-/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by Andy Vaught
+ F2003 I/O support contributed by Jerry DeLisle
This file is part of the GNU Fortran 95 runtime library (libgfortran).
You should have received a copy of the GNU General Public License
along with Libgfortran; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
/* IO library include. */
-#include <setjmp.h>
#include "libgfortran.h"
-#define DEFAULT_TEMPDIR "/tmp"
+#include <setjmp.h>
+#include <gthr.h>
/* Basic types used in data transfers. */
}
bt;
-
-typedef enum
-{ SUCCESS = 1, FAILURE }
-try;
+struct st_parameter_dt;
typedef struct stream
{
- char *(*alloc_w_at) (struct stream *, int *, gfc_offset);
- char *(*alloc_r_at) (struct stream *, int *, gfc_offset);
+ char *(*alloc_w_at) (struct stream *, int *);
try (*sfree) (struct stream *);
try (*close) (struct stream *);
try (*seek) (struct stream *, gfc_offset);
- try (*truncate) (struct stream *);
+ try (*trunc) (struct stream *);
+ int (*read) (struct stream *, void *, size_t *);
+ int (*write) (struct stream *, const void *, size_t *);
+ try (*set) (struct stream *, int, size_t);
}
stream;
+typedef enum
+{ SYNC_BUFFERED, SYNC_UNBUFFERED, ASYNC }
+io_mode;
/* Macros for doing file I/O given a stream. */
#define sfree(s) ((s)->sfree)(s)
#define sclose(s) ((s)->close)(s)
-#define salloc_r(s, len) ((s)->alloc_r_at)(s, len, -1)
-#define salloc_w(s, len) ((s)->alloc_w_at)(s, len, -1)
-
-#define salloc_r_at(s, len, where) ((s)->alloc_r_at)(s, len, where)
-#define salloc_w_at(s, len, where) ((s)->alloc_w_at)(s, len, where)
+#define salloc_w(s, len) ((s)->alloc_w_at)(s, len)
#define sseek(s, pos) ((s)->seek)(s, pos)
-#define struncate(s) ((s)->truncate)(s)
+#define struncate(s) ((s)->trunc)(s)
+#define sread(s, buf, nbytes) ((s)->read)(s, buf, nbytes)
+#define swrite(s, buf, nbytes) ((s)->write)(s, buf, nbytes)
-/* Representation of a namelist object in libgfortran
+#define sset(s, c, n) ((s)->set)(s, c, n)
- Namelist Records
- &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../
- or
- &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END
+/* Macros for testing what kinds of I/O we are doing. */
- The object can be a fully qualified, compound name for an instrinsic
- type, derived types or derived type components. So, a substring
- a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
- read. Hence full information about the structure of the object has
- to be available to list_read.c and write.
+#define is_array_io(dtp) ((dtp)->internal_unit_desc)
- These requirements are met by the following data structures.
+#define is_internal_unit(dtp) ((dtp)->u.p.unit_is_internal)
- nml_loop_spec contains the variables for the loops over index ranges
+#define is_stream_io(dtp) ((dtp)->u.p.current_unit->flags.access == ACCESS_STREAM)
+
+/* The array_loop_spec contains the variables for the loops over index ranges
that are encountered. Since the variables can be negative, ssize_t
is used. */
-typedef struct nml_loop_spec
+typedef struct array_loop_spec
{
-
/* Index counter for this dimension. */
ssize_t idx;
/* Step for the index counter. */
ssize_t step;
}
-nml_loop_spec;
+array_loop_spec;
-/* namelist_info type contains all the scalar information about the
- object and arrays of descriptor_dimension and nml_loop_spec types for
+/* Representation of a namelist object in libgfortran
+
+ Namelist Records
+ &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../
+ or
+ &GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END
+
+ The object can be a fully qualified, compound name for an intrinsic
+ type, derived types or derived type components. So, a substring
+ a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
+ read. Hence full information about the structure of the object has
+ to be available to list_read.c and write.
+
+ These requirements are met by the following data structures.
