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