From 7db93a376bc81bbda7f6a535e80cd7ca8b0ec3ca Mon Sep 17 00:00:00 2001
From: Ben Nham <nham@fb.com>
Date: Wed, 31 Aug 2016 11:24:34 -0700
Subject: [PATCH] configure glog sink for custom jsc

Reviewed By: alexeylang

Differential Revision: D3789493

fbshipit-source-id: b3ecbd1caddfeef5e948e43444be95207c573f67
---
 React/Executors/RCTJSCWrapper.mm | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/React/Executors/RCTJSCWrapper.mm b/React/Executors/RCTJSCWrapper.mm
index ceaf89af71a..0a736df2b2f 100644
--- a/React/Executors/RCTJSCWrapper.mm
+++ b/React/Executors/RCTJSCWrapper.mm
@@ -16,6 +16,12 @@
 
 #include <dlfcn.h>
 
+#if HAS_FBGLOG
+#import <FBGLog/FBGLogSink.h>
+
+typedef void (*configureJSCLoggingForIOSFuncType)(int32_t, std::unique_ptr<google::LogSink>, void (*)());
+#endif
+
 static void *RCTCustomLibraryHandler(void)
 {
   static dispatch_once_t token;
@@ -88,6 +94,18 @@ static void RCTSetUpCustomLibraryPointers(RCTJSCWrapper *wrapper)
   wrapper->JSContext = (__bridge Class)dlsym(libraryHandle, "OBJC_CLASS_$_JSContext");
   wrapper->JSValue = (__bridge Class)dlsym(libraryHandle, "OBJC_CLASS_$_JSValue");
   wrapper->configureJSContextForIOS = (configureJSContextForIOSFuncType)dlsym(libraryHandle, "configureJSContextForIOS");
+
+#if HAS_FBGLOG
+  static dispatch_once_t once;
+  dispatch_once(&once, ^{
+    void *handle = dlsym(libraryHandle, "configureJSCLoggingForIOS");
+
+    if (handle) {
+      configureJSCLoggingForIOSFuncType logConfigFunc = (configureJSCLoggingForIOSFuncType)handle;
+      logConfigFunc(google::GLOG_INFO, FBGLogSink(), FBGLogFailureFunction);
+    }
+  });
+#endif
 }
 
 RCTJSCWrapper *RCTJSCWrapperCreate(BOOL useCustomJSC)