+
+ namelist_info type contains all the scalar information about the
+ object and arrays of descriptor_dimension and array_loop_spec types for
arrays. */
typedef struct namelist_type
index_type string_length;
descriptor_dimension * dim;
- nml_loop_spec * ls;
+ array_loop_spec * ls;
struct namelist_type * next;
}
namelist_info;
/* Options for the OPEN statement. */
typedef enum
-{ ACCESS_SEQUENTIAL, ACCESS_DIRECT,
+{ ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,
ACCESS_UNSPECIFIED
}
unit_access;
unit_pad;
typedef enum
+{ DECIMAL_POINT, DECIMAL_COMMA, DECIMAL_UNSPECIFIED }
+unit_decimal;
+
+typedef enum
+{ ENCODING_UTF8, ENCODING_DEFAULT, ENCODING_UNSPECIFIED }
+unit_encoding;
+
+typedef enum
+{ ROUND_UP, ROUND_DOWN, ROUND_ZERO, ROUND_NEAREST, ROUND_COMPATIBLE,
+ ROUND_PROCDEFINED, ROUND_UNSPECIFIED }
+unit_round;
+
+/* NOTE: unit_sign must correspond with the sign_status enumerator in
+ st_parameter_dt to not break the ABI. */
+typedef enum
+{ SIGN_PROCDEFINED, SIGN_SUPPRESS, SIGN_PLUS, SIGN_UNSPECIFIED }
+unit_sign;
+
+typedef enum
{ ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }
unit_advance;
{READING, WRITING}
unit_mode;
-/* Statement parameters. These are all the things that can appear in
- an I/O statement. Some are inputs and some are outputs, but none
- are both. All of these values are initially zeroed and are zeroed
- at the end of a library statement. The relevant values need to be
- set before entry to an I/O statement. This structure needs to be
- duplicated by the back end. */
+typedef enum
+{ ASYNC_YES, ASYNC_NO, ASYNC_UNSPECIFIED }
+unit_async;
+
+typedef enum
+{ SIGN_S, SIGN_SS, SIGN_SP }
+unit_sign_s;
+
+#define CHARACTER1(name) \
+ char * name; \
+ gfc_charlen_type name ## _len
+#define CHARACTER2(name) \
+ gfc_charlen_type name ## _len; \
+ char * name
typedef struct
{
- GFC_INTEGER_4 unit;
- GFC_INTEGER_4 err, end, eor, list_format; /* These are flags, not values. */
+ st_parameter_common common;
+ GFC_INTEGER_4 recl_in;
+ CHARACTER2 (file);
+ CHARACTER1 (status);
+ CHARACTER2 (access);
+ CHARACTER1 (form);
+ CHARACTER2 (blank);
+ CHARACTER1 (position);
+ CHARACTER2 (action);
+ CHARACTER1 (delim);
+ CHARACTER2 (pad);
+ CHARACTER1 (convert);
+ CHARACTER2 (decimal);
+ CHARACTER1 (encoding);
+ CHARACTER2 (round);
+ CHARACTER1 (sign);
+ CHARACTER2 (asynchronous);
+}
+st_parameter_open;
-/* Return values from library statements. These are returned only if
- the labels are specified in the statement itself and the condition
- occurs. In most cases, none of the labels are specified and the
- return value does not have to be checked. Must be consistent with
- the front end. */
+#define IOPARM_CLOSE_HAS_STATUS (1 << 7)
- enum
- {
- LIBRARY_OK = 0,
- LIBRARY_ERROR,
- LIBRARY_END,
- LIBRARY_EOR
- }
- library_return;
+typedef struct
+{
+ st_parameter_common common;
+ CHARACTER1 (status);
+}
+st_parameter_close;
- GFC_INTEGER_4 *iostat, *exist, *opened, *number, *named;
- GFC_INTEGER_4 rec;
- GFC_INTEGER_4 *nextrec, *size;
+typedef struct
+{
+ st_parameter_common common;
+}
+st_parameter_filepos;
+
+#define IOPARM_INQUIRE_HAS_EXIST (1 << 7)
+#define IOPARM_INQUIRE_HAS_OPENED (1 << 8)
+#define IOPARM_INQUIRE_HAS_NUMBER (1 << 9)
+#define IOPARM_INQUIRE_HAS_NAMED (1 << 10)
+#define IOPARM_INQUIRE_HAS_NEXTREC (1 << 11)
+#define IOPARM_INQUIRE_HAS_RECL_OUT (1 << 12)
+#define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)
+#define IOPARM_INQUIRE_HAS_FILE (1 << 14)
+#define IOPARM_INQUIRE_HAS_ACCESS (1 << 15)
+#define IOPARM_INQUIRE_HAS_FORM (1 << 16)
