1 /* Copyright (C) 2002-2019 Free Software Foundation, Inc.
2 Contributed by Andy Vaught
3 F2003 I/O support contributed by Jerry DeLisle
5 This file is part of the GNU Fortran runtime library (libgfortran).
7 Libgfortran is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 Libgfortran is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
29 /* IO library include. */
31 #include "libgfortran.h"
35 #define gcc_unreachable() __builtin_unreachable ()
37 /* POSIX 2008 specifies that the extended locale stuff is found in
38 locale.h, but some systems have them in xlocale.h. */
47 /* Forward declarations. */
48 struct st_parameter_dt;
49 typedef struct stream stream;
52 typedef struct fnode fnode;
56 /* We have POSIX 2008 extended locale stuff. */
57 extern locale_t c_locale;
58 internal_proto(c_locale);
60 extern char* old_locale;
61 internal_proto(old_locale);
62 extern int old_locale_ctr;
63 internal_proto(old_locale_ctr);
64 extern __gthread_mutex_t old_locale_lock;
65 internal_proto(old_locale_lock);
69 /* Macros for testing what kinds of I/O we are doing. */
71 #define is_array_io(dtp) ((dtp)->internal_unit_desc)
73 #define is_internal_unit(dtp) ((dtp)->u.p.unit_is_internal)
75 #define is_stream_io(dtp) ((dtp)->u.p.current_unit->flags.access == ACCESS_STREAM)
77 #define is_char4_unit(dtp) ((dtp)->u.p.current_unit->internal_unit_kind == 4)
79 /* The array_loop_spec contains the variables for the loops over index ranges
80 that are encountered. */
82 typedef struct array_loop_spec
84 /* Index counter for this dimension. */
87 /* Start for the index counter. */
90 /* End for the index counter. */
93 /* Step for the index counter. */
98 /* User defined input/output iomsg length. */
100 #define IOMSG_LEN 256
102 /* Subroutine formatted_dtio (struct, unit, iotype, v_list, iostat,
103 iomsg, (_iotype), (_iomsg)) */
104 typedef void (*formatted_dtio)(void *, GFC_INTEGER_4 *, char *,
106 GFC_INTEGER_4 *, char *,
107 gfc_charlen_type, gfc_charlen_type);
109 /* Subroutine unformatted_dtio (struct, unit, iostat, iomsg, (_iomsg)) */
110 typedef void (*unformatted_dtio)(void *, GFC_INTEGER_4 *, GFC_INTEGER_4 *,
111 char *, gfc_charlen_type);
113 /* The dtio calls for namelist require a CLASS object to be built. */
114 typedef struct gfc_class
123 /* A structure to build a hash table for format data. */
125 #define FORMAT_HASH_SIZE 16
127 typedef struct format_hash_entry
130 gfc_charlen_type key_len;
131 struct format_data *hashed_fmt;
135 /* Format tokens. Only about half of these can be stored in the
140 FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
141 FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
142 FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
143 FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
144 FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END, FMT_DC,
145 FMT_DP, FMT_STAR, FMT_RC, FMT_RD, FMT_RN, FMT_RP, FMT_RU, FMT_RZ, FMT_DT
149 /* Representation of a namelist object in libgfortran
152 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../
154 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END
156 The object can be a fully qualified, compound name for an intrinsic
157 type, derived types or derived type components. So, a substring
158 a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
159 read. Hence full information about the structure of the object has
160 to be available to list_read.c and write.
