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3753e22736
* libguile/fports.c (scm_revealed_count, scm_port_revealed) (scm_set_port_revealed_x, scm_adjust_port_revealed_x): Move these APIs here, and only operate on fports. To keep revealed ports alive, now we will just keep them in a data structure that the GC knows about -- a static list. * libguile/fports.h: Add revealed count to scm_t_fport, and move decls of revealed-count functions here. * libguile/ports.h: * libguile/ports.c: Adapt to change. Remove SCM_REVEALED and SCM_SETREVEALED; since they only apply to fports now, keeping them around would be inviting type errors. (finalize_port): We don't need to worry about resuscitating ports here. * libguile/init.c: Use the scm_set_port_revealed_x function to set the revealed counts on stream ports.
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* classes: h_files */
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#ifndef SCM_FPORTS_H
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#define SCM_FPORTS_H
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/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2006, 2008, 2009, 2011, 2012 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "libguile/__scm.h"
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#include "libguile/ports.h"
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/* struct allocated for each buffered FPORT. */
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typedef struct scm_t_fport {
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int fdes; /* file descriptor. */
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int revealed; /* 0 not revealed, > 1 revealed.
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* Revealed ports do not get GC'd.
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*/
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} scm_t_fport;
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SCM_API scm_t_bits scm_tc16_fport;
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#define SCM_FSTREAM(x) ((scm_t_fport *) SCM_STREAM (x))
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#define SCM_FPORT_FDES(x) (SCM_FSTREAM (x)->fdes)
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#define SCM_FPORTP(x) (SCM_HAS_TYP16 (x, scm_tc16_fport))
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#define SCM_OPFPORTP(x) (SCM_FPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_OPN))
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#define SCM_OPINFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_RDNG))
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#define SCM_OPOUTFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_WRTNG))
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/* test whether fdes supports random access. */
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#define SCM_FDES_RANDOM_P(fdes) ((lseek (fdes, 0, SEEK_CUR) == -1) ? 0 : 1)
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SCM_API SCM scm_setbuf0 (SCM port);
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SCM_API SCM scm_setvbuf (SCM port, SCM mode, SCM size);
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SCM_API void scm_evict_ports (int fd);
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SCM_API SCM scm_open_file (SCM filename, SCM modes);
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SCM_API SCM scm_fdes_to_port (int fdes, char *mode, SCM name);
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SCM_API SCM scm_file_port_p (SCM obj);
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/* Revealed counts. */
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SCM_API int scm_revealed_count (SCM port);
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SCM_API SCM scm_port_revealed (SCM port);
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SCM_API SCM scm_set_port_revealed_x (SCM port, SCM rcount);
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SCM_API SCM scm_adjust_port_revealed_x (SCM port, SCM addend);
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SCM_INTERNAL void scm_init_fports (void);
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/* internal functions */
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SCM_INTERNAL SCM scm_i_fdes_to_port (int fdes, long mode_bits, SCM name);
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#endif /* SCM_FPORTS_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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