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svg_stats.c
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svg_stats.c
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/*
* svg_stats.c: Functions used by sadf to display statistics in SVG format.
* (C) 2016-2024 by Sebastien GODARD (sysstat <at> orange.fr)
*
***************************************************************************
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
* for more details. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program; if not, write to the Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA *
***************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <float.h>
#include "sa.h"
#include "ioconf.h"
#ifdef USE_NLS
#include <locale.h>
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
extern uint64_t flags;
extern int palette;
unsigned int svg_colors[SVG_COL_PALETTE_NR][SVG_COL_PALETTE_SIZE] =
{{0x00cc00, 0xff00bf, 0x00ffff, 0xff0000, /* Default palette */
0xe85f00, 0x0000ff, 0x006020, 0x7030a0,
0xffff00, 0x666635, 0xd60093, 0x00bfbf,
0xcc3300, 0x50040f, 0xffffbf, 0x193d55,
0x000000, 0xffffff, 0x202020, 0xffff00,
0xffff00, 0x808080, 0xa52a2a, 0xff0000},
{0x000000, 0x1a1aff, 0x1affb2, 0xb21aff, /* Custom color palette */
0x1ab2ff, 0xff1a1a, 0xffb31a, 0xb2ff1a,
0xefefef, 0x000000, 0x1a1aff, 0x1affb2,
0xb21aff, 0x1ab2ff, 0xff1a1a, 0xffb31a,
0xffffff, 0x000000, 0xbebebe, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000},
{0x696969, 0xbebebe, 0x000000, 0xa9a9a9, /* Black & white palette */
0x708090, 0xc0c0c0, 0x808080, 0xd3d3d3,
0x909090, 0x696969, 0xbebebe, 0x000000,
0x000000, 0xa9a9a9, 0xc0c0c0, 0x808080,
0xffffff, 0x000000, 0xbebebe, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000}};
/*
***************************************************************************
* Find the min and max values of all the graphs that will be drawn in the
* same view. The graphs have their own min and max values in
* spmin[pos...pos+n-1] and spmax[pos...pos+n-1].
*
* IN:
* @pos Position in array for the first graph extrema value.
* @n Number of graphs to scan (number of metrics in current view).
* @spmin Buffer with min values.
* @spmax Buffer with max values.
*
* OUT:
* @gmin Global min value found.
* @gmax Global max value found.
***************************************************************************
*/
void get_global_extrema(int pos, int n, double *spmin, double *spmax,
double *gmin, double *gmax)
{
int i;
/*
* Init global min and max values for current view with
* min and max values for first metric in view.
*/
*gmin = *(spmin + pos);
*gmax = *(spmax + pos);
/* Now check min and max values of other metrics in current view */
for (i = 1; i < n; i++) {
if (*(spmin + pos + i) < *gmin) {
*gmin = *(spmin + pos + i);
}
if (*(spmax + pos + i) > *gmax) {
*gmax = *(spmax + pos + i);
}
}
}
/*
***************************************************************************
* Allocate arrays used to save graphs data.
* Buffers for min and max values may also be reallocated.
* @n arrays of chars are allocated for @n graphs to draw. A pointer on this
* array is returned. This is equivalent to "char data[][n]" where each
* element is of indeterminate size and will contain the graph data (eg.
* << path d="M12,14 L13,16..." ... >>.
* The size of element data[i] is given by outsize[i].
*
* IN:
* @a Activity structure.
* @n Number of graphs to draw for current activity.
*
* OUT:
* @outsize Array that will contain the sizes of each element in array
* of chars. Equivalent to "int outsize[n]" with
* outsize[n] = sizeof(data[][n]).
*
* RETURNS:
* Pointer on array of arrays of chars that will contain the graphs data.
*
* NB: @min and @max arrays contain values in the same order as the fields
* in the statistics structure.
***************************************************************************
*/
char **allocate_graph_lines(struct activity *a, int n, int **outsize)
{
char **out;
char *out_p;
int i;
/*
* Allocate an array of pointers. Each of these pointers will
* be an array of chars.
