/*
***************************************************************************
* Read the various statistics sent by the data collector (sadc).
*
* IN:
* @curr Index in array for current sample statistics.
***************************************************************************
*/
void read_sadc_stat_bunch(int curr)
{
int i, p;
/* Read record header (type is always R_STATS since it is read from sadc) */
if (sa_read(&record_hdr[curr], RECORD_HEADER_SIZE)) {
/*
* SIGINT (sent by sadc) is likely to be received
* while we are stuck in sa_read().
* If this happens then no data have to be read.
*/
if (sigint_caught)
return;
print_read_error();
}
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (sa_read(act[p]->buf[curr], act[p]->fsize * act[p]->nr * act[p]->nr2)) {
print_read_error();
}
}
}
/*
***************************************************************************
* Check system activity datafile contents before displaying stats.
* Display file header if option -H has been entered, else call function
* corresponding to selected output format.
*
* IN:
* @dfile System activity data file name.
***************************************************************************
*/
void read_stats_from_file(char dfile[])
{
struct file_magic file_magic;
struct file_activity *file_actlst = NULL;
struct tm rectime, loctime;
int ifd, ignore, tab = 0;
__nr_t cpu_nr;
/* Prepare file for reading and read its headers */
ignore = ACCEPT_BAD_FILE_FORMAT(fmt[f_position]->options);
check_file_actlst(&ifd, dfile, act, &file_magic, &file_hdr,
&file_actlst, id_seq, ignore);
/* Now pick up number of proc for this file */
cpu_nr = act[get_activity_position(act, A_CPU, EXIT_IF_NOT_FOUND)]->nr;
if (DISPLAY_HDR_ONLY(flags)) {
if (*fmt[f_position]->f_header) {
/* Display only data file header then exit */
(*fmt[f_position]->f_header)(&tab, F_BEGIN + F_END, dfile, &file_magic,
&file_hdr, cpu_nr, act, id_seq);
}
exit(0);
}
/* Perform required allocations */
allocate_structures(act);
/* Call function corresponding to selected output format */
if (format == F_SVG_OUTPUT) {
logic3_display_loop(ifd, file_actlst, cpu_nr,
&rectime, &loctime, dfile, &file_magic);
}
else if (DISPLAY_GROUPED_STATS(fmt[f_position]->options)) {
logic2_display_loop(ifd, file_actlst, cpu_nr,
&rectime, &loctime, dfile, &file_magic);
}
else {
logic1_display_loop(ifd, file_actlst, dfile,
&file_magic, cpu_nr, &rectime, &loctime);
}
close(ifd);
free(file_actlst);
free_structures(act);
}
/*
***************************************************************************
* Display data file header.
*
* IN:
* @tab Number of tabulations (unused here).
* @action Action expected from current function.
* @dfile Name of system activity data file.
* @file_magic System activity file magic header.
* @file_hdr System activity file standard header.
* @cpu_nr Number of processors for current daily data file.
* @act Array of activities.
* @id_seq Activity sequence.
***************************************************************************
*/
__printf_funct_t print_hdr_header(int *tab, int action, char *dfile,
struct file_magic *file_magic,
struct file_header *file_hdr, __nr_t cpu_nr,
struct activity *act[], unsigned int id_seq[])
{
int i, p;
/* Actions F_BEGIN and F_END ignored */
if (action & F_BEGIN) {
printf(_("System activity data file: %s (%#x)\n"),
dfile, file_magic->format_magic);
display_sa_file_version(stdout, file_magic);
if (file_magic->format_magic != FORMAT_MAGIC) {
return;
}
printf(_("Host: "));
print_gal_header(localtime((const time_t *) &(file_hdr->sa_ust_time)),
file_hdr->sa_sysname, file_hdr->sa_release,
file_hdr->sa_nodename, file_hdr->sa_machine,
cpu_nr > 1 ? cpu_nr - 1 : 1);
printf(_("Size of a long int: %d\n"), file_hdr->sa_sizeof_long);
printf(_("List of activities:\n"));
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
if ((p = get_activity_position(act, id_seq[i])) < 0) {
PANIC(id_seq[i]);
}
printf("%02d: %s\t(x%d)", act[p]->id, act[p]->name, act[p]->nr);
if (act[p]->f_count2 || (act[p]->nr2 > 1)) {
printf("\t(x%d)", act[p]->nr2);
}
if (act[p]->magic == ACTIVITY_MAGIC_UNKNOWN) {
printf(_("\t[Unknown activity format]"));
}
printf("\n");
}
}
}
/*
***************************************************************************
* Print statistics average.
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @act_id Activity that can be displayed, or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
***************************************************************************
*/
void write_stats_avg(int curr, int read_from_file, unsigned int act_id)
{
int i;
unsigned long long itv, g_itv;
static __nr_t cpu_nr = -1;
if (cpu_nr < 0)
cpu_nr = act[get_activity_position(act, A_CPU)]->nr;
/* Interval value in jiffies */
g_itv = get_interval(record_hdr[2].uptime, record_hdr[curr].uptime);
if (cpu_nr > 1)
itv = get_interval(record_hdr[2].uptime0, record_hdr[curr].uptime0);
else
itv = g_itv;
strncpy(timestamp[curr], _("Average:"), TIMESTAMP_LEN);
timestamp[curr][TIMESTAMP_LEN - 1] = '\0';
strcpy(timestamp[!curr], timestamp[curr]);
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr > 0)) {
/* Display current average activity statistics */
(*act[i]->f_print_avg)(act[i], 2, curr,
NEED_GLOBAL_ITV(act[i]->options) ? g_itv : itv);
}
}
if (read_from_file) {
/*
* Reset number of lines printed only if we read stats
* from a system activity file.
