1e8d8bef9SDimitry Andric //===-- memprof_linux.cpp ------------------------------------------------===// 2e8d8bef9SDimitry Andric // 3e8d8bef9SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e8d8bef9SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5e8d8bef9SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e8d8bef9SDimitry Andric // 7e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 8e8d8bef9SDimitry Andric // 9e8d8bef9SDimitry Andric // This file is a part of MemProfiler, a memory profiler. 10e8d8bef9SDimitry Andric // 11e8d8bef9SDimitry Andric // Linux-specific details. 12e8d8bef9SDimitry Andric //===----------------------------------------------------------------------===// 13e8d8bef9SDimitry Andric 14e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_platform.h" 15e8d8bef9SDimitry Andric #if !SANITIZER_LINUX 16e8d8bef9SDimitry Andric #error Unsupported OS 17e8d8bef9SDimitry Andric #endif 18e8d8bef9SDimitry Andric 19e8d8bef9SDimitry Andric #include "memprof_interceptors.h" 20e8d8bef9SDimitry Andric #include "memprof_internal.h" 21e8d8bef9SDimitry Andric #include "memprof_thread.h" 22e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_flags.h" 23e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_libc.h" 24e8d8bef9SDimitry Andric #include "sanitizer_common/sanitizer_procmaps.h" 25e8d8bef9SDimitry Andric 26e8d8bef9SDimitry Andric #include <dlfcn.h> 27e8d8bef9SDimitry Andric #include <fcntl.h> 28e8d8bef9SDimitry Andric #include <limits.h> 29e8d8bef9SDimitry Andric #include <link.h> 30e8d8bef9SDimitry Andric #include <pthread.h> 31e8d8bef9SDimitry Andric #include <stdio.h> 32e8d8bef9SDimitry Andric #include <sys/mman.h> 33e8d8bef9SDimitry Andric #include <sys/resource.h> 34e8d8bef9SDimitry Andric #include <sys/syscall.h> 35e8d8bef9SDimitry Andric #include <sys/time.h> 36e8d8bef9SDimitry Andric #include <sys/types.h> 37e8d8bef9SDimitry Andric #include <sys/ucontext.h> 38e8d8bef9SDimitry Andric #include <unistd.h> 39e8d8bef9SDimitry Andric #include <unwind.h> 40e8d8bef9SDimitry Andric 41e8d8bef9SDimitry Andric typedef enum { 42e8d8bef9SDimitry Andric MEMPROF_RT_VERSION_UNDEFINED = 0, 43e8d8bef9SDimitry Andric MEMPROF_RT_VERSION_DYNAMIC, 44e8d8bef9SDimitry Andric MEMPROF_RT_VERSION_STATIC, 45e8d8bef9SDimitry Andric } memprof_rt_version_t; 46e8d8bef9SDimitry Andric 47e8d8bef9SDimitry Andric // FIXME: perhaps also store abi version here? 48e8d8bef9SDimitry Andric extern "C" { 49e8d8bef9SDimitry Andric SANITIZER_INTERFACE_ATTRIBUTE 50e8d8bef9SDimitry Andric memprof_rt_version_t __memprof_rt_version; 51e8d8bef9SDimitry Andric } 52e8d8bef9SDimitry Andric 53e8d8bef9SDimitry Andric namespace __memprof { 54e8d8bef9SDimitry Andric 55e8d8bef9SDimitry Andric void InitializePlatformInterceptors() {} 56e8d8bef9SDimitry Andric void InitializePlatformExceptionHandlers() {} 57e8d8bef9SDimitry Andric 58e8d8bef9SDimitry Andric uptr FindDynamicShadowStart() { 59e8d8bef9SDimitry Andric uptr shadow_size_bytes = MemToShadowSize(kHighMemEnd); 60e8d8bef9SDimitry Andric return MapDynamicShadow(shadow_size_bytes, SHADOW_SCALE, 61*0fca6ea1SDimitry Andric /*min_shadow_base_alignment*/ 0, kHighMemEnd, 62*0fca6ea1SDimitry Andric GetMmapGranularity()); 63e8d8bef9SDimitry Andric } 64e8d8bef9SDimitry Andric 65e8d8bef9SDimitry Andric void *MemprofDlSymNext(const char *sym) { return dlsym(RTLD_NEXT, sym); } 66e8d8bef9SDimitry Andric 67e8d8bef9SDimitry Andric } // namespace __memprof 68