git.libre-soc.org Git - gcc.git/blob

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)

10 any later version.

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/>. */

26 #ifndef GFOR_IO_H

27 #define GFOR_IO_H

29 /* IO library include. */

31 #include "libgfortran.h"

33 #include <gthr.h>

36 /* POSIX 2008 specifies that the extended locale stuff is found in

37 locale.h, but some systems have them in xlocale.h. */

39 #include <locale.h>

41 #ifdef HAVE_XLOCALE_H

42 #include <xlocale.h>

43 #endif

46 /* Forward declarations. */

47 struct st_parameter_dt;

48 typedef struct stream stream;

49 struct fbuf;

50 struct format_data;

51 typedef struct fnode fnode;

52 struct gfc_unit;

54 #ifdef HAVE_NEWLOCALE

55 /* We have POSIX 2008 extended locale stuff. */

56 extern locale_t c_locale;

57 internal_proto(c_locale);

58 #else

59 extern char* old_locale;

60 internal_proto(old_locale);

61 extern int old_locale_ctr;

62 internal_proto(old_locale_ctr);

63 extern __gthread_mutex_t old_locale_lock;

64 internal_proto(old_locale_lock);

65 #endif

68 /* Macros for testing what kinds of I/O we are doing. */

70 #define is_array_io(dtp) ((dtp)->internal_unit_desc)

72 #define is_internal_unit(dtp) ((dtp)->u.p.current_unit->internal_unit_kind)

74 #define is_stream_io(dtp) ((dtp)->u.p.current_unit->flags.access == ACCESS_STREAM)

76 #define is_char4_unit(dtp) ((dtp)->u.p.current_unit->internal_unit_kind == 4)

78 /* The array_loop_spec contains the variables for the loops over index ranges

79 that are encountered. */

81 typedef struct array_loop_spec

82 {

83 /* Index counter for this dimension. */

84 index_type idx;

86 /* Start for the index counter. */

87 index_type start;

89 /* End for the index counter. */

90 index_type end;

92 /* Step for the index counter. */

93 index_type step;

94 }

95 array_loop_spec;

97 /* User defined input/output iomsg length. */

99 #define IOMSG_LEN 256

100

101 /* Subroutine formatted_dtio (struct, unit, iotype, v_list, iostat,

102 iomsg, (_iotype), (_iomsg)) */

103 typedef void (*formatted_dtio)(void *, GFC_INTEGER_4 *, char *, gfc_array_i4 *,

104 GFC_INTEGER_4 *, char *,

105 gfc_charlen_type, gfc_charlen_type);

106

107 /* Subroutine unformatted_dtio (struct, unit, iostat, iomsg, (_iomsg)) */

108 typedef void (*unformatted_dtio)(void *, GFC_INTEGER_4 *, GFC_INTEGER_4 *,

109 char *, gfc_charlen_type);

110

111 /* The dtio calls for namelist require a CLASS object to be built. */

112 typedef struct gfc_class

113 {

114 void *data;

115 void *vptr;

116 index_type len;

117 }

118 gfc_class;

119

120

121 /* A structure to build a hash table for format data. */

122

123 #define FORMAT_HASH_SIZE 16

124

125 typedef struct format_hash_entry

126 {

127 char *key;

128 gfc_charlen_type key_len;

129 struct format_data *hashed_fmt;

130 }

131 format_hash_entry;

132

133 /* Representation of a namelist object in libgfortran

134

135 Namelist Records

136 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../

137 or

138 &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END

139

140 The object can be a fully qualified, compound name for an intrinsic

141 type, derived types or derived type components. So, a substring

142 a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist

143 read. Hence full information about the structure of the object has

144 to be available to list_read.c and write.

