1 /* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
2 Contributed by Andy Vaught
4 This file is part of the GNU Fortran 95 runtime library (libgfortran).
6 Libgfortran is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 Libgfortran is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Libgfortran; see the file COPYING. If not, write to
18 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19 Boston, MA 02110-1301, USA. */
21 /* As a special exception, if you link this library with other files,
22 some of which are compiled with GCC, to produce an executable,
23 this library does not by itself cause the resulting executable
24 to be covered by the GNU General Public License.
25 This exception does not however invalidate any other reasons why
26 the executable file might be covered by the GNU General Public License. */
31 /* IO library include. */
34 #include "libgfortran.h"
38 #define DEFAULT_TEMPDIR "/tmp"
40 /* Basic types used in data transfers. */
43 { BT_NULL, BT_INTEGER, BT_LOGICAL, BT_CHARACTER, BT_REAL,
49 struct st_parameter_dt;
53 char *(*alloc_w_at) (struct stream *, int *, gfc_offset);
54 char *(*alloc_r_at) (struct stream *, int *, gfc_offset);
55 try (*sfree) (struct stream *);
56 try (*close) (struct stream *);
57 try (*seek) (struct stream *, gfc_offset);
58 try (*truncate) (struct stream *);
59 int (*read) (struct stream *, void *, size_t *);
60 int (*write) (struct stream *, const void *, size_t *);
61 try (*set) (struct stream *, int, size_t);
66 /* Macros for doing file I/O given a stream. */
68 #define sfree(s) ((s)->sfree)(s)
69 #define sclose(s) ((s)->close)(s)
71 #define salloc_r(s, len) ((s)->alloc_r_at)(s, len, -1)
72 #define salloc_w(s, len) ((s)->alloc_w_at)(s, len, -1)
74 #define salloc_r_at(s, len, where) ((s)->alloc_r_at)(s, len, where)
75 #define salloc_w_at(s, len, where) ((s)->alloc_w_at)(s, len, where)
77 #define sseek(s, pos) ((s)->seek)(s, pos)
78 #define struncate(s) ((s)->truncate)(s)
79 #define sread(s, buf, nbytes) ((s)->read)(s, buf, nbytes)
80 #define swrite(s, buf, nbytes) ((s)->write)(s, buf, nbytes)
82 #define sset(s, c, n) ((s)->set)(s, c, n)
84 /* The array_loop_spec contains the variables for the loops over index ranges
85 that are encountered. Since the variables can be negative, ssize_t
88 typedef struct array_loop_spec
90 /* Index counter for this dimension. */
93 /* Start for the index counter. */
96 /* End for the index counter. */
99 /* Step for the index counter. */
104 /* Representation of a namelist object in libgfortran
107 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../
109 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END
111 The object can be a fully qualified, compound name for an intrinsic
112 type, derived types or derived type components. So, a substring
113 a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
114 read. Hence full information about the structure of the object has
115 to be available to list_read.c and write.
117 These requirements are met by the following data structures.
119 namelist_info type contains all the scalar information about the
120 object and arrays of descriptor_dimension and array_loop_spec types for
123 typedef struct namelist_type
126 /* Object type, stored as GFC_DTYPE_xxxx. */
132 /* Address for the start of the object's data. */
135 /* Flag to show that a read is to be attempted for this node. */
138 /* Length of intrinsic type in bytes. */
141 /* Rank of the object. */
144 /* Overall size of the object in bytes. */
147 /* Length of character string. */
148 index_type string_length;
150 descriptor_dimension * dim;
151 array_loop_spec * ls;
152 struct namelist_type * next;
156 /* Options for the OPEN statement. */
159 { ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,
165 { ACTION_READ, ACTION_WRITE, ACTION_READWRITE,
