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