[Tsan] Fix references to libc entities in tsan_interceptors.cc on FreeBSD

[emaste]

lib/tsan/rtl/tsan_interceptors.cc

2256

FreeBSD has mallctl() as a rough analog if tuning is needed.

[samsonov]

+Dmitry

Looks fine.

[kutuzov.viktor.84]

FreeBSD has mallctl() as a rough analog if tuning is needed.

Seems like it works fine as-is. But thanks for pointing it out!

Closed by commit rL219395 (authored by vkutuzov).

lib/tsan/rtl/tsan_interceptors.cc

 #include "tsan_platform.h"
 #include "tsan_suppressions.h"
 #include "tsan_rtl.h"
 #include "tsan_mman.h"
 #include "tsan_fd.h"
 
 using namespace __tsan;  // NOLINT
 
+#if SANITIZER_FREEBSD
+#define __errno_location __error
+#define __libc_malloc __malloc
+#define __libc_realloc __realloc
+#define __libc_calloc __calloc
+#define __libc_free __free
+#define stdout __stdoutp
+#define stderr __stderrp
+#endif
+
 const int kSigCount = 65;
 
 struct my_siginfo_t {
   // The size is determined by looking at sizeof of real siginfo_t on linux.
   u64 opaque[128 / sizeof(u64)];
 };
 
 struct ucontext_t {

 extern "C" void *pthread_self();
 extern "C" void _exit(int status);
 extern "C" int *__errno_location();
 extern "C" int fileno_unlocked(void *stream);
 extern "C" void *__libc_malloc(uptr size);
 extern "C" void *__libc_calloc(uptr size, uptr n);
 extern "C" void *__libc_realloc(void *ptr, uptr size);
 extern "C" void __libc_free(void *ptr);
+#if !SANITIZER_FREEBSD
 extern "C" int mallopt(int param, int value);
+#endif
 extern __sanitizer_FILE *stdout, *stderr;
 const int PTHREAD_MUTEX_RECURSIVE = 1;
 const int PTHREAD_MUTEX_RECURSIVE_NP = 1;
 const int EINVAL = 22;
 const int EBUSY = 16;
 const int EOWNERDEAD = 130;
 const int EPOLL_CTL_ADD = 1;
 const int SIGILL = 4;

 
 void InitializeInterceptors() {
   // We need to setup it early, because functions like dlsym() can call it.
   REAL(memset) = internal_memset;
   REAL(memcpy) = internal_memcpy;
   REAL(memcmp) = internal_memcmp;
 
   // Instruct libc malloc to consume less memory.
+#if !SANITIZER_FREEBSD
   mallopt(1, 0);  // M_MXFAST
   mallopt(-3, 32*1024);  // M_MMAP_THRESHOLD
+#endif
 
   InitializeCommonInterceptors();
 
   // We can not use TSAN_INTERCEPT to get setjmp addr,
   // because it does &setjmp and setjmp is not present in some versions of libc.
   using __interception::GetRealFunctionAddress;
   GetRealFunctionAddress("setjmp", (uptr*)&REAL(setjmp), 0, 0);
   GetRealFunctionAddress("_setjmp", (uptr*)&REAL(_setjmp), 0, 0);