171 { BLANK_NULL, BLANK_ZERO, BLANK_UNSPECIFIED }
175 { DELIM_NONE, DELIM_APOSTROPHE, DELIM_QUOTE,
181 { FORM_FORMATTED, FORM_UNFORMATTED, FORM_UNSPECIFIED }
185 { POSITION_ASIS, POSITION_REWIND, POSITION_APPEND,
191 { STATUS_UNKNOWN, STATUS_OLD, STATUS_NEW, STATUS_SCRATCH,
192 STATUS_REPLACE, STATUS_UNSPECIFIED
197 { PAD_YES, PAD_NO, PAD_UNSPECIFIED }
201 { ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }
209 { CONVERT_NONE=-1, CONVERT_NATIVE, CONVERT_SWAP, CONVERT_BIG, CONVERT_LITTLE }
212 #define CHARACTER1(name) \
214 gfc_charlen_type name ## _len
215 #define CHARACTER2(name) \
216 gfc_charlen_type name ## _len; \
219 #define IOPARM_LIBRETURN_MASK (3 << 0)
220 #define IOPARM_LIBRETURN_OK (0 << 0)
221 #define IOPARM_LIBRETURN_ERROR (1 << 0)
222 #define IOPARM_LIBRETURN_END (2 << 0)
223 #define IOPARM_LIBRETURN_EOR (3 << 0)
224 #define IOPARM_ERR (1 << 2)
225 #define IOPARM_END (1 << 3)
226 #define IOPARM_EOR (1 << 4)
227 #define IOPARM_HAS_IOSTAT (1 << 5)
228 #define IOPARM_HAS_IOMSG (1 << 6)
230 #define IOPARM_COMMON_MASK ((1 << 7) - 1)
232 typedef struct st_parameter_common
236 const char *filename;
239 GFC_INTEGER_4 *iostat;
243 #define IOPARM_OPEN_HAS_RECL_IN (1 << 7)
244 #define IOPARM_OPEN_HAS_FILE (1 << 8)
245 #define IOPARM_OPEN_HAS_STATUS (1 << 9)
246 #define IOPARM_OPEN_HAS_ACCESS (1 << 10)
247 #define IOPARM_OPEN_HAS_FORM (1 << 11)
248 #define IOPARM_OPEN_HAS_BLANK (1 << 12)
249 #define IOPARM_OPEN_HAS_POSITION (1 << 13)
250 #define IOPARM_OPEN_HAS_ACTION (1 << 14)
251 #define IOPARM_OPEN_HAS_DELIM (1 << 15)
252 #define IOPARM_OPEN_HAS_PAD (1 << 16)
253 #define IOPARM_OPEN_HAS_CONVERT (1 << 17)
257 st_parameter_common common;
258 GFC_INTEGER_4 recl_in;
264 CHARACTER1 (position);
268 CHARACTER1 (convert);
272 #define IOPARM_CLOSE_HAS_STATUS (1 << 7)
276 st_parameter_common common;
283 st_parameter_common common;
285 st_parameter_filepos;
287 #define IOPARM_INQUIRE_HAS_EXIST (1 << 7)
288 #define IOPARM_INQUIRE_HAS_OPENED (1 << 8)
289 #define IOPARM_INQUIRE_HAS_NUMBER (1 << 9)
290 #define IOPARM_INQUIRE_HAS_NAMED (1 << 10)
291 #define IOPARM_INQUIRE_HAS_NEXTREC (1 << 11)
292 #define IOPARM_INQUIRE_HAS_RECL_OUT (1 << 12)
293 #define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)
294 #define IOPARM_INQUIRE_HAS_FILE (1 << 14)
295 #define IOPARM_INQUIRE_HAS_ACCESS (1 << 15)
296 #define IOPARM_INQUIRE_HAS_FORM (1 << 16)
297 #define IOPARM_INQUIRE_HAS_BLANK (1 << 17)
298 #define IOPARM_INQUIRE_HAS_POSITION (1 << 18)
299 #define IOPARM_INQUIRE_HAS_ACTION (1 << 19)
300 #define IOPARM_INQUIRE_HAS_DELIM (1 << 20)
301 #define IOPARM_INQUIRE_HAS_PAD (1 << 21)
302 #define IOPARM_INQUIRE_HAS_NAME (1 << 22)
303 #define IOPARM_INQUIRE_HAS_SEQUENTIAL (1 << 23)
304 #define IOPARM_INQUIRE_HAS_DIRECT (1 << 24)
305 #define IOPARM_INQUIRE_HAS_FORMATTED (1 << 25)
306 #define IOPARM_INQUIRE_HAS_UNFORMATTED (1 << 26)
307 #define IOPARM_INQUIRE_HAS_READ (1 << 27)
308 #define IOPARM_INQUIRE_HAS_WRITE (1 << 28)
309 #define IOPARM_INQUIRE_HAS_READWRITE (1 << 29)
310 #define IOPARM_INQUIRE_HAS_CONVERT (1 << 30)
314 st_parameter_common common;
315 GFC_INTEGER_4 *exist, *opened, *number, *named;
316 GFC_INTEGER_4 *nextrec, *recl_out;
317 GFC_IO_INT *strm_pos_out;
322 CHARACTER1 (position);
327 CHARACTER2 (sequential);
329 CHARACTER2 (formatted);
330 CHARACTER1 (unformatted);
333 CHARACTER2 (readwrite);
334 CHARACTER1 (convert);
336 st_parameter_inquire;
341 #define IOPARM_DT_LIST_FORMAT (1 << 7)
342 #define IOPARM_DT_NAMELIST_READ_MODE (1 << 8)
343 #define IOPARM_DT_HAS_REC (1 << 9)
344 #define IOPARM_DT_HAS_SIZE (1 << 10)
345 #define IOPARM_DT_HAS_IOLENGTH (1 << 11)
346 #define IOPARM_DT_HAS_FORMAT (1 << 12)
347 #define IOPARM_DT_HAS_ADVANCE (1 << 13)
348 #define IOPARM_DT_HAS_INTERNAL_UNIT (1 << 14)
349 #define IOPARM_DT_HAS_NAMELIST_NAME (1 << 15)
350 /* Internal use bit. */
351 #define IOPARM_DT_IONML_SET (1 << 31)
