NAME 
io/io_passdown.c - IO layer handling
DESCRIPTION
This is a set of helper functions which search for the first implementation of a function in the layer-stack, call it with the appropriate arguments and return the value returned.
Functions
ParrotIO *PIO_open_down(theINTERP, ParrotIOLayer *layer, const char *name, INTVAL flags)- Looks for the implementation of
Openand calls it if found, returning its return value. - Returns
NULLif no implementation is found. ParrotIO *PIO_open_async_down(theINTERP, ParrotIOLayer *layer, const char *name, const char *mode, DummyCodeRef *dummy)- Looks for the implementation of
Open_ASyncand calls it if found, returning its return value. - Returns
NULLif no implementation is found. ParrotIO *PIO_fdopen_down(theINTERP, ParrotIOLayer *layer, PIOHANDLE fd, INTVAL flags)- Looks for the implementation of
FDOpenand calls it if found, returning its return value. - Returns
NULLif no implementation is found. INTVAL PIO_close_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io)- Looks for the implementation of
Closeand calls it if found, returning its return value. - Returns
-1if no implementation is found. size_t PIO_write_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING *)- Looks for the implementation of
Writeand calls it if found, returning its return value. - Returns
0if no implementation is found. size_t PIO_write_async_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING *s, DummyCodeRef *dummy)- Looks for the implementation of
WriteASyncand calls it if found, returning its return value. - Returns
0if no implementation is found. size_t PIO_read_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, void *buf, size_t len)- Looks for the implementation of
Readand calls it if found, returning its return value. - Returns
0if no implementation is found. size_t PIO_read_async_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING ** buf, DummyCodeRef *dummy)- Looks for the implementation of
Read_ASyncand calls it if found, returning its return value. - Returns
0if no implementation is found. INTVAL PIO_flush_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io)- Looks for the implementation of
Flushand calls it if found, returning its return value. - Returns
0if no implementation is found. PIOOFF_T PIO_seek_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, PIOOFF_T offset, INTVAL whence)- Looks for the implementation of
Seekand calls it if found, returning its return value. - Returns
-1if no implementation is found. PIOOFF_T PIO_tell_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io)- Looks for the implementation of
Telland calls it if found, returning its return value. - Returns
0if no implementation is found. INTVAL PIO_setbuf_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, size_t bufsize)- Looks for the implementation of
SetBufand calls it if found, returning its return value. - Returns
-1if no implementation is found. INTVAL PIO_setlinebuf_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io)- Looks for the implementation of
SetLineBufand calls it if found, returning its return value. - Returns
-1if no implementation is found. INTVAL PIO_eof_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io)- Looks for the implementation of
Eofand calls it if found, returning its return value. - Returns
-1if no implementation is found. INTVAL PIO_poll_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, INTVAL which, INTVAL sec, INTVAL usec)- Looks for the implementation of
Polland calls it if found, returning its return value. - Returns
-1if no implementation is found. ParrotIO *PIO_socket_down(theINTERP, ParrotIOLayer *layer, INTVAL fam, INTVAL type, INTVAL proto)- Looks for the implementation of
Socketand calls it if found, returning its return value. - Returns
NULLif no implementation is found. INTVAL PIO_recv_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING **buf)- Looks for the implementation of
Recvand calls it if found, returning its return value. - Returns
-1if no implementation is found. INTVAL PIO_send_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING *buf)- Looks for the implementation of
Sendand calls it if found, returning its return value. - Returns
-1if no implementation is found. INTVAL PIO_connect_down(theINTERP, ParrotIOLayer *layer, ParrotIO *io, STRING *address)- Looks for the implementation of
Connectand calls it if found, returning its return value. - Returns
-1if no implementation is found.
SEE ALSO
io/io_buf.c, io/io_passdown.c, io/io_stdio.c, io/io_unix.c, io/io_win32.c, io/io.c, io/io_private.h.
HISTORY
Initially written by Juergen Boemmels
Some ideas and goals from Perl5.7 and Nick Ing-Simmons' work.