+#define IOPARM_INQUIRE_HAS_BLANK (1 << 17)
+#define IOPARM_INQUIRE_HAS_POSITION (1 << 18)
+#define IOPARM_INQUIRE_HAS_ACTION (1 << 19)
+#define IOPARM_INQUIRE_HAS_DELIM (1 << 20)
+#define IOPARM_INQUIRE_HAS_PAD (1 << 21)
+#define IOPARM_INQUIRE_HAS_NAME (1 << 22)
+#define IOPARM_INQUIRE_HAS_SEQUENTIAL (1 << 23)
+#define IOPARM_INQUIRE_HAS_DIRECT (1 << 24)
+#define IOPARM_INQUIRE_HAS_FORMATTED (1 << 25)
+#define IOPARM_INQUIRE_HAS_UNFORMATTED (1 << 26)
+#define IOPARM_INQUIRE_HAS_READ (1 << 27)
+#define IOPARM_INQUIRE_HAS_WRITE (1 << 28)
+#define IOPARM_INQUIRE_HAS_READWRITE (1 << 29)
+#define IOPARM_INQUIRE_HAS_CONVERT (1 << 30)
+#define IOPARM_INQUIRE_HAS_FLAGS2 (1 << 31)
+
+#define IOPARM_INQUIRE_HAS_ASYNCHRONOUS (1 << 0)
+#define IOPARM_INQUIRE_HAS_DECIMAL (1 << 1)
+#define IOPARM_INQUIRE_HAS_ENCODING (1 << 2)
+#define IOPARM_INQUIRE_HAS_PENDING (1 << 3)
+#define IOPARM_INQUIRE_HAS_ROUND (1 << 4)
+#define IOPARM_INQUIRE_HAS_SIGN (1 << 5)
+#define IOPARM_INQUIRE_HAS_SIZE (1 << 6)
+#define IOPARM_INQUIRE_HAS_ID (1 << 7)
- GFC_INTEGER_4 recl_in;
- GFC_INTEGER_4 *recl_out;
-
- GFC_INTEGER_4 *iolength;
-
-#define CHARACTER(name) \
- char * name; \
- gfc_charlen_type name ## _len
- CHARACTER (file);
- CHARACTER (status);
- CHARACTER (access);
- CHARACTER (form);
- CHARACTER (blank);
- CHARACTER (position);
- CHARACTER (action);
- CHARACTER (delim);
- CHARACTER (pad);
- CHARACTER (format);
- CHARACTER (advance);
- CHARACTER (name);
- CHARACTER (internal_unit);
- CHARACTER (sequential);
- CHARACTER (direct);
- CHARACTER (formatted);
- CHARACTER (unformatted);
- CHARACTER (read);
- CHARACTER (write);
- CHARACTER (readwrite);
-
-/* namelist related data */
- CHARACTER (namelist_name);
- GFC_INTEGER_4 namelist_read_mode;
-
-#undef CHARACTER
+typedef struct
+{
+ st_parameter_common common;
+ GFC_INTEGER_4 *exist, *opened, *number, *named;
+ GFC_INTEGER_4 *nextrec, *recl_out;
+ GFC_IO_INT *strm_pos_out;
+ CHARACTER1 (file);
+ CHARACTER2 (access);
+ CHARACTER1 (form);
+ CHARACTER2 (blank);
+ CHARACTER1 (position);
+ CHARACTER2 (action);
+ CHARACTER1 (delim);
+ CHARACTER2 (pad);
+ CHARACTER1 (name);
+ CHARACTER2 (sequential);
+ CHARACTER1 (direct);
+ CHARACTER2 (formatted);
+ CHARACTER1 (unformatted);
+ CHARACTER2 (read);
+ CHARACTER1 (write);
+ CHARACTER2 (readwrite);
+ CHARACTER1 (convert);
+ GFC_INTEGER_4 flags2;
+ CHARACTER1 (asynchronous);
+ CHARACTER2 (decimal);
+ CHARACTER1 (encoding);
+ CHARACTER2 (pending);
+ CHARACTER1 (round);
+ CHARACTER2 (sign);
+ GFC_INTEGER_4 *size;
+ GFC_INTEGER_4 *id;
+}
+st_parameter_inquire;
+
+struct gfc_unit;
+struct format_data;
+
+#define IOPARM_DT_LIST_FORMAT (1 << 7)
+#define IOPARM_DT_NAMELIST_READ_MODE (1 << 8)
+#define IOPARM_DT_HAS_REC (1 << 9)
+#define IOPARM_DT_HAS_SIZE (1 << 10)
+#define IOPARM_DT_HAS_IOLENGTH (1 << 11)
+#define IOPARM_DT_HAS_FORMAT (1 << 12)
+#define IOPARM_DT_HAS_ADVANCE (1 << 13)
+#define IOPARM_DT_HAS_INTERNAL_UNIT (1 << 14)
+#define IOPARM_DT_HAS_NAMELIST_NAME (1 << 15)
+#define IOPARM_DT_HAS_ID (1 << 16)
+#define IOPARM_DT_HAS_POS (1 << 17)
+#define IOPARM_DT_HAS_ASYNCHRONOUS (1 << 18)
+#define IOPARM_DT_HAS_BLANK (1 << 19)
+#define IOPARM_DT_HAS_DECIMAL (1 << 20)
+#define IOPARM_DT_HAS_DELIM (1 << 21)
+#define IOPARM_DT_HAS_PAD (1 << 22)
+#define IOPARM_DT_HAS_ROUND (1 << 23)
+#define IOPARM_DT_HAS_SIGN (1 << 24)
+#define IOPARM_DT_HAS_F2003 (1 << 25)
+/* Internal use bit. */
+#define IOPARM_DT_IONML_SET (1 << 31)
+
+
+typedef struct st_parameter_43
+{
+ void (*transfer) (struct st_parameter_dt *, bt, void *, int,