353 typedef struct st_parameter_dt
355 st_parameter_common common;
357 GFC_INTEGER_4 *size, *iolength;
358 gfc_array_char *internal_unit_desc;
360 CHARACTER2 (advance);
361 CHARACTER1 (internal_unit);
362 CHARACTER2 (namelist_name);
363 /* Private part of the structure. The compiler just needs
364 to reserve enough space. */
369 void (*transfer) (struct st_parameter_dt *, bt, void *, int,
371 struct gfc_unit *current_unit;
372 /* Item number in a formatted data transfer. Also used in namelist
373 read_logical as an index into line_buffer. */
376 unit_blank blank_status;
377 enum {SIGN_S, SIGN_SS, SIGN_SP} sign_status;
379 int max_pos; /* Maximum righthand column written to. */
380 /* Number of skips + spaces to be done for T and X-editing. */
382 /* Number of spaces to be done for T and X-editing. */
384 /* Whether an EOR condition was encountered. Value is:
385 0 if no EOR was encountered
386 1 if an EOR was encountered due to a 1-byte marker (LF)
387 2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
389 unit_advance advance_status;
391 unsigned reversion_flag : 1; /* Format reversion has occurred. */
392 unsigned first_item : 1;
393 unsigned seen_dollar : 1;
394 unsigned eor_condition : 1;
395 unsigned no_leading_blank : 1;
396 unsigned char_flag : 1;
397 unsigned input_complete : 1;
399 unsigned comma_flag : 1;
400 /* A namelist specific flag used in the list directed library
401 to flag that calls are being made from namelist read (eg. to
402 ignore comments or to treat '/' as a terminator) */
403 unsigned namelist_mode : 1;
404 /* A namelist specific flag used in the list directed library
405 to flag read errors and return, so that an attempt can be
406 made to read a new object name. */
407 unsigned nml_read_error : 1;
408 /* A sequential formatted read specific flag used to signal that a
409 character string is being read so don't use commas to shorten a
410 formatted field width. */
411 unsigned sf_read_comma : 1;
412 /* A namelist specific flag used to enable reading input from
413 line_buffer for logical reads. */
414 unsigned line_buffer_enabled : 1;
415 /* An internal unit specific flag used to identify that the associated
417 unsigned unit_is_internal : 1;
418 /* An internal unit specific flag to signify an EOF condition for list
421 /* 16 unused bits. */
433 struct format_data *fmt;
435 namelist_info *ionml;
436 /* A flag used to identify when a non-standard expanded namelist read
439 /* Storage area for values except for strings. Must be large
440 enough to hold a complex value (two reals) of the largest
443 gfc_offset size_used;
445 /* This pad size must be equal to the pad_size declared in
446 trans-io.c (gfc_build_io_library_fndecls). The above structure
447 must be smaller or equal to this array. */
448 char pad[16 * sizeof (char *) + 32 * sizeof (int)];
453 /* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */
454 extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
455 >= sizeof (((st_parameter_dt *) 0)->u.p)
469 unit_position position;
472 unit_convert convert;
477 /* The default value of record length for preconnected units is defined
478 here. This value can be overriden by an environment variable.
479 Default value is 1 Gb. */
481 #define DEFAULT_RECL 1073741824
484 typedef struct gfc_unit
490 struct gfc_unit *left, *right;
493 int read_bad, current_record;
495 { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
501 /* recl -- Record length of the file.
502 last_record -- Last record number read or written
503 maxrec -- Maximum record number in a direct access file
504 bytes_left -- Bytes left in current record.
505 strm_pos -- Current position in file for STREAM I/O. */
506 gfc_offset recl, last_record, maxrec, bytes_left, strm_pos;
508 __gthread_mutex_t lock;
509 /* Number of threads waiting to acquire this unit's lock.