*/
if ((out = (char **) malloc(n * sizeof(char *))) == NULL) {
perror("malloc");
exit(4);
}
/* Allocate array that will contain the size of each array of chars */
if ((*outsize = (int *) malloc(n * sizeof(int))) == NULL) {
perror("malloc");
exit(4);
}
/* Allocate arrays of chars that will contain graphs data */
for (i = 0; i < n; i++) {
if ((out_p = (char *) malloc(CHUNKSIZE * sizeof(char))) == NULL) {
perror("malloc");
exit(4);
}
*(out + i) = out_p;
*out_p = '\0'; /* Reset string so that it can be safely strncat()'d later */
*(*outsize + i) = CHUNKSIZE; /* Each array of chars has a default size of CHUNKSIZE */
}
/* Reallocate buffers for min and max values if necessary */
if (a->item_list_sz > a->nr_allocated) {
allocate_minmax_buf(a, a->item_list_sz, flags);
}
return out;
}
/*
***************************************************************************
* Save SVG code for current graph.
*
* IN:
* @data SVG code to append to current graph definition.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
*
* OUT:
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
***************************************************************************
*/
void save_svg_data(char *data, char **out, int *outsize)
{
char *out_p;
int len;
out_p = *out;
/* Determine space left in array */
len = *outsize - strlen(out_p) - 1;
if (strlen(data) >= len) {
/*
* If current array of chars doesn't have enough space left
* then reallocate it with CHUNKSIZE more bytes.
*/
SREALLOC(out_p, char, *outsize + CHUNKSIZE);
*out = out_p;
*outsize += CHUNKSIZE;
len += CHUNKSIZE;
}
strncat(out_p, data, len);
}
/*
***************************************************************************
* Update line graph definition by appending current X,Y coordinates.
*
* IN:
* @timetag Timestamp in seconds since the epoch for current sample
* stats. Will be used as X coordinate.
* @value Value of current sample metric. Will be used as Y coordinate.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
* @restart Set to TRUE if a RESTART record has been read since the last
* statistics sample.
*
* OUT:
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
***************************************************************************
*/
void lnappend(unsigned long long timetag, double value, char **out, int *outsize,
int restart)
{
char data[128];
/* Prepare additional graph definition data */
snprintf(data, sizeof(data), " %c%llu,%.2f", restart ? 'M' : 'L', timetag, value);
data[sizeof(data) - 1] = '\0';
save_svg_data(data, out, outsize);
}
/*
***************************************************************************
* Update line graph definition by appending current X,Y coordinates. Use
* (unsigned long) integer values here.
*
* IN:
* @timetag Timestamp in seconds since the epoch for current sample
* stats. Will be used as X coordinate.
* @value Value of current sample metric. Will be used as Y coordinate.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
* @restart Set to TRUE if a RESTART record has been read since the last
* statistics sample.
*
* OUT:
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
***************************************************************************
*/
void lniappend(unsigned long long timetag, unsigned long long value, char **out,
int *outsize, int restart)
{
char data[128];
/* Prepare additional graph definition data */
snprintf(data, sizeof(data), " %c%llu,%llu", restart ? 'M' : 'L', timetag, value);
data[sizeof(data) - 1] = '\0';
save_svg_data(data, out, outsize);
}
/*
***************************************************************************
* Update bar graph definition by adding a new rectangle.
*
* IN:
* @timetag Timestamp in seconds since the epoch for current sample
* stats. Will be used as X coordinate.
* @value Value of current sample metric. Will be used as rectangle
* height.
* @offset Offset for Y coordinate.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
* @dt Interval of time in seconds between current and previous
* sample.
* @hval TRUE if value may be greater than 100%.
