Use FOLLY_MOBILE to split some functionality

Summary: The guards already look for __APPLE__, but __ANDROID__ needs this as well.

Reviewed By: yfeldblum

Differential Revision: D3053976

fb-gh-sync-id: a9ba7a612d29502d4a7e691c6741837d4a8b42f0
shipit-source-id: a9ba7a612d29502d4a7e691c6741837d4a8b42f0

folly/Portability.h

@@ -210,7 +210,7 @@ namespace std { typedef ::max_align_t max_align_t; }
 # error cannot define platform specific thread local storage
 #endif
 
-#if defined(__APPLE__) && (TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE)
+#if FOLLY_MOBILE
 #undef FOLLY_TLS
 #endif
 

folly/RWSpinLock.h

@@ -150,7 +150,7 @@ pthread_rwlock_t Read        728698     24us       101ns     7.28ms     194us
 #endif
 
 // iOS doesn't define _mm_cvtsi64_si128 and friends
-#if (FOLLY_SSE >= 2) && !TARGET_OS_IPHONE
+#if (FOLLY_SSE >= 2) && !FOLLY_MOBILE
 #define RW_SPINLOCK_USE_SSE_INSTRUCTIONS_
 #else
 #undef RW_SPINLOCK_USE_SSE_INSTRUCTIONS_

folly/configure.ac

@@ -236,7 +236,7 @@ AC_CACHE_CHECK(
   [for c++11 atomic support without GNU Atomic library],
   [folly_cv_lib_libatomic],
   [AC_LINK_IFELSE(
-    [AC_LANG_PROGRAM[
+    [AC_LANG_SOURCE[
       #include <atomic>
       int main() {
         struct Test { int val; };
@@ -501,6 +501,15 @@ else
    AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
 fi
 
+AC_ARG_ENABLE([mobile],
+   AS_HELP_STRING([--enable-mobile],
+                  [enables using main function from folly for tests]),
+                  [mobile=${enableval}], [mobile=no])
+AS_IF([test "x${mobile}" = "xyes"], [
+    AC_DEFINE([MOBILE], [1],
+              [Define to 1 for compiler guards for mobile targets.])
+])
+
 # Include directory that contains "folly" so #include <folly/Foo.h> works
 AM_CPPFLAGS='-I$(top_srcdir)/..'
 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"

folly/detail/MemoryIdler.cpp

@@ -15,19 +15,20 @@
  */
 
 #include <folly/detail/MemoryIdler.h>
+
 #include <folly/Logging.h>
 #include <folly/Malloc.h>
+#include <folly/Portability.h>
 #include <folly/ScopeGuard.h>
 #include <folly/detail/CacheLocality.h>
 #include <limits.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <string.h>
-#include <unistd.h>
 #include <sys/mman.h>
+#include <unistd.h>
 #include <utility>
 
-
 namespace folly { namespace detail {
 
 AtomicStruct<std::chrono::steady_clock::duration>
@@ -92,7 +93,8 @@ void MemoryIdler::flushLocalMallocCaches() {
 // Stack madvise isn't Linux or glibc specific, but the system calls
 // and arithmetic (and bug compatibility) are not portable.  The set of
 // platforms could be increased if it was useful.
-#if (FOLLY_X64 || FOLLY_PPC64 ) && defined(_GNU_SOURCE) && defined(__linux__)
+#if (FOLLY_X64 || FOLLY_PPC64) && defined(_GNU_SOURCE) && \
+    defined(__linux__) && !FOLLY_MOBILE
 
 static FOLLY_TLS uintptr_t tls_stackLimit;
 static FOLLY_TLS size_t tls_stackSize;

folly/detail/ThreadLocalDetail.h

@@ -28,10 +28,11 @@
 
 #include <glog/logging.h>
 
-#include <folly/Foreach.h>
 #include <folly/Exception.h>
+#include <folly/Foreach.h>
 #include <folly/Malloc.h>
 #include <folly/MicroSpinLock.h>
+#include <folly/Portability.h>
 
 #include <folly/detail/StaticSingletonManager.h>
 
@@ -41,7 +42,7 @@
 //
 // XXX: Ideally we would instead determine if emutls is in use at runtime as it
 // is possible to configure glibc on Linux to use emutls regardless.
-#if !__APPLE__ && !__ANDROID__
+#if !FOLLY_MOBILE && !defined(__APPLE__)
 #define FOLLY_TLD_USE_FOLLY_TLS 1
 #else
 #undef FOLLY_TLD_USE_FOLLY_TLS

folly/futures/Future-inl.h

@@ -28,7 +28,7 @@
 #include <folly/futures/detail/Core.h>
 #include <folly/futures/Timekeeper.h>
 
-#if defined(__ANDROID__) || defined(__APPLE__)
+#if FOLLY_MOBILE || defined(__APPLE__)
 #define FOLLY_FUTURE_USING_FIBER 0
 #else
 #define FOLLY_FUTURE_USING_FIBER 1