*/
avg_count = 0;
}
}
/*
***************************************************************************
* Print statistics average
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @act_id Activity that can be displayed, or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
***************************************************************************
*/
void write_stats_avg(int curr, int read_from_file, unsigned int act_id)
{
int i;
unsigned long long itv, g_itv;
static __nr_t cpu_nr = -1;
if (cpu_nr < 0)
cpu_nr = act[get_activity_position(act, A_CPU)]->nr;
/* Interval value in jiffies */
g_itv = get_interval(record_hdr[2].uptime, record_hdr[curr].uptime);
if (cpu_nr > 1)
itv = get_interval(record_hdr[2].uptime0, record_hdr[curr].uptime0);
else
itv = g_itv;
strcpy(timestamp[curr], _("Average:"));
strcpy(timestamp[!curr], timestamp[curr]);
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr > 0)) {
/* Display current average activity statistics */
if (NEEDS_GLOBAL_ITV(act[i]->options))
(*act[i]->f_print_avg)(act[i], 2, curr, g_itv);
else
(*act[i]->f_print_avg)(act[i], 2, curr, itv);
}
}
if (read_from_file) {
/* Reset counters only if we read stats from a system activity file */
memset(&asum, 0, STATS_SUM_SIZE);
}
}
/*
***************************************************************************
* Read the various statistics sent by the data collector (sadc).
*
* IN:
* @curr Index in array for current sample statistics.
***************************************************************************
*/
void read_sadc_stat_bunch(int curr)
{
int i, p;
/* Read record header (type is always R_STATS since it is read from sadc) */
if (sa_read(&record_hdr[curr], RECORD_HEADER_SIZE)) {
print_read_error();
}
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (sa_read(act[p]->buf[curr], act[p]->fsize * act[p]->nr * act[p]->nr2)) {
print_read_error();
}
}
}
/*
***************************************************************************
* Display file contents in selected format (logic #3).
* Logic #3: Special logic for SVG output format.
* Formats: SVG
*
* IN:
* @ifd File descriptor of input file.
* @file_actlst List of (known or unknown) activities in file.
* @cpu_nr Number of processors for current activity data file.
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether options -T/-t have been used or not) can
* be saved for current record.
* @loctime Structure where timestamp (expressed in local time) can be
* saved for current record.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header data.
***************************************************************************
*/
void logic3_display_loop(int ifd, struct file_activity *file_actlst, __nr_t cpu_nr,
struct tm *rectime, struct tm *loctime, char *file,
struct file_magic *file_magic)
{
int i, p;
int curr = 1, rtype, g_nr = 0;
int eosaf = TRUE, reset = TRUE;
long cnt = 1;
off_t fpos;
int graph_nr = 0;
__nr_t save_act_nr[NR_ACT] = {0};
/* Use a decimal point to make SVG code locale independent */
setlocale(LC_NUMERIC, "C");
/* Calculate the number of graphs to display */
graph_nr = get_svg_graph_nr(ifd, file, file_magic,
file_actlst, rectime, loctime);
if (!graph_nr)
/* No graph to display */
return;
/* Print SVG header */
if (*fmt[f_position]->f_header) {
(*fmt[f_position]->f_header)(&graph_nr, F_BEGIN + F_MAIN, file, file_magic,
&file_hdr, cpu_nr, act, id_seq);
}
/*
* If this record is a special (RESTART or COMMENT) one, ignore it and
* (try to) get another one.
*/
do {
if (read_next_sample(ifd, IGNORE_RESTART | IGNORE_COMMENT, 0,
file, &rtype, 0, file_magic, file_actlst,
rectime, loctime))
/* End of sa data file */
return;
}
while ((rtype == R_RESTART) || (rtype == R_COMMENT) ||
(tm_start.use && (datecmp(loctime, &tm_start) < 0)) ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)));
/* Save the first stats collected. Used for example in next_slice() function */
copy_structures(act, id_seq, record_hdr, 2, 0);
/* Save current file position */
if ((fpos = lseek(ifd, 0, SEEK_CUR)) < 0) {
perror("lseek");
exit(2);
}
/* Save number of activities items for current file position */
sr_act_nr(save_act_nr, DO_SAVE);
/* For each requested activity, display graphs */
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (!IS_SELECTED(act[p]->options) || !act[p]->g_nr)
continue;
if (!HAS_MULTIPLE_OUTPUTS(act[p]->options)) {
display_curr_act_graphs(ifd, fpos, &curr, &cnt, &eosaf,
p, &reset, file_actlst,
cpu_nr, rectime, loctime, file,
file_magic, save_act_nr, &g_nr);
}
else {
unsigned int optf, msk;
optf = act[p]->opt_flags;
for (msk = 1; msk < 0x100; msk <<= 1) {
if ((act[p]->opt_flags & 0xff) & msk) {
act[p]->opt_flags &= (0xffffff00 + msk);
display_curr_act_graphs(ifd, fpos, &curr, &cnt, &eosaf,
p, &reset, file_actlst,
cpu_nr, rectime, loctime, file,
file_magic, save_act_nr, &g_nr);
act[p]->opt_flags = optf;
}
}
}
}
/* Print SVG trailer */
if (*fmt[f_position]->f_header) {
(*fmt[f_position]->f_header)(&graph_nr, F_END, file, file_magic,
&file_hdr, cpu_nr, act, id_seq);
}
}
/*
***************************************************************************
* Display data file header.