+ size_t, size_t);
+ struct gfc_unit *current_unit;
+ /* Item number in a formatted data transfer. Also used in namelist
+ read_logical as an index into line_buffer. */
+ int item_count;
+ unit_mode mode;
+ unit_blank blank_status;
+ unit_sign sign_status;
+ int scale_factor;
+ int max_pos; /* Maximum righthand column written to. */
+ /* Number of skips + spaces to be done for T and X-editing. */
+ int skips;
+ /* Number of spaces to be done for T and X-editing. */
+ int pending_spaces;
+ /* Whether an EOR condition was encountered. Value is:
+ 0 if no EOR was encountered
+ 1 if an EOR was encountered due to a 1-byte marker (LF)
+ 2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
+ int sf_seen_eor;
+ unit_advance advance_status;
+ unsigned reversion_flag : 1; /* Format reversion has occurred. */
+ unsigned first_item : 1;
+ unsigned seen_dollar : 1;
+ unsigned eor_condition : 1;
+ unsigned no_leading_blank : 1;
+ unsigned char_flag : 1;
+ unsigned input_complete : 1;
+ unsigned at_eol : 1;
+ unsigned comma_flag : 1;
+ /* A namelist specific flag used in the list directed library
+ to flag that calls are being made from namelist read (eg. to
+ ignore comments or to treat '/' as a terminator) */
+ unsigned namelist_mode : 1;
+ /* A namelist specific flag used in the list directed library
+ to flag read errors and return, so that an attempt can be
+ made to read a new object name. */
+ unsigned nml_read_error : 1;
+ /* A sequential formatted read specific flag used to signal that a
+ character string is being read so don't use commas to shorten a
+ formatted field width. */
+ unsigned sf_read_comma : 1;
+ /* A namelist specific flag used to enable reading input from
+ line_buffer for logical reads. */
+ unsigned line_buffer_enabled : 1;
+ /* An internal unit specific flag used to identify that the associated
+ unit is internal. */
+ unsigned unit_is_internal : 1;
+ /* An internal unit specific flag to signify an EOF condition for list
+ directed read. */
+ unsigned at_eof : 1;
+ /* 16 unused bits. */
+
+ char last_char;
+ char nml_delim;
+
+ int repeat_count;
+ int saved_length;
+ int saved_used;
+ bt saved_type;
+ char *saved_string;
+ char *scratch;
+ char *line_buffer;
+ struct format_data *fmt;
+ jmp_buf *eof_jump;
+ namelist_info *ionml;
+ /* A flag used to identify when a non-standard expanded namelist read
+ has occurred. */
+ int expanded_read;
+ /* Storage area for values except for strings. Must be large
+ enough to hold a complex value (two reals) of the largest
+ kind. */
+ char value[32];
+ gfc_offset size_used;
+} st_parameter_43;
+
+
+typedef struct st_parameter_44
+{
+ GFC_IO_INT *id;
+ GFC_IO_INT pos;
+ CHARACTER1 (asynchronous);
+ CHARACTER2 (blank);
+ CHARACTER1 (decimal);
+ CHARACTER2 (delim);
+ CHARACTER1 (pad);
+ CHARACTER2 (round);
+ CHARACTER1 (sign);
+ void (*transfer) (struct st_parameter_dt *, bt, void *, int,
+ size_t, size_t);
+ struct gfc_unit *current_unit;
+ /* Item number in a formatted data transfer. Also used in namelist
+ read_logical as an index into line_buffer. */
+ int item_count;
+ unit_mode mode;
+ unit_blank blank_status;
+ unit_sign sign_status;
+ int scale_factor;
+ int max_pos; /* Maximum righthand column written to. */
+ /* Number of skips + spaces to be done for T and X-editing. */
+ int skips;
+ /* Number of spaces to be done for T and X-editing. */
+ int pending_spaces;
+ /* Whether an EOR condition was encountered. Value is:
+ 0 if no EOR was encountered
+ 1 if an EOR was encountered due to a 1-byte marker (LF)
