1//===-- Program.cpp - Implement OS Program Concept --------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  This file implements the operating system Program concept.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Support/Program.h"
15#include "llvm/ADT/StringRef.h"
16#include "llvm/Config/config.h"
17#include <system_error>
18using namespace llvm;
19using namespace sys;
20
21//===----------------------------------------------------------------------===//
22//=== WARNING: Implementation here must contain only TRULY operating system
23//===          independent code.
24//===----------------------------------------------------------------------===//
25
26static bool Execute(ProcessInfo &PI, StringRef Program, const char **args,
27                    const char **env, const StringRef **Redirects,
28                    unsigned memoryLimit, std::string *ErrMsg);
29
30int sys::ExecuteAndWait(StringRef Program, const char **args, const char **envp,
31                        const StringRef **redirects, unsigned secondsToWait,
32                        unsigned memoryLimit, std::string *ErrMsg,
33                        bool *ExecutionFailed) {
34  ProcessInfo PI;
35  if (Execute(PI, Program, args, envp, redirects, memoryLimit, ErrMsg)) {
36    if (ExecutionFailed)
37      *ExecutionFailed = false;
38    ProcessInfo Result = Wait(
39        PI, secondsToWait, /*WaitUntilTerminates=*/secondsToWait == 0, ErrMsg);
40    return Result.ReturnCode;
41  }
42
43  if (ExecutionFailed)
44    *ExecutionFailed = true;
45
46  return -1;
47}
48
49ProcessInfo sys::ExecuteNoWait(StringRef Program, const char **args,
50                               const char **envp, const StringRef **redirects,
51                               unsigned memoryLimit, std::string *ErrMsg,
52                               bool *ExecutionFailed) {
53  ProcessInfo PI;
54  if (ExecutionFailed)
55    *ExecutionFailed = false;
56  if (!Execute(PI, Program, args, envp, redirects, memoryLimit, ErrMsg))
57    if (ExecutionFailed)
58      *ExecutionFailed = true;
59
60  return PI;
61}
62
63// Include the platform-specific parts of this class.
64#ifdef LLVM_ON_UNIX
65#include "Unix/Program.inc"
66#endif
67#ifdef LLVM_ON_WIN32
68#include "Windows/Program.inc"
69#endif
70