*
* OUT:
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
***************************************************************************
*/
void brappend(unsigned long long timetag, double offset, double value, char **out,
int *outsize, unsigned long long dt, int hval)
{
char data[128];
unsigned long long t = 0;
/* Prepare additional graph definition data */
if ((value == 0.0) || (dt == 0))
/* Don't draw a flat rectangle! */
return;
if (dt < timetag) {
t = timetag - dt;
}
snprintf(data, sizeof(data), "<rect x=\"%llu\" y=\"%.2f\" height=\"%.2f\" width=\"%llu\"/>",
t,
hval ? offset : MINIMUM(offset, 100.0),
hval ? value : MINIMUM(value, (100.0 - offset)),
dt);
data[sizeof(data) - 1] = '\0';
save_svg_data(data, out, outsize);
}
/*
***************************************************************************
* Update CPU graph and min/max values for each metric.
*
* IN:
* @timetag Timestamp in seconds since the epoch for current sample
* stats. Will be used as X coordinate.
* @offset Offset for Y coordinate.
* @value Value of current CPU metric. Will be used as rectangle
* height.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
* @dt Interval of time in seconds between current and previous
* sample.
* @spmin Min value already found for this CPU metric.
* @spmax Max value already found for this CPU metric.
*
* OUT:
* @offset New offset value, to use to draw next rectangle
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
***************************************************************************
*/
void cpuappend(unsigned long long timetag, double *offset, double value, char **out,
int *outsize, unsigned long long dt, double *spmin, double *spmax)
{
/* Save min and max values */
if (value < *spmin) {
*spmin = value;
}
if (value > *spmax) {
*spmax = value;
}
/* Prepare additional graph definition data */
brappend(timetag, *offset, value, out, outsize, dt, FALSE);
*offset += value;
}
/*
***************************************************************************
* Update rectangular graph and min/max values.
*
* IN:
* @timetag Timestamp in seconds since the epoch for current sample
* stats. Will be used as X coordinate.
* @p_value Metric value for previous sample
* @value Metric value for current sample.
* @out Pointer on array of chars for current graph definition.
* @outsize Size of array of chars for current graph definition.
* @restart Set to TRUE if a RESTART record has been read since the last
* statistics sample.
* @dt Interval of time in seconds between current and previous
* sample.
* @spmin Min value already found for this metric.
* @spmax Max value already found for this metric.
*
* OUT:
* @out Pointer on array of chars for current graph definition that
* has been updated with the addition of current sample data.
* @outsize Array that containing the (possibly new) sizes of each
* element in array of chars.
* @spmin Min value for this metric.
* @spmax Max value for this metric.
***************************************************************************
*/
void recappend(unsigned long long timetag, double p_value, double value, char **out,
int *outsize, int restart, unsigned long long dt,
double *spmin, double *spmax)
{
char data[512], data1[128], data2[128];
unsigned long long t = 0;
/* Save min and max values */
if (value < *spmin) {
*spmin = value;
}
if (value > *spmax) {
*spmax = value;
}
if (dt < timetag) {
t = timetag -dt;
}
/* Prepare additional graph definition data */
if (restart) {
snprintf(data1, sizeof(data1), " M%llu,%.2f", t, p_value);
data1[sizeof(data1) - 1] = '\0';
}
if (p_value != value) {
snprintf(data2, sizeof(data2), " L%llu,%.2f", timetag, value);
data2[sizeof(data2) - 1] = '\0';
}
snprintf(data, sizeof(data), "%s L%llu,%.2f%s", restart ? data1 : "", timetag, p_value,
p_value != value ? data2 : "");
data[sizeof(data) - 1] = '\0';
save_svg_data(data, out, outsize);
}
/*
***************************************************************************
* Calculate 10 raised to the power of n.
*
* IN:
* @n Power number to use.
*
* RETURNS:
* 10 raised to the power of n.
***************************************************************************
*/
unsigned int pwr10(int n)
{
int i;
unsigned int e = 1;
for (i = 0; i < n; i++) {
e = e * 10;
}
return e;
}
/*
***************************************************************************
* Compute timestamp for next graduation on the X axis.
*
* IN:
* @stamp Record header with timestamp for current graduation.
* @xpos Number of seconds between two consecutive graduations.
