520   uint8_t* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize;  in InstallImplicitProtection()  local
526         static_cast<void*>(pregion) << " to " <<  in InstallImplicitProtection()
527         static_cast<void*>(pregion + kStackOverflowProtectedSize - 1);  in InstallImplicitProtection()
531     uint32_t unwanted_size = stack_top - pregion - kPageSize;  in InstallImplicitProtection()
532     madvise(pregion, unwanted_size, MADV_DONTNEED);  in InstallImplicitProtection()
561       static_cast<void*>(pregion);  in InstallImplicitProtection()
566   for (uint8_t* p = stack_top; p >= pregion; p -= kPageSize) {  in InstallImplicitProtection()
571       static_cast<void*>(pregion) << " to " <<  in InstallImplicitProtection()
572       static_cast<void*>(pregion + kStackOverflowProtectedSize - 1);  in InstallImplicitProtection()
579   uint32_t unwanted_size = stack_top - pregion - kPageSize;  in InstallImplicitProtection()
580   madvise(pregion, unwanted_size, MADV_DONTNEED);  in InstallImplicitProtection()
3498   void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize;  in ProtectStack()  local
3499   VLOG(threads) << "Protecting stack at " << pregion;  in ProtectStack()
3500   if (mprotect(pregion, kStackOverflowProtectedSize, PROT_NONE) == -1) {  in ProtectStack()
3512   void* pregion = tlsPtr_.stack_begin - kStackOverflowProtectedSize;  in UnprotectStack()  local
3513   VLOG(threads) << "Unprotecting stack at " << pregion;  in UnprotectStack()
3514   return mprotect(pregion, kStackOverflowProtectedSize, PROT_READ|PROT_WRITE) == 0;  in UnprotectStack()