[plugin macros] clean up all usage of context; also document a few more things

source/md_malloc.c

@@ -3,23 +3,14 @@
 ////////////////////////////////
 // TODO(allen): Write commentary for all of this.
 
-#define MD_IMPL_Alloc(ctx,size) MD_MALLOC_Alloc(ctx,size)
+#define MD_IMPL_Alloc(size) MD_MALLOC_Alloc(size)
 
 static void*
-MD_MALLOC_Alloc(void *ctx, MD_u64 size)
+MD_MALLOC_Alloc(MD_u64 size)
 {
-    MD_Assert(ctx == MD_MALLOC_Alloc);
     return(malloc(size));
 }
 
-#define MD_IMPL_GetCtx() MD_MALLOC_GetCtx()
-
-static void*
-MD_MALLOC_GetCtx(void)
-{
-    return((void *)MD_MALLOC_Alloc);
-}
-
 /*
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