+/*
+ * Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the same terms as Perl itself.
+ */
+
#include "EXTERN.h"
#define PERLIO_NOT_STDIO 1
#include "perl.h"
#include "XSUB.h"
-
+#include "poll.h"
#ifdef I_UNISTD
# include <unistd.h>
#endif
-#ifdef I_FCNTL
+#if defined(I_FCNTL) || defined(HAS_FCNTL)
# include <fcntl.h>
#endif
typedef FILE * OutputStream;
#endif
+#include "patchlevel.h"
+
+#if (PATCHLEVEL < 3) || ((PATCHLEVEL == 3) && (SUBVERSION < 22))
+ /* before 5.003_22 */
+# define MY_start_subparse(fmt,flags) start_subparse()
+#else
+# if (PATCHLEVEL == 3) && (SUBVERSION == 22)
+ /* 5.003_22 */
+# define MY_start_subparse(fmt,flags) start_subparse(flags)
+# else
+ /* 5.003_23 onwards */
+# define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
+# endif
+#endif
+
+#ifndef gv_stashpvn
+#define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
+#endif
+
static int
not_here(char *s)
{
return -1;
}
-static bool
-constant(char *name, IV *pval)
-{
- switch (*name) {
- case '_':
- if (strEQ(name, "_IOFBF"))
-#ifdef _IOFBF
- { *pval = _IOFBF; return TRUE; }
-#else
- return FALSE;
-#endif
- if (strEQ(name, "_IOLBF"))
-#ifdef _IOLBF
- { *pval = _IOLBF; return TRUE; }
-#else
- return FALSE;
-#endif
- if (strEQ(name, "_IONBF"))
-#ifdef _IONBF
- { *pval = _IONBF; return TRUE; }
-#else
- return FALSE;
+
+#ifndef PerlIO
+#define PerlIO_fileno(f) fileno(f)
#endif
- break;
- case 'S':
- if (strEQ(name, "SEEK_SET"))
-#ifdef SEEK_SET
- { *pval = SEEK_SET; return TRUE; }
+
+static int
+io_blocking(InputStream f, int block)
+{
+ int RETVAL;
+ if(!f) {
+ errno = EBADF;
+ return -1;
+ }
+#if defined(HAS_FCNTL)
+ RETVAL = fcntl(PerlIO_fileno(f), F_GETFL, 0);
+ if (RETVAL >= 0) {
+ int mode = RETVAL;
+#ifdef O_NONBLOCK
+ /* POSIX style */
+#if defined(O_NDELAY) && O_NDELAY != O_NONBLOCK
+ /* Ooops has O_NDELAY too - make sure we don't
+ * get SysV behaviour by mistake
+ */
+ RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
+
+ if ((mode & O_NDELAY) || ((block == 0) && !(mode & O_NONBLOCK))) {
+ int ret;
+ mode = (mode & ~O_NDELAY) | O_NONBLOCK;
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
+ else if ((mode & O_NDELAY) || ((block > 0) && (mode & O_NONBLOCK))) {
+ int ret;
+ mode &= ~(O_NONBLOCK | O_NDELAY);
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
#else
- return FALSE;
-#endif
- if (strEQ(name, "SEEK_CUR"))
-#ifdef SEEK_CUR
- { *pval = SEEK_CUR; return TRUE; }
+ /* Standard POSIX */
+ RETVAL = RETVAL & O_NONBLOCK ? 0 : 1;
+
+ if ((block == 0) && !(mode & O_NONBLOCK)) {
+ int ret;
+ mode |= O_NONBLOCK;
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
+ else if ((block > 0) && (mode & O_NONBLOCK)) {
+ int ret;
+ mode &= ~O_NONBLOCK;
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
+#endif
#else
- return FALSE;
+ /* Not POSIX - better have O_NDELAY or we can't cope.
+ * for BSD-ish machines this is an acceptable alternative
+ * for SysV we can't tell "would block" from EOF but that is
+ * the way SysV is...
+ */
+ RETVAL = RETVAL & O_NDELAY ? 0 : 1;
+
+ if ((block == 0) && !(mode & O_NDELAY)) {
+ int ret;
+ mode |= O_NDELAY;
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
+ else if ((block > 0) && (mode & O_NDELAY)) {
+ int ret;
+ mode &= ~O_NDELAY;
+ ret = fcntl(PerlIO_fileno(f),F_SETFL,mode);
+ if(ret < 0)
+ RETVAL = ret;
+ }
#endif
- if (strEQ(name, "SEEK_END"))
-#ifdef SEEK_END
- { *pval = SEEK_END; return TRUE; }
+ }
+ return RETVAL;
#else
- return FALSE;
+ return -1;
#endif
- break;
- }
-
- return FALSE;
}
-
MODULE = IO PACKAGE = IO::Seekable PREFIX = f
SV *
ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
}
else {
- ST(0) = &sv_undef;
+ ST(0) = &PL_sv_undef;
errno = EINVAL;
}
InputStream handle
SV * pos
CODE:
- char *p;
- if (handle && (p = SvPVx(pos, na)) && na == sizeof(Fpos_t))
+ char *p;
+ STRLEN len;
+ if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
#ifdef PerlIO
RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
#else
if (do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) {
ST(0) = sv_2mortal(newRV((SV*)gv));
sv_bless(ST(0), gv_stashpv(packname, TRUE));
- SvREFCNT_dec(gv); /* undo increment in newRV() */
+ SvREFCNT_dec(gv); /* undo increment in newRV() */
}
else {
- ST(0) = &sv_undef;
+ ST(0) = &PL_sv_undef;
SvREFCNT_dec(gv);
}
+MODULE = IO PACKAGE = IO::Poll
+
+void
+_poll(timeout,...)
