libgfortran/io/io.h

   1 /* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   2    Free Software Foundation, Inc.
   3    Contributed by Andy Vaught
   4    F2003 I/O support contributed by Jerry DeLisle
   5
   6 This file is part of the GNU Fortran 95 runtime library (libgfortran).
   7
   8 Libgfortran is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 Libgfortran is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 Under Section 7 of GPL version 3, you are granted additional
  19 permissions described in the GCC Runtime Library Exception, version
  20 3.1, as published by the Free Software Foundation.
  21
  22 You should have received a copy of the GNU General Public License and
  23 a copy of the GCC Runtime Library Exception along with this program;
  24 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 <http://www.gnu.org/licenses/>.  */
  26
  27 #ifndef GFOR_IO_H
  28 #define GFOR_IO_H
  29
  30 /* IO library include.  */
  31
  32 #include "libgfortran.h"
  33
  34 #include <gthr.h>
  35
  36 /* Forward declarations.  */
  37 struct st_parameter_dt;
  38 typedef struct stream stream;
  39 struct fbuf;
  40 struct format_data;
  41 typedef struct fnode fnode;
  42 struct gfc_unit;
  43
  44
  45 /* Macros for testing what kinds of I/O we are doing.  */
  46
  47 #define is_array_io(dtp) ((dtp)->internal_unit_desc)
  48
  49 #define is_internal_unit(dtp) ((dtp)->u.p.unit_is_internal)
  50
  51 #define is_stream_io(dtp) ((dtp)->u.p.current_unit->flags.access == ACCESS_STREAM)
  52
  53 #define is_char4_unit(dtp) ((dtp)->u.p.unit_is_internal && (dtp)->common.unit)
  54
  55 /* The array_loop_spec contains the variables for the loops over index ranges
  56    that are encountered.  */
  57
  58 typedef struct array_loop_spec
  59 {
  60   /* Index counter for this dimension.  */
  61   index_type idx;
  62
  63   /* Start for the index counter.  */
  64   index_type start;
  65
  66   /* End for the index counter.  */
  67   index_type end;
  68
  69   /* Step for the index counter.  */
  70   index_type step;
  71 }
  72 array_loop_spec;
  73
  74 /* A stucture to build a hash table for format data.  */
  75
  76 #define FORMAT_HASH_SIZE 16
  77
  78 typedef struct format_hash_entry
  79 {
  80   char *key;
  81   gfc_charlen_type key_len;
  82   struct format_data *hashed_fmt;
  83 }
  84 format_hash_entry;
  85
  86 /* Representation of a namelist object in libgfortran
  87
  88    Namelist Records
  89       &GROUPNAME  OBJECT=value[s] [,OBJECT=value[s]].../
  90      or
  91       &GROUPNAME  OBJECT=value[s] [,OBJECT=value[s]]...&END
  92
  93    The object can be a fully qualified, compound name for an intrinsic
  94    type, derived types or derived type components.  So, a substring
  95    a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
  96    read. Hence full information about the structure of the object has
  97    to be available to list_read.c and write.
