Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
-/* AIX requires this to be the first thing in the file. */
#include <config.h>
-#if __GNUC__
-#define alloca __builtin_alloca
-#else
-#if HAVE_ALLOCA_H
-#include <alloca.h>
-#else
-#ifdef _AIX
-#pragma alloca
-#else
-#ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca ();
-#endif
-#endif
-#endif
-#endif
-
+#include "vfm.h"
+#include "vfmP.h"
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h> /* Required by SunOS4. */
#endif
#include "alloc.h"
-#include "approx.h"
#include "do-ifP.h"
#include "error.h"
#include "expr.h"
#include "misc.h"
#include "random.h"
+#include "settings.h"
#include "som.h"
#include "str.h"
#include "tab.h"
#include "var.h"
-#include "vector.h"
-#include "vfm.h"
-#include "vfmP.h"
+#include "value-labels.h"
/*
Virtual File Manager (vfm):
- vfm is used to process data files. It uses the model that data is
- read from one stream (the data source), then written to another
- (the data sink). The data source is then deleted and the data sink
- becomes the data source for the next procedure. */
+ vfm is used to process data files. It uses the model that
+ data is read from one stream (the data source), processed,
+ then written to another (the data sink). The data source is
+ then deleted and the data sink becomes the data source for the
+ next procedure. */
-#undef DEBUGGING
-/*#define DEBUGGING 1 */
#include "debug-print.h"
-/* This is used to read from the active file. */
-struct case_stream *vfm_source;
+/* Procedure execution data. */
+struct write_case_data
+ {
+ void (*beginfunc) (void *);
+ int (*procfunc) (struct ccase *, void *);
+ void (*endfunc) (void *);
+ void *aux;
+ };
-/* `value' indexes to initialize to particular values for certain cases. */
-struct long_vec reinit_sysmis; /* SYSMIS for every case. */
-struct long_vec reinit_blanks; /* Blanks for every case. */
-struct long_vec init_zero; /* Zero for first case only. */
-struct long_vec init_blanks; /* Blanks for first case only. */
+/* The current active file, from which cases are read. */
+struct case_source *vfm_source;
-/* This is used to write to the replacement active file. */
-struct case_stream *vfm_sink;
+/* The replacement active file, to which cases are written. */
+struct case_sink *vfm_sink;
/* Information about the data source. */
struct stream_info vfm_source_info;
/* Information about the data sink. */
struct stream_info vfm_sink_info;
-/* Filter variable and `value' index. */
-static struct variable *filter_var;
-static int filter_index;
-
-#define FILTERED \
- (filter_index != -1 \
- && (temp_case->data[filter_index].f == 0.0 \
- || temp_case->data[filter_index].f == SYSMIS \
- || is_num_user_missing (temp_case->data[filter_index].f, \
- filter_var)))
-
/* Nonzero if the case needs to have values deleted before being
stored, zero otherwise. */
int compaction_necessary;
`value's. */
struct ccase *compaction_case;
-/* Within a session, when paging is turned on, it is never turned back
- off. This policy might be too aggressive. */
-static int paging = 0;
+/* Nonzero means that we've overflowed our allotted workspace.
+ After that happens once during a session, we always store the
+ active file on disk instead of in memory. (This policy may be
+ too aggressive.) */
+static int workspace_overflow = 0;
/* Time at which vfm was last invoked. */
time_t last_vfm_invocation;
-/* Functions called during procedure processing. */
-static int (*proc_func) (struct ccase *); /* Called for each case. */
-static int (*virt_proc_func) (struct ccase *); /* From SPLIT_FILE_procfunc. */
-static void (*begin_func) (void); /* Called at beginning of a series. */
-static void (*virt_begin_func) (void); /* Called by SPLIT_FILE_procfunc. */
-static void (*end_func) (void); /* Called after end of a series. */
-int (*write_case) (void);
-
/* Number of cases passed to proc_func(). */
static int case_count;
static struct ccase **lag_queue; /* Array of n_lag ccase * elements. */
static void open_active_file (void);
-static void close_active_file (void);
-static int SPLIT_FILE_procfunc (struct ccase *);
+static void close_active_file (struct write_case_data *);
+static int SPLIT_FILE_procfunc (struct ccase *, void *);
static void finish_compaction (void);
static void lag_case (void);
-static int procedure_write_case (void);
+static int procedure_write_case (struct write_case_data *);
+static void clear_temp_case (void);
+static int exclude_this_case (void);
\f
/* Public functions. */
-/* Reads all the cases from the active file, transforms them by the
- active set of transformations, calls PROCFUNC with CURCASE set to
- the case and CASENUM set to the case number, and writes them to a
- new active file.
+/* Reads all the cases from the active file, transforms them by
+ the active set of transformations, calls PROCFUNC with CURCASE
+ set to the case, and writes them to a new active file.
Divides the active file into zero or more series of one or more
cases each. BEGINFUNC is called before each series. ENDFUNC is
- called after each series. */
+ called after each series.
