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llvm-mirror/include/Support/SystemUtils.h
John Criswell e1ccc5a286 In ExecWait(), made the child process exit if it can't execve() the new
program.
Added the use of const (which compiles and is hopefully correct).
Added comments.

llvm-svn: 8585
2003-09-17 19:02:49 +00:00

46 lines
1.7 KiB
C++

//===- 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.
//
//===----------------------------------------------------------------------===//
#ifndef SYSTEMUTILS_H
#define SYSTEMUTILS_H
#include <string>
/// isExecutableFile - This function returns true if the filename specified
/// exists and is executable.
///
bool isExecutableFile(const std::string &ExeFileName);
/// 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);
/// 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 commandline. 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 = "");
///
/// Function: ExecWait()
///
/// Description:
/// Execute a program with the given arguments and environment and
/// wait for it to terminate.
///
int ExecWait (const char * const argv[], const char * const envp[]);
#endif