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 instrinsic
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 /* 17 unused bits. */
430 struct format_data *fmt;
432 namelist_info *ionml;
433 /* A flag used to identify when a non-standard expanded namelist read
436 /* Storage area for values except for strings. Must be large
437 enough to hold a complex value (two reals) of the largest
440 gfc_offset size_used;
442 /* This pad size must be equal to the pad_size declared in
443 trans-io.c (gfc_build_io_library_fndecls). The above structure
444 must be smaller or equal to this array. */
445 char pad[16 * sizeof (char *) + 32 * sizeof (int)];
450 /* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */
451 extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
452 >= sizeof (((st_parameter_dt *) 0)->u.p)
466 unit_position position;
469 unit_convert convert;
474 /* The default value of record length for preconnected units is defined
475 here. This value can be overriden by an environment variable.
476 Default value is 1 Gb. */
478 #define DEFAULT_RECL 1073741824
481 typedef struct gfc_unit
487 struct gfc_unit *left, *right;
490 int read_bad, current_record;
492 { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
498 /* recl -- Record length of the file.
499 last_record -- Last record number read or written
500 maxrec -- Maximum record number in a direct access file
501 bytes_left -- Bytes left in current record. */
502 gfc_offset recl, last_record, maxrec, bytes_left;
504 __gthread_mutex_t lock;
505 /* Number of threads waiting to acquire this unit's lock.
506 When non-zero, close_unit doesn't only removes the unit
507 from the UNIT_ROOT tree, but doesn't free it and the
508 last of the waiting threads will do that.
509 This must be either atomically increased/decreased, or
510 always guarded by UNIT_LOCK. */
512 /* Flag set by close_unit if the unit as been closed.
513 Must be manipulated under unit's lock. */
516 /* For traversing arrays */
525 /* Format tokens. Only about half of these can be stored in the
530 FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
531 FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
532 FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
533 FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
534 FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
539 /* Format nodes. A format string is converted into a tree of these
540 structures, which is traversed as part of a data transfer statement. */
579 /* Members for traversing the tree during data transfer. */
582 struct fnode *current;
590 extern int move_pos_offset (stream *, int);
591 internal_proto(move_pos_offset);
593 extern int compare_files (stream *, stream *);
594 internal_proto(compare_files);
596 extern stream *open_external (st_parameter_open *, unit_flags *);
597 internal_proto(open_external);
599 extern stream *open_internal (char *, int);
600 internal_proto(open_internal);
602 extern stream *input_stream (void);
603 internal_proto(input_stream);
605 extern stream *output_stream (void);
606 internal_proto(output_stream);
608 extern stream *error_stream (void);
609 internal_proto(error_stream);
611 extern int compare_file_filename (gfc_unit *, const char *, int);
612 internal_proto(compare_file_filename);
614 extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
615 internal_proto(find_file);
617 extern void flush_all_units (void);
618 internal_proto(flush_all_units);
620 extern int stream_at_bof (stream *);
621 internal_proto(stream_at_bof);
623 extern int stream_at_eof (stream *);
624 internal_proto(stream_at_eof);
626 extern int delete_file (gfc_unit *);
627 internal_proto(delete_file);
629 extern int file_exists (const char *file, gfc_charlen_type file_len);
630 internal_proto(file_exists);
632 extern const char *inquire_sequential (const char *, int);
633 internal_proto(inquire_sequential);
635 extern const char *inquire_direct (const char *, int);
636 internal_proto(inquire_direct);
638 extern const char *inquire_formatted (const char *, int);
639 internal_proto(inquire_formatted);
641 extern const char *inquire_unformatted (const char *, int);
642 internal_proto(inquire_unformatted);
644 extern const char *inquire_read (const char *, int);
645 internal_proto(inquire_read);
647 extern const char *inquire_write (const char *, int);
648 internal_proto(inquire_write);
650 extern const char *inquire_readwrite (const char *, int);
651 internal_proto(inquire_readwrite);
653 extern gfc_offset file_length (stream *);
654 internal_proto(file_length);
656 extern gfc_offset file_position (stream *);
657 internal_proto(file_position);
659 extern int is_seekable (stream *);
660 internal_proto(is_seekable);
662 extern int is_preconnected (stream *);
663 internal_proto(is_preconnected);
665 extern void flush_if_preconnected (stream *);
666 internal_proto(flush_if_preconnected);
668 extern void empty_internal_buffer(stream *);
669 internal_proto(empty_internal_buffer);
671 extern try flush (stream *);
672 internal_proto(flush);
674 extern int stream_isatty (stream *);
675 internal_proto(stream_isatty);
677 extern char * stream_ttyname (stream *);
678 internal_proto(stream_ttyname);
680 extern gfc_offset stream_offset (stream *s);
681 internal_proto(stream_offset);
683 extern int unpack_filename (char *, const char *, int);
684 internal_proto(unpack_filename);
688 /* Maximum file offset, computed at library initialization time. */
689 extern gfc_offset max_offset;
690 internal_proto(max_offset);
692 /* Unit tree root. */
693 extern gfc_unit *unit_root;
694 internal_proto(unit_root);
696 extern __gthread_mutex_t unit_lock;