*
* IN:
* @parm Specific parameter (unused here).
* @action Action expected from current function.
* @dfile Name of system activity data file.
* @file_magic System activity file magic header.
* @file_hdr System activity file standard header.
* @cpu_nr Number of processors for current daily data file.
* @act Array of activities.
* @id_seq Activity sequence.
***************************************************************************
*/
__printf_funct_t print_hdr_header(void *parm, int action, char *dfile,
struct file_magic *file_magic,
struct file_header *file_hdr, __nr_t cpu_nr,
struct activity *act[], unsigned int id_seq[])
{
int i, p;
struct tm rectime, *loc_t;
char cur_time[TIMESTAMP_LEN];
/* Actions F_MAIN and F_END ignored */
if (action & F_BEGIN) {
printf(_("System activity data file: %s (%#x)\n"),
dfile, file_magic->format_magic);
display_sa_file_version(stdout, file_magic);
if (file_magic->format_magic != FORMAT_MAGIC) {
return;
}
printf(_("Genuine sa datafile: %s (%x)\n"),
file_magic->upgraded ? _("no") : _("yes"),
file_magic->upgraded);
printf(_("Host: "));
print_gal_header(localtime((const time_t *) &(file_hdr->sa_ust_time)),
file_hdr->sa_sysname, file_hdr->sa_release,
file_hdr->sa_nodename, file_hdr->sa_machine,
cpu_nr > 1 ? cpu_nr - 1 : 1,
PLAIN_OUTPUT);
printf(_("Number of CPU for last samples in file: %u\n"),
file_hdr->sa_last_cpu_nr > 1 ? file_hdr->sa_last_cpu_nr - 1 : 1);
/* Fill file timestmap structure (rectime) */
get_file_timestamp_struct(flags, &rectime, file_hdr);
strftime(cur_time, sizeof(cur_time), "%Y-%m-%d", &rectime);
printf(_("File date: %s\n"), cur_time);
if ((loc_t = gmtime((const time_t *) &file_hdr->sa_ust_time)) != NULL) {
printf(_("File time: "));
strftime(cur_time, sizeof(cur_time), "%T", loc_t);
printf("%s UTC\n", cur_time);
}
printf(_("Size of a long int: %d\n"), file_hdr->sa_sizeof_long);
/* Number of activities (number of volatile activities) in file */
printf("sa_act_nr (sa_vol_act_nr): %u (%u)\n",
file_hdr->sa_act_nr, file_hdr->sa_vol_act_nr);
printf(_("List of activities:\n"));
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
printf("%02d: %s\t(x%d)", act[p]->id, act[p]->name, act[p]->nr);
if (act[p]->f_count2 || (act[p]->nr2 > 1)) {
printf("\t(x%d)", act[p]->nr2);
}
if (act[p]->magic == ACTIVITY_MAGIC_UNKNOWN) {
printf(_("\t[Unknown activity format]"));
}
printf("\n");
}
}
}
/*
***************************************************************************
* Read header data sent by sadc.
***************************************************************************
*/
void read_header_data(void)
{
struct file_magic file_magic;
struct file_activity file_act;
int rc, i, p;
char version[16];
/* Read magic header */
rc = sa_read(&file_magic, FILE_MAGIC_SIZE);
sprintf(version, "%d.%d.%d.%d",
file_magic.sysstat_version,
file_magic.sysstat_patchlevel,
file_magic.sysstat_sublevel,
file_magic.sysstat_extraversion);
if (!file_magic.sysstat_extraversion) {
version[strlen(version) - 2] = '\0';
}
if (rc || (file_magic.sysstat_magic != SYSSTAT_MAGIC) ||
(file_magic.format_magic != FORMAT_MAGIC) ||
strcmp(version, VERSION)) {
/* sar and sadc commands are not consistent */
fprintf(stderr, _("Invalid data format\n"));
if (!rc && (file_magic.sysstat_magic == SYSSTAT_MAGIC)) {
fprintf(stderr,
_("Using a wrong data collector from a different sysstat version\n"));
}
exit(3);
}
/*
* Read header data.
* No need to take into account file_magic.header_size. We are sure that
* sadc and sar are from the same version (we have checked FORMAT_MAGIC
* but also VERSION above) and thus the size of file_header is FILE_HEADER_SIZE.
*/
if (sa_read(&file_hdr, FILE_HEADER_SIZE)) {
print_read_error();
}
/* Read activity list */
for (i = 0; i < file_hdr.sa_act_nr; i++) {
if (sa_read(&file_act, FILE_ACTIVITY_SIZE)) {
print_read_error();
}
p = get_activity_position(act, file_act.id);
if ((p < 0) || (act[p]->fsize != file_act.size)
|| !file_act.nr
|| !file_act.nr2
|| (act[p]->magic != file_act.magic)) {
/* Remember that we are reading data from sadc and not from a file... */
fprintf(stderr, _("Inconsistent input data\n"));
exit(3);
}
id_seq[i] = file_act.id; /* We necessarily have "i < NR_ACT" */
act[p]->nr = file_act.nr;
act[p]->nr2 = file_act.nr2;
}
while (i < NR_ACT) {
id_seq[i++] = 0;
}
/* Check that all selected activties are actually sent by sadc */
reverse_check_act(file_hdr.sa_act_nr);
}
/*
***************************************************************************
* Read statistics from a system activity data file.
