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7eae81d4da
Incorporate the abilities of RunPRogramWithTimeout into sys::Program::ExecuteAndWait so that redirection and a timeout are optionally supported. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19039 91177308-0d34-0410-b5e6-96231b3b80d8
86 lines
3.8 KiB
C++
86 lines
3.8 KiB
C++
//===- llvm/System/Program.h ------------------------------------*- 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 Reid Spencer and is distributed under the
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// 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 declares the llvm::sys::Program class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SYSTEM_PROGRAM_H
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#define LLVM_SYSTEM_PROGRAM_H
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#include "llvm/System/Path.h"
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#include <vector>
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namespace llvm {
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namespace sys {
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/// This class provides an abstraction for programs that are executable by the
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/// operating system. It provides a platform generic way to find executable
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/// programs from the path and to execute them in various ways. The sys::Path
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/// class is used to specify the location of the Program.
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/// @since 1.4
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/// @brief An abstraction for finding and executing programs.
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class Program {
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/// @name Methods
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/// @{
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public:
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/// This static constructor (factory) will attempt to locate a program in
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/// the operating system's file system using some pre-determined set of
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/// locations to search (e.g. the PATH on Unix).
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/// @returns A Path object initialized to the path of the program or a
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/// Path object that is empty (invalid) if the program could not be found.
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/// @throws nothing
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/// @brief Construct a Program by finding it by name.
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static Path FindProgramByName(const std::string& name);
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/// This function executes the program using the \p arguments provided and
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/// waits for the program to exit. This function will block the current
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/// program until the invoked program exits. The invoked program will
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/// inherit the stdin, stdout, and stderr file descriptors, the
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/// environment and other configuration settings of the invoking program.
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/// If Path::executable() does not return true when this function is
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/// called then a std::string is thrown.
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/// @param path A sys::Path object providing the path of the program to be
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/// executed. It is presumed this is the result of the FindProgramByName
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/// method.
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/// @returns an integer result code indicating the status of the program.
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/// @throws std::string on a variety of error conditions or if the invoked
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/// program aborted abnormally.
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/// @see FindProgrambyName
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/// @brief Executes the program with the given set of \p args.
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static int ExecuteAndWait(
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const Path& path, ///< The path to the program to execute
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const char** args,
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///< A vector of strings that are passed to the program.
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///< The first element should be the name of the program. The list
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///< *must* be terminated by a null char* entry.
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const char ** env = 0,
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///< An optional vector of strings to use for the program's
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///< environment. If not provided, the current program's environment
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///< will be used.
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const sys::Path** redirects = 0,
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///< An optional array of pointers to Paths. If the array is null,
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///< no redirection is done. The array should have a size of at least
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///< three. If the pointer in the array are not null, then the
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///< inferior process's stdin(0), stdout(1), and stderr(2) will be
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///< redirected to the corresponding Paths.
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unsigned secondsToWait = 0
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///< If non-zero, this specifies the amount of time to wait for the
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///< child process to exit. If the time expires, the child is killed
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///< and this call returns. If zero, this function will wait until
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///< the child finishes or forever if it doesn't.
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);
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};
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}
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}
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// vim: sw=2
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#endif
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