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66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
//===- SystemUtils.h - Utilities to do low-level system stuff ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains functions used to do a variety of low-level, often
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// system-specific, tasks.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SYSTEMUTILS_H
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#define SYSTEMUTILS_H
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#include <string>
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namespace llvm {
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/// isExecutableFile - This function returns true if the filename specified
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/// exists and is executable.
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///
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bool isExecutableFile(const std::string &ExeFileName);
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/// isStandardOutAConsole - Return true if we can tell that the standard output
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/// stream goes to a terminal window or console.
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bool isStandardOutAConsole();
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/// FindExecutable - Find a named executable, giving the argv[0] of program
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/// being executed. This allows us to find another LLVM tool if it is built into
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/// the same directory, but that directory is neither the current directory, nor
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/// in the PATH. If the executable cannot be found, return an empty string.
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///
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std::string FindExecutable(const std::string &ExeName,
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const std::string &ProgramPath);
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/// RunProgramWithTimeout - This function executes the specified program, with
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/// the specified null-terminated argument array, with the stdin/out/err fd's
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/// redirected, with a timeout specified by the last argument. This terminates
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/// the calling program if there is an error executing the specified program.
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/// It returns the return value of the program, or -1 if a timeout is detected.
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///
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int RunProgramWithTimeout(const std::string &ProgramPath, const char **Args,
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const std::string &StdInFile = "",
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const std::string &StdOutFile = "",
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const std::string &StdErrFile = "",
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unsigned NumSeconds = 0);
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/// ExecWait - Execute a program with the given arguments and environment and
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/// wait for it to terminate.
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///
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int ExecWait (const char * const argv[], const char * const envp[]);
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/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute
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/// permissions. This is typically used for JIT applications where we want
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/// to emit code to the memory then jump to it. Getting this type of memory
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/// is very OS specific.
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///
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void *AllocateRWXMemory(unsigned NumBytes);
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} // End llvm namespace
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#endif
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