*
* OUT:
* @stamp Record header with timestamp for next graduation that will
* be displayed on the X axis of the graph.
***************************************************************************
*/
void compute_next_graduation_timestamp(struct record_header *stamp, long int xpos)
{
stamp->ust_time += xpos;
if (PRINT_TRUE_TIME(flags)) {
unsigned int h = stamp->hour,
m = stamp->minute,
s = stamp->second;
/* Lines below useful only when option -t used */
s += xpos;
m += s / 60;
stamp->second = s % 60;
h += m / 60;
stamp->minute = m % 60;
stamp->hour = h % 24;
}
}
/*
***************************************************************************
* Autoscale graphs of a given view.
*
* IN:
* @asf_nr (Maximum) number of autoscale factors.
* @group Number of graphs in current view.
* @g_type Type of graph (SVG_LINE_GRAPH, SVG_BAR_GRAPH).
* @pos Position in array for the first graph in view.
* @gmax Global max value for all graphs in view.
* @spmax Array containing max values for graphs.
*
* OUT:
* @asfactor Autoscale factors (one for each graph).
***************************************************************************
*/
void gr_autoscaling(unsigned int asfactor[], int asf_nr, int group, enum svg_graph_type g_type,
int pos, double gmax, double *spmax)
{
int j;
for (j = 0; j < asf_nr; j++) {
/* Init autoscale factors */
asfactor[j] = 1;
}
if (AUTOSCALE_ON(flags) && (group > 1) && gmax && (g_type == SVG_LINE_GRAPH)) {
char val[32];
/* Autoscaling... */
for (j = 0; (j < group) && (j < asf_nr); j++) {
if (!*(spmax + pos + j) || (*(spmax + pos + j) == gmax))
continue;
snprintf(val, sizeof(val), "%u", (unsigned int) (gmax / *(spmax + pos + j)));
if (strlen(val) > 0) {
asfactor[j] = pwr10(strlen(val) - 1);
}
}
}
}
/*
***************************************************************************
* Display background grid (horizontal lines) and corresponding graduations.
*
* IN:
* @ypos Gap between two horizontal lines.
* @yfactor Scaling factor on Y axis.
* @lmax Max value for current view.
* @dp Number of decimal places for graduations.
***************************************************************************
*/
void display_hgrid(double ypos, double yfactor, double lmax, int dp)
{
int j = 0;
char stmp[32];
/* Print marker in debug mode */
if (DISPLAY_DEBUG_MODE(flags)) {
printf("<!-- Hgrid -->\n");
}
do {
/* Display horizontal lines (except on X axis) */
if (j > 0) {
printf("<polyline points=\"0,%.2f %d,%.2f\" style=\"vector-effect: non-scaling-stroke; "
"stroke: #%06x\" transform=\"scale(1,%f)\"/>\n",
ypos * j, SVG_G_XSIZE, ypos * j,
svg_colors[palette][SVG_COL_GRID_IDX],
yfactor);
}
/*
* Display graduations.
* Use same rounded value for graduation numbers as for grid lines
* to make sure they are properly aligned.
*/
sprintf(stmp, "%.2f", ypos * j);
printf("<text x=\"0\" y=\"%ld\" style=\"fill: #%06x; stroke: none; font-size: 12px; "
"text-anchor: end\">%.*f.</text>\n",
(long) (atof(stmp) * yfactor),
svg_colors[palette][SVG_COL_AXIS_IDX],
dp, ypos * j);
j++;
}
while ((ypos * j <= lmax) && (j < MAX_HLINES_NR));
}
/*
***************************************************************************
* Display background grid (vertical lines) and corresponding graduations.
*
* IN:
* @xpos Gap between two vertical lines.
* @xfactor Scaling factor on X axis.
* @v_gridnr Default number of vertical lines to display. The actual
* number may vary between this value and 2 times this value.
* @svg_p SVG specific parameters (see draw_activity_graphs() function).