  98
  99    These requirements are met by the following data structures.
 100
 101    namelist_info type contains all the scalar information about the
 102    object and arrays of descriptor_dimension and array_loop_spec types for
 103    arrays.  */
 104
 105 typedef struct namelist_type
 106 {
 107   /* Object type.  */
 108   bt type;
 109
 110   /* Object name.  */
 111   char * var_name;
 112
 113   /* Address for the start of the object's data.  */
 114   void * mem_pos;
 115
 116   /* Flag to show that a read is to be attempted for this node.  */
 117   int touched;
 118
 119   /* Length of intrinsic type in bytes.  */
 120   int len;
 121
 122   /* Rank of the object.  */
 123   int var_rank;
 124
 125   /* Overall size of the object in bytes.  */
 126   index_type size;
 127
 128   /* Length of character string.  */
 129   index_type string_length;
 130
 131   descriptor_dimension * dim;
 132   array_loop_spec * ls;
 133   struct namelist_type * next;
 134 }
 135 namelist_info;
 136
 137 /* Options for the OPEN statement.  */
 138
 139 typedef enum
 140 { ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,
 141   ACCESS_UNSPECIFIED
 142 }
 143 unit_access;
 144
 145 typedef enum
 146 { ACTION_READ, ACTION_WRITE, ACTION_READWRITE,
 147   ACTION_UNSPECIFIED
 148 }
 149 unit_action;
 150
 151 typedef enum
 152 { BLANK_NULL, BLANK_ZERO, BLANK_UNSPECIFIED }
 153 unit_blank;
 154
 155 typedef enum
 156 { DELIM_NONE, DELIM_APOSTROPHE, DELIM_QUOTE,
 157   DELIM_UNSPECIFIED
 158 }
 159 unit_delim;
 160
 161 typedef enum
 162 { FORM_FORMATTED, FORM_UNFORMATTED, FORM_UNSPECIFIED }
 163 unit_form;
 164
 165 typedef enum
 166 { POSITION_ASIS, POSITION_REWIND, POSITION_APPEND,
 167   POSITION_UNSPECIFIED
 168 }
 169 unit_position;
 170
 171 typedef enum
 172 { STATUS_UNKNOWN, STATUS_OLD, STATUS_NEW, STATUS_SCRATCH,
 173   STATUS_REPLACE, STATUS_UNSPECIFIED
 174 }
 175 unit_status;
 176
 177 typedef enum
 178 { PAD_YES, PAD_NO, PAD_UNSPECIFIED }
 179 unit_pad;
 180
 181 typedef enum
 182 { DECIMAL_POINT, DECIMAL_COMMA, DECIMAL_UNSPECIFIED }
 183 unit_decimal;
 184
 185 typedef enum
 186 { ENCODING_UTF8, ENCODING_DEFAULT, ENCODING_UNSPECIFIED }
 187 unit_encoding;
 188
 189 typedef enum
 190 { ROUND_UP, ROUND_DOWN, ROUND_ZERO, ROUND_NEAREST, ROUND_COMPATIBLE,
 191   ROUND_PROCDEFINED, ROUND_UNSPECIFIED }
 192 unit_round;
 193
 194 /* NOTE: unit_sign must correspond with the sign_status enumerator in
 195    st_parameter_dt to not break the ABI.  */
 196 typedef enum
 197 { SIGN_PROCDEFINED, SIGN_SUPPRESS, SIGN_PLUS, SIGN_UNSPECIFIED }
 198 unit_sign;
 199
 200 typedef enum
 201 { ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }
 202 unit_advance;
 203
 204 typedef enum
 205 {READING, WRITING}
 206 unit_mode;
 207
 208 typedef enum
 209 { ASYNC_YES, ASYNC_NO, ASYNC_UNSPECIFIED }
 210 unit_async;
 211
 212 typedef enum
 213 { SIGN_S, SIGN_SS, SIGN_SP }
 214 unit_sign_s;
 215
 216 #define CHARACTER1(name) \
 217               char * name; \
 218               gfc_charlen_type name ## _len
 219 #define CHARACTER2(name) \
 220               gfc_charlen_type name ## _len; \
 221               char * name
 222
 223 typedef struct
 224 {
 225   st_parameter_common common;
 226   GFC_INTEGER_4 recl_in;
 227   CHARACTER2 (file);
 228   CHARACTER1 (status);
 229   CHARACTER2 (access);
 230   CHARACTER1 (form);
 231   CHARACTER2 (blank);
 232   CHARACTER1 (position);
 233   CHARACTER2 (action);
 234   CHARACTER1 (delim);
 235   CHARACTER2 (pad);
 236   CHARACTER1 (convert);
 237   CHARACTER2 (decimal);
 238   CHARACTER1 (encoding);
 239   CHARACTER2 (round);
 240   CHARACTER1 (sign);
 241   CHARACTER2 (asynchronous);
 242   GFC_INTEGER_4 *newunit;
 243 }
 244 st_parameter_open;
 245
 246 #define IOPARM_CLOSE_HAS_STATUS         (1 << 7)
 247
 248 typedef struct
 249 {
 250   st_parameter_common common;