+
+ Arbitrary user-specified data AUX is passed to BEGINFUNC,
+ PROCFUNC, and ENDFUNC as auxiliary data. */
void
-procedure (void (*beginfunc) (void),
- int (*procfunc) (struct ccase *curcase),
- void (*endfunc) (void))
+procedure (void (*beginfunc) (void *),
+ int (*procfunc) (struct ccase *curcase, void *),
+ void (*endfunc) (void *),
+ void *aux)
{
- end_func = endfunc;
- write_case = procedure_write_case;
+ static int recursive_call;
- if (default_dict.n_splits && procfunc != NULL)
+ struct write_case_data procedure_write_data;
+ struct write_case_data split_file_data;
+
+ assert (++recursive_call == 1);
+
+ if (dict_get_split_cnt (default_dict) == 0)
{
- virt_proc_func = procfunc;
- proc_func = SPLIT_FILE_procfunc;
-
- virt_begin_func = beginfunc;
- begin_func = NULL;
- } else {
- begin_func = beginfunc;
- proc_func = procfunc;
+ /* Normally we just use the data passed by the user. */
+ procedure_write_data.beginfunc = beginfunc;
+ procedure_write_data.procfunc = procfunc;
+ procedure_write_data.endfunc = endfunc;
+ procedure_write_data.aux = aux;
+ }
+ else
+ {
+ /* Under SPLIT FILE, we add a layer of indirection. */
+ procedure_write_data.beginfunc = NULL;
+ procedure_write_data.procfunc = SPLIT_FILE_procfunc;
+ procedure_write_data.endfunc = endfunc;
+ procedure_write_data.aux = &split_file_data;
+
+ split_file_data.beginfunc = beginfunc;
+ split_file_data.procfunc = procfunc;
+ split_file_data.endfunc = endfunc;
+ split_file_data.aux = aux;
}
last_vfm_invocation = time (NULL);
open_active_file ();
- vfm_source->read ();
- close_active_file ();
+ if (vfm_source != NULL)
+ vfm_source->class->read (vfm_source,
+ procedure_write_case, &procedure_write_data);
+ close_active_file (&procedure_write_data);
+
+ assert (--recursive_call == 0);
}
\f
/* Active file processing support. Subtly different semantics from
procedure(). */
-static int process_active_file_write_case (void);
+static int process_active_file_write_case (struct write_case_data *data);
/* The casefunc might want us to stop calling it. */
static int not_canceled;
process_active_file() ignores TEMPORARY, SPLIT FILE, and N. */
void
-process_active_file (void (*beginfunc) (void),
- int (*casefunc) (struct ccase *curcase),
- void (*endfunc) (void))
+process_active_file (void (*beginfunc) (void *),
+ int (*casefunc) (struct ccase *curcase, void *),
+ void (*endfunc) (void *),
+ void *aux)
{
- proc_func = casefunc;
- write_case = process_active_file_write_case;
+ struct write_case_data process_active_write_data;
+
+ process_active_write_data.beginfunc = beginfunc;
+ process_active_write_data.procfunc = casefunc;
+ process_active_write_data.endfunc = endfunc;
+ process_active_write_data.aux = aux;
+
not_canceled = 1;
open_active_file ();
- beginfunc ();
+ beginfunc (aux);
/* There doesn't necessarily need to be an active file. */
- if (vfm_source)
- vfm_source->read ();
+ if (vfm_source != NULL)
+ vfm_source->class->read (vfm_source, process_active_file_write_case,
+ &process_active_write_data);
- endfunc ();
- close_active_file ();
+ endfunc (aux);
+ close_active_file (&process_active_write_data);
}
/* Pass the current case to casefunc. */
static int
-process_active_file_write_case (void)
+process_active_file_write_case (struct write_case_data *data)
{
/* Index of current transformation. */
int cur_trns;
lag_case ();
/* Call the procedure if FILTER and PROCESS IF don't prohibit it. */
- if (not_canceled
- && !FILTERED
- && (process_if_expr == NULL ||
- expr_evaluate (process_if_expr, temp_case, NULL) == 1.0))
- not_canceled = proc_func (temp_case);
+ if (not_canceled && !exclude_this_case ())
+ not_canceled = data->procfunc (temp_case, data->aux);
case_count++;
done:
- {
- long *lp;
+ clear_temp_case ();
- /* This case is finished. Initialize the variables for the next case. */
- for (lp = reinit_sysmis.vec; *lp != -1;)
- temp_case->data[*lp++].f = SYSMIS;
- for (lp = reinit_blanks.vec; *lp != -1;)
- memset (temp_case->data[*lp++].s, ' ', MAX_SHORT_STRING);
- }
-
return 1;
}
process_active_file_output_case (void)
{
vfm_sink_info.ncases++;
- vfm_sink->write ();
+ vfm_sink->class->write (vfm_sink, temp_case);
}
\f
/* Opening the active file. */
file--it's just a waste of time and space. */
vfm_sink_info.ncases = 0;
- vfm_sink_info.nval = default_dict.nval;
- vfm_sink_info.case_size = (sizeof (struct ccase)
- + (default_dict.nval - 1) * sizeof (union value));
+ vfm_sink_info.nval = dict_get_next_value_idx (default_dict);
+ vfm_sink_info.case_size = dict_get_case_size (default_dict);
if (vfm_sink == NULL)
{
- if (vfm_sink_info.case_size * vfm_source_info.ncases > MAX_WORKSPACE
- && !paging)
+ if (vfm_sink_info.case_size * vfm_source_info.ncases > set_max_workspace
+ && !workspace_overflow)
{
msg (MW, _("Workspace overflow predicted. Max workspace is "
"currently set to %d KB (%d cases at %d bytes each). "
- "Paging active file to disk."),
- MAX_WORKSPACE / 1024, MAX_WORKSPACE / vfm_sink_info.case_size,
+ "Writing active file to disk."),
+ set_max_workspace / 1024, set_max_workspace / vfm_sink_info.case_size,
