--- a/extra_rwops.c	Sun Feb 27 19:50:54 2005 +0000
+++ b/extra_rwops.c	Sun Feb 27 19:53:25 2005 +0000
@@ -130,6 +130,88 @@
 } /* RWops_RWRefCounter_new */
 
 
+
+    /*
+     * RWops pooling...
+     */
+
+static SDL_RWops *rwops_pool = NULL;
+static SDL_mutex *rwops_pool_mutex = NULL;
+
+int RWops_pooled_init(void)
+{
+    const int preallocate = 50;
+    int i;
+
+    rwops_pool_mutex = SDL_CreateMutex();
+    if (rwops_pool_mutex == NULL)
+        return(0);
+
+    for (i = 0; i < preallocate; i++)
+        free_pooled_rwops(alloc_pooled_rwops());
+
+    return(1);
+} /* RWops_pooled_init */
+
+
+void RWops_pooled_deinit(void)
+{
+    SDL_RWops *cur;
+    SDL_RWops *next;
+
+    if (rwops_pool_mutex == NULL)
+        return;  /* never initialized. */
+
+    SDL_LockMutex(rwops_pool_mutex);
+    /* all allocated rwops must be in the pool now, or the memory leaks. */
+    cur = rwops_pool;
+    rwops_pool = NULL;
+    SDL_UnlockMutex(rwops_pool_mutex);
+    SDL_DestroyMutex(rwops_pool_mutex);
+    rwops_pool_mutex = NULL;
+
+    while (cur)
+    {
+        next = (SDL_RWops *) (cur->hidden.unknown.data1);
+        free(cur);
+        cur = next;
+    } /* while */
+} /* RWops_pooled_deinit */
+
+
+SDL_RWops *RWops_pooled_alloc(void)
+{
+    SDL_RWops *rw;
+    if (rwops_pool_mutex == NULL)
+        return(NULL);  /* never initialized. */
+
+    SDL_LockMutex(rwops_pool_mutex);
+    rw = rwops_pool;
+    if (rw)
+        rwops_pool = (SDL_RWops *) (rw->hidden.unknown.data1);
+    SDL_UnlockMutex(rwops_pool_mutex);
+
+    if (!rw)
+        rw = (SDL_RWops *) malloc(sizeof (SDL_RWops));
+
+    return(rw);
+} /* RWops_pooled_alloc */
+
+
+void RWops_pooled_free(SDL_RWops *rw)
+{
+    if (rwops_pool_mutex == NULL)
+        return;  /* never initialized...why are we here? */
+
+    if (rw == NULL)
+        return;
+
+    SDL_LockMutex(rwops_pool_mutex);
+    rw->hidden.unknown.data1 = rwops_pool;
+    rwops_pool = rw;
+    SDL_UnlockMutex(rwops_pool_mutex);
+} /* RWops_pooled_free */
+
 /* end of extra_rwops.c ... */