1 //===- zOSSupport.h - Common z/OS Include File ------------------*- C++ -*-===//
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 defines z/OS implementations for common functions.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #ifndef LLVM_SUPPORT_ZOSSUPPORT_H
14 #define LLVM_SUPPORT_ZOSSUPPORT_H
15
16 #ifdef __MVS__
17 #include <sys/resource.h>
18 #include <sys/wait.h>
19
20 // z/OS Unix System Services does not have strsignal() support, so the
21 // strsignal() function is implemented here.
strsignal(int sig)22 inline char *strsignal(int sig) {
23 static char msg[256];
24 sprintf(msg, "%d", sig);
25 return msg;
26 }
27
28 // z/OS Unix System Services does not have wait4() support, so the wait4
29 // function is implemented here.
wait4(pid_t pid,int * wstatus,int options,struct rusage * rusage)30 inline pid_t wait4(pid_t pid, int *wstatus, int options,
31 struct rusage *rusage) {
32 pid_t Result = waitpid(pid, wstatus, options);
33 int GetrusageRC = getrusage(RUSAGE_CHILDREN, rusage);
34 assert(!GetrusageRC && "Must have valid measure of the resources!");
35 return Result;
36 }
37
38 // z/OS Unix System Services does not have strnlen() support, so the strnlen()
39 // function is implemented here.
strnlen(const char * S,std::size_t MaxLen)40 inline std::size_t strnlen(const char *S, std::size_t MaxLen) {
41 const char *PtrToNullChar =
42 static_cast<const char *>(std::memchr(S, '\0', MaxLen));
43 return PtrToNullChar ? PtrToNullChar - S : MaxLen;
44 }
45
46 #endif
47 #endif
48