162 These requirements are met by the following data structures.
164 namelist_info type contains all the scalar information about the
165 object and arrays of descriptor_dimension and array_loop_spec types for
168 typedef struct namelist_type
176 /* Address for the start of the object's data. */
179 /* Address of specific DTIO subroutine. */
182 /* Address of vtable if dtio_sub non-null. */
185 /* Flag to show that a read is to be attempted for this node. */
188 /* Length of intrinsic type in bytes. */
191 /* Rank of the object. */
194 /* Overall size of the object in bytes. */
197 /* Length of character string. */
198 index_type string_length;
200 descriptor_dimension * dim;
201 array_loop_spec * ls;
202 struct namelist_type * next;
206 /* Options for the OPEN statement. */
209 { ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,
215 { ACTION_READ, ACTION_WRITE, ACTION_READWRITE,
221 { BLANK_NULL, BLANK_ZERO, BLANK_UNSPECIFIED }
225 { DELIM_NONE, DELIM_APOSTROPHE, DELIM_QUOTE,
231 { FORM_FORMATTED, FORM_UNFORMATTED, FORM_UNSPECIFIED }
235 { POSITION_ASIS, POSITION_REWIND, POSITION_APPEND,
241 { STATUS_UNKNOWN, STATUS_OLD, STATUS_NEW, STATUS_SCRATCH,
242 STATUS_REPLACE, STATUS_UNSPECIFIED
247 { PAD_YES, PAD_NO, PAD_UNSPECIFIED }
251 { DECIMAL_POINT, DECIMAL_COMMA, DECIMAL_UNSPECIFIED }
255 { ENCODING_UTF8, ENCODING_DEFAULT, ENCODING_UNSPECIFIED }
259 { ROUND_UP = GFC_FPE_UPWARD,
260 ROUND_DOWN = GFC_FPE_DOWNWARD,
261 ROUND_ZERO = GFC_FPE_TOWARDZERO,
262 ROUND_NEAREST = GFC_FPE_TONEAREST,
263 ROUND_COMPATIBLE = 10, /* round away from zero. */
264 ROUND_PROCDEFINED, /* Here as ROUND_NEAREST. */
265 ROUND_UNSPECIFIED /* Should never occur. */
269 /* NOTE: unit_sign must correspond with the sign_status enumerator in
270 st_parameter_dt to not break the ABI. */
272 { SIGN_PROCDEFINED, SIGN_SUPPRESS, SIGN_PLUS, SIGN_UNSPECIFIED }
276 { ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }
280 {READING, WRITING, LIST_READING, LIST_WRITING}
284 { ASYNC_YES, ASYNC_NO, ASYNC_UNSPECIFIED }
288 { SHARE_DENYRW, SHARE_DENYNONE,
294 { CC_LIST, CC_FORTRAN, CC_NONE,
299 /* End-of-record types for CC_FORTRAN. */
307 CCF_OVERPRINT_NOA=0x20,
312 { SIGN_S, SIGN_SS, SIGN_SP }
315 /* Make sure to keep st_parameter_* in sync with gcc/fortran/ioparm.def. */
317 #define CHARACTER1(name) \
319 gfc_charlen_type name ## _len
320 #define CHARACTER2(name) \
321 gfc_charlen_type name ## _len; \
326 st_parameter_common common;
333 CHARACTER1 (position);
337 CHARACTER1 (convert);
338 CHARACTER2 (decimal);
339 CHARACTER1 (encoding);
342 CHARACTER2 (asynchronous);
343 GFC_INTEGER_4 *newunit;
344 GFC_INTEGER_4 readonly;
350 #define IOPARM_CLOSE_HAS_STATUS (1 << 7)
354 st_parameter_common common;
361 st_parameter_common common;
363 st_parameter_filepos;
365 #define IOPARM_INQUIRE_HAS_EXIST (1 << 7)
366 #define IOPARM_INQUIRE_HAS_OPENED (1 << 8)
367 #define IOPARM_INQUIRE_HAS_NUMBER (1 << 9)
368 #define IOPARM_INQUIRE_HAS_NAMED (1 << 10)
369 #define IOPARM_INQUIRE_HAS_NEXTREC (1 << 11)
370 #define IOPARM_INQUIRE_HAS_RECL_OUT (1 << 12)
371 #define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)
372 #define IOPARM_INQUIRE_HAS_FILE (1 << 14)
373 #define IOPARM_INQUIRE_HAS_ACCESS (1 << 15)
374 #define IOPARM_INQUIRE_HAS_FORM (1 << 16)
375 #define IOPARM_INQUIRE_HAS_BLANK (1 << 17)
376 #define IOPARM_INQUIRE_HAS_POSITION (1 << 18)
377 #define IOPARM_INQUIRE_HAS_ACTION (1 << 19)
378 #define IOPARM_INQUIRE_HAS_DELIM (1 << 20)
