//===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This file contains functions used to do a variety of low-level, often
//===----------------------------------------------------------------------===//
#include "llvm/Support/SystemUtils.h"
-#include "llvm/System/Program.h"
-#include "llvm/Config/fcntl.h"
-#include "llvm/Config/sys/wait.h"
-#include <algorithm>
-#include <cerrno>
-#include <cstdlib>
-#include <fstream>
-#include <iostream>
-#include <signal.h>
-
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-/// isStandardOutAConsole - Return true if we can tell that the standard output
-/// stream goes to a terminal window or console.
-bool llvm::isStandardOutAConsole() {
-#if HAVE_ISATTY
- return isatty(1);
-#endif
- // If we don't have isatty, just return false.
- return false;
-}
-
-
-/// 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.
-///
-#undef FindExecutable // needed on windows :(
-sys::Path llvm::FindExecutable(const std::string &ExeName,
- const std::string &ProgramPath) {
- // First check the directory that the calling program is in. We can do this
- // if ProgramPath contains at least one / character, indicating that it is a
- // relative path to bugpoint itself.
- //
- sys::Path Result ( ProgramPath );
- Result.elideFile();
-
- if (!Result.isEmpty()) {
- Result.appendFile(ExeName);
- if (Result.executable()) return Result;
- }
-
- return sys::Program::FindProgramByName(ExeName);
-}
-
-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
-}
-
-static bool Timeout = false;
-static void TimeOutHandler(int Sig) {
- Timeout = true;
-}
-
-/// 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 by the last argument. 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 llvm::RunProgramWithTimeout(const std::string &ProgramPath,
- const char **Args,
- const std::string &StdInFile,
- const std::string &StdOutFile,
- const std::string &StdErrFile,
- unsigned NumSeconds) {
-#ifdef HAVE_SYS_WAIT_H
- 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);
- if (StdOutFile != StdErrFile)
- RedirectFD(StdErrFile, 2);
- else
- dup2(1, 2);
-
- execv(ProgramPath.c_str(), (char *const *)Args);
- std::cerr << "Error executing program: '" << ProgramPath;
- for (; *Args; ++Args)
- std::cerr << " " << *Args;
- std::cerr << "'\n";
- exit(1);
-
- default: break;
- }
-
- // Make sure all output has been written while waiting
- std::cout << std::flush;
-
- // Install a timeout handler.
- Timeout = false;
- struct sigaction Act, Old;
- Act.sa_sigaction = 0;
- Act.sa_handler = TimeOutHandler;
- sigemptyset(&Act.sa_mask);
- Act.sa_flags = 0;
- sigaction(SIGALRM, &Act, &Old);
-
- // Set the timeout if one is set.
- if (NumSeconds)
- alarm(NumSeconds);
-
- int Status;
- while (wait(&Status) != Child)
- if (errno == EINTR) {
- if (Timeout) {
- // Kill the child.
- kill(Child, SIGKILL);
-
- if (wait(&Status) != Child)
- std::cerr << "Something funny happened waiting for the child!\n";
-
- alarm(0);
- sigaction(SIGALRM, &Old, 0);
- return -1; // Timeout detected
- } else {
- std::cerr << "Error waiting for child process!\n";
- exit(1);
- }
+bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
+ bool print_warning) {
+ if (stream_to_check.is_displayed()) {
+ if (print_warning) {
+ errs() << "WARNING: You're attempting to print out a bitcode file.\n"
+ "This is inadvisable as it may cause display problems. If\n"
+ "you REALLY want to taste LLVM bitcode first-hand, you\n"
+ "can force output with the `-f' option.\n\n";
}
-
- alarm(0);
- sigaction(SIGALRM, &Old, 0);
- return Status;
-
-#else
- std::cerr << "RunProgramWithTimeout not implemented on this platform!\n";
- return -1;
-#endif
+ return true;
+ }
+ return false;
}
projects / oota-llvm.git / blobdiff