***************************************************************************
*/
void display_vgrid(long int xpos, double xfactor, int v_gridnr, struct svg_parm *svg_p)
{
struct record_header stamp;
struct tstamp_ext rectime;
char cur_time[TIMESTAMP_LEN];
int j;
stamp.ust_time = svg_p->ust_time_ref;
/* Also set hour, minute and second in case TRUE_TIME (option -t) requested by user */
stamp.hour = svg_p->hour;
stamp.minute = svg_p->minute;
stamp.second = svg_p->second;
/* Print marker in debug mode */
if (DISPLAY_DEBUG_MODE(flags)) {
printf("<!-- Vgrid -->\n");
}
/*
* What really matters to know when we should stop drawing vertical lines
* is the time end. v_gridnr is only informative and used to calculate
* the gap between two lines.
*/
for (j = 0; (j <= (2 * v_gridnr)) && (stamp.ust_time <= svg_p->ust_time_end); j++) {
/* Display vertical lines */
if (sa_get_record_timestamp_struct(flags, &stamp, &rectime)) {
#ifdef DEBUG
fprintf(stderr, "%s: ust_time: %llu\n", __FUNCTION__, stamp.ust_time);
#endif
exit(1);
}
set_record_timestamp_string(flags, NULL, cur_time, TIMESTAMP_LEN, &rectime);
printf("<polyline points=\"%ld,0 %ld,%d\" style=\"vector-effect: non-scaling-stroke; "
"stroke: #%06x\" transform=\"scale(%f,1)\"/>\n",
xpos * j, xpos * j, -SVG_G_YSIZE,
svg_colors[palette][SVG_COL_GRID_IDX],
xfactor);
/*
* Display graduations.
* NB: We may have tm_min != 0 if we have more than 24H worth of data in one datafile.
* In this case, we should rather display the exact time instead of only the hour.
*/
if (DISPLAY_ONE_DAY(flags) && (rectime.tm_time.tm_min == 0)) {
printf("<text x=\"%ld\" y=\"15\" style=\"fill: #%06x; stroke: none; font-size: 14px; "
"text-anchor: start\">%2d:00</text>\n",
(long) (xpos * j * xfactor) - 15,
svg_colors[palette][SVG_COL_AXIS_IDX],
rectime.tm_time.tm_hour);
}
else {
printf("<text x=\"%ld\" y=\"10\" style=\"fill: #%06x; stroke: none; font-size: 12px; "
"text-anchor: start\" transform=\"rotate(45,%ld,0)\">%s</text>\n",
(long) (xpos * j * xfactor),
svg_colors[palette][SVG_COL_AXIS_IDX],
(long) (xpos * j * xfactor), cur_time);
}
/* Compute timestamp for next graduation */
compute_next_graduation_timestamp(&stamp, xpos);
}
printf("<text x=\"-10\" y=\"30\" style=\"fill: #%06x; stroke: none; font-size: 12px; "
"text-anchor: end\">%s</text>\n",
svg_colors[palette][SVG_COL_INFO_IDX],
PRINT_LOCAL_TIME(flags) ? svg_p->my_tzname
: (PRINT_TRUE_TIME(flags) ? svg_p->file_hdr->sa_tzname
: "UTC"));
}
/*
***************************************************************************
* Calculate the value on the Y axis between two horizontal lines that will
* make the graph background grid.
*
* IN:
* @lmax Max value reached for this graph.
*
* OUT:
* @dp Number of decimal places for Y graduations.
*
* RETURNS:
* Value between two horizontal lines.
***************************************************************************
*/
double ygrid(double lmax, int *dp)
{
char val[32];
int l;
unsigned int e;
long n = 0;
*dp = 0;
if (lmax == 0) {
lmax = 1;
}
n = (long) (lmax / SVG_H_GRIDNR);
if (!n) {
*dp = 2;
return (lmax / SVG_H_GRIDNR);
}
snprintf(val, sizeof(val), "%ld", n);
val[sizeof(val) - 1] = '\0';
l = strlen(val);
if (l < 2)
return n;
e = pwr10(l - 1);
return ((double) (((long) (n / e)) * e));
}
/*
***************************************************************************
* Calculate the value on the X axis between two vertical lines that will
* make the graph background grid.
