From 2add5099b9a7306eb1f35826a7586b358a86b5b8 Mon Sep 17 00:00:00 2001
From: John T McIntosh <johntmcintosh@gmail.com>
Date: Wed, 20 Dec 2017 06:49:09 -0600
Subject: [PATCH] Add support for toggling logs off and back on at runtime
 #trivial (#714)

---
 Source/Base/ASLog.h | 10 ++++++++++
 Source/Base/ASLog.m |  9 +++++----
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/Source/Base/ASLog.h b/Source/Base/ASLog.h
index be4bff368..c6aba76ba 100644
--- a/Source/Base/ASLog.h
+++ b/Source/Base/ASLog.h
@@ -42,6 +42,16 @@ ASDISPLAYNODE_EXTERN_C_BEGIN
  */
 void ASDisableLogging(void);
 
+/**
+ * Restore logging that has been runtime-disabled via ASDisableLogging().
+ *
+ * Logging can be disabled at runtime using the ASDisableLogging() function.
+ * This command restores logging to the level provided in the build
+ * configuration. This can be used in conjunction with ASDisableLogging()
+ * to allow logging to be toggled off and back on at runtime.
+ */
+void ASEnableLogging(void);
+
 /// Log for general node events e.g. interfaceState, didLoad.
 #define ASNodeLogEnabled 1
 os_log_t ASNodeLog(void);
diff --git a/Source/Base/ASLog.m b/Source/Base/ASLog.m
index 8e65c4b55..e1c42ea79 100644
--- a/Source/Base/ASLog.m
+++ b/Source/Base/ASLog.m
@@ -16,10 +16,11 @@
 static atomic_bool __ASLogEnabled = ATOMIC_VAR_INIT(YES);
 
 void ASDisableLogging() {
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^{
-    atomic_store(&__ASLogEnabled, NO);
-  });
+  atomic_store(&__ASLogEnabled, NO);
+}
+
+void ASEnableLogging() {
+  atomic_store(&__ASLogEnabled, YES);
 }
 
 ASDISPLAYNODE_INLINE BOOL ASLoggingIsEnabled() {