145

146 These requirements are met by the following data structures.

147

148 namelist_info type contains all the scalar information about the

149 object and arrays of descriptor_dimension and array_loop_spec types for

150 arrays. */

151

152 typedef struct namelist_type

153 {

154 /* Object type. */

155 bt type;

156

157 /* Object name. */

158 char * var_name;

159

160 /* Address for the start of the object's data. */

161 void * mem_pos;

162

163 /* Address of specific DTIO subroutine. */

164 void * dtio_sub;

165

166 /* Address of vtable if dtio_sub non-null. */

167 void * vtable;

168

169 /* Flag to show that a read is to be attempted for this node. */

170 int touched;

171

172 /* Length of intrinsic type in bytes. */

173 int len;

174

175 /* Rank of the object. */

176 int var_rank;

177

178 /* Overall size of the object in bytes. */

179 index_type size;

180

181 /* Length of character string. */

182 index_type string_length;

183

184 descriptor_dimension * dim;

185 array_loop_spec * ls;

186 struct namelist_type * next;

187 }

188 namelist_info;

189

190 /* Options for the OPEN statement. */

191

192 typedef enum

193 { ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,

194 ACCESS_UNSPECIFIED

195 }

196 unit_access;

197

198 typedef enum

199 { ACTION_READ, ACTION_WRITE, ACTION_READWRITE,

200 ACTION_UNSPECIFIED

201 }

202 unit_action;

203

204 typedef enum

205 { BLANK_NULL, BLANK_ZERO, BLANK_UNSPECIFIED }

206 unit_blank;

207

208 typedef enum

209 { DELIM_NONE, DELIM_APOSTROPHE, DELIM_QUOTE,

210 DELIM_UNSPECIFIED

211 }

212 unit_delim;

213

214 typedef enum

215 { FORM_FORMATTED, FORM_UNFORMATTED, FORM_UNSPECIFIED }

216 unit_form;

217

218 typedef enum

219 { POSITION_ASIS, POSITION_REWIND, POSITION_APPEND,

220 POSITION_UNSPECIFIED

221 }

222 unit_position;

223

224 typedef enum

225 { STATUS_UNKNOWN, STATUS_OLD, STATUS_NEW, STATUS_SCRATCH,

226 STATUS_REPLACE, STATUS_UNSPECIFIED

227 }

228 unit_status;

229

230 typedef enum

231 { PAD_YES, PAD_NO, PAD_UNSPECIFIED }

232 unit_pad;

233

234 typedef enum

235 { DECIMAL_POINT, DECIMAL_COMMA, DECIMAL_UNSPECIFIED }

236 unit_decimal;

237

238 typedef enum

239 { ENCODING_UTF8, ENCODING_DEFAULT, ENCODING_UNSPECIFIED }

240 unit_encoding;

241

242 typedef enum

243 { ROUND_UP = GFC_FPE_UPWARD,

244 ROUND_DOWN = GFC_FPE_DOWNWARD,

245 ROUND_ZERO = GFC_FPE_TOWARDZERO,

246 ROUND_NEAREST = GFC_FPE_TONEAREST,

247 ROUND_COMPATIBLE = 10, /* round away from zero. */

248 ROUND_PROCDEFINED, /* Here as ROUND_NEAREST. */

249 ROUND_UNSPECIFIED /* Should never occur. */

250 }

251 unit_round;

252

253 /* NOTE: unit_sign must correspond with the sign_status enumerator in

254 st_parameter_dt to not break the ABI. */

255 typedef enum

256 { SIGN_PROCDEFINED, SIGN_SUPPRESS, SIGN_PLUS, SIGN_UNSPECIFIED }

257 unit_sign;

258

259 typedef enum

260 { ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }

261 unit_advance;

262

263 typedef enum

264 {READING, WRITING, LIST_READING, LIST_WRITING}

265 unit_mode;

266

267 typedef enum

268 { ASYNC_YES, ASYNC_NO, ASYNC_UNSPECIFIED }

269 unit_async;

270

271 typedef enum

272 { SHARE_DENYRW, SHARE_DENYNONE,

273 SHARE_UNSPECIFIED

274 }

275 unit_share;

276

277 typedef enum

278 { CC_LIST, CC_FORTRAN, CC_NONE,

279 CC_UNSPECIFIED

280 }

281 unit_cc;

282

283 /* End-of-record types for CC_FORTRAN. */

284 typedef enum

285 { CCF_DEFAULT=0x0,

286 CCF_OVERPRINT=0x1,

287 CCF_ONE_LF=0x2,

288 CCF_TWO_LF=0x4,

289 CCF_PAGE_FEED=0x8,

290 CCF_PROMPT=0x10,

291 CCF_OVERPRINT_NOA=0x20,

292 } /* 6 bits */

293 cc_fortran;

