From 99f9584a2c9a08bbffad9223a1d8e022ae20cf57 Mon Sep 17 00:00:00 2001
From: erwincoumans <erwin.coumans@gmail.com>
Date: Sat, 11 Nov 2017 21:24:49 -0800
Subject: [PATCH] revert #1419 broken pull request
 https://github.com/bulletphysics/bullet3/pull/1419

---
 src/LinearMath/btQuickprof.cpp | 70 +++++++++++++++++-----------------
 1 file changed, 34 insertions(+), 36 deletions(-)

diff --git a/src/LinearMath/btQuickprof.cpp b/src/LinearMath/btQuickprof.cpp
index d06ddaf54..aed3104a6 100644
--- a/src/LinearMath/btQuickprof.cpp
+++ b/src/LinearMath/btQuickprof.cpp
@@ -680,49 +680,47 @@ void	CProfileManager::dumpAll()
 	CProfileManager::Release_Iterator(profileIterator);
 }
 
-// clang-format off
-#if defined(_WIN32) && (defined(__MINGW32__) || defined(__MINGW64__))
-  #define BT_HAVE_TLS 1
-#elif __APPLE__ && !TARGET_OS_IPHONE
-  // TODO: Modern versions of iOS support TLS now with updated version checking.
-  #define BT_HAVE_TLS 1
-#elif __linux__
-  #define BT_HAVE_TLS 1
-#endif
 
-// __thread is broken on Andorid clang until r12b. See
-// https://github.com/android-ndk/ndk/issues/8
-#if defined(__ANDROID__) && defined(__clang__)
-  #if __has_include(<android/ndk-version.h>)
-    #include <android/ndk-version.h>
-  #endif  // __has_include(<android/ndk-version.h>)
-  #if defined(__NDK_MAJOR__) && \
-    ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1)))
-    #undef BT_HAVE_TLS
-  #endif
-#endif  // defined(__ANDROID__) && defined(__clang__)
-// clang-format on
 
-unsigned int btQuickprofGetCurrentThreadIndex2() {
-  const unsigned int kNullIndex = ~0U;
 
+unsigned int btQuickprofGetCurrentThreadIndex2()
+{
 #if BT_THREADSAFE
-  return btGetCurrentThreadIndex();
-#elif defined(BT_HAVE_TLS)
-  static __thread unsigned int sThreadIndex = kNullIndex;
-#elif defined(_WIN32)
-  __declspec(thread) static unsigned int sThreadIndex = kNullIndex;
+    return btGetCurrentThreadIndex();
+#else // #if BT_THREADSAFE
+	const unsigned int kNullIndex = ~0U;
+#ifdef _WIN32
+    #if defined(__MINGW32__) || defined(__MINGW64__)
+        static __thread unsigned int sThreadIndex = kNullIndex;
+    #else
+        __declspec( thread ) static unsigned int sThreadIndex = kNullIndex;
+    #endif
 #else
-  unsigned int sThreadIndex = 0;
-  return -1;
+#ifdef __APPLE__
+	#if TARGET_OS_IPHONE
+		unsigned int sThreadIndex = 0;
+		return -1;
+	#else
+		static __thread unsigned int sThreadIndex = kNullIndex;
+	#endif
+#else//__APPLE__
+#if __linux__
+	static __thread unsigned int sThreadIndex = kNullIndex;
+#else
+	unsigned int sThreadIndex = 0;
+	return -1;
 #endif
+#endif//__APPLE__
+	
+#endif
+	static int gThreadCounter=0;
 
-  static int gThreadCounter = 0;
-
-  if (sThreadIndex == kNullIndex) {
-    sThreadIndex = gThreadCounter++;
-  }
-  return sThreadIndex;
+	if ( sThreadIndex == kNullIndex )
+	{
+		sThreadIndex = gThreadCounter++;
+	}
+	return sThreadIndex;
+#endif // #else // #if BT_THREADSAFE
 }
 
 void	btEnterProfileZoneDefault(const char* name)