697 internal_proto(unit_lock);
699 extern int close_unit (gfc_unit *);
700 internal_proto(close_unit);
702 extern gfc_unit *get_internal_unit (st_parameter_dt *);
703 internal_proto(get_internal_unit);
705 extern void free_internal_unit (st_parameter_dt *);
706 internal_proto(free_internal_unit);
708 extern int is_internal_unit (st_parameter_dt *);
709 internal_proto(is_internal_unit);
711 extern int is_array_io (st_parameter_dt *);
712 internal_proto(is_array_io);
714 extern int is_stream_io (st_parameter_dt *);
715 internal_proto(is_stream_io);
717 extern gfc_unit *find_unit (int);
718 internal_proto(find_unit);
720 extern gfc_unit *find_or_create_unit (int);
721 internal_proto(find_or_create_unit);
723 extern gfc_unit *get_unit (st_parameter_dt *, int);
724 internal_proto(get_unit);
726 extern void unlock_unit (gfc_unit *);
727 internal_proto(unlock_unit);
731 extern void test_endfile (gfc_unit *);
732 internal_proto(test_endfile);
734 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
735 internal_proto(new_unit);
739 extern void parse_format (st_parameter_dt *);
740 internal_proto(parse_format);
742 extern const fnode *next_format (st_parameter_dt *);
743 internal_proto(next_format);
745 extern void unget_format (st_parameter_dt *, const fnode *);
746 internal_proto(unget_format);
748 extern void format_error (st_parameter_dt *, const fnode *, const char *);
749 internal_proto(format_error);
751 extern void free_format_data (st_parameter_dt *);
752 internal_proto(free_format_data);
756 #define SCRATCH_SIZE 300
758 extern const char *type_name (bt);
759 internal_proto(type_name);
761 extern void *read_block (st_parameter_dt *, int *);
762 internal_proto(read_block);
764 extern char *read_sf (st_parameter_dt *, int *, int);
765 internal_proto(read_sf);
767 extern void *write_block (st_parameter_dt *, int);
768 internal_proto(write_block);
770 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *);
771 internal_proto(next_array_record);
773 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *);
774 internal_proto(init_loop_spec);
776 extern void next_record (st_parameter_dt *, int);
777 internal_proto(next_record);
779 extern void reverse_memcpy (void *, const void *, size_t);
780 internal_proto (reverse_memcpy);
784 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
785 internal_proto(set_integer);
787 extern GFC_UINTEGER_LARGEST max_value (int, int);
788 internal_proto(max_value);
790 extern int convert_real (st_parameter_dt *, void *, const char *, int);
791 internal_proto(convert_real);
793 extern void read_a (st_parameter_dt *, const fnode *, char *, int);
794 internal_proto(read_a);
796 extern void read_f (st_parameter_dt *, const fnode *, char *, int);
797 internal_proto(read_f);
799 extern void read_l (st_parameter_dt *, const fnode *, char *, int);
800 internal_proto(read_l);
802 extern void read_x (st_parameter_dt *, int);
803 internal_proto(read_x);
805 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
806 internal_proto(read_radix);
808 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
809 internal_proto(read_decimal);
813 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
815 internal_proto(list_formatted_read);
817 extern void finish_list_read (st_parameter_dt *);
818 internal_proto(finish_list_read);
820 extern void namelist_read (st_parameter_dt *);
821 internal_proto(namelist_read);
823 extern void namelist_write (st_parameter_dt *);
824 internal_proto(namelist_write);
828 extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
829 internal_proto(write_a);
831 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
832 internal_proto(write_b);
834 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
835 internal_proto(write_d);
837 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
838 internal_proto(write_e);
840 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
841 internal_proto(write_en);
843 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
844 internal_proto(write_es);
846 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
847 internal_proto(write_f);
849 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
850 internal_proto(write_i);
852 extern void write_l (st_parameter_dt *, const fnode *, char *, int);
853 internal_proto(write_l);
855 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
856 internal_proto(write_o);
858 extern void write_x (st_parameter_dt *, int, int);
859 internal_proto(write_x);
861 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
862 internal_proto(write_z);
864 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
866 internal_proto(list_formatted_write);
869 extern notification notification_std(int);
870 internal_proto(notification_std);
872 /* size_from_kind.c */
873 extern size_t size_from_real_kind (int);
874 internal_proto(size_from_real_kind);
876 extern size_t size_from_complex_kind (int);
877 internal_proto(size_from_complex_kind);
880 extern void free_ionml (st_parameter_dt *);
881 internal_proto(free_ionml);
884 inc_waiting_locked (gfc_unit *u)
886 #ifdef HAVE_SYNC_FETCH_AND_ADD
887 (void) __sync_fetch_and_add (&u->waiting, 1);
894 predec_waiting_locked (gfc_unit *u)
896 #ifdef HAVE_SYNC_FETCH_AND_ADD
897 return __sync_add_and_fetch (&u->waiting, -1);
904 dec_waiting_unlocked (gfc_unit *u)
906 #ifdef HAVE_SYNC_FETCH_AND_ADD
907 (void) __sync_fetch_and_add (&u->waiting, -1);
909 __gthread_mutex_lock (&unit_lock);
911 __gthread_mutex_unlock (&unit_lock);
917 /* ../runtime/environ.c This is here because we return unit_convert. */
919 unit_convert get_unformatted_convert (int);
920 internal_proto(get_unformatted_convert);