294

295 typedef enum

296 { SIGN_S, SIGN_SS, SIGN_SP }

297 unit_sign_s;

298

299 /* Make sure to keep st_parameter_* in sync with gcc/fortran/ioparm.def. */

300

301 #define CHARACTER1(name) \

302 char * name; \

303 gfc_charlen_type name ## _len

304 #define CHARACTER2(name) \

305 gfc_charlen_type name ## _len; \

306 char * name

307

308 typedef struct

309 {

310 st_parameter_common common;

311 GFC_IO_INT recl_in;

312 CHARACTER2 (file);

313 CHARACTER1 (status);

314 CHARACTER2 (access);

315 CHARACTER1 (form);

316 CHARACTER2 (blank);

317 CHARACTER1 (position);

318 CHARACTER2 (action);

319 CHARACTER1 (delim);

320 CHARACTER2 (pad);

321 CHARACTER1 (convert);

322 CHARACTER2 (decimal);

323 CHARACTER1 (encoding);

324 CHARACTER2 (round);

325 CHARACTER1 (sign);

326 CHARACTER2 (asynchronous);

327 GFC_INTEGER_4 *newunit;

328 GFC_INTEGER_4 readonly;

329 CHARACTER2 (cc);

330 CHARACTER1 (share);

331 }

332 st_parameter_open;

333

334 #define IOPARM_CLOSE_HAS_STATUS (1 << 7)

335

336 typedef struct

337 {

338 st_parameter_common common;

339 CHARACTER1 (status);

340 }

341 st_parameter_close;

342

343 typedef struct

344 {

345 st_parameter_common common;

346 }

347 st_parameter_filepos;

348

349 #define IOPARM_INQUIRE_HAS_EXIST (1 << 7)

350 #define IOPARM_INQUIRE_HAS_OPENED (1 << 8)

351 #define IOPARM_INQUIRE_HAS_NUMBER (1 << 9)

352 #define IOPARM_INQUIRE_HAS_NAMED (1 << 10)

353 #define IOPARM_INQUIRE_HAS_NEXTREC (1 << 11)

354 #define IOPARM_INQUIRE_HAS_RECL_OUT (1 << 12)

355 #define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)

356 #define IOPARM_INQUIRE_HAS_FILE (1 << 14)

357 #define IOPARM_INQUIRE_HAS_ACCESS (1 << 15)

358 #define IOPARM_INQUIRE_HAS_FORM (1 << 16)

359 #define IOPARM_INQUIRE_HAS_BLANK (1 << 17)

360 #define IOPARM_INQUIRE_HAS_POSITION (1 << 18)

361 #define IOPARM_INQUIRE_HAS_ACTION (1 << 19)

362 #define IOPARM_INQUIRE_HAS_DELIM (1 << 20)

363 #define IOPARM_INQUIRE_HAS_PAD (1 << 21)

364 #define IOPARM_INQUIRE_HAS_NAME (1 << 22)

365 #define IOPARM_INQUIRE_HAS_SEQUENTIAL (1 << 23)

366 #define IOPARM_INQUIRE_HAS_DIRECT (1 << 24)

367 #define IOPARM_INQUIRE_HAS_FORMATTED (1 << 25)

368 #define IOPARM_INQUIRE_HAS_UNFORMATTED (1 << 26)

369 #define IOPARM_INQUIRE_HAS_READ (1 << 27)

370 #define IOPARM_INQUIRE_HAS_WRITE (1 << 28)

371 #define IOPARM_INQUIRE_HAS_READWRITE (1 << 29)

372 #define IOPARM_INQUIRE_HAS_CONVERT (1 << 30)

373 #define IOPARM_INQUIRE_HAS_FLAGS2 (1u << 31)

374

375 #define IOPARM_INQUIRE_HAS_ASYNCHRONOUS (1 << 0)

376 #define IOPARM_INQUIRE_HAS_DECIMAL (1 << 1)

377 #define IOPARM_INQUIRE_HAS_ENCODING (1 << 2)

378 #define IOPARM_INQUIRE_HAS_ROUND (1 << 3)

379 #define IOPARM_INQUIRE_HAS_SIGN (1 << 4)

380 #define IOPARM_INQUIRE_HAS_PENDING (1 << 5)

