| //===-- sanitizer_posix_libcdep.cc ----------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is shared between AddressSanitizer and ThreadSanitizer |
| // run-time libraries and implements libc-dependent POSIX-specific functions |
| // from sanitizer_libc.h. |
| //===----------------------------------------------------------------------===// |
| |
| #include "sanitizer_platform.h" |
| |
| #if SANITIZER_LINUX || SANITIZER_MAC |
| #include "sanitizer_common.h" |
| #include "sanitizer_stacktrace.h" |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <sys/mman.h> |
| #include <sys/resource.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| namespace __sanitizer { |
| |
| u32 GetUid() { |
| return getuid(); |
| } |
| |
| uptr GetThreadSelf() { |
| return (uptr)pthread_self(); |
| } |
| |
| void FlushUnneededShadowMemory(uptr addr, uptr size) { |
| madvise((void*)addr, size, MADV_DONTNEED); |
| } |
| |
| void DisableCoreDumper() { |
| struct rlimit nocore; |
| nocore.rlim_cur = 0; |
| nocore.rlim_max = 0; |
| setrlimit(RLIMIT_CORE, &nocore); |
| } |
| |
| bool StackSizeIsUnlimited() { |
| struct rlimit rlim; |
| CHECK_EQ(0, getrlimit(RLIMIT_STACK, &rlim)); |
| return (rlim.rlim_cur == (uptr)-1); |
| } |
| |
| void SetStackSizeLimitInBytes(uptr limit) { |
| struct rlimit rlim; |
| rlim.rlim_cur = limit; |
| rlim.rlim_max = limit; |
| if (setrlimit(RLIMIT_STACK, &rlim)) { |
| Report("ERROR: %s setrlimit() failed %d\n", SanitizerToolName, errno); |
| Die(); |
| } |
| CHECK(!StackSizeIsUnlimited()); |
| } |
| |
| void SleepForSeconds(int seconds) { |
| sleep(seconds); |
| } |
| |
| void SleepForMillis(int millis) { |
| usleep(millis * 1000); |
| } |
| |
| void Abort() { |
| abort(); |
| } |
| |
| int Atexit(void (*function)(void)) { |
| #ifndef SANITIZER_GO |
| return atexit(function); |
| #else |
| return 0; |
| #endif |
| } |
| |
| int internal_isatty(fd_t fd) { |
| return isatty(fd); |
| } |
| |
| #ifndef SANITIZER_GO |
| void GetStackTrace(StackTrace *stack, uptr max_s, uptr pc, uptr bp, |
| uptr stack_top, uptr stack_bottom, bool fast) { |
| // Check if fast unwind is available. Fast unwind is the only option on Mac. |
| if (!SANITIZER_CAN_FAST_UNWIND) |
| fast = false; |
| else if (SANITIZER_MAC) |
| fast = true; |
| |
| if (!fast) |
| stack->SlowUnwindStack(pc, max_s); |
| else |
| stack->FastUnwindStack(pc, bp, stack_top, stack_bottom, max_s); |
| } |
| #endif // SANITIZER_GO |
| |
| } // namespace __sanitizer |
| |
| #endif |