1 //===-- common.cpp ----------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "common.h" 10 #include "atomic_helpers.h" 11 #include "string_utils.h" 12 13 namespace scudo { 14 15 uptr PageSizeCached; 16 uptr getPageSize(); 17 getPageSizeSlow()18uptr getPageSizeSlow() { 19 PageSizeCached = getPageSize(); 20 CHECK_NE(PageSizeCached, 0); 21 return PageSizeCached; 22 } 23 24 // Fatal internal map() or unmap() error (potentially OOM related). dieOnMapUnmapError(uptr SizeIfOOM)25void NORETURN dieOnMapUnmapError(uptr SizeIfOOM) { 26 char Error[128] = "Scudo ERROR: internal map or unmap failure\n"; 27 if (SizeIfOOM) { 28 formatString( 29 Error, sizeof(Error), 30 "Scudo ERROR: internal map failure (NO MEMORY) requesting %zuKB\n", 31 SizeIfOOM >> 10); 32 } 33 outputRaw(Error); 34 setAbortMessage(Error); 35 die(); 36 } 37 38 #if !SCUDO_LINUX GetRSS()39uptr GetRSS() { return 0; } 40 #endif 41 42 } // namespace scudo 43