wiki:Component/ProcessWrapper

SocLib Components General Index

Component description

This component is a common utility component.

This creates a wrapper to a process. The wrapped process will be executed with the simulator, wrapping code may:

  • read stdout from wrapped process
  • poll stdout from wrapped process
  • write to wrapped process' stdin
  • send signals to wrapped process

Component usage

Object

soclib::common::ProcessWrapper *process;

Instanciation

    soclib::common::ProcessWrapper(
        const std::string &cmd,
        const std::vector<std::string> &argv );
cmd
The command to launch, it will be looked for in $PATH
argv
The argv in a standart unix style. argv[0] should look like cmd.

Usage

    std::vector<std::string> argv;
    argv.push_back("date");
    argv.push_back("+%s");
    soclib::common::ProcessWrapper process("date", argv);

    char buffer[128];
    process.read( buffer, 128 );
    std::cout << "Date is " << buffer << " seconds since EPOCH" << std::endl;
Last modified 14 years ago Last modified on Mar 7, 2008, 4:54:00 PM