510 When non-zero, close_unit doesn't only removes the unit
511 from the UNIT_ROOT tree, but doesn't free it and the
512 last of the waiting threads will do that.
513 This must be either atomically increased/decreased, or
514 always guarded by UNIT_LOCK. */
516 /* Flag set by close_unit if the unit as been closed.
517 Must be manipulated under unit's lock. */
520 /* For traversing arrays */
529 /* Format tokens. Only about half of these can be stored in the
534 FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
535 FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
536 FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
537 FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
538 FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
543 /* Format nodes. A format string is converted into a tree of these
544 structures, which is traversed as part of a data transfer statement. */
583 /* Members for traversing the tree during data transfer. */
586 struct fnode *current;
594 extern int move_pos_offset (stream *, int);
595 internal_proto(move_pos_offset);
597 extern int compare_files (stream *, stream *);
598 internal_proto(compare_files);
600 extern stream *open_external (st_parameter_open *, unit_flags *);
601 internal_proto(open_external);
603 extern stream *open_internal (char *, int);
604 internal_proto(open_internal);
606 extern stream *input_stream (void);
607 internal_proto(input_stream);
609 extern stream *output_stream (void);
610 internal_proto(output_stream);
612 extern stream *error_stream (void);
613 internal_proto(error_stream);
615 extern int compare_file_filename (gfc_unit *, const char *, int);
616 internal_proto(compare_file_filename);
618 extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
619 internal_proto(find_file);
621 extern void flush_all_units (void);
622 internal_proto(flush_all_units);
624 extern int stream_at_bof (stream *);
625 internal_proto(stream_at_bof);
627 extern int stream_at_eof (stream *);
628 internal_proto(stream_at_eof);
630 extern int delete_file (gfc_unit *);
631 internal_proto(delete_file);
633 extern int file_exists (const char *file, gfc_charlen_type file_len);
634 internal_proto(file_exists);
636 extern const char *inquire_sequential (const char *, int);
637 internal_proto(inquire_sequential);
639 extern const char *inquire_direct (const char *, int);
640 internal_proto(inquire_direct);
642 extern const char *inquire_formatted (const char *, int);
643 internal_proto(inquire_formatted);
645 extern const char *inquire_unformatted (const char *, int);
646 internal_proto(inquire_unformatted);
648 extern const char *inquire_read (const char *, int);
649 internal_proto(inquire_read);
651 extern const char *inquire_write (const char *, int);
652 internal_proto(inquire_write);
654 extern const char *inquire_readwrite (const char *, int);
655 internal_proto(inquire_readwrite);
657 extern gfc_offset file_length (stream *);
658 internal_proto(file_length);
660 extern gfc_offset file_position (stream *);
661 internal_proto(file_position);
663 extern int is_seekable (stream *);
664 internal_proto(is_seekable);
666 extern int is_preconnected (stream *);
667 internal_proto(is_preconnected);
669 extern void flush_if_preconnected (stream *);
670 internal_proto(flush_if_preconnected);
672 extern void empty_internal_buffer(stream *);
673 internal_proto(empty_internal_buffer);
675 extern try flush (stream *);
676 internal_proto(flush);
678 extern int stream_isatty (stream *);
679 internal_proto(stream_isatty);
681 extern char * stream_ttyname (stream *);
682 internal_proto(stream_ttyname);
684 extern gfc_offset stream_offset (stream *s);
685 internal_proto(stream_offset);
687 extern int unpack_filename (char *, const char *, int);
688 internal_proto(unpack_filename);
692 /* Maximum file offset, computed at library initialization time. */
693 extern gfc_offset max_offset;
694 internal_proto(max_offset);
696 /* Unit tree root. */
697 extern gfc_unit *unit_root;
698 internal_proto(unit_root);
700 extern __gthread_mutex_t unit_lock;
701 internal_proto(unit_lock);
703 extern int close_unit (gfc_unit *);
704 internal_proto(close_unit);
706 extern gfc_unit *get_internal_unit (st_parameter_dt *);
707 internal_proto(get_internal_unit);
709 extern void free_internal_unit (st_parameter_dt *);
710 internal_proto(free_internal_unit);
712 extern int is_internal_unit (st_parameter_dt *);
713 internal_proto(is_internal_unit);
715 extern int is_array_io (st_parameter_dt *);
716 internal_proto(is_array_io);
718 extern int is_stream_io (st_parameter_dt *);
719 internal_proto(is_stream_io);
721 extern gfc_unit *find_unit (int);
722 internal_proto(find_unit);
724 extern gfc_unit *find_or_create_unit (int);
725 internal_proto(find_or_create_unit);
727 extern gfc_unit *get_unit (st_parameter_dt *, int);
728 internal_proto(get_unit);