vfm_sink_info.case_size);
- paging = 1;
+ workspace_overflow = 1;
}
-
- vfm_sink = paging ? &vfm_disk_stream : &vfm_memory_stream;
+
+ if (workspace_overflow)
+ vfm_sink = create_case_sink (&disk_sink_class, NULL);
+ else
+ vfm_sink = create_case_sink (&memory_sink_class, NULL);
}
}
int i;
/* Count up the number of `value's that will be output. */
- for (i = 0; i < temp_dict->nvar; i++)
- if (temp_dict->var[i]->name[0] != '#')
- {
- assert (temp_dict->var[i]->nv > 0);
- count_values += temp_dict->var[i]->nv;
- }
- assert (temporary == 2 || count_values <= temp_dict->nval);
+ for (i = 0; i < dict_get_var_cnt (temp_dict); i++)
+ {
+ struct variable *v = dict_get_var (temp_dict, i);
+
+ if (v->name[0] != '#')
+ {
+ assert (v->nv > 0);
+ count_values += v->nv;
+ }
+ }
+ assert (temporary == 2
+ || count_values <= dict_get_next_value_idx (temp_dict));
}
/* Compaction is only necessary if the number of `value's to output
differs from the number already present. */
compaction_nval = count_values;
- compaction_necessary = temporary == 2 || count_values != temp_dict->nval;
+ if (temporary == 2 || count_values != dict_get_next_value_idx (temp_dict))
+ compaction_necessary = 1;
+ else
+ compaction_necessary = 0;
- if (vfm_sink->init)
- vfm_sink->init ();
+ if (vfm_sink->class->open != NULL)
+ vfm_sink->class->open (vfm_sink);
}
/* Prepares the temporary case and compaction case. */
for (i = 0; i < default_dict.nvar; i++)
{
- variable *v = default_dict.var[i];
+ struct variable *v = default_dict.var[i];
if (ccase_index >= v->fv && ccase_index < v->fv + v->nv)
return default_dict.var[i]->name;
}
#endif
-/* Initializes temp_case from the vectors that say which `value's need
- to be initialized just once, and which ones need to be
+/* Initializes temp_case from the vectors that say which `value's
+ need to be initialized just once, and which ones need to be
re-initialized before every case. */
static void
vector_initialization (void)
{
- int i;
- long *lp;
-
- /* Just once. */
- for (i = 0; i < init_zero.n; i++)
- temp_case->data[init_zero.vec[i]].f = 0.0;
- for (i = 0; i < init_blanks.n; i++)
- memset (temp_case->data[init_blanks.vec[i]].s, ' ', MAX_SHORT_STRING);
-
- /* These vectors need to be repeatedly accessed, so we add a
- sentinel to (hopefully) improve speed. */
- vec_insert (&reinit_sysmis, -1);
- vec_insert (&reinit_blanks, -1);
-
- for (lp = reinit_sysmis.vec; *lp != -1;)
- temp_case->data[*lp++].f = SYSMIS;
- for (lp = reinit_blanks.vec; *lp != -1;)
- memset (temp_case->data[*lp++].s, ' ', MAX_SHORT_STRING);
-
-#if DEBUGGING
- printf ("vfm: init_zero=");
- for (i = 0; i < init_zero.n; i++)
- printf ("%s%s", i ? "," : "", index_to_varname (init_zero.vec[i]));
- printf (" init_blanks=");
- for (i = 0; i < init_blanks.n; i++)
- printf ("%s%s", i ? "," : "", index_to_varname (init_blanks.vec[i]));
- printf (" reinit_sysmis=");
- for (lp = reinit_sysmis.vec; *lp != -1; lp++)
- printf ("%s%s", lp != reinit_sysmis.vec ? "," : "",
- index_to_varname (*lp));
- printf (" reinit_blanks=");
- for (lp = reinit_blanks.vec; *lp != -1; lp++)
- printf ("%s%s", lp != reinit_blanks.vec ? "," : "",
- index_to_varname (*lp));
- printf ("\n");
-#endif
-}
-
-/* Sets filter_index to an appropriate value. */
-static void
-setup_filter (void)
-{
- filter_index = -1;
+ size_t var_cnt = dict_get_var_cnt (default_dict);
+ size_t i;
- if (default_dict.filter_var[0])
+ for (i = 0; i < var_cnt; i++)
{
- struct variable *fv = find_variable (default_dict.filter_var);
-
- if (fv == NULL || fv->type == ALPHA)
- default_dict.filter_var[0] = 0;
+ struct variable *v = dict_get_var (default_dict, i);
+
+ if (v->type == NUMERIC)
+ {
+ if (v->reinit)
+ temp_case->data[v->fv].f = 0.0;
+ else
+ temp_case->data[v->fv].f = SYSMIS;
+ }
else
- {
- filter_index = fv->index;
- filter_var = fv;
- }
+ memset (temp_case->data[v->fv].s, ' ', v->width);
}
}
lag_head = 0;
lag_queue = xmalloc (n_lag * sizeof *lag_queue);
for (i = 0; i < n_lag; i++)
- lag_queue[i] = xmalloc (temp_dict->nval * sizeof **lag_queue);
+ lag_queue[i] = xmalloc (dict_get_case_size (temp_dict));
}
/* There is a lot of potential confusion in the vfm and related
if (!temporary)
{
temp_trns = n_trns;
- temp_dict = &default_dict;
+ temp_dict = default_dict;
}
/* No cases passed to the procedure yet. */
arrange_compaction ();
make_temp_case ();
vector_initialization ();
- setup_randomize ();
discard_ctl_stack ();
- setup_filter ();
setup_lag ();
/* Debug output. */
\f
/* Closes the active file. */
static void
-close_active_file (void)
+close_active_file (struct write_case_data *data)
{
/* Close the current case group. */
- if (case_count && end_func != NULL)
- end_func ();
+ if (case_count && data->endfunc != NULL)
+ data->endfunc (data->aux);
/* Stop lagging (catch up?). */
if (n_lag)
off TEMPORARY. */
if (temporary)
{
- restore_dictionary (temp_dict);
+ dict_destroy (default_dict);
+ default_dict = temp_dict;
temp_dict = NULL;
}
- /* The default dictionary assumes the compacted data size. */
- default_dict.nval = compaction_nval;
+ /* Finish compaction. */
+ if (compaction_necessary)