*
* IN:
* @from_file Input file name.
***************************************************************************
*/
void read_stats_from_file(char from_file[])
{
struct file_magic file_magic;
struct file_activity *file_actlst = NULL;
int curr = 1, i, p;
int ifd, rtype;
int rows, eosaf = TRUE, reset = FALSE;
long cnt = 1;
off_t fpos;
/* Get window size */
rows = get_win_height();
/* Read file headers and activity list */
check_file_actlst(&ifd, from_file, act, &file_magic, &file_hdr,
&file_actlst, id_seq, FALSE);
/* Perform required allocations */
allocate_structures(act);
/* Print report header */
print_report_hdr(flags, &rectime, &file_hdr,
act[get_activity_position(act, A_CPU)]->nr);
/* Read system statistics from file */
do {
/*
* If this record is a special (RESTART or COMMENT) one, print it and
* (try to) get another one.
*/
do {
if (sa_fread(ifd, &record_hdr[0], RECORD_HEADER_SIZE, SOFT_SIZE))
/* End of sa data file */
return;
rtype = record_hdr[0].record_type;
if ((rtype == R_RESTART) || (rtype == R_COMMENT)) {
sar_print_special(0, tm_start.use, tm_end.use, rtype,
ifd, from_file, &file_magic);
}
else {
/*
* OK: Previous record was not a special one.
* So read now the extra fields.
*/
read_file_stat_bunch(act, 0, ifd, file_hdr.sa_act_nr,
file_actlst);
if (sar_get_record_timestamp_struct(0))
/*
* An error was detected.
* The timestamp hasn't been updated.
*/
continue;
}
}
while ((rtype == R_RESTART) || (rtype == R_COMMENT) ||
(tm_start.use && (datecmp(&rectime, &tm_start) < 0)) ||
(tm_end.use && (datecmp(&rectime, &tm_end) >=0)));
/* Save the first stats collected. Will be used to compute the average */
copy_structures(act, id_seq, record_hdr, 2, 0);
reset = TRUE; /* Set flag to reset last_uptime variable */
/* Save current file position */
if ((fpos = lseek(ifd, 0, SEEK_CUR)) < 0) {
perror("lseek");
exit(2);
}
/*
* Read and write stats located between two possible Linux restarts.
* Activities that should be displayed are saved in id_seq[] array.
*/
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
if ((p = get_activity_position(act, id_seq[i])) < 0) {
/* Should never happen */
PANIC(1);
}
if (!IS_SELECTED(act[p]->options))
continue;
if (!HAS_MULTIPLE_OUTPUTS(act[p]->options)) {
handle_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf, rows,
act[p]->id, &reset, file_actlst,
from_file, &file_magic);
}
else {
unsigned int optf, msk;
optf = act[p]->opt_flags;
for (msk = 1; msk < 0x10; msk <<= 1) {
if (act[p]->opt_flags & msk) {
act[p]->opt_flags &= msk;
handle_curr_act_stats(ifd, fpos, &curr, &cnt,
&eosaf, rows, act[p]->id,
&reset, file_actlst,
from_file, &file_magic);
act[p]->opt_flags = optf;
}
}
}
}
if (!cnt) {
/* Go to next Linux restart, if possible */
do {
eosaf = sa_fread(ifd, &record_hdr[curr], RECORD_HEADER_SIZE,
SOFT_SIZE);
rtype = record_hdr[curr].record_type;
if (!eosaf && (rtype != R_RESTART) && (rtype != R_COMMENT)) {
read_file_stat_bunch(act, curr, ifd, file_hdr.sa_act_nr,
file_actlst);
}
else if (!eosaf && (rtype == R_COMMENT)) {
/* This was a COMMENT record: print it */
sar_print_special(curr, tm_start.use, tm_end.use, R_COMMENT,
ifd, from_file, &file_magic);
}
}
while (!eosaf && (rtype != R_RESTART));
}
/* The last record we read was a RESTART one: Print it */
if (!eosaf && (record_hdr[curr].record_type == R_RESTART)) {
sar_print_special(curr, tm_start.use, tm_end.use, R_RESTART,
ifd, from_file, &file_magic);
}
}
while (!eosaf);
close(ifd);
free(file_actlst);
}
/*
***************************************************************************
* Print system statistics.
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @use_tm_start Set to TRUE if option -s has been used.
* @use_tm_end Set to TRUE if option -e has been used.
* @reset Set to TRUE if last_uptime variable should be
* reinitialized (used in next_slice() function).
* @act_id Activity that can be displayed or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
*
* OUT:
* @cnt Number of remaining lines to display.
*
* RETURNS:
* 1 if stats have been successfully displayed, and 0 otherwise.