379 #define IOPARM_INQUIRE_HAS_PAD (1 << 21)
380 #define IOPARM_INQUIRE_HAS_NAME (1 << 22)
381 #define IOPARM_INQUIRE_HAS_SEQUENTIAL (1 << 23)
382 #define IOPARM_INQUIRE_HAS_DIRECT (1 << 24)
383 #define IOPARM_INQUIRE_HAS_FORMATTED (1 << 25)
384 #define IOPARM_INQUIRE_HAS_UNFORMATTED (1 << 26)
385 #define IOPARM_INQUIRE_HAS_READ (1 << 27)
386 #define IOPARM_INQUIRE_HAS_WRITE (1 << 28)
387 #define IOPARM_INQUIRE_HAS_READWRITE (1 << 29)
388 #define IOPARM_INQUIRE_HAS_CONVERT (1 << 30)
389 #define IOPARM_INQUIRE_HAS_FLAGS2 (1u << 31)
391 #define IOPARM_INQUIRE_HAS_ASYNCHRONOUS (1 << 0)
392 #define IOPARM_INQUIRE_HAS_DECIMAL (1 << 1)
393 #define IOPARM_INQUIRE_HAS_ENCODING (1 << 2)
394 #define IOPARM_INQUIRE_HAS_ROUND (1 << 3)
395 #define IOPARM_INQUIRE_HAS_SIGN (1 << 4)
396 #define IOPARM_INQUIRE_HAS_PENDING (1 << 5)
397 #define IOPARM_INQUIRE_HAS_SIZE (1 << 6)
398 #define IOPARM_INQUIRE_HAS_ID (1 << 7)
399 #define IOPARM_INQUIRE_HAS_IQSTREAM (1 << 8)
400 #define IOPARM_INQUIRE_HAS_SHARE (1 << 9)
401 #define IOPARM_INQUIRE_HAS_CC (1 << 10)
405 st_parameter_common common;
406 GFC_INTEGER_4 *exist, *opened, *number, *named;
407 GFC_IO_INT *nextrec, *recl_out, *strm_pos_out;
412 CHARACTER1 (position);
417 CHARACTER2 (sequential);
419 CHARACTER2 (formatted);
420 CHARACTER1 (unformatted);
423 CHARACTER2 (readwrite);
424 CHARACTER1 (convert);
425 GFC_INTEGER_4 flags2;
426 CHARACTER1 (asynchronous);
427 CHARACTER2 (decimal);
428 CHARACTER1 (encoding);
431 GFC_INTEGER_4 *pending;
434 CHARACTER1 (iqstream);
438 st_parameter_inquire;
441 #define IOPARM_DT_LIST_FORMAT (1 << 7)
442 #define IOPARM_DT_NAMELIST_READ_MODE (1 << 8)
443 #define IOPARM_DT_HAS_REC (1 << 9)
444 #define IOPARM_DT_HAS_SIZE (1 << 10)
445 #define IOPARM_DT_HAS_IOLENGTH (1 << 11)
446 #define IOPARM_DT_HAS_FORMAT (1 << 12)
447 #define IOPARM_DT_HAS_ADVANCE (1 << 13)
448 #define IOPARM_DT_HAS_INTERNAL_UNIT (1 << 14)
449 #define IOPARM_DT_HAS_NAMELIST_NAME (1 << 15)
450 #define IOPARM_DT_HAS_ID (1 << 16)
451 #define IOPARM_DT_HAS_POS (1 << 17)
452 #define IOPARM_DT_HAS_ASYNCHRONOUS (1 << 18)
453 #define IOPARM_DT_HAS_BLANK (1 << 19)
454 #define IOPARM_DT_HAS_DECIMAL (1 << 20)
455 #define IOPARM_DT_HAS_DELIM (1 << 21)
456 #define IOPARM_DT_HAS_PAD (1 << 22)
457 #define IOPARM_DT_HAS_ROUND (1 << 23)
458 #define IOPARM_DT_HAS_SIGN (1 << 24)
459 #define IOPARM_DT_HAS_F2003 (1 << 25)
460 #define IOPARM_DT_HAS_UDTIO (1 << 26)
461 #define IOPARM_DT_DEC_EXT (1 << 27)
462 /* Internal use bit. */
463 #define IOPARM_DT_IONML_SET (1u << 31)
466 typedef struct st_parameter_dt
468 st_parameter_common common;
470 GFC_IO_INT *size, *iolength;
471 gfc_array_char *internal_unit_desc;
473 CHARACTER2 (advance);
474 CHARACTER1 (internal_unit);
475 CHARACTER2 (namelist_name);
478 CHARACTER1 (asynchronous);
480 CHARACTER1 (decimal);
485 /* Private part of the structure. The compiler just needs
486 to reserve enough space. */
491 void (*transfer) (struct st_parameter_dt *, bt, void *, int,
493 struct gfc_unit *current_unit;
494 /* Item number in a formatted data transfer. Also used in namelist
495 read_logical as an index into line_buffer. */
498 unit_blank blank_status;
499 unit_sign sign_status;
501 /* Maximum righthand column written to. */
503 /* Number of skips + spaces to be done for T and X-editing. */
505 /* Number of spaces to be done for T and X-editing. */
507 /* Whether an EOR condition was encountered. Value is:
508 0 if no EOR was encountered