381 #define IOPARM_INQUIRE_HAS_SIZE (1 << 6)

382 #define IOPARM_INQUIRE_HAS_ID (1 << 7)

383 #define IOPARM_INQUIRE_HAS_IQSTREAM (1 << 8)

384 #define IOPARM_INQUIRE_HAS_SHARE (1 << 9)

385 #define IOPARM_INQUIRE_HAS_CC (1 << 10)

386

387 typedef struct

388 {

389 st_parameter_common common;

390 GFC_INTEGER_4 *exist, *opened, *number, *named;

391 GFC_IO_INT *nextrec, *recl_out, *strm_pos_out;

392 CHARACTER1 (file);

393 CHARACTER2 (access);

394 CHARACTER1 (form);

395 CHARACTER2 (blank);

396 CHARACTER1 (position);

397 CHARACTER2 (action);

398 CHARACTER1 (delim);

399 CHARACTER2 (pad);

400 CHARACTER1 (name);

401 CHARACTER2 (sequential);

402 CHARACTER1 (direct);

403 CHARACTER2 (formatted);

404 CHARACTER1 (unformatted);

405 CHARACTER2 (read);

406 CHARACTER1 (write);

407 CHARACTER2 (readwrite);

408 CHARACTER1 (convert);

409 GFC_INTEGER_4 flags2;

410 CHARACTER1 (asynchronous);

411 CHARACTER2 (decimal);

412 CHARACTER1 (encoding);

413 CHARACTER2 (round);

414 CHARACTER1 (sign);

415 GFC_INTEGER_4 *pending;

416 GFC_IO_INT *size;

417 GFC_INTEGER_4 *id;

418 CHARACTER1 (iqstream);

419 CHARACTER2 (share);

420 CHARACTER1 (cc);

421 }

422 st_parameter_inquire;

423

424

425 #define IOPARM_DT_LIST_FORMAT (1 << 7)

426 #define IOPARM_DT_NAMELIST_READ_MODE (1 << 8)

427 #define IOPARM_DT_HAS_REC (1 << 9)

428 #define IOPARM_DT_HAS_SIZE (1 << 10)

429 #define IOPARM_DT_HAS_IOLENGTH (1 << 11)

430 #define IOPARM_DT_HAS_FORMAT (1 << 12)

431 #define IOPARM_DT_HAS_ADVANCE (1 << 13)

432 #define IOPARM_DT_HAS_INTERNAL_UNIT (1 << 14)

433 #define IOPARM_DT_HAS_NAMELIST_NAME (1 << 15)

434 #define IOPARM_DT_HAS_ID (1 << 16)

435 #define IOPARM_DT_HAS_POS (1 << 17)

436 #define IOPARM_DT_HAS_ASYNCHRONOUS (1 << 18)

437 #define IOPARM_DT_HAS_BLANK (1 << 19)

438 #define IOPARM_DT_HAS_DECIMAL (1 << 20)

439 #define IOPARM_DT_HAS_DELIM (1 << 21)

440 #define IOPARM_DT_HAS_PAD (1 << 22)

441 #define IOPARM_DT_HAS_ROUND (1 << 23)

442 #define IOPARM_DT_HAS_SIGN (1 << 24)

443 #define IOPARM_DT_HAS_F2003 (1 << 25)

444 #define IOPARM_DT_HAS_UDTIO (1 << 26)

445 #define IOPARM_DT_DEFAULT_EXP (1 << 27)

446 /* Internal use bit. */

447 #define IOPARM_DT_IONML_SET (1u << 31)

448

449

450 typedef struct st_parameter_dt

451 {

452 st_parameter_common common;

453 GFC_IO_INT rec;

454 GFC_IO_INT *size, *iolength;

455 gfc_array_char *internal_unit_desc;

456 CHARACTER1 (format);

457 CHARACTER2 (advance);

458 CHARACTER1 (internal_unit);

459 CHARACTER2 (namelist_name);

460 GFC_INTEGER_4 *id;

461 GFC_IO_INT pos;

462 CHARACTER1 (asynchronous);

463 CHARACTER2 (blank);

464 CHARACTER1 (decimal);

465 CHARACTER2 (delim);

466 CHARACTER1 (pad);

467 CHARACTER2 (round);

468 CHARACTER1 (sign);

469 /* Private part of the structure. The compiler just needs

470 to reserve enough space. */

471 union

472 {

473 struct

474 {

475 void (*transfer) (struct st_parameter_dt *, bt, void *, int,

476 size_t, size_t);