+ finish_compaction ();
/* Old data sink --> New data source. */
- if (vfm_source && vfm_source->destroy_source)
- vfm_source->destroy_source ();
-
- vfm_source = vfm_sink;
+ if (vfm_source != NULL)
+ {
+ if (vfm_source->class->destroy != NULL)
+ vfm_source->class->destroy (vfm_source);
+ free (vfm_source);
+ }
+
+ vfm_source = vfm_sink->class->make_source (vfm_sink);
vfm_source_info.ncases = vfm_sink_info.ncases;
vfm_source_info.nval = compaction_nval;
vfm_source_info.case_size = (sizeof (struct ccase)
+ (compaction_nval - 1) * sizeof (union value));
- if (vfm_source->mode)
- vfm_source->mode ();
/* Old data sink is gone now. */
+ free (vfm_sink);
vfm_sink = NULL;
- /* Finish compaction. */
- if (compaction_necessary)
- finish_compaction ();
+ /* Cancel TEMPORARY. */
cancel_temporary ();
/* Free temporary cases. */
process_if_expr = NULL;
/* Cancel FILTER if temporary. */
- if (filter_index != -1 && !FILTER_before_TEMPORARY)
- default_dict.filter_var[0] = 0;
+ if (dict_get_filter (default_dict) != NULL && !FILTER_before_TEMPORARY)
+ dict_set_filter (default_dict, NULL);
/* Cancel transformations. */
cancel_transformations ();
- /* Clear value-initialization vectors. */
- vec_clear (&init_zero);
- vec_clear (&init_blanks);
- vec_clear (&reinit_sysmis);
- vec_clear (&reinit_blanks);
-
/* Turn off case limiter. */
- default_dict.N = 0;
+ dict_set_case_limit (default_dict, 0);
/* Clear VECTOR vectors. */
- {
- int i;
-
- for (i = 0; i < nvec; i++)
- free (vec[i].v);
- free (vec);
- vec = NULL;
- nvec = 0;
- }
+ dict_clear_vectors (default_dict);
debug_printf (("vfm: procedure complete\n\n"));
}
\f
/* Disk case stream. */
-/* Associated files. */
-FILE *disk_source_file;
-FILE *disk_sink_file;
-
/* Initializes the disk sink. */
static void
-disk_stream_init (void)
+disk_sink_create (struct case_sink *sink)
{
- disk_sink_file = tmpfile ();
- if (!disk_sink_file)
+ sink->aux = tmpfile ();
+ if (!sink->aux)
{
msg (ME, _("An error occurred attempting to create a temporary "
"file for use as the active file: %s."),
}
}
-/* Reads all cases from the disk source and passes them one by one to
- write_case(). */
-static void
-disk_stream_read (void)
-{
- int i;
-
- for (i = 0; i < vfm_source_info.ncases; i++)
- {
- if (!fread (temp_case, vfm_source_info.case_size, 1, disk_source_file))
- {
- msg (ME, _("An error occurred while attempting to read from "
- "a temporary file created for the active file: %s."),
- strerror (errno));
- err_failure ();
- return;
- }
-
- if (!write_case ())
- return;
- }
-}
-
/* Writes temp_case to the disk sink. */
static void
-disk_stream_write (void)
+disk_sink_write (struct case_sink *sink, struct ccase *c)
{
+ FILE *file = sink->aux;
union value *src_case;
if (compaction_necessary)
{
- compact_case (compaction_case, temp_case);
- src_case = (union value *) compaction_case;
+ compact_case (compaction_case, c);
+ src_case = compaction_case->data;
}
- else src_case = (union value *) temp_case;
+ else src_case = c->data;
- if (fwrite (src_case, sizeof *src_case * compaction_nval, 1,
- disk_sink_file) != 1)
+ if (fwrite (src_case, sizeof *src_case * compaction_nval, 1, file) != 1)
{
msg (ME, _("An error occurred while attempting to write to a "
"temporary file used as the active file: %s."),
}
}
-/* Switches the stream from a sink to a source. */
+/* Destroys the sink's internal data. */
static void
-disk_stream_mode (void)
+disk_sink_destroy (struct case_sink *sink)
{
- /* Rewind the sink. */
- if (fseek (disk_sink_file, 0, SEEK_SET) != 0)
+ FILE *file = sink->aux;
+ if (file != NULL)
+ fclose (file);
+}
+
+/* Closes and destroys the sink and returns a disk source to read
+ back the written data. */
+static struct case_source *
+disk_sink_make_source (struct case_sink *sink)
+{
+ FILE *file = sink->aux;
+
+ /* Rewind the file. */
+ assert (file != NULL);
+ if (fseek (file, 0, SEEK_SET) != 0)
{
msg (ME, _("An error occurred while attempting to rewind a "
"temporary file used as the active file: %s."),
err_failure ();
}
- /* Sink --> source variables. */
- disk_source_file = disk_sink_file;
+ return create_case_source (&disk_source_class, file);
}
-/* Destroys the source's internal data. */
+/* Disk sink. */
+const struct case_sink_class disk_sink_class =
+ {
+ "disk",
+ disk_sink_create,
+ disk_sink_write,
+ disk_sink_destroy,
+ disk_sink_make_source,
+ };
+\f
+/* Disk source. */
+
+/* Reads all cases from the disk source and passes them one by one to
+ write_case(). */
static void
-disk_stream_destroy_source (void)
+disk_source_read (struct case_source *source,
+ write_case_func *write_case, write_case_data wc_data)
{
- if (disk_source_file)
+ FILE *file = source->aux;
+ int i;
+
+ for (i = 0; i < vfm_source_info.ncases; i++)
{
- fclose (disk_source_file);
- disk_source_file = NULL;
+ if (!fread (temp_case, vfm_source_info.case_size, 1, file))
+ {
+ msg (ME, _("An error occurred while attempting to read from "
+ "a temporary file created for the active file: %s."),
+ strerror (errno));
+ err_failure ();
+ return;
+ }
+
+ if (!write_case (wc_data))
+ return;
