Move support/lib into lib/Support

Move support/tools into utils


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8878 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 266 deletions

diff --git a/support/lib/Support/SystemUtils.cpp b/support/lib/Support/SystemUtils.cpp
deleted file mode 100644
index e198c7ec06..0000000000
--- a/support/lib/Support/SystemUtils.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-//===- SystemUtils.h - Utilities to do low-level system stuff --*- C++ -*--===//
-//
-// This file contains functions used to do a variety of low-level, often
-// system-specific, tasks.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Support/SystemUtils.h"
-#include <algorithm>
-#include <fstream>
-#include <iostream>
-#include <cstdlib>
-#include "Config/sys/types.h"
-#include "Config/sys/stat.h"
-#include "Config/fcntl.h"
-#include "Config/sys/wait.h"
-#include "Config/unistd.h"
-#include "Config/errno.h"
-
-/// isExecutableFile - This function returns true if the filename specified
-/// exists and is executable.
-///
-bool isExecutableFile(const std::string &ExeFileName) {
-  struct stat Buf;
-  if (stat(ExeFileName.c_str(), &Buf))
-    return false;  // Must not be executable!
-
-  if (!(Buf.st_mode & S_IFREG))
-    return false;                    // Not a regular file?
-
-  if (Buf.st_uid == getuid())        // Owner of file?
-    return Buf.st_mode & S_IXUSR;
-  else if (Buf.st_gid == getgid())   // In group of file?
-    return Buf.st_mode & S_IXGRP;
-  else                               // Unrelated to file?
-    return Buf.st_mode & S_IXOTH;
-}
-
-/// FindExecutable - Find a named executable, giving the argv[0] of program
-/// being executed. This allows us to find another LLVM tool if it is built
-/// into the same directory, but that directory is neither the current
-/// directory, nor in the PATH.  If the executable cannot be found, return an
-/// empty string.
-/// 
-std::string FindExecutable(const std::string &ExeName,
-                           const std::string &ProgramPath) {
-  // First check the directory that bugpoint is in.  We can do this if
-  // BugPointPath contains at least one / character, indicating that it is a
-  // relative path to bugpoint itself.
-  //
-  std::string Result = ProgramPath;
-  while (!Result.empty() && Result[Result.size()-1] != '/')
-    Result.erase(Result.size()-1, 1);
-
-  if (!Result.empty()) {
-    Result += ExeName;
-    if (isExecutableFile(Result)) return Result; // Found it?
-  }
-
-  // Okay, if the path to the program didn't tell us anything, try using the
-  // PATH environment variable.
-  const char *PathStr = getenv("PATH");
-  if (PathStr == 0) return "";
-
-  // Now we have a colon separated list of directories to search... try them...
-  unsigned PathLen = strlen(PathStr);
-  while (PathLen) {
-    // Find the first colon...
-    const char *Colon = std::find(PathStr, PathStr+PathLen, ':');
-    
-    // Check to see if this first directory contains the executable...
-    std::string FilePath = std::string(PathStr, Colon) + '/' + ExeName;
-    if (isExecutableFile(FilePath))
-      return FilePath;                    // Found the executable!
-   
-    // Nope it wasn't in this directory, check the next range!
-    PathLen -= Colon-PathStr;
-    PathStr = Colon;
-    while (*PathStr == ':') {   // Advance past colons
-      PathStr++;
-      PathLen--;
-    }
-  }
-
-  // If we fell out, we ran out of directories in PATH to search, return failure
-  return "";
-}
-
-static void RedirectFD(const std::string &File, int FD) {
-  if (File.empty()) return;  // Noop
-
-  // Open the file
-  int InFD = open(File.c_str(), FD == 0 ? O_RDONLY : O_WRONLY|O_CREAT, 0666);
-  if (InFD == -1) {
-    std::cerr << "Error opening file '" << File << "' for "
-              << (FD == 0 ? "input" : "output") << "!\n";
-    exit(1);
-  }
-
-  dup2(InFD, FD);   // Install it as the requested FD
-  close(InFD);      // Close the original FD
-}
-
-/// RunProgramWithTimeout - This function executes the specified program, with
-/// the specified null-terminated argument array, with the stdin/out/err fd's
-/// redirected, with a timeout specified on the command line.  This terminates
-/// the calling program if there is an error executing the specified program.
