGR_IS_VALID(bufmgr));
+       TBM_BUFMGR_RETURN_IF_FAIL(bufmgr == gBufMgr);
+
+#ifdef TRACE
+       TBM_LOG_D("bufmgr=%p onoff=%d\n", bufmgr, onoff);
+       bTrace = onoff;
+#endif
+
+       _tbm_bufmgr_mutex_unlock();
+}
+
+void
+tbm_bufmgr_debug_dump_set_scale(double scale)
+{
+       pthread_mutex_lock(&gLock);
+       scale_factor = scale;
+       pthread_mutex_unlock(&gLock);
 }
 
 int
-tbm_bo_get_user_data (tbm_bo bo, unsigned long key, void** data)
+tbm_bufmgr_debug_queue_dump(char *path, int count, int onoff)
+{
+       pthread_mutex_lock(&gLock);
+
+       if (onoff == 0) {
+               TBM_LOG_D("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");
+                       pthread_mutex_unlock(&gLock);
+                       return 0;
+               }
+               TBM_LOG_D("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");
+                       pthread_mutex_unlock(&gLock);
+                       return 0;
+               }
+
+               tbm_surface_internal_dump_with_scale_start(path, w, h, count, scale_factor);
+               scale_factor = 0;
+
+               b_dump_queue = 1;
+       }
+
+       pthread_mutex_unlock(&gLock);
+       return 1;
+}
+
+int
+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);
+
+       count = _tbm_util_get_max_surface_size(&w, &h);
+       if (count == 0) {
+               TBM_LOG_E("No tbm_surface.\n");
+               pthread_mutex_unlock(&gLock);
+               return 1;
+       }
+
+       tbm_surface_internal_dump_with_scale_start(path, w, h, count, scale_factor);
+       scale_factor = 0;
+
+       LIST_FOR_EACH_ENTRY(surface, &gBufMgr->surf_list, item_link)
+               tbm_surface_internal_dump_buffer(surface, "dump_all");
+
+       tbm_surface_internal_dump_end();
+
+       pthread_mutex_unlock(&gLock);
+
+       return 1;
+}
+
+/* internal function */
+tbm_bufmgr
+_tbm_bufmgr_get_bufmgr(void)
 {
-    TBM_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
+       return gBufMgr;
+}
 
-    tbm_user_data* old_data;
+int
+_tbm_bo_set_surface(tbm_bo bo, tbm_surface_h surface)
+{
+       _tbm_bufmgr_mutex_lock();
 
-    if (!data || LIST_IS_EMPTY (&bo->user_data_list))
-        return 0;
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
 
-    old_data = _user_data_lookup (&bo->user_data_list, key);
-    if (!old_data)
-    {
-        *data = NULL;
-        return 0;
-    }
+       bo->surface = surface;
 
-    *data = old_data->data;
+       _tbm_bufmgr_mutex_unlock();
 
-    return 1;
+       return 1;
 }
 
 int
-tbm_bo_delete_user_data (tbm_bo bo, unsigned long key)
+tbm_bufmgr_bind_native_display(tbm_bufmgr bufmgr, void *NativeDisplay)
 {
-    TBM_RETURN_VAL_IF_FAIL(_tbm_bo_is_valid(bo), 0);
+       int ret;
+
+       _tbm_bufmgr_mutex_lock();
+
+       TBM_BUFMGR_RETURN_VAL_IF_FAIL(TBM_BUFMGR_IS_VALID(gBufMgr), 0);
 
-    tbm_user_data *old_data = (void *)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;
+       }
 
-    if (LIST_IS_EMPTY (&bo->user_data_list))
-        return 0;
+       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;
+       }
 
-    old_data = _user_data_lookup (&bo->user_data_list, key);
-    if (!old_data)
-        return 0;
+       TBM_TRACE("tbm_bufmgr(%p) NativeDisplay(%p)\n", bufmgr, NativeDisplay);
 
-    _user_data_delete (old_data);
+       _tbm_bufmgr_mutex_unlock();
 
-    return 1;
+       return 1;
 }
 
+int tbm_bufmgr_get_fd_limit(void)
+{
+       struct rlimit lim;
+
+       if (getrlimit(RLIMIT_NOFILE, &lim))
+               return 1024;
+
+       return (int)lim.rlim_cur;
+}
+/* LCOV_EXCL_STOP */