integrate cfgperl changes#6174..6203 into mainline (first of several)

[p5sagit/p5-mst-13.2.git] / ext / IO / IO.xs

diff --git a/ext/IO/IO.xs b/ext/IO/IO.xs
index a434d08..1b79cfd 100644 (file)
--- a/ext/IO/IO.xs
+++ b/ext/IO/IO.xs
@@ -4,6 +4,7 @@
  * modify it under the same terms as Perl itself.
  */
 
+#define PERL_NO_GET_CONTEXT
 #include "EXTERN.h"
 #define PERLIO_NOT_STDIO 1
 #include "perl.h"
@@ -27,87 +28,26 @@ typedef FILE * InputStream;
 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
+#define MY_start_subparse(fmt,flags) start_subparse(fmt,flags)
 
 #ifndef gv_stashpvn
 #define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
 #endif
 
 static int
-not_here(s)
-char *s;
+not_here(char *s)
 {
     croak("%s not implemented on this architecture", s);
     return -1;
 }
 
-#ifndef newCONSTSUB
-/*
- * Define an XSUB that returns a constant scalar. The resulting structure is
- * identical to that created by the parser when it parses code like :
- *
- *    sub xyz () { 123 }
- *
- * This allows the constants from the XSUB to be inlined.
- *
- * !!! THIS SHOULD BE ADDED INTO THE CORE CODE !!!!
- *
- */
- 
-static void
-newCONSTSUB(stash,name,sv)
-    HV *stash;
-    char *name;
-    SV *sv;
-{
-#ifdef dTHR
-    dTHR;
-#endif
-    U32 oldhints = hints;
-    HV *old_cop_stash = curcop->cop_stash;
-    HV *old_curstash = curstash;
-    line_t oldline = curcop->cop_line;
-    curcop->cop_line = copline;
-
-    hints &= ~HINT_BLOCK_SCOPE;
-    if(stash)
-       curstash = curcop->cop_stash = stash;
-
-    newSUB(
-       MY_start_subparse(FALSE, 0),
-       newSVOP(OP_CONST, 0, newSVpv(name,0)),
-       newSVOP(OP_CONST, 0, &sv_no),   /* SvPV(&sv_no) == "" -- GMB */
-       newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv))
-    );
-
-    hints = oldhints;
-    curcop->cop_stash = old_cop_stash;
-    curstash = old_curstash;
-    curcop->cop_line = oldline;
-}
-#endif
 
 #ifndef PerlIO
 #define PerlIO_fileno(f) fileno(f)
 #endif
 
 static int
-io_blocking(f,block)
-InputStream f;
-int block;
+io_blocking(InputStream f, int block)
 {
     int RETVAL;
     if(!f) {
@@ -122,23 +62,28 @@ int block;
        /* 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;
+        * get SysV behaviour by mistake. */
+
+       /* E.g. In UNICOS and UNICOS/mk a F_GETFL returns an O_NDELAY
+        * after a successful F_SETFL of an O_NONBLOCK. */
+       RETVAL = RETVAL & (O_NONBLOCK | O_NDELAY) ? 0 : 1;
+
+       if (block >= 0) {
+           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
        /* Standard POSIX */ 
@@ -205,7 +150,7 @@ fgetpos(handle)
            ST(0) = sv_2mortal(newSVpv((char*)&pos, sizeof(Fpos_t)));
        }
        else {
-           ST(0) = &sv_undef;
+           ST(0) = &PL_sv_undef;
            errno = EINVAL;
        }
 
@@ -214,11 +159,13 @@ fsetpos(handle, pos)
        InputStream     handle
        SV *            pos
     CODE:
-       if (handle)
+        char *p;
+       STRLEN len;
+       if (handle && (p = SvPV(pos,len)) && len == sizeof(Fpos_t))
 #ifdef PerlIO
-           RETVAL = PerlIO_setpos(handle, (Fpos_t*)SvPVX(pos));
+           RETVAL = PerlIO_setpos(handle, (Fpos_t*)p);
 #else
-           RETVAL = fsetpos(handle, (Fpos_t*)SvPVX(pos));
+           RETVAL = fsetpos(handle, (Fpos_t*)p);
 #endif
        else {
            RETVAL = -1;
@@ -249,7 +196,7 @@ new_tmpfile(packname = "IO::File")
            SvREFCNT_dec(gv);   /* undo increment in newRV() */
        }
        else {
-           ST(0) = &sv_undef;
+           ST(0) = &PL_sv_undef;
            SvREFCNT_dec(gv);
        }
 
@@ -415,8 +362,7 @@ setvbuf(handle, buf, type, size)
        int             type
        int             size
     CODE:
-/* Should check HAS_SETVBUF once Configure tests for that */
-#if defined(PERLIO_IS_STDIO) && defined(_IOFBF)
+#if defined(PERLIO_IS_STDIO) && defined(_IOFBF) && defined(HAS_SETVBUF)
        if (!handle)                    /* Try input stream. */
            handle = IoIFP(sv_2io(ST(0)));
        if (handle)
@@ -512,11 +458,4 @@ BOOT:
 #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
 }