[PATCH] [Tsan] Do not intercept non-FreeBSD functions on FreeBSD

[Dmitry Vyukov]

I am proposing something in between:


#if SANITIZER_LINUX
TSAN_INTERCEPTOR(int, epoll_create, int size) {
  SCOPED_TSAN_INTERCEPTOR(epoll_create, size);
  int fd = REAL(epoll_create)(size);
  if (fd >= 0)
    FdPollCreate(thr, pc, fd);
  return fd;
}
#define TSAN_MAYBE_INTERCEPT_EPOLL_CREATE TSAN_INTERCEPT(epoll_create)
#else
#define TSAN_MAYBE_INTERCEPT_EPOLL_CREATE
#endif


void InitializeInterceptors() {
...
  TSAN_MAYBE_INTERCEPT_EPOLL_CREATE;


The original version indeed has unnecessary duplication of information. And the current version has unnecessary dissipation of information -- I need to update 3 places to add an interceptor, and when I am looking at an interceptor I can't understand when it's enabled (TSAN_INTERCEPT_TMPFILE64 name is pointless and does not communicate any useful information to me).

http://reviews.llvm.org/D5858