Am 10.02.2011 15:03, schrieb Artyom:
Probably it would be ok to provide some parameter on how to wait asynchronously:
typedef enum { wait_default, // using thread+waitpid per-process on POSIX OS wait_using_sigaction, // install signal handler wait_using_sigwaitinfo, // install signal handler wait_polling, // poll all waiting pids for end, when // requested - for example by user's signal // handler } wait_method_type;
void async_wait(pid ,method_type m = wait_default) #ifdef BOOST_POSIX void poll_handlers(); // check if child completed // called by user when receives sigchld endif
what about this solution (without error handling) on POSIX in one special worker-thread: sigset_t set; sigemptyset( & set), sigaddset( & set, SIGCHLD); // SIGTERM, SIGINT, SIGQUIT pthread_sigmask(SIG_BLOCK, & set, ...); int signo( 0); sigwait( set, & signo); switch ( signo) { case SIGCHLD: while (true) { int status( 0); pid_t child = waitpid( -1, % status, WUNTRACED|WCONTINUED); if ( -1 == child && ECHILD != child) throw runtime_error("waitpid() failed"); // select data/callabck associated with child // from internal storage } case: ... }; Oliver