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;
478 /* The default value of record length for preconnected units is defined
479 here. This value can be overriden by an environment variable.
480 Default value is 1 Gb. */
482 #define DEFAULT_RECL 1073741824
485 typedef struct gfc_unit
491 struct gfc_unit *left, *right;
494 int read_bad, current_record;
496 { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
502 /* recl -- Record length of the file.
503 last_record -- Last record number read or written
504 maxrec -- Maximum record number in a direct access file
505 bytes_left -- Bytes left in current record.
506 strm_pos -- Current position in file for STREAM I/O. */
507 gfc_offset recl, last_record, maxrec, bytes_left, strm_pos;
509 __gthread_mutex_t lock;
510 /* Number of threads waiting to acquire this unit's lock.
511 When non-zero, close_unit doesn't only removes the unit
512 from the UNIT_ROOT tree, but doesn't free it and the
513 last of the waiting threads will do that.
514 This must be either atomically increased/decreased, or
515 always guarded by UNIT_LOCK. */
517 /* Flag set by close_unit if the unit as been closed.
518 Must be manipulated under unit's lock. */
521 /* For traversing arrays */
530 /* Format tokens. Only about half of these can be stored in the
535 FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
536 FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
537 FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
538 FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
539 FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
544 /* Format nodes. A format string is converted into a tree of these
545 structures, which is traversed as part of a data transfer statement. */
584 /* Members for traversing the tree during data transfer. */
587 struct fnode *current;
595 extern int move_pos_offset (stream *, int);
596 internal_proto(move_pos_offset);
598 extern int compare_files (stream *, stream *);
599 internal_proto(compare_files);
601 extern stream *open_external (st_parameter_open *, unit_flags *);
602 internal_proto(open_external);
604 extern stream *open_internal (char *, int);
605 internal_proto(open_internal);
607 extern stream *input_stream (void);
608 internal_proto(input_stream);
610 extern stream *output_stream (void);
611 internal_proto(output_stream);
613 extern stream *error_stream (void);
614 internal_proto(error_stream);
616 extern int compare_file_filename (gfc_unit *, const char *, int);
617 internal_proto(compare_file_filename);
619 extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
620 internal_proto(find_file);
622 extern void flush_all_units (void);
623 internal_proto(flush_all_units);
625 extern int stream_at_bof (stream *);
626 internal_proto(stream_at_bof);
628 extern int stream_at_eof (stream *);
629 internal_proto(stream_at_eof);
631 extern int delete_file (gfc_unit *);
632 internal_proto(delete_file);
634 extern int file_exists (const char *file, gfc_charlen_type file_len);
635 internal_proto(file_exists);
637 extern const char *inquire_sequential (const char *, int);
638 internal_proto(inquire_sequential);
640 extern const char *inquire_direct (const char *, int);
641 internal_proto(inquire_direct);
643 extern const char *inquire_formatted (const char *, int);
644 internal_proto(inquire_formatted);
646 extern const char *inquire_unformatted (const char *, int);
647 internal_proto(inquire_unformatted);
649 extern const char *inquire_read (const char *, int);
650 internal_proto(inquire_read);
652 extern const char *inquire_write (const char *, int);
653 internal_proto(inquire_write);
655 extern const char *inquire_readwrite (const char *, int);
656 internal_proto(inquire_readwrite);
658 extern gfc_offset file_length (stream *);
659 internal_proto(file_length);
661 extern gfc_offset file_position (stream *);
662 internal_proto(file_position);
664 extern int is_seekable (stream *);
665 internal_proto(is_seekable);
667 extern int is_preconnected (stream *);
668 internal_proto(is_preconnected);
670 extern void flush_if_preconnected (stream *);
671 internal_proto(flush_if_preconnected);
673 extern void empty_internal_buffer(stream *);
674 internal_proto(empty_internal_buffer);
676 extern try flush (stream *);
677 internal_proto(flush);
679 extern int stream_isatty (stream *);
680 internal_proto(stream_isatty);
682 extern char * stream_ttyname (stream *);
683 internal_proto(stream_ttyname);
685 extern gfc_offset stream_offset (stream *s);
686 internal_proto(stream_offset);
688 extern int unpack_filename (char *, const char *, int);
689 internal_proto(unpack_filename);
693 /* Maximum file offset, computed at library initialization time. */
694 extern gfc_offset max_offset;
695 internal_proto(max_offset);
697 /* Unit tree root. */
698 extern gfc_unit *unit_root;
699 internal_proto(unit_root);
701 extern __gthread_mutex_t unit_lock;
702 internal_proto(unit_lock);
704 extern int close_unit (gfc_unit *);
705 internal_proto(close_unit);
707 extern gfc_unit *get_internal_unit (st_parameter_dt *);
708 internal_proto(get_internal_unit);
710 extern void free_internal_unit (st_parameter_dt *);
711 internal_proto(free_internal_unit);
713 extern int is_internal_unit (st_parameter_dt *);
