lib/Support/Program.cpp

   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, StringRef Program, const char **args,
  26                     const char **env, const StringRef **Redirects,
  27                     unsigned memoryLimit, std::string *ErrMsg);
  28
  29 static int Wait(void *&Data, StringRef Program, unsigned secondsToWait,
  30                 std::string *ErrMsg);
  31
  32 int sys::ExecuteAndWait(StringRef Program, const char **args, const char **envp,
  33                         const StringRef **redirects, unsigned secondsToWait,
  34                         unsigned memoryLimit, std::string *ErrMsg,
  35                         bool *ExecutionFailed) {
  36   void *Data = 0;
  37   if (Execute(&Data, Program, args, envp, redirects, memoryLimit, ErrMsg)) {
  38     if (ExecutionFailed) *ExecutionFailed = false;
  39     return Wait(Data, Program, secondsToWait, ErrMsg);
  40   }
  41   if (ExecutionFailed) *ExecutionFailed = true;
  42   return -1;
  43 }
  44
  45 void sys::ExecuteNoWait(StringRef Program, const char **args, const char **envp,
  46                         const StringRef **redirects, unsigned memoryLimit,
  47                         std::string *ErrMsg) {
  48   Execute(/*Data*/ 0, Program, args, envp, redirects, memoryLimit, ErrMsg);
  49 }
  50
  51 // Include the platform-specific parts of this class.
  52 #ifdef LLVM_ON_UNIX
  53 #include "Unix/Program.inc"
  54 #endif
  55 #ifdef LLVM_ON_WIN32
  56 #include "Windows/Program.inc"
  57 #endif