-/// It returns the return value of the program, or -1 if a timeout is detected.
-///
-int RunProgramWithTimeout(const std::string &ProgramPath, const char **Args,
-                          const std::string &StdInFile,
-                          const std::string &StdOutFile,
-                          const std::string &StdErrFile) {
-
-  // FIXME: install sigalarm handler here for timeout...
-
-  int Child = fork();
-  switch (Child) {
-  case -1:
-    std::cerr << "ERROR forking!\n";
-    exit(1);
-  case 0:               // Child
-    RedirectFD(StdInFile, 0);      // Redirect file descriptors...
-    RedirectFD(StdOutFile, 1);
-    RedirectFD(StdErrFile, 2);
-
-    execv(ProgramPath.c_str(), (char *const *)Args);
-    std::cerr << "Error executing program '" << ProgramPath;
-    for (; *Args; ++Args)
-      std::cerr << " " << *Args;
-    exit(1);
-
-  default: break;
-  }
-
-  // Make sure all output has been written while waiting
-  std::cout << std::flush;
-
-  int Status;
-  if (wait(&Status) != Child) {
-    if (errno == EINTR) {
-      static bool FirstTimeout = true;
-      if (FirstTimeout) {
-        std::cout <<
- "*** Program execution timed out!  This mechanism is designed to handle\n"
- "    programs stuck in infinite loops gracefully.  The -timeout option\n"
- "    can be used to change the timeout threshold or disable it completely\n"
- "    (with -timeout=0).  This message is only displayed once.\n";
-        FirstTimeout = false;
-      }
-      return -1;   // Timeout detected
-    }
-
-    std::cerr << "Error waiting for child process!\n";
-    exit(1);
-  }
-  return Status;
-}
-
-
-//
-// Function: ExecWait ()
-//
-// Description:
-//  This function executes a program with the specified arguments and
-//  environment.  It then waits for the progarm to termiante and then returns
-//  to the caller.
-//
-// Inputs:
-//  argv - The arguments to the program as an array of C strings.  The first
-//         argument should be the name of the program to execute, and the
-//         last argument should be a pointer to NULL.
-//
-//  envp - The environment passes to the program as an array of C strings in
-//         the form of "name=value" pairs.  The last element should be a
-//         pointer to NULL.
-//
-// Outputs:
-//  None.
-//
-// Return value:
-//  0 - No errors.
-//  1 - The program could not be executed.
-//  1 - The program returned a non-zero exit status.
-//  1 - The program terminated abnormally.
-//
-// Notes:
-//  The program will inherit the stdin, stdout, and stderr file descriptors
-//  as well as other various configuration settings (umask).
-//
-//  This function should not print anything to stdout/stderr on its own.  It is
-//  a generic library function.  The caller or executed program should report
-//  errors in the way it sees fit.
-//
-//  This function does not use $PATH to find programs.
-//
-int
-ExecWait (const char * const old_argv[], const char * const old_envp[])
-{
-  // Child process ID
-  register int child;
-
-  // Status from child process when it exits
-  int status;
- 
-  //
-  // Create local versions of the parameters that can be passed into execve()
-  // without creating const problems.
-  //
-  char ** const argv = (char ** const) old_argv;
-  char ** const envp = (char ** const) old_envp;
-
-  //
-  // Create a child process.
-  //
-  switch (child=fork())
-  {
-    //
-    // An error occured:  Return to the caller.
-    //
-    case -1:
-      return 1;
-      break;
-
-    //
-    // Child process: Execute the program.
-    //
-    case 0:
-      execve (argv[0], argv, envp);
-
-      //
-      // If the execve() failed, we should exit and let the parent pick up
-      // our non-zero exit status.
-      //
-      exit (1);
-      break;
-
-    //
-    // Parent process: Break out of the switch to do our processing.
-    //
-    default:
-      break;
-  }
-
-  //
-  // Parent process: Wait for the child process to termiante.
-  //
-  if ((wait (&status)) == -1)
-  {
-    return 1;
-  }
-
-  //
-  // If the program exited normally with a zero exit status, return success!
-  //
-  if (WIFEXITED (status) && (WEXITSTATUS(status) == 0))
-  {
-    return 0;
-  }
-
-  //
-  // Otherwise, return failure.
-  //
-  return 1;
-}
-