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 header file implements the operating system Program concept. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Support/Program.h" 15 #include "llvm/Config/config.h" 16 #include "llvm/Support/system_error.h" 17 using namespace llvm; 18 using namespace sys; 19 20 //===----------------------------------------------------------------------===// 21 //=== WARNING: Implementation here must contain only TRULY operating system 22 //=== independent code. 23 //===----------------------------------------------------------------------===// 24 25 static bool Execute(void **Data, const Path &path, const char **args, 26 const char **env, const sys::Path **redirects, 27 unsigned memoryLimit, std::string *ErrMsg); 28 29 static int Wait(void *&Data, const Path &path, unsigned secondsToWait, 30 std::string *ErrMsg); 31 32 int sys::ExecuteAndWait(StringRef path, const char **args, const char **env, 33 const StringRef **redirects, unsigned secondsToWait, 34 unsigned memoryLimit, std::string *ErrMsg, 35 bool *ExecutionFailed) { 36 Path P(path); 37 if (!redirects) 38 return ExecuteAndWait(P, args, env, 0, secondsToWait, memoryLimit, ErrMsg, 39 ExecutionFailed); 40 Path IO[3]; 41 const Path *IOP[3]; 42 for (int I = 0; I < 3; ++I) { 43 if (redirects[I]) { 44 IO[I] = *redirects[I]; 45 IOP[I] = &IO[I]; 46 } else { 47 IOP[I] = 0; 48 } 49 } 50 51 return ExecuteAndWait(P, args, env, IOP, secondsToWait, memoryLimit, ErrMsg, 52 ExecutionFailed); 53 } 54 55 int sys::ExecuteAndWait(const Path &path, const char **args, const char **envp, 56 const Path **redirects, unsigned secondsToWait, 57 unsigned memoryLimit, std::string *ErrMsg, 58 bool *ExecutionFailed) { 59 void *Data = 0; 60 if (Execute(&Data, path, args, envp, redirects, memoryLimit, ErrMsg)) { 61 if (ExecutionFailed) *ExecutionFailed = false; 62 return Wait(Data, path, secondsToWait, ErrMsg); 63 } 64 if (ExecutionFailed) *ExecutionFailed = true; 65 return -1; 66 } 67 68 void sys::ExecuteNoWait(const Path &path, const char **args, const char **envp, 69 const Path **redirects, unsigned memoryLimit, 70 std::string *ErrMsg) { 71 Execute(/*Data*/ 0, path, args, envp, redirects, memoryLimit, ErrMsg); 72 } 73 74 // Include the platform-specific parts of this class. 75 #ifdef LLVM_ON_UNIX 76 #include "Unix/Program.inc" 77 #endif 78 #ifdef LLVM_ON_WIN32 79 #include "Windows/Program.inc" 80 #endif 81