***************************************************************************
*/
int write_stats(int curr, int read_from_file, long *cnt, int use_tm_start,
int use_tm_end, int reset, unsigned int act_id)
{
int i;
unsigned long long itv, g_itv;
static int cross_day = 0;
static __nr_t cpu_nr = -1;
if (cpu_nr < 0)
cpu_nr = act[get_activity_position(act, A_CPU)]->nr;
/* Check time (1) */
if (read_from_file) {
if (!next_slice(record_hdr[2].uptime0, record_hdr[curr].uptime0,
reset, interval))
/* Not close enough to desired interval */
return 0;
}
/* Set previous timestamp */
if (set_record_timestamp_string(!curr, timestamp[!curr], 16))
return 0;
/* Set current timestamp */
if (set_record_timestamp_string(curr, timestamp[curr], 16))
return 0;
/* Check if we are beginning a new day */
if (use_tm_start && record_hdr[!curr].ust_time &&
(record_hdr[curr].ust_time > record_hdr[!curr].ust_time) &&
(record_hdr[curr].hour < record_hdr[!curr].hour)) {
cross_day = 1;
}
if (cross_day) {
/*
* This is necessary if we want to properly handle something like:
* sar -s time_start -e time_end with
* time_start(day D) > time_end(day D+1)
*/
rectime.tm_hour +=24;
}
/* Check time (2) */
if (use_tm_start && (datecmp(&rectime, &tm_start) < 0))
/* it's too soon... */
return 0;
/* Get interval values */
get_itv_value(&record_hdr[curr], &record_hdr[!curr],
cpu_nr, &itv, &g_itv);
/* Check time (3) */
if (use_tm_end && (datecmp(&rectime, &tm_end) > 0)) {
/* It's too late... */
*cnt = 0;
return 0;
}
avg_count++;
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr > 0)) {
/* Display current activity statistics */
(*act[i]->f_print)(act[i], !curr, curr,
NEED_GLOBAL_ITV(act[i]->options) ? g_itv : itv);
}
}
return 1;
}
/*
***************************************************************************
* Read stats for current activity from file and display them.
*
* IN:
* @ifd Input file descriptor.
* @fpos Position in file where reading must start.
* @curr Index in array for current sample statistics.
* @rows Number of rows of screen.
* @act_id Activity to display.
* @file_actlst List of activities in file.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header data.
*
* OUT:
* @curr Index in array for next sample statistics.
* @cnt Number of remaining lines of stats to write.
* @eosaf Set to TRUE if EOF (end of file) has been reached.
* @reset Set to TRUE if last_uptime variable should be
* reinitialized (used in next_slice() function).
***************************************************************************
*/
void handle_curr_act_stats(int ifd, off_t fpos, int *curr, long *cnt, int *eosaf,
int rows, unsigned int act_id, int *reset,
struct file_activity *file_actlst, char *file,
struct file_magic *file_magic)
{
int p;
unsigned long lines = 0;
unsigned char rtype;
int davg = 0, next, inc = -2;
if (lseek(ifd, fpos, SEEK_SET) < fpos) {
perror("lseek");
exit(2);
}
/*
* Restore the first stats collected.
* Used to compute the rate displayed on the first line.
*/
copy_structures(act, id_seq, record_hdr, !*curr, 2);
*cnt = count;
/* Assess number of lines printed */
if ((p = get_activity_position(act, act_id)) >= 0) {
if (act[p]->bitmap) {
inc = count_bits(act[p]->bitmap->b_array,
BITMAP_SIZE(act[p]->bitmap->b_size));
}
else {
inc = act[p]->nr;
}
}
if (inc < 0) {
/* Should never happen */
PANIC(inc);
}
do {
/* Display count lines of stats */
*eosaf = sa_fread(ifd, &record_hdr[*curr],
RECORD_HEADER_SIZE, SOFT_SIZE);
rtype = record_hdr[*curr].record_type;
if (!*eosaf && (rtype != R_RESTART) && (rtype != R_COMMENT)) {
/* Read the extra fields since it's not a special record */
read_file_stat_bunch(act, *curr, ifd, file_hdr.sa_act_nr, file_actlst);
}
if ((lines >= rows) || !lines) {
lines = 0;
dis = 1;
}
else
dis = 0;
if (!*eosaf && (rtype != R_RESTART)) {
if (rtype == R_COMMENT) {
/* Display comment */
next = sar_print_special(*curr, tm_start.use, tm_end.use,
R_COMMENT, ifd, file, file_magic);
if (next) {
/* A line of comment was actually displayed */
lines++;
}
continue;
}
/* next is set to 1 when we were close enough to desired interval */
next = write_stats(*curr, USE_SA_FILE, cnt, tm_start.use, tm_end.use,
*reset, act_id);
if (next && (*cnt > 0)) {
(*cnt)--;
}
if (next) {
davg++;
*curr ^=1;
lines += inc;
}
*reset = FALSE;
}
}
while (*cnt && !*eosaf && (rtype != R_RESTART));
if (davg) {
write_stats_avg(!*curr, USE_SA_FILE, act_id);
}
*reset = TRUE;
}
/*
***************************************************************************
* Compute the number of SVG graphs to display. Each activity selected may
* have several graphs. Moreover we have to take into account volatile
* activities (eg. CPU) for which the number of graphs will depend on the
* highest number of items (eg. maximum number of CPU) saved in the file.
* This number may be higher than the real number of graphs that will be
* displayed since some items have a preallocation constant.
*
* IN:
* @ifd File descriptor of input file.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header data.
* @file_actlst List of (known or unknown) activities in file.
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether options -T/-t have been used or not) can
* be saved for current record.
* @loctime Structure where timestamp (expressed in local time) can be
* saved for current record.
*
* RETURNS:
* Total number of graphs to display, taking into account only activities
* to be displayed, and selected period of time (options -s/-e).