}
}
-/* Destroys the sink's internal data. */
+/* Destroys the source's internal data. */
static void
-disk_stream_destroy_sink (void)
+disk_source_destroy (struct case_source *source)
{
- if (disk_sink_file)
- {
- fclose (disk_sink_file);
- disk_sink_file = NULL;
- }
+ FILE *file = source->aux;
+ if (file != NULL)
+ fclose (file);
}
-/* Disk stream. */
-struct case_stream vfm_disk_stream =
+/* Disk source. */
+const struct case_source_class disk_source_class =
{
- disk_stream_init,
- disk_stream_read,
- disk_stream_write,
- disk_stream_mode,
- disk_stream_destroy_source,
- disk_stream_destroy_sink,
"disk",
+ disk_source_read,
+ disk_source_destroy,
};
\f
/* Memory case stream. */
-/* List of cases stored in the stream. */
-struct case_list *memory_source_cases;
-struct case_list *memory_sink_cases;
-
-/* Current case. */
-struct case_list *memory_sink_iter;
+/* Memory sink data. */
+struct memory_sink_info
+ {
+ int max_cases; /* Maximum cases before switching to disk. */
+ struct case_list *head; /* First case in list. */
+ struct case_list *tail; /* Last case in list. */
+ };
-/* Maximum number of cases. */
-int memory_sink_max_cases;
+/* Memory source data. */
+struct memory_source_info
+ {
+ struct case_list *cases; /* List of cases. */
+ };
-/* Initializes the memory stream variables for writing. */
static void
-memory_stream_init (void)
+memory_sink_create (struct case_sink *sink)
{
- memory_sink_cases = NULL;
- memory_sink_iter = NULL;
+ struct memory_sink_info *info;
- assert (compaction_nval);
- memory_sink_max_cases = MAX_WORKSPACE / (sizeof (union value) * compaction_nval);
-}
+ sink->aux = info = xmalloc (sizeof *info);
-/* Reads the case stream from memory and passes it to write_case(). */
-static void
-memory_stream_read (void)
-{
- while (memory_source_cases != NULL)
- {
- memcpy (temp_case, &memory_source_cases->c, vfm_source_info.case_size);
-
- {
- struct case_list *current = memory_source_cases;
- memory_source_cases = memory_source_cases->next;
- free (current);
- }
-
- if (!write_case ())
- return;
- }
+ assert (compaction_nval > 0);
+ info->max_cases = set_max_workspace / (sizeof (union value) * compaction_nval);
+ info->head = info->tail = NULL;
}
-/* Writes temp_case to the memory stream. */
static void
-memory_stream_write (void)
+memory_sink_write (struct case_sink *sink, struct ccase *c)
{
- struct case_list *new_case = malloc (sizeof (struct case_list)
- + ((compaction_nval - 1)
- * sizeof (union value)));
+ struct memory_sink_info *info = sink->aux;
+ size_t case_size;
+ struct case_list *new_case;
+
+ case_size = sizeof (struct case_list)
+ + ((compaction_nval - 1) * sizeof (union value));
+ new_case = malloc (case_size);
/* If we've got memory to spare then add it to the linked list. */
- if (vfm_sink_info.ncases <= memory_sink_max_cases && new_case != NULL)
+ if (vfm_sink_info.ncases <= info->max_cases && new_case != NULL)
{
- if (compaction_necessary)
- compact_case (&new_case->c, temp_case);
+ /* Append case to linked list. */
+ new_case->next = NULL;
+ if (info->head != NULL)
+ info->tail->next = new_case;
else
- memcpy (&new_case->c, temp_case, sizeof (union value) * compaction_nval);
+ info->head = new_case;
+ info->tail = new_case;
- /* Append case to linked list. */
- if (memory_sink_cases)
- memory_sink_iter = memory_sink_iter->next = new_case;
+ /* Copy data into case. */
+ if (compaction_necessary)
+ compact_case (&new_case->c, c);
else
- memory_sink_iter = memory_sink_cases = new_case;
+ memcpy (&new_case->c, c, sizeof (union value) * compaction_nval);
}
else
{
/* Notify the user. */
if (!new_case)
- msg (MW, _("Virtual memory exhausted. Paging active file "
+ msg (MW, _("Virtual memory exhausted. Writing active file "
"to disk."));
else
msg (MW, _("Workspace limit of %d KB (%d cases at %d bytes each) "
- "overflowed. Paging active file to disk."),
- MAX_WORKSPACE / 1024, memory_sink_max_cases,
+ "overflowed. Writing active file to disk."),
+ set_max_workspace / 1024, info->max_cases,
compaction_nval * sizeof (union value));
free (new_case);
/* Switch to a disk sink. */
- vfm_sink = &vfm_disk_stream;
- vfm_sink->init ();
- paging = 1;
-
- /* Terminate the list. */
- if (memory_sink_iter)
- memory_sink_iter->next = NULL;
+ vfm_sink = create_case_sink (&disk_sink_class, NULL);
+ vfm_sink->class->open (vfm_sink);
+ workspace_overflow = 1;
/* Write the cases to disk and destroy them. We can't call
vfm->sink->write() because of compaction. */
- for (cur = memory_sink_cases; cur; cur = next)
+ for (cur = info->head; cur; cur = next)
{
next = cur->next;
if (fwrite (cur->c.data, sizeof (union value) * compaction_nval, 1,
- disk_sink_file) != 1)
+ vfm_sink->aux) != 1)
{
msg (ME, _("An error occurred while attempting to "
"write to a temporary file created as the "
- "active file, while paging to disk: %s."),
+ "active file: %s."),
strerror (errno));
err_failure ();
}
}
/* Write the current case to disk. */
- vfm_sink->write ();
+ vfm_sink->class->write (vfm_sink, c);
}
}
/* If the data is stored in memory, causes it to be written to disk.