509 1 if an EOR was encountered due to a 1-byte marker (LF)
510 2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
512 unit_advance advance_status;
513 unsigned reversion_flag : 1; /* Format reversion has occurred. */
514 unsigned first_item : 1;
515 unsigned seen_dollar : 1;
516 unsigned eor_condition : 1;
517 unsigned no_leading_blank : 1;
518 unsigned char_flag : 1;
519 unsigned input_complete : 1;
521 unsigned comma_flag : 1;
522 /* A namelist specific flag used in the list directed library
523 to flag that calls are being made from namelist read (e.g. to
524 ignore comments or to treat '/' as a terminator) */
525 unsigned namelist_mode : 1;
526 /* A namelist specific flag used in the list directed library
527 to flag read errors and return, so that an attempt can be
528 made to read a new object name. */
529 unsigned nml_read_error : 1;
530 /* A sequential formatted read specific flag used to signal that a
531 character string is being read so don't use commas to shorten a
532 formatted field width. */
533 unsigned sf_read_comma : 1;
534 /* A namelist specific flag used to enable reading input from
535 line_buffer for logical reads. */
536 unsigned line_buffer_enabled : 1;
537 /* An internal unit specific flag used to identify that the associated
539 unsigned unit_is_internal : 1;
540 /* An internal unit specific flag to signify an EOF condition for list
543 /* Used for g0 floating point output. */
544 unsigned g0_no_blanks : 1;
545 /* Used to signal use of free_format_data. */
546 unsigned format_not_saved : 1;
547 /* A flag used to identify when a non-standard expanded namelist read
549 unsigned expanded_read : 1;
550 /* Flag to indicate if the statement has async="YES". */
552 /* 12 unused bits. */
554 int child_saved_iostat;
563 struct format_data *fmt;
564 namelist_info *ionml;
565 #ifdef HAVE_NEWLOCALE
568 /* Current position within the look-ahead line buffer. */
570 /* Storage area for values except for strings. Must be
571 large enough to hold a complex value (two reals) of the
574 GFC_IO_INT not_used; /* Needed for alignment. */
575 formatted_dtio fdtio_ptr;
576 unformatted_dtio ufdtio_ptr;
577 /* With CC_FORTRAN, the first character of a record determines the
578 style of record end (and start) to use. We must mark down the type
579 when we write first in write_a so we remember the end type later in
583 unsigned type : 6; /* See enum cc_fortran. */
584 unsigned len : 2; /* Always 0, 1, or 2. */
585 /* The union is updated after start-of-record is written. */
588 char start; /* Output character for start of record. */
589 char end; /* Output character for end of record. */
593 /* This pad size must be equal to the pad_size declared in
594 trans-io.c (gfc_build_io_library_fndecls). The above structure
595 must be smaller or equal to this array. */
596 char pad[16 * sizeof (char *) + 32 * sizeof (int)];
601 /* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */
602 extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
603 >= sizeof (((st_parameter_dt *) 0)->u.p)
606 #define IOPARM_WAIT_HAS_ID (1 << 7)
610 st_parameter_common common;
627 unit_position position;
630 unit_convert convert;
632 unit_decimal decimal;
633 unit_encoding encoding;
644 typedef struct gfc_unit
650 struct gfc_unit *left, *right;
653 int read_bad, current_record, saved_pos, previous_nonadvancing_write;
656 { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