*
* IN:
* @timestart First data timestamp (X coordinate of the first data point).
* @timeend Last data timestamp (X coordinate of the last data point).
* @v_gridnr Number of vertical lines to display. Its value is normally
* SVG_V_GRIDNR, except when option "oneday" is used, in which
* case it is set to 12.
*
* RETURNS:
* Value between two vertical lines.
***************************************************************************
*/
long int xgrid(unsigned long timestart, unsigned long timeend, int v_gridnr)
{
if ((timeend - timestart) <= v_gridnr)
return 1;
else
return ((timeend - timestart) / v_gridnr);
}
/*
***************************************************************************
* Free global graphs structures.
*
* IN:
* @out Pointer on array of chars for each graph definition.
* @outsize Size of array of chars for each graph definition.
***************************************************************************
*/
void free_graphs(char **out, int *outsize)
{
if (out) {
free(out);
}
if (outsize) {
free(outsize);
}
}
/*
***************************************************************************
* Skip current view where all graphs have only zero values. This function
* is called when option "skipempty" has been used, or when "No data" have
* been found for current view.
*
* IN:
* @out Pointer on array of chars for each graph definition.
* @pos Position of current view in the array of graphs definitions.
* @group Number of graphs in current view.
*
* OUT:
* @pos Position of next view in the array of graphs definitions.
***************************************************************************
*/
void skip_current_view(char **out, int *pos, int group)
{
int j;
char *out_p;
for (j = 0; j < group; j++) {
out_p = *(out + *pos + j);
if (out_p) {
/* Even if not displayed, current graph data have to be freed */
free(out_p);
}
}
*pos += group;
}
/*
* **************************************************************************
* Display all graphs for current activity.
*
* IN:
* @g_nr Number of views to display.
* @g_type Type of graph (SVG_LINE_GRAPH, SVG_BAR_GRAPH) for each view.
* @title Titles for each set of graphs.
* @g_title Titles for each graph.
* @item_name Item (network interface, etc.) name.
* @group Indicate how graphs are grouped together to make sets.
* @spmin Array containing min values for graphs.
* @spmax Array containing max values for graphs.
* @out Pointer on array of chars for each graph definition.
* @outsize Size of array of chars for each graph definition.
* @svg_p SVG specific parameters: Current views row number (.@graph_no),
* time for the first sample of stats (.@ust_time_first), and
* times used as start and end values on the X axis
* (.@ust_time_ref and .@ust_time_end).
* @record_hdr Pointer on record header of current stats sample.
* @skip_void Set to <> 0 if graphs with no data should be skipped.
* This is typicallly used to not display CPU offline on the
* whole period.
* @a Current activity structure.
* @xid Current activity extra id number.
*
* RETURNS:
* TRUE if at least one graph has been displayed.
***************************************************************************
*/
int draw_activity_graphs(int g_nr, int g_type[], char *title[], char *g_title[], char *item_name,
int group[], double *spmin, double *spmax, char **out, int *outsize,
struct svg_parm *svg_p, struct record_header *record_hdr, int skip_void,
struct activity *a, unsigned int xid)
{
char *out_p;
int i, j, dp, pos = 0, views_nr = 0, displayed = FALSE, palpos;
int v_gridnr, xv, yv;
unsigned int asfactor[16];
long int xpos;
double lmax, xfactor, yfactor, ypos, gmin, gmax;
char val[32], cur_date[TIMESTAMP_LEN];
struct tm rectime;
time_t t = svg_p->file_hdr->sa_ust_time;
/* Print activity name in debug mode */
if (DISPLAY_DEBUG_MODE(flags) && !svg_p->mock) {
printf("<!-- Name: %s -->\n", a->name);
}
/* For each view which is part of current activity */
for (i = 0; i < g_nr; i++) {
/* Print view number in debug mode */
if (DISPLAY_DEBUG_MODE(flags) && !svg_p->mock) {
printf("<!-- View %d -->\n", i + 1);
}
/* Get global min and max value for current view */
get_global_extrema(pos, group[i], spmin, spmax, &gmin, &gmax);
/* Don't display empty views if requested */
if (SKIP_EMPTY_VIEWS(flags) && (gmax < 0.005)) {
/* Free graph data and update @pos to go to next view */
skip_current_view(out, &pos, group[i]);
continue;
}
/*
* Skip void graphs.