730 extern void unlock_unit (gfc_unit *);
731 internal_proto(unlock_unit);
735 extern void test_endfile (gfc_unit *);
736 internal_proto(test_endfile);
738 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
739 internal_proto(new_unit);
743 extern void parse_format (st_parameter_dt *);
744 internal_proto(parse_format);
746 extern const fnode *next_format (st_parameter_dt *);
747 internal_proto(next_format);
749 extern void unget_format (st_parameter_dt *, const fnode *);
750 internal_proto(unget_format);
752 extern void format_error (st_parameter_dt *, const fnode *, const char *);
753 internal_proto(format_error);
755 extern void free_format_data (st_parameter_dt *);
756 internal_proto(free_format_data);
760 #define SCRATCH_SIZE 300
762 extern const char *type_name (bt);
763 internal_proto(type_name);
765 extern void *read_block (st_parameter_dt *, int *);
766 internal_proto(read_block);
768 extern char *read_sf (st_parameter_dt *, int *, int);
769 internal_proto(read_sf);
771 extern void *write_block (st_parameter_dt *, int);
772 internal_proto(write_block);
774 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *);
775 internal_proto(next_array_record);
777 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *);
778 internal_proto(init_loop_spec);
780 extern void next_record (st_parameter_dt *, int);
781 internal_proto(next_record);
783 extern void reverse_memcpy (void *, const void *, size_t);
784 internal_proto (reverse_memcpy);
788 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
789 internal_proto(set_integer);
791 extern GFC_UINTEGER_LARGEST max_value (int, int);
792 internal_proto(max_value);
794 extern int convert_real (st_parameter_dt *, void *, const char *, int);
795 internal_proto(convert_real);
797 extern void read_a (st_parameter_dt *, const fnode *, char *, int);
798 internal_proto(read_a);
800 extern void read_f (st_parameter_dt *, const fnode *, char *, int);
801 internal_proto(read_f);
803 extern void read_l (st_parameter_dt *, const fnode *, char *, int);
804 internal_proto(read_l);
806 extern void read_x (st_parameter_dt *, int);
807 internal_proto(read_x);
809 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
810 internal_proto(read_radix);
812 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
813 internal_proto(read_decimal);
817 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
819 internal_proto(list_formatted_read);
821 extern void finish_list_read (st_parameter_dt *);
822 internal_proto(finish_list_read);
824 extern void namelist_read (st_parameter_dt *);
825 internal_proto(namelist_read);
827 extern void namelist_write (st_parameter_dt *);
828 internal_proto(namelist_write);
832 extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
833 internal_proto(write_a);
835 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
836 internal_proto(write_b);
838 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
839 internal_proto(write_d);
841 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
842 internal_proto(write_e);
844 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
845 internal_proto(write_en);
847 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
848 internal_proto(write_es);
850 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
851 internal_proto(write_f);
853 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
854 internal_proto(write_i);
856 extern void write_l (st_parameter_dt *, const fnode *, char *, int);
857 internal_proto(write_l);
859 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
860 internal_proto(write_o);
862 extern void write_x (st_parameter_dt *, int, int);
863 internal_proto(write_x);
865 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
866 internal_proto(write_z);
868 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
870 internal_proto(list_formatted_write);
873 extern notification notification_std(int);
874 internal_proto(notification_std);
876 /* size_from_kind.c */
877 extern size_t size_from_real_kind (int);
878 internal_proto(size_from_real_kind);
880 extern size_t size_from_complex_kind (int);
881 internal_proto(size_from_complex_kind);
884 extern void free_ionml (st_parameter_dt *);
885 internal_proto(free_ionml);
888 inc_waiting_locked (gfc_unit *u)
890 #ifdef HAVE_SYNC_FETCH_AND_ADD
891 (void) __sync_fetch_and_add (&u->waiting, 1);
898 predec_waiting_locked (gfc_unit *u)
900 #ifdef HAVE_SYNC_FETCH_AND_ADD
901 return __sync_add_and_fetch (&u->waiting, -1);
908 dec_waiting_unlocked (gfc_unit *u)
910 #ifdef HAVE_SYNC_FETCH_AND_ADD
911 (void) __sync_fetch_and_add (&u->waiting, -1);
913 __gthread_mutex_lock (&unit_lock);
915 __gthread_mutex_unlock (&unit_lock);
921 /* ../runtime/environ.c This is here because we return unit_convert. */
923 unit_convert get_unformatted_convert (int);
924 internal_proto(get_unformatted_convert);