714 internal_proto(is_internal_unit);
716 extern int is_array_io (st_parameter_dt *);
717 internal_proto(is_array_io);
719 extern int is_stream_io (st_parameter_dt *);
720 internal_proto(is_stream_io);
722 extern gfc_unit *find_unit (int);
723 internal_proto(find_unit);
725 extern gfc_unit *find_or_create_unit (int);
726 internal_proto(find_or_create_unit);
728 extern gfc_unit *get_unit (st_parameter_dt *, int);
729 internal_proto(get_unit);
731 extern void unlock_unit (gfc_unit *);
732 internal_proto(unlock_unit);
736 extern void test_endfile (gfc_unit *);
737 internal_proto(test_endfile);
739 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
740 internal_proto(new_unit);
744 extern void parse_format (st_parameter_dt *);
745 internal_proto(parse_format);
747 extern const fnode *next_format (st_parameter_dt *);
748 internal_proto(next_format);
750 extern void unget_format (st_parameter_dt *, const fnode *);
751 internal_proto(unget_format);
753 extern void format_error (st_parameter_dt *, const fnode *, const char *);
754 internal_proto(format_error);
756 extern void free_format_data (st_parameter_dt *);
757 internal_proto(free_format_data);
761 #define SCRATCH_SIZE 300
763 extern const char *type_name (bt);
764 internal_proto(type_name);
766 extern void *read_block (st_parameter_dt *, int *);
767 internal_proto(read_block);
769 extern char *read_sf (st_parameter_dt *, int *, int);
770 internal_proto(read_sf);
772 extern void *write_block (st_parameter_dt *, int);
773 internal_proto(write_block);
775 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *);
776 internal_proto(next_array_record);
778 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *);
779 internal_proto(init_loop_spec);
781 extern void next_record (st_parameter_dt *, int);
782 internal_proto(next_record);
784 extern void reverse_memcpy (void *, const void *, size_t);
785 internal_proto (reverse_memcpy);
789 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
790 internal_proto(set_integer);
792 extern GFC_UINTEGER_LARGEST max_value (int, int);
793 internal_proto(max_value);
795 extern int convert_real (st_parameter_dt *, void *, const char *, int);
796 internal_proto(convert_real);
798 extern void read_a (st_parameter_dt *, const fnode *, char *, int);
799 internal_proto(read_a);
801 extern void read_f (st_parameter_dt *, const fnode *, char *, int);
802 internal_proto(read_f);
804 extern void read_l (st_parameter_dt *, const fnode *, char *, int);
805 internal_proto(read_l);
807 extern void read_x (st_parameter_dt *, int);
808 internal_proto(read_x);
810 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
811 internal_proto(read_radix);
813 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
814 internal_proto(read_decimal);
818 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
820 internal_proto(list_formatted_read);
822 extern void finish_list_read (st_parameter_dt *);
823 internal_proto(finish_list_read);
825 extern void namelist_read (st_parameter_dt *);
826 internal_proto(namelist_read);
828 extern void namelist_write (st_parameter_dt *);
829 internal_proto(namelist_write);
833 extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
834 internal_proto(write_a);
836 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
837 internal_proto(write_b);
839 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
840 internal_proto(write_d);
842 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
843 internal_proto(write_e);
845 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
846 internal_proto(write_en);
848 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
849 internal_proto(write_es);
851 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
852 internal_proto(write_f);
854 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
855 internal_proto(write_i);
857 extern void write_l (st_parameter_dt *, const fnode *, char *, int);
858 internal_proto(write_l);
860 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
861 internal_proto(write_o);
863 extern void write_x (st_parameter_dt *, int, int);
864 internal_proto(write_x);
866 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
867 internal_proto(write_z);
869 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
871 internal_proto(list_formatted_write);
874 extern notification notification_std(int);
875 internal_proto(notification_std);
877 /* size_from_kind.c */
878 extern size_t size_from_real_kind (int);
879 internal_proto(size_from_real_kind);
881 extern size_t size_from_complex_kind (int);
882 internal_proto(size_from_complex_kind);
885 extern void free_ionml (st_parameter_dt *);
886 internal_proto(free_ionml);
889 inc_waiting_locked (gfc_unit *u)
891 #ifdef HAVE_SYNC_FETCH_AND_ADD
892 (void) __sync_fetch_and_add (&u->waiting, 1);
899 predec_waiting_locked (gfc_unit *u)
901 #ifdef HAVE_SYNC_FETCH_AND_ADD
902 return __sync_add_and_fetch (&u->waiting, -1);
909 dec_waiting_unlocked (gfc_unit *u)
911 #ifdef HAVE_SYNC_FETCH_AND_ADD
912 (void) __sync_fetch_and_add (&u->waiting, -1);
914 __gthread_mutex_lock (&unit_lock);
916 __gthread_mutex_unlock (&unit_lock);
922 /* ../runtime/environ.c This is here because we return unit_convert. */
924 unit_convert get_unformatted_convert (int);
925 internal_proto(get_unformatted_convert);