* At present time, this is only used by A_CPU and A_NET_SOFT activities to not
* display CPU which are offline on the whole period. We assume that the first
* metric in view is enough to determine if the whole view has to be skipped.
*/
if (skip_void && ((*(spmin + pos) == DBL_MAX) || (*(spmax + pos) == -DBL_MAX))) {
pos += group[i]; /* Maybe one day, A_CPU will have several views */
continue;
}
if (!displayed && !svg_p->mock) {
/* Translate to proper position for current activity */
printf("<g id=\"g%u-%u\" transform=\"translate(0,%d)\">\n",
a->id, xid,
SVG_H_YSIZE + SVG_C_YSIZE * (DISPLAY_TOC(flags)
? svg_p->nr_act_dispd : 0) + SVG_T_YSIZE * svg_p->graph_no);
}
/*
* Set @displayed to TRUE even in MOCK mode.
* Means that a view would have actually been displayed.
* @displayed will be set to 0 before leaving current function in
* MOCK mode.
*/
displayed = TRUE;
/* Increment number of views actually displayed */
views_nr++;
if (svg_p->mock) {
/* Stop now in MOCK mode: Don't print anything onto the screen */
pos += group[i];
continue;
}
/* Compute top left position of view */
if (PACK_VIEWS(flags)) {
xv = (views_nr - 1) * SVG_T_XSIZE;
yv = 0;
}
else {
xv = 0;
yv = (views_nr - 1) * SVG_T_YSIZE;
}
/* Used as index in color palette */
palpos = (palette == SVG_BW_COL_PALETTE ? 0 : pos);
/* Graph background */
printf("<rect x=\"%d\" y=\"%d\" height=\"%d\" width=\"%d\" fill=\"#%06x\"/>\n",
xv, yv, SVG_V_YSIZE, SVG_V_XSIZE,
svg_colors[palette][SVG_COL_BCKGRD_IDX]);
/* Graph title */
printf("<text x=\"%d\" y=\"%d\" style=\"fill: #%06x; stroke: none\">%s",
xv, 20 + yv,
svg_colors[palette][SVG_COL_TITLE_IDX],
title[i]);
if (item_name) {
printf(" [%s]", item_name);
}
printf("\n");
printf("<tspan x=\"%d\" y=\"%d\" style=\"fill: #%06x; stroke: none; font-size: 12px\">"
"(Min, Max values)</tspan>\n</text>\n",
xv + 5 + SVG_M_XSIZE + SVG_G_XSIZE, yv + 25,
svg_colors[palette][SVG_COL_INFO_IDX]);
/*
* At least two samples are needed.
* And a min and max value should have been found.