***************************************************************************
*/
int get_svg_graph_nr(int ifd, char *file, struct file_magic *file_magic,
struct file_activity *file_actlst, struct tm *rectime,
struct tm *loctime)
{
int i, n, p, eosaf;
int rtype, new_tot_g_nr, tot_g_nr = 0;
off_t fpos;
__nr_t save_act_nr[NR_ACT] = {0};
/* Save current file position and items number */
if ((fpos = lseek(ifd, 0, SEEK_CUR)) < 0) {
perror("lseek");
exit(2);
}
sr_act_nr(save_act_nr, DO_SAVE);
/* Init total number of graphs for each activity */
for (i = 0; i < NR_ACT; i++) {
id_g_nr[i] = 0;
}
/* Look for the first record that will be displayed */
do {
eosaf = read_next_sample(ifd, IGNORE_RESTART | IGNORE_COMMENT | SET_TIMESTAMPS,
0, file, &rtype, 0, file_magic, file_actlst,
rectime, loctime);
if (eosaf)
/* No record to display => no graph too */
return 0;
}
while ((tm_start.use && (datecmp(loctime, &tm_start) < 0)) ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)));
do {
new_tot_g_nr = 0;
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (!IS_SELECTED(act[p]->options))
continue;
if (ONE_GRAPH_PER_ITEM(act[p]->options)) {
n = act[p]->g_nr * act[p]->nr;
}
else {
n = act[p]->g_nr;
}
if (n > id_g_nr[i]) {
id_g_nr[i] = n;
}
new_tot_g_nr += n;
}
if (new_tot_g_nr > tot_g_nr) {
tot_g_nr = new_tot_g_nr;
}
do {
eosaf = read_next_sample(ifd, IGNORE_RESTART | IGNORE_COMMENT | SET_TIMESTAMPS,
0, file, &rtype, 0, file_magic, file_actlst,
rectime, loctime);
if (eosaf ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)))
/* End of data file or end time exceeded */
break;
}
while (rtype != R_RESTART);
if (eosaf ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)))
/*
* End of file, or end time exceeded:
* Current number of graphs is up-to-date.
*/
break;
/*
* If we have found a RESTART record then we have also read the list of volatile
* activities following it, reallocated the structures and changed the number of
* items (act[p]->nr) for those volatile activities. So loop again to compute
* the new total number of graphs.
*/
}
while (rtype == R_RESTART);
/* Rewind file and restore items number */
if (lseek(ifd, fpos, SEEK_SET) < fpos) {
perror("lseek");
exit(2);
}
sr_act_nr(save_act_nr, DO_RESTORE);
return tot_g_nr;
}
/*
***************************************************************************
* Read statistics sent by sadc, the data collector.
***************************************************************************
*/
void read_stats(void)
{
int curr = 1;
unsigned long lines;
unsigned int rows = 23;
int dis_hdr = 0;
/* Don't buffer data if redirected to a pipe... */
setbuf(stdout, NULL);
/* Read stats header */
read_header_data();
if (!get_activity_nr(act, AO_SELECTED, COUNT_ACTIVITIES)) {
fprintf(stderr, _("Requested activities not available\n"));
exit(1);
}
/* Determine if a stat line header has to be displayed */
dis_hdr = check_line_hdr();
lines = rows = get_win_height();
/* Perform required allocations */
allocate_structures(act);
/* Print report header */
print_report_hdr(flags, &rectime, &file_hdr,
act[get_activity_position(act, A_CPU)]->nr);
/* Read system statistics sent by the data collector */
read_sadc_stat_bunch(0);
if (!interval) {
/* Display stats since boot time and exit */
write_stats_startup(0);
}
/* Save the first stats collected. Will be used to compute the average */
copy_structures(act, id_seq, record_hdr, 2, 0);
/* Set a handler for SIGINT */
memset(&int_act, 0, sizeof(int_act));
int_act.sa_handler = (void *) int_handler;
int_act.sa_flags = SA_RESTART;
sigaction(SIGINT, &int_act, NULL);
/* Main loop */
do {
/* Get stats */
read_sadc_stat_bunch(curr);
/* Print results */
if (!dis_hdr) {
dis = lines / rows;
if (dis) {
lines %= rows;
}
lines++;
}
write_stats(curr, USE_SADC, &count, NO_TM_START, tm_end.use,
NO_RESET, ALL_ACTIVITIES);
if (record_hdr[curr].record_type == R_LAST_STATS) {
/* File rotation is happening: Re-read header data sent by sadc */
read_header_data();
allocate_structures(act);
}
if (count > 0) {
count--;
}
if (count) {
if (sigint_caught) {
/* SIGINT signal caught => Display average stats */
count = 0;
}
else {
curr ^= 1;
}
}
}
while (count);
/* Print statistics average */
dis = dis_hdr;
write_stats_avg(curr, USE_SADC, ALL_ACTIVITIES);
}
/*
***************************************************************************
* Display file contents in selected format (logic #2).
* Logic #2: Grouped by activity. Sorted by timestamp. Stop on RESTART
* records.
* Formats: ppc, CSV
*
* IN:
* @ifd File descriptor of input file.
* @file_actlst List of (known or unknown) activities in file.
* @cpu_nr Number of processors for current activity data file.
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether options -T/-t have been used or not) can
* be saved for current record.
* @loctime Structure where timestamp (expressed in local time) can be
* saved for current record.
* @file Name of file being read.
* @file_magic file_magic structure filled with file magic header data.
***************************************************************************
*/
void logic2_display_loop(int ifd, struct file_activity *file_actlst, __nr_t cpu_nr,
struct tm *rectime, struct tm *loctime, char *file,
struct file_magic *file_magic)
{
int i, p;
int curr = 1, rtype;
int eosaf = TRUE, reset = FALSE;
long cnt = 1;
off_t fpos;
/* Read system statistics from file */
do {
/*
* If this record is a special (RESTART or COMMENT) one, print it and
* (try to) get another one.