To be called only *between* procedure()s, not within them. */
void
-page_to_disk (void)
+write_active_file_to_disk (void)
{
- if (vfm_source == &vfm_memory_stream)
+ if (case_source_is_class (vfm_source, &memory_source_class))
{
+ struct memory_source_info *info = vfm_source->aux;
+
/* Switch to a disk sink. */
- vfm_sink = &vfm_disk_stream;
- vfm_sink->init ();
- paging = 1;
+ vfm_sink = create_case_sink (&disk_sink_class, NULL);
+ vfm_sink->class->open (vfm_sink);
+ workspace_overflow = 1;
/* Write the cases to disk and destroy them. We can't call
vfm->sink->write() because of compaction. */
{
struct case_list *cur, *next;
- for (cur = memory_source_cases; cur; cur = next)
+ for (cur = info->cases; cur; cur = next)
{
next = cur->next;
if (fwrite (cur->c.data, sizeof *cur->c.data * compaction_nval, 1,
- disk_sink_file) != 1)
+ vfm_sink->aux) != 1)
{
msg (ME, _("An error occurred while attempting to "
"write to a temporary file created as the "
- "active file, while paging to disk: %s."),
+ "active file: %s."),
strerror (errno));
err_failure ();
}
}
}
- vfm_source = &vfm_disk_stream;
- vfm_source->mode ();
-
+ vfm_source = vfm_sink->class->make_source (vfm_sink);
vfm_sink = NULL;
}
}
-/* Switch the memory stream from sink to source mode. */
+/* Destroy all memory sink data. */
static void
-memory_stream_mode (void)
+memory_sink_destroy (struct case_sink *sink)
{
- /* Terminate the list. */
- if (memory_sink_iter)
- memory_sink_iter->next = NULL;
+ struct memory_sink_info *info = sink->aux;
+ struct case_list *cur, *next;
+
+ for (cur = info->head; cur; cur = next)
+ {
+ next = cur->next;
+ free (cur);
+ }
+ free (info);
+}
+
+/* Switch the memory stream from sink to source mode. */
+static struct case_source *
+memory_sink_make_source (struct case_sink *sink)
+{
+ struct memory_sink_info *sink_info = sink->aux;
+ struct memory_source_info *source_info;
- /* Sink --> source variables. */
- memory_source_cases = memory_sink_cases;
- memory_sink_cases = NULL;
+ source_info = xmalloc (sizeof *source_info);
+ source_info->cases = sink_info->head;
+
+ free (sink_info);
+
+ return create_case_source (&memory_source_class, source_info);
}
-/* Destroy all memory source data. */
+const struct case_sink_class memory_sink_class =
+ {
+ "memory",
+ memory_sink_create,
+ memory_sink_write,
+ memory_sink_destroy,
+ memory_sink_make_source,
+ };
+
+/* Reads the case stream from memory and passes it to write_case(). */
static void
-memory_stream_destroy_source (void)
+memory_source_read (struct case_source *source,
+ write_case_func *write_case, write_case_data wc_data)
{
- struct case_list *cur, *next;
-
- for (cur = memory_source_cases; cur; cur = next)
+ struct memory_source_info *info = source->aux;
+
+ while (info->cases != NULL)
{
- next = cur->next;
- free (cur);
+ struct case_list *iter = info->cases;
+ info->cases = iter->next;
+ memcpy (temp_case, &iter->c, vfm_source_info.case_size);
+ free (iter);
+
+ if (!write_case (wc_data))
+ return;
}
- memory_source_cases = NULL;
}
-/* Destroy all memory sink data. */
+/* Destroy all memory source data. */
static void
-memory_stream_destroy_sink (void)
+memory_source_destroy (struct case_source *source)
{
+ struct memory_source_info *info = source->aux;
struct case_list *cur, *next;
- for (cur = memory_sink_cases; cur; cur = next)
+ for (cur = info->cases; cur; cur = next)
{
next = cur->next;
free (cur);
}
- memory_sink_cases = NULL;
+ free (info);
}
-
+
+struct case_list *
+memory_source_get_cases (const struct case_source *source)
+{
+ struct memory_source_info *info = source->aux;
+
+ return info->cases;
+}
+
+void
+memory_source_set_cases (const struct case_source *source,
+ struct case_list *cases)
+{
+ struct memory_source_info *info = source->aux;
+
+ info->cases = cases;
+}
+
/* Memory stream. */
-struct case_stream vfm_memory_stream =
+const struct case_source_class memory_source_class =
{
- memory_stream_init,
- memory_stream_read,
- memory_stream_write,
- memory_stream_mode,
- memory_stream_destroy_source,
- memory_stream_destroy_sink,
"memory",
+ memory_source_read,
+ memory_source_destroy,
};
\f
-#undef DEBUGGING
#include "debug-print.h"
/* Add temp_case to the lag queue. */
{