 251   CHARACTER1 (status);
 252 }
 253 st_parameter_close;
 254
 255 typedef struct
 256 {
 257   st_parameter_common common;
 258 }
 259 st_parameter_filepos;
 260
 261 #define IOPARM_INQUIRE_HAS_EXIST        (1 << 7)
 262 #define IOPARM_INQUIRE_HAS_OPENED       (1 << 8)
 263 #define IOPARM_INQUIRE_HAS_NUMBER       (1 << 9)
 264 #define IOPARM_INQUIRE_HAS_NAMED        (1 << 10)
 265 #define IOPARM_INQUIRE_HAS_NEXTREC      (1 << 11)
 266 #define IOPARM_INQUIRE_HAS_RECL_OUT     (1 << 12)
 267 #define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)
 268 #define IOPARM_INQUIRE_HAS_FILE         (1 << 14)
 269 #define IOPARM_INQUIRE_HAS_ACCESS       (1 << 15)
 270 #define IOPARM_INQUIRE_HAS_FORM         (1 << 16)
 271 #define IOPARM_INQUIRE_HAS_BLANK        (1 << 17)
 272 #define IOPARM_INQUIRE_HAS_POSITION     (1 << 18)
 273 #define IOPARM_INQUIRE_HAS_ACTION       (1 << 19)
 274 #define IOPARM_INQUIRE_HAS_DELIM        (1 << 20)
 275 #define IOPARM_INQUIRE_HAS_PAD          (1 << 21)
 276 #define IOPARM_INQUIRE_HAS_NAME         (1 << 22)
 277 #define IOPARM_INQUIRE_HAS_SEQUENTIAL   (1 << 23)
 278 #define IOPARM_INQUIRE_HAS_DIRECT       (1 << 24)
 279 #define IOPARM_INQUIRE_HAS_FORMATTED    (1 << 25)
 280 #define IOPARM_INQUIRE_HAS_UNFORMATTED  (1 << 26)
 281 #define IOPARM_INQUIRE_HAS_READ         (1 << 27)
 282 #define IOPARM_INQUIRE_HAS_WRITE        (1 << 28)
 283 #define IOPARM_INQUIRE_HAS_READWRITE    (1 << 29)
 284 #define IOPARM_INQUIRE_HAS_CONVERT      (1 << 30)
 285 #define IOPARM_INQUIRE_HAS_FLAGS2       (1 << 31)
 286
 287 #define IOPARM_INQUIRE_HAS_ASYNCHRONOUS (1 << 0)
 288 #define IOPARM_INQUIRE_HAS_DECIMAL      (1 << 1)
 289 #define IOPARM_INQUIRE_HAS_ENCODING     (1 << 2)
 290 #define IOPARM_INQUIRE_HAS_ROUND        (1 << 3)
 291 #define IOPARM_INQUIRE_HAS_SIGN         (1 << 4)
 292 #define IOPARM_INQUIRE_HAS_PENDING      (1 << 5)
 293 #define IOPARM_INQUIRE_HAS_SIZE         (1 << 6)
 294 #define IOPARM_INQUIRE_HAS_ID           (1 << 7)
 295
 296 typedef struct
 297 {
 298   st_parameter_common common;
 299   GFC_INTEGER_4 *exist, *opened, *number, *named;
 300   GFC_INTEGER_4 *nextrec, *recl_out;
 301   GFC_IO_INT *strm_pos_out;
 302   CHARACTER1 (file);
 303   CHARACTER2 (access);
 304   CHARACTER1 (form);
 305   CHARACTER2 (blank);
 306   CHARACTER1 (position);
 307   CHARACTER2 (action);
 308   CHARACTER1 (delim);
 309   CHARACTER2 (pad);
 310   CHARACTER1 (name);
 311   CHARACTER2 (sequential);
 312   CHARACTER1 (direct);
 313   CHARACTER2 (formatted);
 314   CHARACTER1 (unformatted);
 315   CHARACTER2 (read);
 316   CHARACTER1 (write);
 317   CHARACTER2 (readwrite);
 318   CHARACTER1 (convert);
 319   GFC_INTEGER_4 flags2;
 320   CHARACTER1 (asynchronous);
 321   CHARACTER2 (decimal);
 322   CHARACTER1 (encoding);
 323   CHARACTER2 (round);
 324   CHARACTER1 (sign);
 325   GFC_INTEGER_4 *pending;
 326   GFC_IO_INT *size;
 327   GFC_INTEGER_4 *id;
 328 }
 329 st_parameter_inquire;
 330
 331
 332 #define IOPARM_DT_LIST_FORMAT                   (1 << 7)
 333 #define IOPARM_DT_NAMELIST_READ_MODE            (1 << 8)
 334 #define IOPARM_DT_HAS_REC                       (1 << 9)
 335 #define IOPARM_DT_HAS_SIZE                      (1 << 10)
 336 #define IOPARM_DT_HAS_IOLENGTH                  (1 << 11)
 337 #define IOPARM_DT_HAS_FORMAT                    (1 << 12)
 338 #define IOPARM_DT_HAS_ADVANCE                   (1 << 13)
 339 #define IOPARM_DT_HAS_INTERNAL_UNIT             (1 << 14)
 340 #define IOPARM_DT_HAS_NAMELIST_NAME             (1 << 15)
 341 #define IOPARM_DT_HAS_ID                        (1 << 16)
 342 #define IOPARM_DT_HAS_POS                       (1 << 17)
 343 #define IOPARM_DT_HAS_ASYNCHRONOUS              (1 << 18)
 344 #define IOPARM_DT_HAS_BLANK                     (1 << 19)
 345 #define IOPARM_DT_HAS_DECIMAL                   (1 << 20)
 346 #define IOPARM_DT_HAS_DELIM                     (1 << 21)