+ int timeout;
+PPCODE:
+{
+#ifdef HAS_POLL
+ int nfd = (items - 1) / 2;
+ SV *tmpsv = NEWSV(999,nfd * sizeof(struct pollfd));
+ struct pollfd *fds = (struct pollfd *)SvPVX(tmpsv);
+ int i,j,ret;
+ for(i=1, j=0 ; j < nfd ; j++) {
+ fds[j].fd = SvIV(ST(i));
+ i++;
+ fds[j].events = SvIV(ST(i));
+ i++;
+ fds[j].revents = 0;
+ }
+ if((ret = poll(fds,nfd,timeout)) >= 0) {
+ for(i=1, j=0 ; j < nfd ; j++) {
+ sv_setiv(ST(i), fds[j].fd); i++;
+ sv_setiv(ST(i), fds[j].revents); i++;
+ }
+ }
+ SvREFCNT_dec(tmpsv);
+ XSRETURN_IV(ret);
+#else
+ not_here("IO::Poll::poll");
+#endif
+}
+
+MODULE = IO PACKAGE = IO::Handle PREFIX = io_
+
+void
+io_blocking(handle,blk=-1)
+ InputStream handle
+ int blk
+PROTOTYPE: $;$
+CODE:
+{
+ int ret = io_blocking(handle, items == 1 ? -1 : blk ? 1 : 0);
+ if(ret >= 0)
+ XSRETURN_IV(ret);
+ else
+ XSRETURN_UNDEF;
+}
+
MODULE = IO PACKAGE = IO::Handle PREFIX = f
-SV *
-constant(name)
- char * name
- CODE:
- IV i;
- if (constant(name, &i))
- ST(0) = sv_2mortal(newSViv(i));
- else
- ST(0) = &sv_undef;
int
ungetc(handle, c)
RETVAL
+SysRet
+fsync(handle)
+ OutputStream handle
+ CODE:
+#ifdef HAS_FSYNC
+ if(handle)
+ RETVAL = fsync(PerlIO_fileno(handle));
+ else {
+ RETVAL = -1;
+ errno = EINVAL;
+ }
+#else
+ RETVAL = (SysRet) not_here("IO::Handle::sync");
+#endif
+ OUTPUT:
+ RETVAL
+
+
+BOOT:
+{
+ HV *stash;
+ /*
+ * constant subs for IO::Poll
+ */
+ stash = gv_stashpvn("IO::Poll", 8, TRUE);
+#ifdef POLLIN
+ newCONSTSUB(stash,"POLLIN",newSViv(POLLIN));
+#endif
+#ifdef POLLPRI
+ newCONSTSUB(stash,"POLLPRI", newSViv(POLLPRI));
+#endif
+#ifdef POLLOUT
+ newCONSTSUB(stash,"POLLOUT", newSViv(POLLOUT));
+#endif
+#ifdef POLLRDNORM
+ newCONSTSUB(stash,"POLLRDNORM", newSViv(POLLRDNORM));
+#endif
+#ifdef POLLWRNORM
+ newCONSTSUB(stash,"POLLWRNORM", newSViv(POLLWRNORM));
+#endif
+#ifdef POLLRDBAND
+ newCONSTSUB(stash,"POLLRDBAND", newSViv(POLLRDBAND));
+#endif
+#ifdef POLLWRBAND
+ newCONSTSUB(stash,"POLLWRBAND", newSViv(POLLWRBAND));
+#endif
+#ifdef POLLNORM
+ newCONSTSUB(stash,"POLLNORM", newSViv(POLLNORM));
+#endif
+#ifdef POLLERR
+ newCONSTSUB(stash,"POLLERR", newSViv(POLLERR));
+#endif
+#ifdef POLLHUP
+ newCONSTSUB(stash,"POLLHUP", newSViv(POLLHUP));
+#endif
+#ifdef POLLNVAL
+ newCONSTSUB(stash,"POLLNVAL", newSViv(POLLNVAL));
+#endif
+ /*
+ * constant subs for IO::Handle
+ */
+ stash = gv_stashpvn("IO::Handle", 10, TRUE);
+#ifdef _IOFBF
+ newCONSTSUB(stash,"_IOFBF", newSViv(_IOFBF));
+#endif
+#ifdef _IOLBF
+ newCONSTSUB(stash,"_IOLBF", newSViv(_IOLBF));
+#endif
+#ifdef _IONBF
+ newCONSTSUB(stash,"_IONBF", newSViv(_IONBF));
+#endif
+#ifdef SEEK_SET
+ newCONSTSUB(stash,"SEEK_SET", newSViv(SEEK_SET));
+#endif
+#ifdef SEEK_CUR
+ newCONSTSUB(stash,"SEEK_CUR", newSViv(SEEK_CUR));
+#endif
+#ifdef SEEK_END
+ newCONSTSUB(stash,"SEEK_END", newSViv(SEEK_END));
+#endif
+ /*
+ * constant subs for IO
+ */
+ stash = gv_stashpvn("IO", 2, TRUE);
+#ifdef EINPROGRESS
+ newCONSTSUB(stash,"EINPROGRESS", newSViv(EINPROGRESS));
+#endif
+}
https://perl5.git.perl.org / perl5.git / blobdiff