*/
do {
if (read_next_sample(ifd, IGNORE_NOTHING, 0,
file, &rtype, 0, file_magic, file_actlst,
rectime, loctime))
/* End of sa data file */
return;
}
while ((rtype == R_RESTART) || (rtype == R_COMMENT) ||
(tm_start.use && (datecmp(loctime, &tm_start) < 0)) ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)));
/* Save the first stats collected. Used for example in next_slice() function */
copy_structures(act, id_seq, record_hdr, 2, 0);
/* Set flag to reset last_uptime variable. Should be done after a LINUX RESTART record */
reset = TRUE;
/* Save current file position */
if ((fpos = lseek(ifd, 0, SEEK_CUR)) < 0) {
perror("lseek");
exit(2);
}
/* Read and write stats located between two possible Linux restarts */
if (DISPLAY_HORIZONTALLY(flags)) {
/*
* If stats are displayed horizontally, then all activities
* are printed on the same line.
*/
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
ALL_ACTIVITIES, &reset, file_actlst,
cpu_nr, rectime, loctime, file, file_magic);
}
else {
/* For each requested activity... */
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
p = get_activity_position(act, id_seq[i], EXIT_IF_NOT_FOUND);
if (!IS_SELECTED(act[p]->options))
continue;
if (!HAS_MULTIPLE_OUTPUTS(act[p]->options)) {
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
act[p]->id, &reset, file_actlst,
cpu_nr, rectime, loctime, file,
file_magic);
}
else {
unsigned int optf, msk;
optf = act[p]->opt_flags;
for (msk = 1; msk < 0x100; msk <<= 1) {
if ((act[p]->opt_flags & 0xff) & msk) {
act[p]->opt_flags &= (0xffffff00 + msk);
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
act[p]->id, &reset, file_actlst,
cpu_nr, rectime, loctime, file,
file_magic);
act[p]->opt_flags = optf;
}
}
}
}
}
if (!cnt) {
/* Go to next Linux restart, if possible */
do {
eosaf = read_next_sample(ifd, IGNORE_RESTART | DONT_READ_VOLATILE,
curr, file, &rtype, 0, file_magic,
file_actlst, rectime, loctime);
}
while (!eosaf && (rtype != R_RESTART));
}
/*
* The last record we read was a RESTART one: Print it.
* NB: Unlike COMMENTS records (which are displayed for each
* activity), RESTART ones are only displayed once.
*/
if (!eosaf && (record_hdr[curr].record_type == R_RESTART)) {
print_special_record(&record_hdr[curr], flags, &tm_start, &tm_end,
R_RESTART, ifd, rectime, loctime, file, 0,
file_magic, &file_hdr, act, fmt[f_position]);
}
}
while (!eosaf);
}
/*
***************************************************************************
* Display activities for non textual formats.
*
* IN:
* @ifd File descriptor of input file.
* @file_actlst List of (known or unknown) activities in file.
* @cpu_nr Number of processors for current activity data file.
* @rectime Structure where timestamp (expressed in local time or in UTC
* depending on whether option -t has been used or not) can be
* saved for current record.
* @loctime Structure where timestamp (expressed in local time) can be
* saved for current record.
***************************************************************************
*/
void main_display_loop(int ifd, struct file_activity *file_actlst, __nr_t cpu_nr,
struct tm *rectime, struct tm *loctime)
{
int i, p;
int curr = 1, rtype;
int eosaf = TRUE, reset = FALSE;
long cnt = 1;
off_t fpos;
/* Read system statistics from file */
do {
/*
* If this record is a special (RESTART or COMMENT) one, print it and
* (try to) get another one.
*/
do {
if (sa_fread(ifd, &record_hdr[0], RECORD_HEADER_SIZE, SOFT_SIZE))
/* End of sa data file */
return;
rtype = record_hdr[0].record_type;
if ((rtype == R_RESTART) || (rtype == R_COMMENT)) {
sadf_print_special(0, tm_start.use, tm_end.use, rtype, ifd,
rectime, loctime);
}
else {
/*
* OK: Previous record was not a special one.
* So read now the extra fields.
*/
read_file_stat_bunch(act, 0, ifd, file_hdr.sa_nr_act,
file_actlst);
sadf_get_record_timestamp_struct(0, rectime, loctime);
}
}
while ((rtype == R_RESTART) || (rtype == R_COMMENT) ||
(tm_start.use && (datecmp(loctime, &tm_start) < 0)) ||
(tm_end.use && (datecmp(loctime, &tm_end) >= 0)));
/* Save the first stats collected. Will be used to compute the average */
copy_structures(act, id_seq, record_hdr, 2, 0);
/* Set flag to reset last_uptime variable. Should be done after a LINUX RESTART record */
reset = TRUE;
/* Save current file position */
if ((fpos = lseek(ifd, 0, SEEK_CUR)) < 0) {
perror("lseek");
exit(2);
}
/* Read and write stats located between two possible Linux restarts */
if (DISPLAY_HORIZONTALLY(flags)) {
/*
* If stats are displayed horizontally, then all activities
* are printed on the same line.