 347 #define IOPARM_DT_HAS_PAD                       (1 << 22)
 348 #define IOPARM_DT_HAS_ROUND                     (1 << 23)
 349 #define IOPARM_DT_HAS_SIGN                      (1 << 24)
 350 #define IOPARM_DT_HAS_F2003                     (1 << 25)
 351 /* Internal use bit.  */
 352 #define IOPARM_DT_IONML_SET                     (1 << 31)
 353
 354
 355 typedef struct st_parameter_dt
 356 {
 357   st_parameter_common common;
 358   GFC_IO_INT rec;
 359   GFC_IO_INT *size, *iolength;
 360   gfc_array_char *internal_unit_desc;
 361   CHARACTER1 (format);
 362   CHARACTER2 (advance);
 363   CHARACTER1 (internal_unit);
 364   CHARACTER2 (namelist_name);
 365   /* Private part of the structure.  The compiler just needs
 366      to reserve enough space.  */
 367   union
 368     {
 369       struct
 370         {
 371           void (*transfer) (struct st_parameter_dt *, bt, void *, int,
 372                             size_t, size_t);
 373           struct gfc_unit *current_unit;
 374           /* Item number in a formatted data transfer.  Also used in namelist
 375              read_logical as an index into line_buffer.  */
 376           int item_count;
 377           unit_mode mode;
 378           unit_blank blank_status;
 379           unit_sign sign_status;
 380           int scale_factor;
 381           int max_pos; /* Maximum righthand column written to.  */
 382           /* Number of skips + spaces to be done for T and X-editing.  */
 383           int skips;
 384           /* Number of spaces to be done for T and X-editing.  */
 385           int pending_spaces;
 386           /* Whether an EOR condition was encountered. Value is:
 387                0 if no EOR was encountered
 388                1 if an EOR was encountered due to a 1-byte marker (LF)
 389                2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
 390           int sf_seen_eor;
 391           unit_advance advance_status;
 392           unsigned reversion_flag : 1; /* Format reversion has occurred.  */
 393           unsigned first_item : 1;
 394           unsigned seen_dollar : 1;
 395           unsigned eor_condition : 1;
 396           unsigned no_leading_blank : 1;
 397           unsigned char_flag : 1;
 398           unsigned input_complete : 1;
 399           unsigned at_eol : 1;
 400           unsigned comma_flag : 1;
 401           /* A namelist specific flag used in the list directed library
 402              to flag that calls are being made from namelist read (eg. to
 403              ignore comments or to treat '/' as a terminator)  */
 404           unsigned namelist_mode : 1;
 405           /* A namelist specific flag used in the list directed library
 406              to flag read errors and return, so that an attempt can be
 407              made to read a new object name.  */
 408           unsigned nml_read_error : 1;
 409           /* A sequential formatted read specific flag used to signal that a
 410              character string is being read so don't use commas to shorten a
 411              formatted field width.  */
 412           unsigned sf_read_comma : 1;
 413           /* A namelist specific flag used to enable reading input from
 414              line_buffer for logical reads.  */
 415           unsigned line_buffer_enabled : 1;
 416           /* An internal unit specific flag used to identify that the associated
 417              unit is internal.  */
 418           unsigned unit_is_internal : 1;
 419           /* An internal unit specific flag to signify an EOF condition for list
 420              directed read.  */
 421           unsigned at_eof : 1;
 422           /* Used for g0 floating point output.  */
 423           unsigned g0_no_blanks : 1;
 424           /* Used to signal use of free_format_data.  */
 425           unsigned format_not_saved : 1;
