From 636c693f447f4c242a1fff5ad987bc6102b3e243 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 12 Jan 2017 12:47:46 +0100
Subject: Use const in modules types mem_usage method.

As suggested by @itamarhaber.
---
 src/modules/hellotype.c | 4 ++--
 src/redismodule.h       | 2 +-
 src/server.h            | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/modules/hellotype.c b/src/modules/hellotype.c
index 1aa6c5e63..027155d45 100644
--- a/src/modules/hellotype.c
+++ b/src/modules/hellotype.c
@@ -228,8 +228,8 @@ void HelloTypeAofRewrite(RedisModuleIO *aof, RedisModuleString *key, void *value
 
 /* The goal of this function is to return the amount of memory used by
  * the HelloType value. */
-size_t HelloTypeMemUsage(void *value) {
-    struct HelloTypeObject *hto = value;
+size_t HelloTypeMemUsage(const void *value) {
+    const struct HelloTypeObject *hto = value;
     struct HelloTypeNode *node = hto->head;
     return sizeof(*hto) + sizeof(*node)*hto->len;
 }
diff --git a/src/redismodule.h b/src/redismodule.h
index 186e284c0..fcd6aeca3 100644
--- a/src/redismodule.h
+++ b/src/redismodule.h
@@ -91,7 +91,7 @@ typedef int (*RedisModuleCmdFunc) (RedisModuleCtx *ctx, RedisModuleString **argv
 typedef void *(*RedisModuleTypeLoadFunc)(RedisModuleIO *rdb, int encver);
 typedef void (*RedisModuleTypeSaveFunc)(RedisModuleIO *rdb, void *value);
 typedef void (*RedisModuleTypeRewriteFunc)(RedisModuleIO *aof, RedisModuleString *key, void *value);
-typedef size_t (*RedisModuleTypeMemUsageFunc)(void *value);
+typedef size_t (*RedisModuleTypeMemUsageFunc)(const void *value);
 typedef void (*RedisModuleTypeDigestFunc)(RedisModuleDigest *digest, void *value);
 typedef void (*RedisModuleTypeFreeFunc)(void *value);
 
diff --git a/src/server.h b/src/server.h
index bbc121b72..96bbb9ccf 100644
--- a/src/server.h
+++ b/src/server.h
@@ -483,7 +483,7 @@ typedef void *(*moduleTypeLoadFunc)(struct RedisModuleIO *io, int encver);
 typedef void (*moduleTypeSaveFunc)(struct RedisModuleIO *io, void *value);
 typedef void (*moduleTypeRewriteFunc)(struct RedisModuleIO *io, struct redisObject *key, void *value);
 typedef void (*moduleTypeDigestFunc)(struct RedisModuleDigest *digest, void *value);
-typedef size_t (*moduleTypeMemUsageFunc)(void *value);
+typedef size_t (*moduleTypeMemUsageFunc)(const void *value);
 typedef void (*moduleTypeFreeFunc)(void *value);
 
 /* The module type, which is referenced in each value of a given type, defines
-- 
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