Process Class Reference

A class for containing portable process related functions that help create portable code. Peocess wrapper class. More...

#include <process.h>

List of all members.

Public Types
typedef RETSIGTYPE(*	Trap )(int)
Static Public Member Functions
void	detach (void)
	Detach current process into a daemon, posix only.
Trap	setPosixSignal (int signo, Trap handler)
	Set a posix compliant signal handler.
Trap	setInterruptSignal (int signo, Trap handler)
	Set system call interuptable signal handler.
int	spawn (const char *exec, const char **argv)
	Spawn a process and wait for it's exit code.
const char *	getEnv (const char *name)
	Get system environment.
void	setEnv (const char *name, const char *value, bool overwrite)
	Set system environment in a standard manner.

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Detailed Description

A class for containing portable process related functions that help create portable code. Peocess wrapper class.

These are typically referenced thru Process::xxx static member functions. Many of these members are used both for win32 and posix systems although some may be platform specific.

Author:

David Sugar <dyfet@ostel.com>

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Member Typedef Documentation

typedef RETSIGTYPE(* Process::Trap)(int)

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Member Function Documentation

void Process::detach (  void   )  [static]

Detach current process into a daemon, posix only. Perhaps a similar method can be used for creating win32 "services"?

const char* Process::getEnv (  const char *  name  )  [static]

Get system environment. Returns: system environ symbol. Parameters: name  of symbol.

void Process::setEnv (  const char *  name, const char *  value, bool  overwrite )  [static]

Set system environment in a standard manner. Parameters: name  of environment symbol to set. value  of environment symbol. overwrite  true if replace existing symbol.

Trap Process::setInterruptSignal (  int  signo, Trap  handler )  [static]

Set system call interuptable signal handler. #return previous handler. Parameters: signo  signal no. handler  trap handler.

Trap Process::setPosixSignal (  int  signo, Trap  handler )  [static]

Set a posix compliant signal handler. Returns: previous handler. Parameters: signo  signal no. handler  trap handler.

int Process::spawn (  const char *  exec, const char **  argv )  [static]

Spawn a process and wait for it's exit code. In win32 this is done with the spawn system call. In posix, this is done with a fork, an execvp, and a waitpid. Warning: The implementation differences between posix and win32 systems may cause side effects. For instance, if you use atexit() and this spawn method, on posix systems the function set up with atexit() will be called when the parent process of the fork exits, which will not happen on Win32 systems. Returns: error code from process. Parameters: exec  name of executable. argv  list of command arguments.

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The documentation for this class was generated from the following file:

• process.h

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