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79 lines
2.2 KiB
79 lines
2.2 KiB
4 months ago
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//===-- memprof_linux.cpp ------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of MemProfiler, a memory profiler.
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//
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// Linux-specific details.
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//===----------------------------------------------------------------------===//
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#include "sanitizer_common/sanitizer_platform.h"
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#if !SANITIZER_LINUX
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#error Unsupported OS
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#endif
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#include "memprof_interceptors.h"
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#include "memprof_internal.h"
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#include "memprof_thread.h"
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_freebsd.h"
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#include "sanitizer_common/sanitizer_libc.h"
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#include "sanitizer_common/sanitizer_procmaps.h"
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#include <dlfcn.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <link.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <sys/resource.h>
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#include <sys/syscall.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/ucontext.h>
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#include <unistd.h>
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#include <unwind.h>
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typedef enum {
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MEMPROF_RT_VERSION_UNDEFINED = 0,
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MEMPROF_RT_VERSION_DYNAMIC,
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MEMPROF_RT_VERSION_STATIC,
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} memprof_rt_version_t;
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// FIXME: perhaps also store abi version here?
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extern "C" {
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SANITIZER_INTERFACE_ATTRIBUTE
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memprof_rt_version_t __memprof_rt_version;
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}
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namespace __memprof {
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void InitializePlatformInterceptors() {}
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void InitializePlatformExceptionHandlers() {}
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void *MemprofDoesNotSupportStaticLinkage() {
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// This will fail to link with -static.
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return &_DYNAMIC; // defined in link.h
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}
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uptr FindDynamicShadowStart() {
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uptr shadow_size_bytes = MemToShadowSize(kHighMemEnd);
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return MapDynamicShadow(shadow_size_bytes, SHADOW_SCALE,
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/*min_shadow_base_alignment*/ 0, kHighMemEnd);
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}
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void ReadContextStack(void *context, uptr *stack, uptr *ssize) {
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ucontext_t *ucp = (ucontext_t *)context;
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*stack = (uptr)ucp->uc_stack.ss_sp;
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*ssize = ucp->uc_stack.ss_size;
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}
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void *MemprofDlSymNext(const char *sym) { return dlsym(RTLD_NEXT, sym); }
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} // namespace __memprof
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