*/
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
ALL_ACTIVITIES, &reset, file_actlst,
cpu_nr, rectime, loctime);
}
else {
/* For each requested activity... */
for (i = 0; i < NR_ACT; i++) {
if (!id_seq[i])
continue;
if ((p = get_activity_position(act, id_seq[i])) < 0) {
/* Should never happen */
PANIC(1);
}
if (!IS_SELECTED(act[p]->options))
continue;
if (!HAS_MULTIPLE_OUTPUTS(act[p]->options)) {
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
act[p]->id, &reset, file_actlst,
cpu_nr, rectime, loctime);
}
else {
unsigned int optf, msk;
optf = act[p]->opt_flags;
for (msk = 1; msk < 0x10; msk <<= 1) {
if (act[p]->opt_flags & msk) {
act[p]->opt_flags &= msk;
rw_curr_act_stats(ifd, fpos, &curr, &cnt, &eosaf,
act[p]->id, &reset, file_actlst,
cpu_nr, rectime, loctime);
act[p]->opt_flags = optf;
}
}
}
}
}
if (!cnt) {
/* Go to next Linux restart, if possible */
do {
eosaf = sa_fread(ifd, &record_hdr[curr], RECORD_HEADER_SIZE,
SOFT_SIZE);
rtype = record_hdr[curr].record_type;
if (!eosaf && (rtype != R_RESTART) && (rtype != R_COMMENT)) {
read_file_stat_bunch(act, curr, ifd, file_hdr.sa_nr_act,
file_actlst);
}
else if (!eosaf && (rtype == R_COMMENT)) {
/* This was a COMMENT record: print it */
sadf_print_special(curr, tm_start.use, tm_end.use,
R_COMMENT, ifd, rectime, loctime);
}
}
while (!eosaf && (rtype != R_RESTART));
}
/* The last record we read was a RESTART one: Print it */
if (!eosaf && (record_hdr[curr].record_type == R_RESTART)) {
sadf_print_special(curr, tm_start.use, tm_end.use,
R_RESTART, ifd, rectime, loctime);
}
}
while (!eosaf);
}
/*
***************************************************************************
* Print system statistics.
*
* IN:
* @curr Index in array for current sample statistics.
* @read_from_file Set to TRUE if stats are read from a system activity
* data file.
* @use_tm_start Set to TRUE if option -s has been used.
* @use_tm_end Set to TRUE if option -e has been used.
* @reset Set to TRUE if last_uptime variable should be
* reinitialized (used in next_slice() function).
* @act_id Activity that can be displayed or ~0 for all.
* Remember that when reading stats from a file, only
* one activity can be displayed at a time.
* @reset_cd TRUE if static cross_day variable should be reset
* (see below).
*
* OUT:
* @cnt Number of remaining lines to display.
*
* RETURNS:
* 1 if stats have been successfully displayed, and 0 otherwise.
***************************************************************************
*/
int write_stats(int curr, int read_from_file, long *cnt, int use_tm_start,
int use_tm_end, int reset, unsigned int act_id, int reset_cd)
{
int i;
unsigned long long itv, g_itv;
static int cross_day = 0;
static __nr_t cpu_nr = -1;
if (cpu_nr < 0)
cpu_nr = act[get_activity_position(act, A_CPU, EXIT_IF_NOT_FOUND)]->nr;
if (reset_cd) {
/*
* cross_day is a static variable that is set to 1 when the first
* record of stats from a new day is read from a unique data file
* (in the case where the file contains data from two consecutive
* days). When set to 1, every following records timestamp will
* have its hour value increased by 24.
* Yet when a new activity (being read from the file) is going to
* be displayed, we start reading the file from the beginning
* again, and so cross_day should be reset in this case.
*/
cross_day = 0;
}
/* Check time (1) */
if (read_from_file) {
if (!next_slice(record_hdr[2].uptime0, record_hdr[curr].uptime0,
reset, interval))
/* Not close enough to desired interval */
return 0;
}
/* Set previous timestamp */
if (set_record_timestamp_string(!curr, timestamp[!curr], 16))
return 0;
/* Set current timestamp */
if (set_record_timestamp_string(curr, timestamp[curr], 16))
return 0;
/* Check if we are beginning a new day */
if (use_tm_start && record_hdr[!curr].ust_time &&
(record_hdr[curr].ust_time > record_hdr[!curr].ust_time) &&
(record_hdr[curr].hour < record_hdr[!curr].hour)) {
cross_day = 1;
}
if (cross_day) {
/*
* This is necessary if we want to properly handle something like:
* sar -s time_start -e time_end with
* time_start(day D) > time_end(day D+1)
*/
rectime.tm_hour +=24;
}
/* Check time (2) */
if (use_tm_start && (datecmp(&rectime, &tm_start) < 0))
/* it's too soon... */
return 0;
/* Get interval values */
get_itv_value(&record_hdr[curr], &record_hdr[!curr],
cpu_nr, &itv, &g_itv);
/* Check time (3) */
if (use_tm_end && (datecmp(&rectime, &tm_end) > 0)) {
/* It's too late... */
*cnt = 0;
return 0;
}
avg_count++;
/* Test stdout */
TEST_STDOUT(STDOUT_FILENO);
for (i = 0; i < NR_ACT; i++) {
if ((act_id != ALL_ACTIVITIES) && (act[i]->id != act_id))
continue;
if (IS_SELECTED(act[i]->options) && (act[i]->nr > 0)) {
/* Display current activity statistics */
(*act[i]->f_print)(act[i], !curr, curr,
NEED_GLOBAL_ITV(act[i]->options) ? g_itv : itv);
}
}
return 1;
}