#define BLOCK_ALIGN 16
/* Initial reserved header and footer size (must be multiple of alignment) */
#define BLOCK_PADDING 32
+/* Maximum size of reserved footer before we release with realloc() */
+#define BLOCK_WASTE_SIZE 2048
block_t *block_Alloc( size_t i_size )
{
block_Release( p_block );
p_block = p_rea;
}
+ else
+ /* We have a very large reserved footer now? Release some of it.
+ * XXX it might not preserve the alignment of p_buffer */
+ if( p_end - (p_block->p_buffer + i_body) > BLOCK_WASTE_SIZE )
+ {
+ const ptrdiff_t i_prebody = p_block->p_buffer - p_start;
+ const size_t i_new = requested + 1 * BLOCK_PADDING;
+ block_sys_t *p_new = realloc( p_sys, sizeof (*p_sys) + i_new );
+
+ if( p_new != NULL )
+ {
+ p_sys = p_new;
+ p_sys->i_allocated_buffer = i_new;
+ p_block = &p_sys->self;
+ p_block->p_buffer = &p_sys->p_allocated_buffer[i_prebody];
+ }
+ }
/* NOTE: p_start and p_end are corrupted from this point */