# SDL\_net: Allow library to init multiple times.

**URL:** <https://discourse.libsdl.org/t/sdl-net-allow-library-to-init-multiple-times/46290>\
**Category:** SDL Commits\
**Created:** [September 30, 2023, 5:02am UTC](https://discourse.libsdl.org/t/sdl-net-allow-library-to-init-multiple-times/46290 "2023-09-30T05:02:39Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![SDLPushPostBot](https://discourse.libsdl.org/user_avatar/discourse.libsdl.org/sdlpushpostbot/32/4370_2.png) [@SDLPushPostBot](https://discourse.libsdl.org/u/SDLPushPostBot)\
**Post date:** [September 30, 2023, 5:02am UTC](https://discourse.libsdl.org/t/sdl-net-allow-library-to-init-multiple-times/46290/1 "2023-09-30T05:02:39Z")

</div>

> <https://github.com/libsdl-org/SDL_net/commit/ebe934a05294a86a2761130e24314beff50f553d>

```diff
From ebe934a05294a86a2761130e24314beff50f553d Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Sun, 24 Sep 2023 11:18:59 -0400
Subject: [PATCH] Allow library to init multiple times.

---
 SDL_net.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/SDL_net.c b/SDL_net.c
index a5dd21e..44b5e3d 100644
--- a/SDL_net.c
+++ b/SDL_net.c
@@ -330,8 +330,14 @@ static SDLNet_Address *CreateSDLNetAddrFromSockAddr(struct sockaddr *saddr, Sock
     return SDLNet_RefAddress(addr);
 }
 
+static SDL_AtomicInt initialize_count;
+
 int SDLNet_Init(void)
 {
+ if (SDL_AtomicAdd(&initialize_count, 1) > 0) {
+ return 0; // already initialized, call it a success.
+ }
+
     char *origerrstr = NULL;
 
     #ifdef __WINDOWS__
@@ -385,6 +391,14 @@ int SDLNet_Init(void)
 
 void SDLNet_Quit(void)
 {
+ const int prevcount = SDL_AtomicAdd(&initialize_count, -1);
+ if (prevcount <= 0) {
+ SDL_AtomicAdd(&initialize_count, 1); // bump back up.
+ return; // we weren't initialized!
+ } else if (prevcount > 1) {
+ return; // need to quit more, to match previous init calls.
+ }
+
     if (resolver_lock && resolver_condition) {
         SDL_LockMutex(resolver_lock);
         SDL_AtomicSet(&resolver_shutdown, 1);

```