477 struct gfc_unit *current_unit;

478 /* Item number in a formatted data transfer. Also used in namelist

479 read_logical as an index into line_buffer. */

480 int item_count;

481 unit_mode mode;

482 unit_blank blank_status;

483 unit_sign sign_status;

484 int scale_factor;

485 /* Maximum righthand column written to. */

486 int max_pos;

487 /* Number of skips + spaces to be done for T and X-editing. */

488 int skips;

489 /* Number of spaces to be done for T and X-editing. */

490 int pending_spaces;

491 /* Whether an EOR condition was encountered. Value is:

492 0 if no EOR was encountered

493 1 if an EOR was encountered due to a 1-byte marker (LF)

494 2 if an EOR was encountered due to a 2-bytes marker (CRLF) */

495 int sf_seen_eor;

496 unit_advance advance_status;

497 unsigned reversion_flag : 1; /* Format reversion has occurred. */

498 unsigned first_item : 1;

499 unsigned seen_dollar : 1;

500 unsigned eor_condition : 1;

501 unsigned no_leading_blank : 1;

502 unsigned char_flag : 1;

503 unsigned input_complete : 1;

504 unsigned at_eol : 1;

505 unsigned comma_flag : 1;

506 /* A namelist specific flag used in the list directed library

507 to flag that calls are being made from namelist read (e.g. to

508 ignore comments or to treat '/' as a terminator) */

509 unsigned namelist_mode : 1;

510 /* A namelist specific flag used in the list directed library

511 to flag read errors and return, so that an attempt can be

512 made to read a new object name. */

513 unsigned nml_read_error : 1;

514 /* A sequential formatted read specific flag used to signal that a

515 character string is being read so don't use commas to shorten a

516 formatted field width. */

517 unsigned sf_read_comma : 1;

518 /* A namelist specific flag used to enable reading input from

519 line_buffer for logical reads. */

520 unsigned line_buffer_enabled : 1;

521 /* An internal unit specific flag used to identify that the associated

522 unit is internal. */

523 unsigned unit_is_internal : 1;

524 /* An internal unit specific flag to signify an EOF condition for list

525 directed read. */

526 unsigned at_eof : 1;

527 /* Used for g0 floating point output. */

528 unsigned g0_no_blanks : 1;

529 /* Used to signal use of free_format_data. */

530 unsigned format_not_saved : 1;

531 /* A flag used to identify when a non-standard expanded namelist read

532 has occurred. */

533 unsigned expanded_read : 1;

534 /* 13 unused bits. */

535

536 int child_saved_iostat;

537 int nml_delim;

538 int repeat_count;

539 int saved_length;

540 int saved_used;

541 bt saved_type;

542 char *saved_string;

543 char *scratch;

544 char *line_buffer;

545 struct format_data *fmt;

546 namelist_info *ionml;

547 #ifdef HAVE_NEWLOCALE

548 locale_t old_locale;

549 #endif

550 /* Current position within the look-ahead line buffer. */

551 int line_buffer_pos;

552 /* Storage area for values except for strings. Must be

553 large enough to hold a complex value (two reals) of the

554 largest kind. */

555 char value[32];

556 GFC_IO_INT not_used; /* Needed for alignment. */

557 formatted_dtio fdtio_ptr;

558 unformatted_dtio ufdtio_ptr;

559 /* With CC_FORTRAN, the first character of a record determines the

560 style of record end (and start) to use. We must mark down the type

561 when we write first in write_a so we remember the end type later in

562 next_record_w. */

563 struct

564 {

565 unsigned type : 6; /* See enum cc_fortran. */

566 unsigned len : 2; /* Always 0, 1, or 2. */

567 /* The union is updated after start-of-record is written. */

568 union

569 {

570 char start; /* Output character for start of record. */

571 char end; /* Output character for end of record. */

572 } u;

573 } cc;

574 } p;

