From 6056e4c3eb55ab7c5000818a4457241b9ccb2019 Mon Sep 17 00:00:00 2001
From: Yann Collet <cyan@fb.com>
Date: Fri, 2 Jun 2017 11:36:47 -0700
Subject: [PATCH] added POOL_sizeof() for single-thread

---
 lib/common/pool.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/common/pool.c b/lib/common/pool.c
index 05adcf1ce..749fa4f2f 100644
--- a/lib/common/pool.c
+++ b/lib/common/pool.c
@@ -198,4 +198,9 @@ void POOL_add(void *ctx, POOL_function function, void *opaque) {
   function(opaque);
 }
 
+size_t POOL_sizeof(POOL_ctx *ctx) {
+    if (ctx==NULL) return 0;  /* supports sizeof NULL */
+    return sizeof(*ctx);
+}
+
 #endif  /* ZSTD_MULTITHREAD */