 426           /* 14 unused bits.  */
 427
 428           /* Used for ungetc() style functionality. Possible values
 429              are an unsigned char, EOF, or EOF - 1 used to mark the
 430              field as not valid.  */
 431           int last_char;
 432           char nml_delim;
 433
 434           int repeat_count;
 435           int saved_length;
 436           int saved_used;
 437           bt saved_type;
 438           char *saved_string;
 439           char *scratch;
 440           char *line_buffer;
 441           struct format_data *fmt;
 442           namelist_info *ionml;
 443           /* A flag used to identify when a non-standard expanded namelist read
 444              has occurred.  */
 445           int expanded_read;
 446           /* Storage area for values except for strings.  Must be
 447              large enough to hold a complex value (two reals) of the
 448              largest kind.  */
 449           char value[32];
 450           GFC_IO_INT size_used;
 451         } p;
 452       /* This pad size must be equal to the pad_size declared in
 453          trans-io.c (gfc_build_io_library_fndecls).  The above structure
 454          must be smaller or equal to this array.  */
 455       char pad[16 * sizeof (char *) + 32 * sizeof (int)];
 456     } u;
 457   GFC_INTEGER_4 *id;
 458   GFC_IO_INT pos;
 459   CHARACTER1 (asynchronous);
 460   CHARACTER2 (blank);
 461   CHARACTER1 (decimal);
 462   CHARACTER2 (delim);
 463   CHARACTER1 (pad);
 464   CHARACTER2 (round);
 465   CHARACTER1 (sign);
 466 }
 467 st_parameter_dt;
 468
 469 /* Ensure st_parameter_dt's u.pad is bigger or equal to u.p.  */
 470 extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
 471                                   >= sizeof (((st_parameter_dt *) 0)->u.p)
 472                                   ? 1 : -1];
 473
 474 #define IOPARM_WAIT_HAS_ID              (1 << 7)
 475
 476 typedef struct
 477 {
 478   st_parameter_common common;
 479   CHARACTER1 (id);
 480 }
 481 st_parameter_wait;
 482
 483
 484 #undef CHARACTER1
 485 #undef CHARACTER2
 486
 487 typedef struct
 488 {
 489   unit_access access;
 490   unit_action action;
 491   unit_blank blank;
 492   unit_delim delim;
 493   unit_form form;
 494   int is_notpadded;
 495   unit_position position;
 496   unit_status status;
 497   unit_pad pad;
 498   unit_convert convert;
 499   int has_recl;
 500   unit_decimal decimal;
 501   unit_encoding encoding;
 502   unit_round round;
 503   unit_sign sign;
 504   unit_async async;
 505 }
 506 unit_flags;
 507
 508
 509 typedef struct gfc_unit
 510 {
 511   int unit_number;
 512   stream *s;
 513
 514   /* Treap links.  */
 515   struct gfc_unit *left, *right;
 516   int priority;
 517
 518   int read_bad, current_record, saved_pos, previous_nonadvancing_write;
 519
 520   enum
 521   { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
 522   endfile;
 523
 524   unit_mode mode;
 525   unit_flags flags;
 526   unit_pad pad_status;
 527   unit_decimal decimal_status;
 528   unit_delim delim_status;
 529   unit_round round_status;
 530
 531   /* recl                 -- Record length of the file.
 532      last_record          -- Last record number read or written
 533      maxrec               -- Maximum record number in a direct access file
 534      bytes_left           -- Bytes left in current record.
 535      strm_pos             -- Current position in file for STREAM I/O.
 536      recl_subrecord       -- Maximum length for subrecord.
 537      bytes_left_subrecord -- Bytes left in current subrecord.  */
 538   gfc_offset recl, last_record, maxrec, bytes_left, strm_pos,
 539     recl_subrecord, bytes_left_subrecord;
 540
 541   /* Set to 1 if we have read a subrecord.  */
 542
 543   int continued;
 544
 545   __gthread_mutex_t lock;
 546   /* Number of threads waiting to acquire this unit's lock.