575 /* This pad size must be equal to the pad_size declared in

576 trans-io.c (gfc_build_io_library_fndecls). The above structure

577 must be smaller or equal to this array. */

578 char pad[16 * sizeof (char *) + 32 * sizeof (int)];

579 } u;

580 }

581 st_parameter_dt;

582

583 /* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */

584 extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)

585 >= sizeof (((st_parameter_dt *) 0)->u.p)

586 ? 1 : -1];

587

588 #define IOPARM_WAIT_HAS_ID (1 << 7)

589

590 typedef struct

591 {

592 st_parameter_common common;

593 CHARACTER1 (id);

594 }

595 st_parameter_wait;

596

597

598 #undef CHARACTER1

599 #undef CHARACTER2

600

601 typedef struct

602 {

603 unit_access access;

604 unit_action action;

605 unit_blank blank;

606 unit_delim delim;

607 unit_form form;

608 int is_notpadded;

609 unit_position position;

610 unit_status status;

611 unit_pad pad;

612 unit_convert convert;

613 int has_recl;

614 unit_decimal decimal;

615 unit_encoding encoding;

616 unit_round round;

617 unit_sign sign;

618 unit_async async;

619 unit_share share;

620 unit_cc cc;

621 int readonly;

622 }

623 unit_flags;

624

625

626 typedef struct gfc_unit

627 {

628 int unit_number;

629 stream *s;

630

631 /* Treap links. */

632 struct gfc_unit *left, *right;

633 int priority;

634

635 int read_bad, current_record, saved_pos, previous_nonadvancing_write;

636

637 enum

638 { NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }

639 endfile;

640

641 unit_mode mode;

642 unit_flags flags;

643 unit_pad pad_status;

644 unit_decimal decimal_status;

645 unit_delim delim_status;

646 unit_round round_status;

647

648 /* recl -- Record length of the file.

649 last_record -- Last record number read or written

650 maxrec -- Maximum record number in a direct access file

651 bytes_left -- Bytes left in current record.

652 strm_pos -- Current position in file for STREAM I/O.

653 recl_subrecord -- Maximum length for subrecord.

654 bytes_left_subrecord -- Bytes left in current subrecord. */

655 gfc_offset recl, last_record, maxrec, bytes_left, strm_pos,

656 recl_subrecord, bytes_left_subrecord;

657

658 /* Set to 1 if we have read a subrecord. */

659

660 int continued;

661

662 __gthread_mutex_t lock;

663 /* Number of threads waiting to acquire this unit's lock.

664 When non-zero, close_unit doesn't only removes the unit

665 from the UNIT_ROOT tree, but doesn't free it and the

666 last of the waiting threads will do that.

667 This must be either atomically increased/decreased, or

668 always guarded by UNIT_LOCK. */

669 int waiting;

670 /* Flag set by close_unit if the unit as been closed.

671 Must be manipulated under unit's lock. */

672 int closed;

673

674 /* For traversing arrays */

675 array_loop_spec *ls;

676 int rank;

677

678 /* Name of the file at the time OPEN was executed, as a

679 null-terminated C string. */

680 char *filename;

681

682 /* The format hash table. */

683 struct format_hash_entry format_hash_table[FORMAT_HASH_SIZE];

684

685 /* Formatting buffer. */

686 struct fbuf *fbuf;

687

688 /* Function pointer, points to list_read worker functions. */

689 int (*next_char_fn_ptr) (st_parameter_dt *);

690 void (*push_char_fn_ptr) (st_parameter_dt *, int);

691

692 /* Internal unit char string data. */

693 char * internal_unit;

694 gfc_charlen_type internal_unit_len;

695 gfc_array_char *string_unit_desc;

696 int internal_unit_kind;

697

698 /* DTIO Parent/Child procedure, 0 = parent, >0 = child level. */

699 int child_dtio;

700

701 /* Used for ungetc() style functionality. Possible values

702 are an unsigned char, EOF, or EOF - 1 used to mark the

703 field as not valid. */

704 int last_char;

705 bool has_size;

706 GFC_IO_INT size_used;

707 }

708 gfc_unit;

709

710 typedef struct gfc_saved_unit

711 {

712 GFC_INTEGER_4 unit_number;

713 gfc_unit *unit;

714 }

715 gfc_saved_unit;