+ 2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
+ int sf_seen_eor;
+ unit_advance advance_status;
+ unsigned reversion_flag : 1; /* Format reversion has occurred. */
+ unsigned first_item : 1;
+ unsigned seen_dollar : 1;
+ unsigned eor_condition : 1;
+ unsigned no_leading_blank : 1;
+ unsigned char_flag : 1;
+ unsigned input_complete : 1;
+ unsigned at_eol : 1;
+ unsigned comma_flag : 1;
+ /* A namelist specific flag used in the list directed library
+ to flag that calls are being made from namelist read (eg. to
+ ignore comments or to treat '/' as a terminator) */
+ unsigned namelist_mode : 1;
+ /* A namelist specific flag used in the list directed library
+ to flag read errors and return, so that an attempt can be
+ made to read a new object name. */
+ unsigned nml_read_error : 1;
+ /* A sequential formatted read specific flag used to signal that a
+ character string is being read so don't use commas to shorten a
+ formatted field width. */
+ unsigned sf_read_comma : 1;
+ /* A namelist specific flag used to enable reading input from
+ line_buffer for logical reads. */
+ unsigned line_buffer_enabled : 1;
+ /* An internal unit specific flag used to identify that the associated
+ unit is internal. */
+ unsigned unit_is_internal : 1;
+ /* An internal unit specific flag to signify an EOF condition for list
+ directed read. */
+ unsigned at_eof : 1;
+ /* 16 unused bits. */
+
+ char last_char;
+ char nml_delim;
+
+ int repeat_count;
+ int saved_length;
+ int saved_used;
+ bt saved_type;
+ char *saved_string;
+ char *scratch;
+ char *line_buffer;
+ struct format_data *fmt;
+ jmp_buf *eof_jump;
+ namelist_info *ionml;
+ /* A flag used to identify when a non-standard expanded namelist read
+ has occurred. */
+ int expanded_read;
+ /* Storage area for values except for strings. Must be large
+ enough to hold a complex value (two reals) of the largest
+ kind. */
+ char value[32];
+ gfc_offset size_used;
+ unit_pad pad_status;
+ unit_decimal decimal_status;
+ unit_delim delim_status;
+} st_parameter_44;
+
+typedef struct st_parameter_dt
+{
+ st_parameter_common common;
+ GFC_IO_INT rec;
+ GFC_IO_INT *size, *iolength;
+ gfc_array_char *internal_unit_desc;
+ CHARACTER1 (format);
+ CHARACTER2 (advance);
+ CHARACTER1 (internal_unit);
+ CHARACTER2 (namelist_name);
+ /* Private part of the structure. The compiler just needs
+ to reserve enough space. */
+ union
+ {
+ st_parameter_43 q;
+ st_parameter_44 p;
+ /* This pad size must be equal to the pad_size declared in
+ trans-io.c (gfc_build_io_library_fndecls). The above structure
+ must be smaller or equal to this array. */
+ char pad[32 * sizeof (char *) + 32 * sizeof (int)];
+ } u;
+}
+st_parameter_dt;
+
+/* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */
+extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
+ >= sizeof (((st_parameter_dt *) 0)->u.p)
+ ? 1 : -1];
+
+#define IOPARM_WAIT_HAS_ID (1 << 7)
+
+typedef struct
+{
+ st_parameter_common common;
+ CHARACTER1 (id);
}
-st_parameter;
+st_parameter_wait;
-extern st_parameter ioparm;
-iexport_data_proto(ioparm);
-extern namelist_info * ionml;
-internal_proto(ionml);
+#undef CHARACTER1
+#undef CHARACTER2
typedef struct
{
unit_position position;
unit_status status;
unit_pad pad;
+ unit_convert convert;
+ int has_recl;
+ unit_decimal decimal;
+ unit_encoding encoding;
+ unit_round round;
+ unit_sign sign;
+ unit_async async;
}
unit_flags;
-/* The default value of record length for preconnected units is defined
- here. This value can be overriden by an environment variable.