 547      When non-zero, close_unit doesn't only removes the unit
 548      from the UNIT_ROOT tree, but doesn't free it and the
 549      last of the waiting threads will do that.
 550      This must be either atomically increased/decreased, or
 551      always guarded by UNIT_LOCK.  */
 552   int waiting;
 553   /* Flag set by close_unit if the unit as been closed.
 554      Must be manipulated under unit's lock.  */
 555   int closed;
 556
 557   /* For traversing arrays */
 558   array_loop_spec *ls;
 559   int rank;
 560
 561   int file_len;
 562   char *file;
 563
 564   /* The format hash table.  */
 565   struct format_hash_entry format_hash_table[FORMAT_HASH_SIZE];
 566
 567   /* Formatting buffer.  */
 568   struct fbuf *fbuf;
 569 }
 570 gfc_unit;
 571
 572
 573 /* unit.c */
 574
 575 /* Maximum file offset, computed at library initialization time.  */
 576 extern gfc_offset max_offset;
 577 internal_proto(max_offset);
 578
 579 /* Unit number to be assigned when NEWUNIT is used in an OPEN statement.  */
 580 extern GFC_INTEGER_4 next_available_newunit;
 581 internal_proto(next_available_newunit);
 582
 583 /* Unit tree root.  */
 584 extern gfc_unit *unit_root;
 585 internal_proto(unit_root);
 586
 587 extern __gthread_mutex_t unit_lock;
 588 internal_proto(unit_lock);
 589
 590 extern int close_unit (gfc_unit *);
 591 internal_proto(close_unit);
 592
 593 extern gfc_unit *get_internal_unit (st_parameter_dt *);
 594 internal_proto(get_internal_unit);
 595
 596 extern void free_internal_unit (st_parameter_dt *);
 597 internal_proto(free_internal_unit);
 598
 599 extern gfc_unit *find_unit (int);
 600 internal_proto(find_unit);
 601
 602 extern gfc_unit *find_or_create_unit (int);
 603 internal_proto(find_or_create_unit);
 604
 605 extern gfc_unit *get_unit (st_parameter_dt *, int);
 606 internal_proto(get_unit);
 607
 608 extern void unlock_unit (gfc_unit *);
 609 internal_proto(unlock_unit);
 610
 611 extern void update_position (gfc_unit *);
 612 internal_proto(update_position);
 613
 614 extern void finish_last_advance_record (gfc_unit *u);
 615 internal_proto (finish_last_advance_record);
 616
 617 extern int unit_truncate (gfc_unit *, gfc_offset, st_parameter_common *);
 618 internal_proto (unit_truncate);
 619
 620 extern GFC_INTEGER_4 get_unique_unit_number (st_parameter_open *);
 621 internal_proto(get_unique_unit_number);
 622
 623 /* open.c */
 624
 625 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
 626 internal_proto(new_unit);
 627
 628
 629 /* transfer.c */
 630
 631 #define SCRATCH_SIZE 300
 632
 633 extern const char *type_name (bt);
 634 internal_proto(type_name);
 635
 636 extern void * read_block_form (st_parameter_dt *, int *);
 637 internal_proto(read_block_form);
 638
 639 extern void * read_block_form4 (st_parameter_dt *, int *);
 640 internal_proto(read_block_form4);
 641
 642 extern void *write_block (st_parameter_dt *, int);
 643 internal_proto(write_block);
 644
 645 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *,
 646                                      int*);
 647 internal_proto(next_array_record);
 648
 649 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *,
 650                                   gfc_offset *);
 651 internal_proto(init_loop_spec);
 652
 653 extern void next_record (st_parameter_dt *, int);
 654 internal_proto(next_record);
 655
 656 extern void reverse_memcpy (void *, const void *, size_t);
 657 internal_proto (reverse_memcpy);
 658
 659 extern void st_wait (st_parameter_wait *);
 660 export_proto(st_wait);
 661
 662 extern void hit_eof (st_parameter_dt *);
 663 internal_proto(hit_eof);
 664
 665 /* read.c */
 666
 667 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
 668 internal_proto(set_integer);
 669
 670 extern GFC_UINTEGER_LARGEST max_value (int, int);
 671 internal_proto(max_value);
 672
 673 extern int convert_real (st_parameter_dt *, void *, const char *, int);
 674 internal_proto(convert_real);
 675
 676 extern int convert_infnan (st_parameter_dt *, void *, const char *, int);