662 unit_decimal decimal_status;
663 unit_delim delim_status;
664 unit_round round_status;
666 /* recl -- Record length of the file.
667 last_record -- Last record number read or written
668 maxrec -- Maximum record number in a direct access file
669 bytes_left -- Bytes left in current record.
670 strm_pos -- Current position in file for STREAM I/O.
671 recl_subrecord -- Maximum length for subrecord.
672 bytes_left_subrecord -- Bytes left in current subrecord. */
673 gfc_offset recl, last_record, maxrec, bytes_left, strm_pos,
674 recl_subrecord, bytes_left_subrecord;
676 /* Set to 1 if we have read a subrecord. */
680 /* Contains the pointer to the async unit. */
681 struct async_unit *au;
683 __gthread_mutex_t lock;
684 /* Number of threads waiting to acquire this unit's lock.
685 When non-zero, close_unit doesn't only removes the unit
686 from the UNIT_ROOT tree, but doesn't free it and the
687 last of the waiting threads will do that.
688 This must be either atomically increased/decreased, or
689 always guarded by UNIT_LOCK. */
691 /* Flag set by close_unit if the unit as been closed.
692 Must be manipulated under unit's lock. */
695 /* For traversing arrays */
699 /* Name of the file at the time OPEN was executed, as a
700 null-terminated C string. */
703 /* The format hash table. */
704 struct format_hash_entry format_hash_table[FORMAT_HASH_SIZE];
706 /* Formatting buffer. */
709 /* Function pointer, points to list_read worker functions. */
710 int (*next_char_fn_ptr) (st_parameter_dt *);
711 void (*push_char_fn_ptr) (st_parameter_dt *, int);
713 /* Internal unit char string data. */
714 char * internal_unit;
715 gfc_charlen_type internal_unit_len;
716 gfc_array_char *string_unit_desc;
717 int internal_unit_kind;
719 /* DTIO Parent/Child procedure, 0 = parent, >0 = child level. */
722 /* Used for ungetc() style functionality. Possible values
723 are an unsigned char, EOF, or EOF - 1 used to mark the
724 field as not valid. */
727 GFC_IO_INT size_used;
731 typedef struct gfc_saved_unit
733 GFC_INTEGER_4 unit_number;
738 /* TEMP_FAILURE_RETRY macro from glibc. */
740 #ifndef TEMP_FAILURE_RETRY
741 /* Evaluate EXPRESSION, and repeat as long as it returns -1 with `errno'
744 # define TEMP_FAILURE_RETRY(expression) \
746 ({ long int __result; \
747 do __result = (long int) (expression); \
748 while (__result == -1L && errno == EINTR); \
755 /* Maximum file offset, computed at library initialization time. */
756 extern gfc_offset max_offset;
757 internal_proto(max_offset);
759 /* Default RECL for sequential access if not given in OPEN statement,
760 computed at library initialization time. */
761 extern gfc_offset default_recl;
762 internal_proto(default_recl);
764 /* Unit tree root. */
765 extern gfc_unit *unit_root;
766 internal_proto(unit_root);
768 extern __gthread_mutex_t unit_lock;
769 internal_proto(unit_lock);
771 extern int close_unit (gfc_unit *);
772 internal_proto(close_unit);
774 extern gfc_unit *set_internal_unit (st_parameter_dt *, gfc_unit *, int);
775 internal_proto(set_internal_unit);
777 extern void stash_internal_unit (st_parameter_dt *);
778 internal_proto(stash_internal_unit);
780 extern gfc_unit *find_unit (int);
781 internal_proto(find_unit);
783 extern gfc_unit *find_or_create_unit (int);
784 internal_proto(find_or_create_unit);
786 extern gfc_unit *get_unit (st_parameter_dt *, int);
787 internal_proto(get_unit);
789 extern void unlock_unit(gfc_unit *);
790 internal_proto(unlock_unit);