716

717 /* TEMP_FAILURE_RETRY macro from glibc. */

718

719 #ifndef TEMP_FAILURE_RETRY

720 /* Evaluate EXPRESSION, and repeat as long as it returns -1 with `errno'

721 set to EINTR. */

722

723 # define TEMP_FAILURE_RETRY(expression) \

724 (__extension__ \

725 ({ long int __result; \

726 do __result = (long int) (expression); \

727 while (__result == -1L && errno == EINTR); \

728 __result; }))

729 #endif

730

731

732 /* unit.c */

733

734 /* Maximum file offset, computed at library initialization time. */

735 extern gfc_offset max_offset;

736 internal_proto(max_offset);

737

738 /* Unit tree root. */

739 extern gfc_unit *unit_root;

740 internal_proto(unit_root);

741

742 extern __gthread_mutex_t unit_lock;

743 internal_proto(unit_lock);

744

745 extern int close_unit (gfc_unit *);

746 internal_proto(close_unit);

747

748 extern gfc_unit *set_internal_unit (st_parameter_dt *, gfc_unit *, int);

749 internal_proto(set_internal_unit);

750

751 extern void stash_internal_unit (st_parameter_dt *);

752 internal_proto(stash_internal_unit);

753

754 extern gfc_unit *find_unit (int);

755 internal_proto(find_unit);

756

757 extern gfc_unit *find_or_create_unit (int);

758 internal_proto(find_or_create_unit);

759

760 extern gfc_unit *get_unit (st_parameter_dt *, int);

761 internal_proto(get_unit);

762

763 extern void unlock_unit (gfc_unit *);

764 internal_proto(unlock_unit);

765

766 extern void finish_last_advance_record (gfc_unit *u);

767 internal_proto (finish_last_advance_record);

768

769 extern int unit_truncate (gfc_unit *, gfc_offset, st_parameter_common *);

770 internal_proto (unit_truncate);

771

772 extern int newunit_alloc (void);

773 internal_proto(newunit_alloc);

774

775

776 /* open.c */

777

778 extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);

779 internal_proto(new_unit);

780

781

782 /* transfer.c */

783

784 #define SCRATCH_SIZE 300

785

786 extern const char *type_name (bt);

787 internal_proto(type_name);

788

789 extern void * read_block_form (st_parameter_dt *, int *);

790 internal_proto(read_block_form);

791

792 extern void * read_block_form4 (st_parameter_dt *, int *);

793 internal_proto(read_block_form4);

794

795 extern void *write_block (st_parameter_dt *, int);

796 internal_proto(write_block);

797

798 extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *,

799 int*);

800 internal_proto(next_array_record);

801

802 extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *,

803 gfc_offset *);

804 internal_proto(init_loop_spec);

805

806 extern void next_record (st_parameter_dt *, int);

807 internal_proto(next_record);

808

809 extern void st_wait (st_parameter_wait *);

810 export_proto(st_wait);

811

812 extern void hit_eof (st_parameter_dt *);

813 internal_proto(hit_eof);

814

815 /* read.c */

816

817 extern void set_integer (void *, GFC_INTEGER_LARGEST, int);

818 internal_proto(set_integer);

819

820 extern GFC_UINTEGER_LARGEST si_max (int);

821 internal_proto(si_max);

822

823 extern int convert_real (st_parameter_dt *, void *, const char *, int);

824 internal_proto(convert_real);

825

826 extern int convert_infnan (st_parameter_dt *, void *, const char *, int);

827 internal_proto(convert_infnan);

828

829 extern void read_a (st_parameter_dt *, const fnode *, char *, int);

830 internal_proto(read_a);

831

832 extern void read_a_char4 (st_parameter_dt *, const fnode *, char *, int);

833 internal_proto(read_a);

834

835 extern void read_f (st_parameter_dt *, const fnode *, char *, int);

836 internal_proto(read_f);

837

838 extern void read_l (st_parameter_dt *, const fnode *, char *, int);

839 internal_proto(read_l);

840

841 extern void read_x (st_parameter_dt *, int);

842 internal_proto(read_x);

843

844 extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);

845 internal_proto(read_radix);

846

847 extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);

848 internal_proto(read_decimal);

849

850 extern void read_user_defined (st_parameter_dt *, void *);

851 internal_proto(read_user_defined);

