Use vlc_atomic_t for input item ID

src/input/item.c

@@ -31,6 +31,7 @@
 #include "vlc_playlist.h"
 #include "vlc_interface.h"
 #include <vlc_charset.h>
+#include <vlc_atomic.h>
 
 #include "item.h"
 #include "info.h"
@@ -844,8 +845,7 @@ input_item_t *input_item_NewWithType( vlc_object_t *p_obj, const char *psz_uri,
                                 mtime_t i_duration,
                                 int i_type )
 {
-    libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
-    static vlc_mutex_t input_id_lock = VLC_STATIC_MUTEX;
+    static vlc_atomic_t last_input_id = VLC_ATOMIC_INIT(0);
 
     input_item_t* p_input = malloc( sizeof(input_item_t ) );
     if( !p_input )
@@ -854,9 +854,7 @@ input_item_t *input_item_NewWithType( vlc_object_t *p_obj, const char *psz_uri,
     input_item_Init( p_obj, p_input );
     vlc_gc_init( p_input, input_item_Destroy );
 
-    vlc_mutex_lock( &input_id_lock );
-    p_input->i_id = ++priv->i_last_input_id;
-    vlc_mutex_unlock( &input_id_lock );
+    p_input->i_id = vlc_atomic_inc(&last_input_id);
 
     p_input->b_fixed_name = false;
 

src/libvlc.c

@@ -770,8 +770,6 @@ int libvlc_InternalInit( libvlc_int_t *p_libvlc, int i_argc,
     priv->i_timers = 0;
     priv->pp_timers = NULL;
 
-    priv->i_last_input_id = 0; /* Not very safe, should be removed */
-
     /*
      * Initialize hotkey handling
      */

src/libvlc.h

@@ -182,7 +182,6 @@ typedef struct libvlc_priv_t
 {
     libvlc_int_t       public_data;
 
-    int                i_last_input_id ; ///< Last id of input item
     bool               playlist_active;
 
     /* Messages */