792 extern void finish_last_advance_record (gfc_unit *u);
793 internal_proto(finish_last_advance_record);
795 extern int unit_truncate(gfc_unit *, gfc_offset, st_parameter_common *);
796 internal_proto(unit_truncate);
798 extern int newunit_alloc (void);
799 internal_proto(newunit_alloc);
801 extern void newunit_free (int);
802 internal_proto(newunit_free);
807 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
808 internal_proto(new_unit);
813 #define SCRATCH_SIZE 300
815 extern const char *type_name (bt);
816 internal_proto(type_name);
818 extern void * read_block_form (st_parameter_dt *, size_t *);
819 internal_proto(read_block_form);
821 extern void * read_block_form4 (st_parameter_dt *, size_t *);
822 internal_proto(read_block_form4);
824 extern void *write_block (st_parameter_dt *, size_t);
825 internal_proto(write_block);
827 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *,
829 internal_proto(next_array_record);
831 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *,
833 internal_proto(init_loop_spec);
835 extern void next_record (st_parameter_dt *, int);
836 internal_proto(next_record);
838 extern void st_wait (st_parameter_wait *);
839 export_proto (st_wait);
841 extern void st_wait_async (st_parameter_wait *);
842 export_proto (st_wait_async);
844 extern void hit_eof (st_parameter_dt *);
845 internal_proto(hit_eof);
847 extern void transfer_array_inner (st_parameter_dt *, gfc_array_char *, int,
849 internal_proto (transfer_array_inner);
853 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
854 internal_proto(set_integer);
856 extern GFC_UINTEGER_LARGEST si_max (int);
857 internal_proto(si_max);
859 extern int convert_real (st_parameter_dt *, void *, const char *, int);
860 internal_proto(convert_real);
862 extern int convert_infnan (st_parameter_dt *, void *, const char *, int);
863 internal_proto(convert_infnan);
865 extern void read_a (st_parameter_dt *, const fnode *, char *, size_t);
866 internal_proto(read_a);
868 extern void read_a_char4 (st_parameter_dt *, const fnode *, char *, size_t);
869 internal_proto(read_a);
871 extern void read_f (st_parameter_dt *, const fnode *, char *, int);
872 internal_proto(read_f);
874 extern void read_l (st_parameter_dt *, const fnode *, char *, int);
875 internal_proto(read_l);
877 extern void read_x (st_parameter_dt *, size_t);
878 internal_proto(read_x);
880 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
881 internal_proto(read_radix);
883 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
884 internal_proto(read_decimal);
886 extern void read_user_defined (st_parameter_dt *, void *);
887 internal_proto(read_user_defined);
889 extern void read_user_defined (st_parameter_dt *, void *);
890 internal_proto(read_user_defined);
894 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
896 internal_proto(list_formatted_read);
898 extern void finish_list_read (st_parameter_dt *);
899 internal_proto(finish_list_read);
901 extern void namelist_read (st_parameter_dt *);
902 internal_proto(namelist_read);
904 extern void namelist_write (st_parameter_dt *);
905 internal_proto(namelist_write);
909 extern void write_a (st_parameter_dt *, const fnode *, const char *, size_t);
910 internal_proto(write_a);
912 extern void write_a_char4 (st_parameter_dt *, const fnode *, const char *, size_t);
913 internal_proto(write_a_char4);
915 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
916 internal_proto(write_b);