- Default value is 1 Gb. */
+/* Formatting buffer. This is a temporary scratch buffer. Currently used only
+ by formatted writes. After every
+ formatted write statement, this buffer is flushed. This buffer is needed since
+ not all devices are seekable, and T or TL edit descriptors require
+ moving backwards in the record. However, advance='no' complicates the
+ situation, so the buffer must only be partially flushed from the end of the
+ last flush until the current position in the record. */
-#define DEFAULT_RECL 1073741824
+typedef struct fbuf
+{
+ char *buf; /* Start of buffer. */
+ size_t len; /* Length of buffer. */
+ size_t act; /* Active bytes in buffer. */
+ size_t flushed; /* Flushed bytes from beginning of buffer. */
+ size_t pos; /* Current position in buffer. */
+}
+fbuf;
typedef struct gfc_unit
{
int unit_number;
-
stream *s;
-
- struct gfc_unit *left, *right; /* Treap links. */
+
+ /* Treap links. */
+ struct gfc_unit *left, *right;
int priority;
- int read_bad, current_record;
+ int read_bad, current_record, saved_pos, previous_nonadvancing_write;
+
enum
{ NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
endfile;
- unit_mode mode;
+ unit_mode mode;
unit_flags flags;
- gfc_offset recl, last_record, maxrec, bytes_left;
- /* recl -- Record length of the file.
- last_record -- Last record number read or written
- maxrec -- Maximum record number in a direct access file
- bytes_left -- Bytes left in current record. */
+ /* recl -- Record length of the file.
+ last_record -- Last record number read or written
+ maxrec -- Maximum record number in a direct access file
+ bytes_left -- Bytes left in current record.
+ strm_pos -- Current position in file for STREAM I/O.
+ recl_subrecord -- Maximum length for subrecord.
+ bytes_left_subrecord -- Bytes left in current subrecord. */
+ gfc_offset recl, last_record, maxrec, bytes_left, strm_pos,
+ recl_subrecord, bytes_left_subrecord;
+
+ /* Set to 1 if we have read a subrecord. */
+
+ int continued;
+
+ __gthread_mutex_t lock;
+ /* Number of threads waiting to acquire this unit's lock.
+ When non-zero, close_unit doesn't only removes the unit
+ from the UNIT_ROOT tree, but doesn't free it and the
+ last of the waiting threads will do that.
+ This must be either atomically increased/decreased, or
+ always guarded by UNIT_LOCK. */
+ int waiting;
+ /* Flag set by close_unit if the unit as been closed.
+ Must be manipulated under unit's lock. */
+ int closed;
+
+ /* For traversing arrays */
+ array_loop_spec *ls;
+ int rank;
int file_len;
- char file[1]; /* Filename is allocated at the end of the structure. */
+ char *file;
+
+ /* Formatting buffer. */
+ struct fbuf *fbuf;
}
gfc_unit;
-/* Global variables. Putting these in a structure makes it easier to
- maintain, particularly with the constraint of a prefix. */
-
-typedef struct
-{
- int in_library; /* Nonzero if a library call is being processed. */
- int size; /* Bytes processed by the current data-transfer statement. */
- gfc_offset max_offset; /* Maximum file offset. */
- int item_count; /* Item number in a formatted data transfer. */
- int reversion_flag; /* Format reversion has occurred. */
- int first_item;
-
- gfc_unit *unit_root;
- int seen_dollar;
-
- unit_mode mode;
-
- unit_blank blank_status;
- enum {SIGN_S, SIGN_SS, SIGN_SP} sign_status;
- int scale_factor;
- jmp_buf eof_jump;
-}
-global_t;
-
-extern global_t g;
-internal_proto(g);
-
-extern gfc_unit *current_unit;
-internal_proto(current_unit);
-
/* Format tokens. Only about half of these can be stored in the
format nodes. */
FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
- FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
+ FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END, FMT_DC,
+ FMT_DP
}
format_token;
extern int compare_files (stream *, stream *);
internal_proto(compare_files);
-extern stream *init_error_stream (void);
-internal_proto(init_error_stream);
-
-extern stream *open_external (unit_flags *);
+extern stream *open_external (st_parameter_open *, unit_flags *);
internal_proto(open_external);
-extern stream *open_internal (char *, int);
+extern stream *open_internal (char *, int, gfc_offset);
internal_proto(open_internal);
extern stream *input_stream (void);
extern stream *error_stream (void);
internal_proto(error_stream);
-extern int compare_file_filename (stream *, const char *, int);
+extern int compare_file_filename (gfc_unit *, const char *, int);
internal_proto(compare_file_filename);
-extern gfc_unit *find_file (void);
+extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
internal_proto(find_file);