if (lag_count < n_lag)
lag_count++;
- memcpy (lag_queue[lag_head], temp_case, sizeof (union value) * temp_dict->nval);
+ memcpy (lag_queue[lag_head], temp_case,
+ dict_get_case_size (temp_dict));
if (++lag_head >= n_lag)
lag_head = 0;
}
otherwise. Do not call this function again after it has returned
zero once. */
int
-procedure_write_case (void)
+procedure_write_case (write_case_data wc_data)
{
/* Index of current transformation. */
int cur_trns;
lag_case ();
vfm_sink_info.ncases++;
- vfm_sink->write ();
+ vfm_sink->class->write (vfm_sink, temp_case);
- if (default_dict.N)
- more_cases = vfm_sink_info.ncases < default_dict.N;
+ if (dict_get_case_limit (default_dict))
+ more_cases = (vfm_sink_info.ncases
+ < dict_get_case_limit (default_dict));
}
/* Are we done? */
}
/* Call the beginning of group function. */
- if (!case_count && begin_func != NULL)
- begin_func ();
+ if (!case_count && wc_data->beginfunc != NULL)
+ wc_data->beginfunc (wc_data->aux);
/* Call the procedure if there is one and FILTER and PROCESS IF
don't prohibit it. */
- if (proc_func != NULL
- && !FILTERED
- && (process_if_expr == NULL ||
- expr_evaluate (process_if_expr, temp_case, NULL) == 1.0))
- proc_func (temp_case);
+ if (wc_data->procfunc != NULL && !exclude_this_case ())
+ wc_data->procfunc (temp_case, wc_data->aux);
case_count++;
done:
debug_putc ('\n', stdout);
-
- {
- long *lp;
- /* This case is finished. Initialize the variables for the next case. */
- for (lp = reinit_sysmis.vec; *lp != -1;)
- temp_case->data[*lp++].f = SYSMIS;
- for (lp = reinit_blanks.vec; *lp != -1;)
- memset (temp_case->data[*lp++].s, ' ', MAX_SHORT_STRING);
- }
+ clear_temp_case ();
/* Return previously determined value. */
return more_cases;
}
+/* Clears the variables in the temporary case that need to be
+ cleared between processing cases. */
+static void
+clear_temp_case (void)
+{
+ /* FIXME? This is linear in the number of variables, but
+ doesn't need to be, so it's an easy optimization target. */
+ size_t var_cnt = dict_get_var_cnt (default_dict);
+ size_t i;
+
+ for (i = 0; i < var_cnt; i++)
+ {
+ struct variable *v = dict_get_var (default_dict, i);
+ if (v->init && v->reinit)
+ {
+ if (v->type == NUMERIC)
+ temp_case->data[v->fv].f = SYSMIS;
+ else
+ memset (temp_case->data[v->fv].s, ' ', v->width);
+ }
+ }
+}
+
+/* Returns nonzero if this case should be exclude as specified on
+ FILTER or PROCESS IF, otherwise zero. */
+static int
+exclude_this_case (void)
+{
+ /* FILTER. */
+ struct variable *filter_var = dict_get_filter (default_dict);
+ if (filter_var != NULL)
+ {
+ double f = temp_case->data[filter_var->fv].f;
+ if (f == 0.0 || f == SYSMIS || is_num_user_missing (f, filter_var))
+ return 1;
+ }
+
+ /* PROCESS IF. */
+ if (process_if_expr != NULL
+ && expr_evaluate (process_if_expr, temp_case, NULL) != 1.0)
+ return 1;
+
+ return 0;
+}
+
/* Appends TRNS to t_trns[], the list of all transformations to be
performed on data as it is read from the active file. */
void
static void
dump_splits (struct ccase *c)
{
- struct variable **iter;
+ struct variable *const *split;
struct tab_table *t;
+ size_t split_cnt;
int i;
- t = tab_create (3, default_dict.n_splits + 1, 0);
+ split_cnt = dict_get_split_cnt (default_dict);
+ t = tab_create (3, split_cnt + 1, 0);
tab_dim (t, tab_natural_dimensions);
- tab_vline (t, TAL_1 | TAL_SPACING, 1, 0, default_dict.n_splits);
- tab_vline (t, TAL_1 | TAL_SPACING, 2, 0, default_dict.n_splits);
+ tab_vline (t, TAL_1 | TAL_SPACING, 1, 0, split_cnt);
+ tab_vline (t, TAL_1 | TAL_SPACING, 2, 0, split_cnt);
tab_text (t, 0, 0, TAB_NONE, _("Variable"));
tab_text (t, 1, 0, TAB_LEFT, _("Value"));
tab_text (t, 2, 0, TAB_LEFT, _("Label"));
- for (iter = default_dict.splits, i = 0; *iter; iter++, i++)
+ split = dict_get_split_vars (default_dict);
+ for (i = 0; i < split_cnt; i++)
{
- struct variable *v = *iter;
+ struct variable *v = split[i];
char temp_buf[80];
- char *val_lab;
+ const char *val_lab;
assert (v->type == NUMERIC || v->type == ALPHA);
tab_text (t, 0, i + 1, TAB_LEFT | TAT_PRINTF, "%s", v->name);
- {
- union value val = c->data[v->fv];
- if (v->type == ALPHA)
- val.c = c->data[v->fv].s;
- data_out (temp_buf, &v->print, &val);
- }