*/
if ((record_hdr->ust_time == svg_p->ust_time_first) ||
(*(spmin + pos) == DBL_MAX) || (*(spmax + pos) == -DBL_MAX)) {
/* No data found */
printf("<text x=\"%d\" y=\"%d\" style=\"fill: #%06x; stroke: none\">No data</text>\n",
xv, yv + SVG_M_YSIZE,
svg_colors[palette][SVG_COL_ERROR_IDX]);
skip_current_view(out, &pos, group[i]);
continue;
}
/* X and Y axis */
printf("<polyline points=\"%d,%d %d,%d %d,%d\" style=\"fill: #%06x; stroke: #%06x; stroke-width: 2\"/>\n",
xv + SVG_M_XSIZE, yv + SVG_M_YSIZE,
xv + SVG_M_XSIZE, yv + SVG_M_YSIZE + SVG_G_YSIZE,
xv + SVG_M_XSIZE + SVG_G_XSIZE, yv + SVG_M_YSIZE + SVG_G_YSIZE,
svg_colors[palette][SVG_COL_BCKGRD_IDX],
svg_colors[palette][SVG_COL_AXIS_IDX]);
/* Autoscaling graphs if needed */
gr_autoscaling(asfactor, 16, group[i], g_type[i], pos, gmax, spmax);
/* Caption */
for (j = 0; j < group[i]; j++) {
/* Set dp to TRUE (1) if current metric is based on integer values */
dp = (g_title[pos + j][0] == '~');
snprintf(val, sizeof(val), "x%u ", asfactor[j]);
printf("<text x=\"%d\" y=\"%d\" style=\"fill: #%06x; stroke: none; font-size: 12px\">"
"%s %s(%.*f, %.*f)</text>\n",
xv + 5 + SVG_M_XSIZE + SVG_G_XSIZE, yv + SVG_M_YSIZE + j * 15,
svg_colors[palette][(palpos + j) & SVG_COLORS_IDX_MASK], g_title[pos + j] + dp,
asfactor[j] == 1 ? "" : val,
!dp * 2, *(spmin + pos + j) * asfactor[j],
!dp * 2, *(spmax + pos + j) * asfactor[j]);
}
if (DISPLAY_INFO(flags)) {
/* Display additional info (hostname, date) */
printf("<text x=\"%d\" y=\"%d\" "
"style=\"fill: #%06x; text-anchor: end; stroke: none; font-size: 14px\">"
"%s\n",
xv + SVG_V_XSIZE - 5, yv + SVG_M_YSIZE + SVG_G_YSIZE,
svg_colors[palette][SVG_COL_INFO_IDX],
svg_p->file_hdr->sa_nodename);
/* Get report date */
set_report_date(localtime_r(&t, &rectime),
cur_date, sizeof(cur_date));
printf("<tspan x=\"%d\" y=\"%d\" "
"style=\"fill: #%06x; text-anchor: end; stroke: none; font-size: 14px\">"
"%s</tspan>\n</text>\n",
xv + SVG_V_XSIZE - 5, yv + SVG_M_YSIZE + SVG_G_YSIZE + 14,
svg_colors[palette][SVG_COL_INFO_IDX],
cur_date);
}
/* Translate to proper position for current graph within current activity */
printf("<g transform=\"translate(%d,%d)\">\n",
xv + SVG_M_XSIZE, yv + SVG_M_YSIZE + SVG_G_YSIZE);
/* Grid */
if (g_type[i] == SVG_LINE_GRAPH) {
/* For line graphs */
if (!gmax) {
/* If all values are zero then set current max value to 1 */
lmax = 1.0;
}
else {
lmax = gmax;
}
/* Max value cannot be too small, else Y graduations will be meaningless */
if (lmax < SVG_H_GRIDNR * 0.01) {
lmax = SVG_H_GRIDNR * 0.01;
}
ypos = ygrid(lmax, &dp);
}
else {
/* For bar graphs (used for %values) */
ypos = 25.0; /* Draw lines at 25%, 50%, 75% and 100% */
dp = 0; /* No decimals */
/* Max should be always 100% except for percentage values greater than 100% */
if (gmax > 100.0) {
lmax = gmax;
}
else {
lmax = 100.0;
}
}
yfactor = (double) -SVG_G_YSIZE / lmax;
/* Display horizontal lines and graduations */
display_hgrid(ypos, yfactor, lmax, dp);
/* Set number of vertical lines to 12 when option "oneday" is used */
v_gridnr = DISPLAY_ONE_DAY(flags) ? 12 : SVG_V_GRIDNR;
xpos = xgrid(svg_p->ust_time_ref, svg_p->ust_time_end, v_gridnr);
xfactor = (double) SVG_G_XSIZE / (svg_p->ust_time_end - svg_p->ust_time_ref);
/* Display vertical lines and graduations */
display_vgrid(xpos, xfactor, v_gridnr, svg_p);
/* Print marker in debug mode */