extern int stream_at_bof (stream *);
extern int delete_file (gfc_unit *);
internal_proto(delete_file);
-extern int file_exists (void);
+extern int file_exists (const char *file, gfc_charlen_type file_len);
internal_proto(file_exists);
extern const char *inquire_sequential (const char *, int);
extern int is_seekable (stream *);
internal_proto(is_seekable);
+extern int is_special (stream *);
+internal_proto(is_special);
+
+extern int is_preconnected (stream *);
+internal_proto(is_preconnected);
+
+extern void flush_if_preconnected (stream *);
+internal_proto(flush_if_preconnected);
+
extern void empty_internal_buffer(stream *);
internal_proto(empty_internal_buffer);
extern char * stream_ttyname (stream *);
internal_proto(stream_ttyname);
-extern int unit_to_fd (int);
-internal_proto(unit_to_fd);
+extern gfc_offset stream_offset (stream *s);
+internal_proto(stream_offset);
+
+extern int unpack_filename (char *, const char *, int);
+internal_proto(unpack_filename);
/* unit.c */
-extern void insert_unit (gfc_unit *);
-internal_proto(insert_unit);
+/* Maximum file offset, computed at library initialization time. */
+extern gfc_offset max_offset;
+internal_proto(max_offset);
+
+/* Unit tree root. */
+extern gfc_unit *unit_root;
+internal_proto(unit_root);
+
+extern __gthread_mutex_t unit_lock;
+internal_proto(unit_lock);
extern int close_unit (gfc_unit *);
internal_proto(close_unit);
-extern int is_internal_unit (void);
-internal_proto(is_internal_unit);
+extern gfc_unit *get_internal_unit (st_parameter_dt *);
+internal_proto(get_internal_unit);
+
+extern void free_internal_unit (st_parameter_dt *);
+internal_proto(free_internal_unit);
extern gfc_unit *find_unit (int);
internal_proto(find_unit);
-extern gfc_unit *get_unit (int);
+extern gfc_unit *find_or_create_unit (int);
+internal_proto(find_or_create_unit);
+
+extern gfc_unit *get_unit (st_parameter_dt *, int);
internal_proto(get_unit);
-/* open.c */
+extern void unlock_unit (gfc_unit *);
+internal_proto(unlock_unit);
+
+extern void update_position (gfc_unit *);
+internal_proto(update_position);
-extern void test_endfile (gfc_unit *);
-internal_proto(test_endfile);
+extern void finish_last_advance_record (gfc_unit *u);
+internal_proto (finish_last_advance_record);
+
+/* open.c */
-extern void new_unit (unit_flags *);
+extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
internal_proto(new_unit);
/* format.c */
-extern void parse_format (void);
+extern void parse_format (st_parameter_dt *);
internal_proto(parse_format);
-extern fnode *next_format (void);
+extern const fnode *next_format (st_parameter_dt *);
internal_proto(next_format);
-extern void unget_format (fnode *);
+extern void unget_format (st_parameter_dt *, const fnode *);
internal_proto(unget_format);
-extern void format_error (fnode *, const char *);
+extern void format_error (st_parameter_dt *, const fnode *, const char *);
internal_proto(format_error);
-extern void free_fnodes (void);
-internal_proto(free_fnodes);
+extern void free_format_data (st_parameter_dt *);
+internal_proto(free_format_data);
/* transfer.c */
#define SCRATCH_SIZE 300
-extern char scratch[];
-internal_proto(scratch);
-
extern const char *type_name (bt);
internal_proto(type_name);
-extern void *read_block (int *);
-internal_proto(read_block);
+extern try read_block_form (st_parameter_dt *, void *, size_t *);
+internal_proto(read_block_form);
+
+extern char *read_sf (st_parameter_dt *, int *, int);
+internal_proto(read_sf);
-extern void *write_block (int);
+extern void *write_block (st_parameter_dt *, int);
internal_proto(write_block);
-extern void next_record (int);
+extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *,
+ int*);
+internal_proto(next_array_record);
+
+extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *,
+ gfc_offset *);
+internal_proto(init_loop_spec);
+
+extern void next_record (st_parameter_dt *, int);
internal_proto(next_record);
+extern void reverse_memcpy (void *, const void *, size_t);
+internal_proto (reverse_memcpy);
+
+extern void st_wait (st_parameter_wait *);
+export_proto(st_wait);
+
/* read.c */
extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
extern GFC_UINTEGER_LARGEST max_value (int, int);
internal_proto(max_value);
-extern int convert_real (void *, const char *, int);
+extern int convert_real (st_parameter_dt *, void *, const char *, int);
internal_proto(convert_real);
-extern void read_a (fnode *, char *, int);
+extern void read_a (st_parameter_dt *, const fnode *, char *, int);
+internal_proto(read_a);
+
+extern void read_a_char4 (st_parameter_dt *, const fnode *, char *, int);