+ data_out (temp_buf, &v->print, &c->data[v->fv]);
temp_buf[v->print.w] = 0;
tab_text (t, 1, i + 1, TAT_PRINTF, "%.*s", v->print.w, temp_buf);
- val_lab = get_val_lab (v, c->data[v->fv], 0);
+ val_lab = val_labs_find (v->val_labs, c->data[v->fv]);
if (val_lab)
tab_text (t, 2, i + 1, TAB_LEFT, val_lab);
}
SPLIT FILE is active. This function forms a wrapper around that
procfunc by dividing the input into series. */
static int
-SPLIT_FILE_procfunc (struct ccase *c)
+SPLIT_FILE_procfunc (struct ccase *c, void *data_)
{
+ struct write_case_data *data = data_;
static struct ccase *prev_case;
- struct variable **iter;
+ struct variable *const *split;
+ size_t split_cnt;
+ size_t i;
/* The first case always begins a new series. We also need to
preserve the values of the case for later comparison. */
memcpy (prev_case, c, vfm_sink_info.case_size);
dump_splits (c);
- if (virt_begin_func != NULL)
- virt_begin_func ();
+ if (data->beginfunc != NULL)
+ data->beginfunc (data->aux);
- return virt_proc_func (c);
+ return data->procfunc (c, data->aux);
}
/* Compare the value of each SPLIT FILE variable to the values on
the previous case. */
- for (iter = default_dict.splits; *iter; iter++)
+ split = dict_get_split_vars (default_dict);
+ split_cnt = dict_get_split_cnt (default_dict);
+ for (i = 0; i < split_cnt; i++)
{
- struct variable *v = *iter;
+ struct variable *v = split[i];
switch (v->type)
{
case NUMERIC:
- if (approx_ne (c->data[v->fv].f, prev_case->data[v->fv].f))
+ if (c->data[v->fv].f != prev_case->data[v->fv].f)
goto not_equal;
break;
case ALPHA:
assert (0);
}
}
- return virt_proc_func (c);
+ return data->procfunc (c, data->aux);
not_equal:
/* The values of the SPLIT FILE variable are different from the
values on the previous case. That means that it's time to begin
a new series. */
- if (end_func != NULL)
- end_func ();
+ if (data->endfunc != NULL)
+ data->endfunc (data->aux);
dump_splits (c);
- if (virt_begin_func != NULL)
- virt_begin_func ();
+ if (data->beginfunc != NULL)
+ data->beginfunc (data->aux);
memcpy (prev_case, c, vfm_sink_info.case_size);
- return virt_proc_func (c);
+ return data->procfunc (c, data->aux);
}
\f
/* Case compaction. */
{
int i;
int nval = 0;
+ size_t var_cnt;
assert (compaction_necessary);
/* Copy all the variables except the scratch variables from SRC to
DEST. */
- for (i = 0; i < default_dict.nvar; i++)
+ var_cnt = dict_get_var_cnt (default_dict);
+ for (i = 0; i < var_cnt; i++)
{
- struct variable *v = default_dict.var[i];
+ struct variable *v = dict_get_var (default_dict, i);
if (v->name[0] == '#')
continue;
static void
finish_compaction (void)
{
- int copy_index = 0;
- int nval = 0;
int i;
- for (i = 0; i < default_dict.nvar; i++)
+ for (i = 0; i < dict_get_var_cnt (default_dict); )
{
- struct variable *v = default_dict.var[i];
-
- if (v->name[0] == '#')
- {
- clear_variable (&default_dict, v);
- free (v);
- continue;
- }
+ struct variable *v = dict_get_var (default_dict, i);
- v->fv = nval;
- if (v->type == NUMERIC)
- nval++;
+ if (v->name[0] == '#')
+ dict_delete_var (default_dict, v);
else
- nval += DIV_RND_UP (v->width, sizeof (union value));
-
- default_dict.var[copy_index++] = v;
- }
- if (copy_index != default_dict.nvar)
- {
- default_dict.var = xrealloc (default_dict.var,
- sizeof *default_dict.var * copy_index);
- default_dict.nvar = copy_index;
+ i++;
}
+ dict_compact_values (default_dict);
+}
+
+struct case_source *
+create_case_source (const struct case_source_class *class, void *aux)
+{
+ struct case_source *source = xmalloc (sizeof *source);
+ source->class = class;
+ source->aux = aux;
+ return source;
+}
+
+int
+case_source_is_complex (const struct case_source *source)
+{
+ return source != NULL && (source->class == &input_program_source_class
+ || source->class == &file_type_source_class);
+}
+
+int
+case_source_is_class (const struct case_source *source,
+ const struct case_source_class *class)
+{
+ return source != NULL && source->class == class;
+
+}
+
+struct case_sink *
+create_case_sink (const struct case_sink_class *class, void *aux)
+{
+ struct case_sink *sink = xmalloc (sizeof *sink);
+ sink->class = class;
+ sink->aux = aux;
+ return sink;
}
-
projects / pspp-builds.git / blobdiff