| 1 | //===-- memprof_linux.cpp ------------------------------------------------===// |
|---|---|
| 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 | // This file is a part of MemProfiler, a memory profiler. |
| 10 | // |
| 11 | // Linux-specific details. |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "sanitizer_common/sanitizer_platform.h" |
| 15 | #if !SANITIZER_LINUX |
| 16 | #error Unsupported OS |
| 17 | #endif |
| 18 | |
| 19 | #include "memprof_interceptors.h" |
| 20 | #include "memprof_internal.h" |
| 21 | #include "memprof_thread.h" |
| 22 | #include "sanitizer_common/sanitizer_flags.h" |
| 23 | #include "sanitizer_common/sanitizer_libc.h" |
| 24 | #include "sanitizer_common/sanitizer_procmaps.h" |
| 25 | |
| 26 | #include <dlfcn.h> |
| 27 | #include <fcntl.h> |
| 28 | #include <limits.h> |
| 29 | #include <link.h> |
| 30 | #include <pthread.h> |
| 31 | #include <stdio.h> |
| 32 | #include <sys/mman.h> |
| 33 | #include <sys/resource.h> |
| 34 | #include <sys/syscall.h> |
| 35 | #include <sys/time.h> |
| 36 | #include <sys/types.h> |
| 37 | #include <sys/ucontext.h> |
| 38 | #include <unistd.h> |
| 39 | #include <unwind.h> |
| 40 | |
| 41 | typedef enum { |
| 42 | MEMPROF_RT_VERSION_UNDEFINED = 0, |
| 43 | MEMPROF_RT_VERSION_DYNAMIC, |
| 44 | MEMPROF_RT_VERSION_STATIC, |
| 45 | } memprof_rt_version_t; |
| 46 | |
| 47 | // FIXME: perhaps also store abi version here? |
| 48 | extern "C"{ |
| 49 | SANITIZER_INTERFACE_ATTRIBUTE |
| 50 | memprof_rt_version_t __memprof_rt_version; |
| 51 | } |
| 52 | |
| 53 | namespace __memprof { |
| 54 | |
| 55 | void InitializePlatformInterceptors() {} |
| 56 | void InitializePlatformExceptionHandlers() {} |
| 57 | |
| 58 | uptr FindDynamicShadowStart() { |
| 59 | uptr shadow_size_bytes = MemToShadowSize(size: kHighMemEnd); |
| 60 | return MapDynamicShadow(shadow_size_bytes, SHADOW_SCALE, |
| 61 | /*min_shadow_base_alignment*/ 0, high_mem_end&: kHighMemEnd); |
| 62 | } |
| 63 | |
| 64 | void *MemprofDlSymNext(const char *sym) { return dlsym(RTLD_NEXT, name: sym); } |
| 65 | |
| 66 | } // namespace __memprof |
| 67 |