internal_proto(read_a);
-extern void read_f (fnode *, char *, int);
+extern void read_f (st_parameter_dt *, const fnode *, char *, int);
internal_proto(read_f);
-extern void read_l (fnode *, char *, int);
+extern void read_l (st_parameter_dt *, const fnode *, char *, int);
internal_proto(read_l);
-extern void read_x (fnode *);
+extern void read_x (st_parameter_dt *, int);
internal_proto(read_x);
-extern void read_radix (fnode *, char *, int, int);
+extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
internal_proto(read_radix);
-extern void read_decimal (fnode *, char *, int);
+extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
internal_proto(read_decimal);
/* list_read.c */
-extern void list_formatted_read (bt, void *, int);
+extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
+ size_t);
internal_proto(list_formatted_read);
-extern void finish_list_read (void);
+extern void finish_list_read (st_parameter_dt *);
internal_proto(finish_list_read);
-extern void init_at_eol (void);
-internal_proto(init_at_eol);
-
-extern void namelist_read (void);
+extern void namelist_read (st_parameter_dt *);
internal_proto(namelist_read);
-extern void namelist_write (void);
+extern void namelist_write (st_parameter_dt *);
internal_proto(namelist_write);
/* write.c */
-extern void write_a (fnode *, const char *, int);
+extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_a);
-extern void write_b (fnode *, const char *, int);
+extern void write_a_char4 (st_parameter_dt *, const fnode *, const char *, int);
+internal_proto(write_a_char4);
+
+extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_b);
-extern void write_d (fnode *, const char *, int);
+extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_d);
-extern void write_e (fnode *, const char *, int);
+extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_e);
-extern void write_en (fnode *, const char *, int);
+extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_en);
-extern void write_es (fnode *, const char *, int);
+extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_es);
-extern void write_f (fnode *, const char *, int);
+extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_f);
-extern void write_i (fnode *, const char *, int);
+extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_i);
-extern void write_l (fnode *, char *, int);
+extern void write_l (st_parameter_dt *, const fnode *, char *, int);
internal_proto(write_l);
-extern void write_o (fnode *, const char *, int);
+extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_o);
-extern void write_x (int, int);
+extern void write_real (st_parameter_dt *, const char *, int);
+internal_proto(write_real);
+
+extern void write_real_g0 (st_parameter_dt *, const char *, int, int);
+internal_proto(write_real_g0);
+
+extern void write_x (st_parameter_dt *, int, int);
internal_proto(write_x);
-extern void write_z (fnode *, const char *, int);
+extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
internal_proto(write_z);
-extern void list_formatted_write (bt, void *, int);
+extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
+ size_t);
internal_proto(list_formatted_write);
+/* size_from_kind.c */
+extern size_t size_from_real_kind (int);
+internal_proto(size_from_real_kind);
+
+extern size_t size_from_complex_kind (int);
+internal_proto(size_from_complex_kind);
+
+/* fbuf.c */
+extern void fbuf_init (gfc_unit *, size_t);
+internal_proto(fbuf_init);
+
+extern void fbuf_destroy (gfc_unit *);
+internal_proto(fbuf_destroy);
+
+extern void fbuf_reset (gfc_unit *);
+internal_proto(fbuf_reset);
+
+extern char * fbuf_alloc (gfc_unit *, size_t);
+internal_proto(fbuf_alloc);
+
+extern int fbuf_flush (gfc_unit *, int);
+internal_proto(fbuf_flush);
+
+extern int fbuf_seek (gfc_unit *, gfc_offset);
+internal_proto(fbuf_seek);
+
+/* lock.c */
+extern void free_ionml (st_parameter_dt *);
+internal_proto(free_ionml);
+
+static inline void
+inc_waiting_locked (gfc_unit *u)
+{
+#ifdef HAVE_SYNC_FETCH_AND_ADD
+ (void) __sync_fetch_and_add (&u->waiting, 1);
+#else
+ u->waiting++;
+#endif
+}
+
+static inline int
+predec_waiting_locked (gfc_unit *u)
+{
+#ifdef HAVE_SYNC_FETCH_AND_ADD
+ return __sync_add_and_fetch (&u->waiting, -1);
+#else
+ return --u->waiting;
#endif
+}
+
+static inline void
+dec_waiting_unlocked (gfc_unit *u)
+{
+#ifdef HAVE_SYNC_FETCH_AND_ADD
+ (void) __sync_fetch_and_add (&u->waiting, -1);
+#else
+ __gthread_mutex_lock (&unit_lock);
+ u->waiting--;
+ __gthread_mutex_unlock (&unit_lock);
+#endif
+}
+
+#endif
+
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