 677 internal_proto(convert_infnan);
 678
 679 extern void read_a (st_parameter_dt *, const fnode *, char *, int);
 680 internal_proto(read_a);
 681
 682 extern void read_a_char4 (st_parameter_dt *, const fnode *, char *, int);
 683 internal_proto(read_a);
 684
 685 extern void read_f (st_parameter_dt *, const fnode *, char *, int);
 686 internal_proto(read_f);
 687
 688 extern void read_l (st_parameter_dt *, const fnode *, char *, int);
 689 internal_proto(read_l);
 690
 691 extern void read_x (st_parameter_dt *, int);
 692 internal_proto(read_x);
 693
 694 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
 695 internal_proto(read_radix);
 696
 697 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
 698 internal_proto(read_decimal);
 699
 700 /* list_read.c */
 701
 702 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
 703                                  size_t);
 704 internal_proto(list_formatted_read);
 705
 706 extern void finish_list_read (st_parameter_dt *);
 707 internal_proto(finish_list_read);
 708
 709 extern void namelist_read (st_parameter_dt *);
 710 internal_proto(namelist_read);
 711
 712 extern void namelist_write (st_parameter_dt *);
 713 internal_proto(namelist_write);
 714
 715 /* write.c */
 716
 717 extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
 718 internal_proto(write_a);
 719
 720 extern void write_a_char4 (st_parameter_dt *, const fnode *, const char *, int);
 721 internal_proto(write_a_char4);
 722
 723 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
 724 internal_proto(write_b);
 725
 726 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
 727 internal_proto(write_d);
 728
 729 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
 730 internal_proto(write_e);
 731
 732 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
 733 internal_proto(write_en);
 734
 735 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
 736 internal_proto(write_es);
 737
 738 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
 739 internal_proto(write_f);
 740
 741 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
 742 internal_proto(write_i);
 743
 744 extern void write_l (st_parameter_dt *, const fnode *, char *, int);
 745 internal_proto(write_l);
 746
 747 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
 748 internal_proto(write_o);
 749
 750 extern void write_real (st_parameter_dt *, const char *, int);
 751 internal_proto(write_real);
 752
 753 extern void write_real_g0 (st_parameter_dt *, const char *, int, int);
 754 internal_proto(write_real_g0);
 755
 756 extern void write_x (st_parameter_dt *, int, int);
 757 internal_proto(write_x);
 758
 759 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
 760 internal_proto(write_z);
 761
 762 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
 763                                   size_t);
 764 internal_proto(list_formatted_write);
 765
 766 /* size_from_kind.c */
 767 extern size_t size_from_real_kind (int);
 768 internal_proto(size_from_real_kind);
 769
 770 extern size_t size_from_complex_kind (int);
 771 internal_proto(size_from_complex_kind);
 772
 773
 774 /* lock.c */
 775 extern void free_ionml (st_parameter_dt *);
 776 internal_proto(free_ionml);
 777
 778 static inline void
 779 inc_waiting_locked (gfc_unit *u)
 780 {
 781 #ifdef HAVE_SYNC_FETCH_AND_ADD
 782   (void) __sync_fetch_and_add (&u->waiting, 1);
 783 #else
 784   u->waiting++;
 785 #endif
 786 }
 787
 788 static inline int
 789 predec_waiting_locked (gfc_unit *u)
 790 {
 791 #ifdef HAVE_SYNC_FETCH_AND_ADD
 792   return __sync_add_and_fetch (&u->waiting, -1);
 793 #else
 794   return --u->waiting;
 795 #endif
 796 }
 797
 798 static inline void
 799 dec_waiting_unlocked (gfc_unit *u)
 800 {
 801 #ifdef HAVE_SYNC_FETCH_AND_ADD
 802   (void) __sync_fetch_and_add (&u->waiting, -1);
 803 #else
 804   __gthread_mutex_lock (&unit_lock);
 805   u->waiting--;
 806   __gthread_mutex_unlock (&unit_lock);
 807 #endif
 808 }
 809
 810 #endif
 811