FreeBSD build fix regarding native parts.

Summary: Pull Request resolved: https://github.com/facebook/folly/pull/1248

Reviewed By: yfeldblum

Differential Revision: D18094432

Pulled By: Orvid

fbshipit-source-id: 115afedc62be8881941cfb4d0e02748be349763f

folly/Memory.h

@@ -57,7 +57,8 @@ inline void deallocateBytes(void* p, size_t n) {
     (defined(__ANDROID__) && (__ANDROID_API__ > 16)) ||     \
     (defined(__APPLE__) &&                                  \
      (__MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_6 ||      \
-      __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_3_0))
+      __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_3_0)) || \
+    defined(__FreeBSD__)
 
 inline void* aligned_malloc(size_t size, size_t align) {
   // use posix_memalign, but mimic the behaviour of memalign

folly/Subprocess.cpp

@@ -558,7 +558,11 @@ int Subprocess::prepareChild(
 #endif
 
   if (options.processGroupLeader_) {
+#if !defined(__FreeBSD__)
     if (setpgrp() == -1) {
+#else
+    if (setpgrp(getpid(), getpgrp()) == -1) {
+#endif
       return errno;
     }
   }

folly/lang/UncaughtExceptions.h

@@ -24,7 +24,12 @@ namespace __cxxabiv1 {
 // forward declaration (originally defined in unwind-cxx.h from from libstdc++)
 struct __cxa_eh_globals;
 // declared in cxxabi.h from libstdc++-v3
+#if !defined(__FreeBSD__)
 extern "C" __cxa_eh_globals* __cxa_get_globals() noexcept;
+#else
+// Signature mismatch with FreeBSD case
+extern "C" __cxa_eh_globals* __cxa_get_globals();
+#endif
 } // namespace __cxxabiv1
 #elif defined(FOLLY_FORCE_EXCEPTION_COUNT_USE_STD) || defined(_MSC_VER)
 #define FOLLY_EXCEPTION_COUNT_USE_STD

folly/memory/Malloc.h

@@ -98,8 +98,6 @@ mallctlbymib(const size_t*, size_t, void*, size_t*, void*, size_t)
 // are found in stdlib.h.
 #if __has_include(<malloc.h>)
 #include <malloc.h>
-#else
-#include <stdlib.h>
 #endif
 
 #include <cassert>

folly/portability/Malloc.h

@@ -30,7 +30,7 @@
 // malloc_usable_size, and that's what we should be using.
 #include <jemalloc/jemalloc.h> // @manual
 #else
-#ifndef __APPLE__
+#if __has_include(<malloc.h>)
 #include <malloc.h>
 #endif
 

folly/portability/PThread.h

@@ -22,6 +22,10 @@
 
 #include <pthread.h>
 
+#if defined(__FreeBSD__)
+#include <sys/thr.h>
+#endif
+
 #elif !FOLLY_HAVE_PTHREAD
 
 #include <cstdint>

folly/portability/Stdlib.h

@@ -48,6 +48,11 @@ char*** _NSGetEnviron(void);
 #define environ (*_NSGetEnviron())
 #endif
 
+#if defined(__FreeBSD__)
+// Needed to resolve linkage
+char** environ;
+#endif
+
 #if !__linux__ && !FOLLY_MOBILE
 int clearenv();
 #endif

folly/system/ThreadId.h

@@ -84,6 +84,10 @@ inline uint64_t getOSThreadID() {
   return tid;
 #elif defined(_WIN32)
   return uint64_t(GetCurrentThreadId());
+#elif defined(__FreeBSD__)
+  long tid;
+  thr_self(&tid);
+  return uint64_t(tid);
 #else
   return uint64_t(syscall(FOLLY_SYS_gettid));
 #endif