From bb92d582bf78816c7249c9cbbe8210a689912fb9 Mon Sep 17 00:00:00 2001
From: jp9000 <obs.jim@gmail.com>
Date: Sun, 16 Mar 2014 16:23:11 -0700
Subject: [PATCH] Add atomic increment/decrement platform funcs

---
 libobs/util/platform-nix.c     | 10 ++++++++++
 libobs/util/platform-windows.c | 11 ++++++++++-
 libobs/util/platform.h         |  3 +++
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/libobs/util/platform-nix.c b/libobs/util/platform-nix.c
index 30586699d..21d7dd5cf 100644
--- a/libobs/util/platform-nix.c
+++ b/libobs/util/platform-nix.c
@@ -116,3 +116,13 @@ int os_mkdir(const char *path)
 
 	return (errno == EEXIST) ? MKDIR_EXISTS : MKDIR_ERROR;
 }
+
+long atomic_inc_long(volatile long *val)
+{
+	return __sync_fetch_and_add(val, 1);
+}
+
+long atomic_dec_long(volatile long *val)
+{
+	return __sync_fetch_and_sub(val, 1);
+}
diff --git a/libobs/util/platform-windows.c b/libobs/util/platform-windows.c
index d651f72c8..3b30c4f4a 100644
--- a/libobs/util/platform-windows.c
+++ b/libobs/util/platform-windows.c
@@ -185,6 +185,16 @@ int os_mkdir(const char *path)
 	return MKDIR_SUCCESS;
 }
 
+long atomic_inc_long(volatile long *val)
+{
+	return InterlockedIncrement(val);
+}
+
+long atomic_dec_long(volatile long *val)
+{
+	return InterlockedDecrement(val);
+}
+
 
 BOOL WINAPI DllMain(HINSTANCE hinst_dll, DWORD reason, LPVOID reserved)
 {
@@ -219,4 +229,3 @@ BOOL WINAPI DllMain(HINSTANCE hinst_dll, DWORD reason, LPVOID reserved)
 
 	return true;
 }
-
diff --git a/libobs/util/platform.h b/libobs/util/platform.h
index 846acb71e..48b36218e 100644
--- a/libobs/util/platform.h
+++ b/libobs/util/platform.h
@@ -76,6 +76,9 @@ EXPORT char *os_get_config_path(const char *name);
 
 EXPORT bool os_file_exists(const char *path);
 
+EXPORT long atomic_inc_long(volatile long *val);
+EXPORT long atomic_dec_long(volatile long *val);
+
 #define MKDIR_EXISTS   1
 #define MKDIR_SUCCESS  0
 #define MKDIR_ERROR   -1