Make slab_free resilient to NULL pointers

Syllo · Syllo · commit 58660cc3bc07 · 2020-07-06T16:50:19.000+01:00
This will make slab_free behave the same way as the standard free function.
diff --git a/libworkstream_df/alloc.h b/libworkstream_df/alloc.h
@@ -430,6 +430,8 @@ slab_alloc (struct wstream_df_thread* cthread, slab_cache_p slab_cache, unsigned
 static inline void
 slab_free (slab_cache_p slab_cache, void *e)
 {
+  if (!e)
+    return;
   slab_p elem = (slab_p) e;
   slab_metainfo_p metainfo = slab_metainfo(e);
   unsigned int idx = get_slab_index (metainfo->size);

Original file line number	Diff line number	Diff line change
`@@ -430,6 +430,8 @@ slab_alloc (struct wstream_df_thread* cthread, slab_cache_p slab_cache, unsigned`
`430`	`430`	`static inline void`
`431`	`431`	`slab_free (slab_cache_p slab_cache, void *e)`
`432`	`432`	`{`
	`433`	`+ if (!e)`
	`434`	`+ return;`
`433`	`435`	`slab_p elem = (slab_p) e;`
`434`	`436`	`slab_metainfo_p metainfo = slab_metainfo(e);`
`435`	`437`	`unsigned int idx = get_slab_index (metainfo->size);`