323ade3e70
One of the aspects of CloudABI is that it aims to help you write code that is thread-safe out of the box. This is very important if you want to write libraries that are easy to reuse. For CloudABI we decided to not provide the thread-unsafe functions. So far this is working out pretty well, as thread-unsafety issues are detected really early on. The following patch adds a knob to libc++, _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS, that can be set to disable thread-unsafe functions that can easily be avoided in practice. The following functions are not thread-safe: - <clocale>: locale handles should be preferred over setlocale(). - <cstdlib>: mbrlen(), mbrtowc() and wcrtomb() should be preferred over their non-restartable counterparts. - <ctime>: asctime(), ctime(), gmtime() and localtime() are not thread-safe. The first two are also deprecated by POSIX. Differential Revision: http://reviews.llvm.org/D8703 Reviewed by: marshall git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@240527 91177308-0d34-0410-b5e6-96231b3b80d8
115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
// -*- C++ -*-
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//===--------------------------- cstring ----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CSTRING
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#define _LIBCPP_CSTRING
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/*
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cstring synopsis
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Macros:
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NULL
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namespace std
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{
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Types:
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size_t
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void* memcpy(void* restrict s1, const void* restrict s2, size_t n);
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void* memmove(void* s1, const void* s2, size_t n);
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char* strcpy (char* restrict s1, const char* restrict s2);
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char* strncpy(char* restrict s1, const char* restrict s2, size_t n);
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char* strcat (char* restrict s1, const char* restrict s2);
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char* strncat(char* restrict s1, const char* restrict s2, size_t n);
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int memcmp(const void* s1, const void* s2, size_t n);
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int strcmp (const char* s1, const char* s2);
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int strncmp(const char* s1, const char* s2, size_t n);
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int strcoll(const char* s1, const char* s2);
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size_t strxfrm(char* restrict s1, const char* restrict s2, size_t n);
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const void* memchr(const void* s, int c, size_t n);
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void* memchr( void* s, int c, size_t n);
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const char* strchr(const char* s, int c);
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char* strchr( char* s, int c);
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size_t strcspn(const char* s1, const char* s2);
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const char* strpbrk(const char* s1, const char* s2);
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char* strpbrk( char* s1, const char* s2);
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const char* strrchr(const char* s, int c);
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char* strrchr( char* s, int c);
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size_t strspn(const char* s1, const char* s2);
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const char* strstr(const char* s1, const char* s2);
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char* strstr( char* s1, const char* s2);
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char* strtok(char* restrict s1, const char* restrict s2);
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void* memset(void* s, int c, size_t n);
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char* strerror(int errnum);
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size_t strlen(const char* s);
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} // std
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*/
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#include <__config>
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#include <string.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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using ::size_t;
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using ::memcpy;
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using ::memmove;
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using ::strcpy;
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using ::strncpy;
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using ::strcat;
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using ::strncat;
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using ::memcmp;
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using ::strcmp;
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using ::strncmp;
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using ::strcoll;
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using ::strxfrm;
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using ::memchr;
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using ::strchr;
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using ::strcspn;
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using ::strpbrk;
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using ::strrchr;
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using ::strspn;
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using ::strstr;
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// MSVCRT, GNU libc and its derivates already have the correct prototype in <string.h> #ifdef __cplusplus
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#if !defined(__GLIBC__) && !defined(_LIBCPP_MSVCRT) && !defined(__sun__) && !defined(_STRING_H_CPLUSPLUS_98_CONFORMANCE_)
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inline _LIBCPP_INLINE_VISIBILITY char* strchr( char* __s, int __c) {return ::strchr(__s, __c);}
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inline _LIBCPP_INLINE_VISIBILITY char* strpbrk( char* __s1, const char* __s2) {return ::strpbrk(__s1, __s2);}
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inline _LIBCPP_INLINE_VISIBILITY char* strrchr( char* __s, int __c) {return ::strrchr(__s, __c);}
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inline _LIBCPP_INLINE_VISIBILITY void* memchr( void* __s, int __c, size_t __n) {return ::memchr(__s, __c, __n);}
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inline _LIBCPP_INLINE_VISIBILITY char* strstr( char* __s1, const char* __s2) {return ::strstr(__s1, __s2);}
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#endif
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#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
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using ::strtok;
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#endif
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using ::memset;
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using ::strerror;
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using ::strlen;
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_CSTRING
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