852

853 extern void read_user_defined (st_parameter_dt *, void *);

854 internal_proto(read_user_defined);

855

856 /* list_read.c */

857

858 extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,

859 size_t);

860 internal_proto(list_formatted_read);

861

862 extern void finish_list_read (st_parameter_dt *);

863 internal_proto(finish_list_read);

864

865 extern void namelist_read (st_parameter_dt *);

866 internal_proto(namelist_read);

867

868 extern void namelist_write (st_parameter_dt *);

869 internal_proto(namelist_write);

870

871 /* write.c */

872

873 extern void write_a (st_parameter_dt *, const fnode *, const char *, int);

874 internal_proto(write_a);

875

876 extern void write_a_char4 (st_parameter_dt *, const fnode *, const char *, int);

877 internal_proto(write_a_char4);

878

879 extern void write_b (st_parameter_dt *, const fnode *, const char *, int);

880 internal_proto(write_b);

881

882 extern void write_d (st_parameter_dt *, const fnode *, const char *, int);

883 internal_proto(write_d);

884

885 extern void write_e (st_parameter_dt *, const fnode *, const char *, int);

886 internal_proto(write_e);

887

888 extern void write_en (st_parameter_dt *, const fnode *, const char *, int);

889 internal_proto(write_en);

890

891 extern void write_es (st_parameter_dt *, const fnode *, const char *, int);

892 internal_proto(write_es);

893

894 extern void write_f (st_parameter_dt *, const fnode *, const char *, int);

895 internal_proto(write_f);

896

897 extern void write_i (st_parameter_dt *, const fnode *, const char *, int);

898 internal_proto(write_i);

899

900 extern void write_l (st_parameter_dt *, const fnode *, char *, int);

901 internal_proto(write_l);

902

903 extern void write_o (st_parameter_dt *, const fnode *, const char *, int);

904 internal_proto(write_o);

905

906 extern void write_real (st_parameter_dt *, const char *, int);

907 internal_proto(write_real);

908

909 extern void write_real_g0 (st_parameter_dt *, const char *, int, int);

910 internal_proto(write_real_g0);

911

912 extern void write_x (st_parameter_dt *, int, int);

913 internal_proto(write_x);

914

915 extern void write_z (st_parameter_dt *, const fnode *, const char *, int);

916 internal_proto(write_z);

917

918 extern void write_user_defined (st_parameter_dt *, void *);

919 internal_proto(write_user_defined);

920

921 extern void write_user_defined (st_parameter_dt *, void *);

922 internal_proto(write_user_defined);

923

924 extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,

925 size_t);

926 internal_proto(list_formatted_write);

927

928 /* size_from_kind.c */

929 extern size_t size_from_real_kind (int);

930 internal_proto(size_from_real_kind);

931

932 extern size_t size_from_complex_kind (int);

933 internal_proto(size_from_complex_kind);

934

935

936 /* lock.c */

937 extern void free_ionml (st_parameter_dt *);

938 internal_proto(free_ionml);

939

940 static inline void

941 inc_waiting_locked (gfc_unit *u)

942 {

943 #ifdef HAVE_SYNC_FETCH_AND_ADD

944 (void) __sync_fetch_and_add (&u->waiting, 1);

945 #else

946 u->waiting++;

947 #endif

948 }

949

950 static inline int

951 predec_waiting_locked (gfc_unit *u)

952 {

953 #ifdef HAVE_SYNC_FETCH_AND_ADD

954 return __sync_add_and_fetch (&u->waiting, -1);

955 #else

956 return --u->waiting;

957 #endif

958 }

959

960 static inline void

961 dec_waiting_unlocked (gfc_unit *u)

962 {

963 #ifdef HAVE_SYNC_FETCH_AND_ADD

964 (void) __sync_fetch_and_add (&u->waiting, -1);

965 #else

966 __gthread_mutex_lock (&unit_lock);

967 u->waiting--;

968 __gthread_mutex_unlock (&unit_lock);

969 #endif

970 }

971

972

973 static inline void

974 memset4 (gfc_char4_t *p, gfc_char4_t c, int k)

975 {

976 int j;

977 for (j = 0; j < k; j++)

978 *p++ = c;

979 }

980

981 #endif

982