918 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
919 internal_proto(write_d);
921 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
922 internal_proto(write_e);
924 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
925 internal_proto(write_en);
927 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
928 internal_proto(write_es);
930 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
931 internal_proto(write_f);
933 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
934 internal_proto(write_i);
936 extern void write_l (st_parameter_dt *, const fnode *, char *, int);
937 internal_proto(write_l);
939 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
940 internal_proto(write_o);
942 extern void write_real (st_parameter_dt *, const char *, int);
943 internal_proto(write_real);
945 extern void write_real_w0 (st_parameter_dt *, const char *, int, format_token, int);
946 internal_proto(write_real_w0);
948 extern void write_x (st_parameter_dt *, int, int);
949 internal_proto(write_x);
951 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
952 internal_proto(write_z);
954 extern void write_user_defined (st_parameter_dt *, void *);
955 internal_proto(write_user_defined);
957 extern void write_user_defined (st_parameter_dt *, void *);
958 internal_proto(write_user_defined);
960 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
962 internal_proto(list_formatted_write);
964 /* size_from_kind.c */
965 extern size_t size_from_real_kind (int);
966 internal_proto(size_from_real_kind);
968 extern size_t size_from_complex_kind (int);
969 internal_proto(size_from_complex_kind);
973 extern void free_ionml (st_parameter_dt *);
974 internal_proto(free_ionml);
977 inc_waiting_locked (gfc_unit *u)
979 #ifdef HAVE_ATOMIC_FETCH_ADD
980 (void) __atomic_fetch_add (&u->waiting, 1, __ATOMIC_RELAXED);
987 predec_waiting_locked (gfc_unit *u)
989 #ifdef HAVE_ATOMIC_FETCH_ADD
990 /* Note that the pattern
992 if (predec_waiting_locked (u) == 0)
995 could be further optimized by making this be an __ATOMIC_RELEASE,
998 __atomic_thread_fence (__ATOMIC_ACQUIRE);
1000 inside the branch before destroying. But for now, lets keep it
1002 return __atomic_add_fetch (&u->waiting, -1, __ATOMIC_ACQ_REL);
1004 return --u->waiting;
1009 dec_waiting_unlocked (gfc_unit *u)
1011 #ifdef HAVE_ATOMIC_FETCH_ADD
1012 (void) __atomic_fetch_add (&u->waiting, -1, __ATOMIC_RELAXED);
1014 __gthread_mutex_lock (&unit_lock);
1016 __gthread_mutex_unlock (&unit_lock);
1022 memset4 (gfc_char4_t *p, gfc_char4_t c, int k)
1025 for (j = 0; j < k; j++)
1029 /* Used in width fields to indicate that the default should be used */
1030 #define DEFAULT_WIDTH -1
1032 /* Defaults for certain format field descriptors. These are decided based on
1033 * the type of the value being formatted.
1035 * The behaviour here is modelled on the Oracle Fortran compiler. At the time
1036 * of writing, the details were available at this URL:
1038 * https://docs.oracle.com/cd/E19957-01/805-4939/6j4m0vnc3/index.html#z4000743746d
1042 default_width_for_integer (int kind)
1056 default_width_for_float (int kind)
1068 default_precision_for_float (int kind)
1082 st_write_done_worker (st_parameter_dt *);
1083 internal_proto (st_write_done_worker);
1086 st_read_done_worker (st_parameter_dt *);
1087 internal_proto (st_read_done_worker);
1090 data_transfer_init_worker (st_parameter_dt *, int);
1091 internal_proto (data_transfer_init_worker);