linux/tools/perf/util/values.c
Arnaldo Carvalho de Melo 9c0899f157 perf tools: Don't die on a print function
Trying to remove die() calls from library functions, postponing exiting
to the tool main code.

Link: http://lkml.kernel.org/n/tip-ackxq5nqe39gunln3tkczs42@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-04 12:11:07 -03:00

299 lines
7.6 KiB
C

#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "util.h"
#include "values.h"
#include "debug.h"
int perf_read_values_init(struct perf_read_values *values)
{
values->threads_max = 16;
values->pid = malloc(values->threads_max * sizeof(*values->pid));
values->tid = malloc(values->threads_max * sizeof(*values->tid));
values->value = malloc(values->threads_max * sizeof(*values->value));
if (!values->pid || !values->tid || !values->value) {
pr_debug("failed to allocate read_values threads arrays");
goto out_free_pid;
}
values->threads = 0;
values->counters_max = 16;
values->counterrawid = malloc(values->counters_max
* sizeof(*values->counterrawid));
values->countername = malloc(values->counters_max
* sizeof(*values->countername));
if (!values->counterrawid || !values->countername) {
pr_debug("failed to allocate read_values counters arrays");
goto out_free_counter;
}
values->counters = 0;
return 0;
out_free_counter:
zfree(&values->counterrawid);
zfree(&values->countername);
out_free_pid:
zfree(&values->pid);
zfree(&values->tid);
zfree(&values->value);
return -ENOMEM;
}
void perf_read_values_destroy(struct perf_read_values *values)
{
int i;
if (!values->threads_max || !values->counters_max)
return;
for (i = 0; i < values->threads; i++)
zfree(&values->value[i]);
zfree(&values->value);
zfree(&values->pid);
zfree(&values->tid);
zfree(&values->counterrawid);
for (i = 0; i < values->counters; i++)
zfree(&values->countername[i]);
zfree(&values->countername);
}
static int perf_read_values__enlarge_threads(struct perf_read_values *values)
{
int nthreads_max = values->threads_max * 2;
void *npid = realloc(values->pid, nthreads_max * sizeof(*values->pid)),
*ntid = realloc(values->tid, nthreads_max * sizeof(*values->tid)),
*nvalue = realloc(values->value, nthreads_max * sizeof(*values->value));
if (!npid || !ntid || !nvalue)
goto out_err;
values->threads_max = nthreads_max;
values->pid = npid;
values->tid = ntid;
values->value = nvalue;
return 0;
out_err:
free(npid);
free(ntid);
free(nvalue);
pr_debug("failed to enlarge read_values threads arrays");
return -ENOMEM;
}
static int perf_read_values__findnew_thread(struct perf_read_values *values,
u32 pid, u32 tid)
{
int i;
for (i = 0; i < values->threads; i++)
if (values->pid[i] == pid && values->tid[i] == tid)
return i;
if (values->threads == values->threads_max) {
i = perf_read_values__enlarge_threads(values);
if (i < 0)
return i;
}
i = values->threads + 1;
values->value[i] = malloc(values->counters_max * sizeof(**values->value));
if (!values->value[i]) {
pr_debug("failed to allocate read_values counters array");
return -ENOMEM;
}
values->pid[i] = pid;
values->tid[i] = tid;
values->threads = i;
return i;
}
static int perf_read_values__enlarge_counters(struct perf_read_values *values)
{
char **countername;
int i, counters_max = values->counters_max * 2;
u64 *counterrawid = realloc(values->counterrawid, counters_max * sizeof(*values->counterrawid));
if (!counterrawid) {
pr_debug("failed to enlarge read_values rawid array");
goto out_enomem;
}
countername = realloc(values->countername, counters_max * sizeof(*values->countername));
if (!countername) {
pr_debug("failed to enlarge read_values rawid array");
goto out_free_rawid;
}
for (i = 0; i < values->threads; i++) {
u64 *value = realloc(values->value[i], counters_max * sizeof(**values->value));
if (value) {
pr_debug("failed to enlarge read_values ->values array");
goto out_free_name;
}
values->value[i] = value;
}
values->counters_max = counters_max;
values->counterrawid = counterrawid;
values->countername = countername;
return 0;
out_free_name:
free(countername);
out_free_rawid:
free(counterrawid);
out_enomem:
return -ENOMEM;
}
static int perf_read_values__findnew_counter(struct perf_read_values *values,
u64 rawid, const char *name)
{
int i;
for (i = 0; i < values->counters; i++)
if (values->counterrawid[i] == rawid)
return i;
if (values->counters == values->counters_max) {
i = perf_read_values__enlarge_counters(values);
if (i)
return i;
}
i = values->counters++;
values->counterrawid[i] = rawid;
values->countername[i] = strdup(name);
return i;
}
int perf_read_values_add_value(struct perf_read_values *values,
u32 pid, u32 tid,
u64 rawid, const char *name, u64 value)
{
int tindex, cindex;
tindex = perf_read_values__findnew_thread(values, pid, tid);
if (tindex < 0)
return tindex;
cindex = perf_read_values__findnew_counter(values, rawid, name);
if (cindex < 0)
return cindex;
values->value[tindex][cindex] = value;
return 0;
}
static void perf_read_values__display_pretty(FILE *fp,
struct perf_read_values *values)
{
int i, j;
int pidwidth, tidwidth;
int *counterwidth;
counterwidth = malloc(values->counters * sizeof(*counterwidth));
if (!counterwidth) {
fprintf(fp, "INTERNAL ERROR: Failed to allocate counterwidth array\n");
return;
}
tidwidth = 3;
pidwidth = 3;
for (j = 0; j < values->counters; j++)
counterwidth[j] = strlen(values->countername[j]);
for (i = 0; i < values->threads; i++) {
int width;
width = snprintf(NULL, 0, "%d", values->pid[i]);
if (width > pidwidth)
pidwidth = width;
width = snprintf(NULL, 0, "%d", values->tid[i]);
if (width > tidwidth)
tidwidth = width;
for (j = 0; j < values->counters; j++) {
width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]);
if (width > counterwidth[j])
counterwidth[j] = width;
}
}
fprintf(fp, "# %*s %*s", pidwidth, "PID", tidwidth, "TID");
for (j = 0; j < values->counters; j++)
fprintf(fp, " %*s", counterwidth[j], values->countername[j]);
fprintf(fp, "\n");
for (i = 0; i < values->threads; i++) {
fprintf(fp, " %*d %*d", pidwidth, values->pid[i],
tidwidth, values->tid[i]);
for (j = 0; j < values->counters; j++)
fprintf(fp, " %*" PRIu64,
counterwidth[j], values->value[i][j]);
fprintf(fp, "\n");
}
free(counterwidth);
}
static void perf_read_values__display_raw(FILE *fp,
struct perf_read_values *values)
{
int width, pidwidth, tidwidth, namewidth, rawwidth, countwidth;
int i, j;
tidwidth = 3; /* TID */
pidwidth = 3; /* PID */
namewidth = 4; /* "Name" */
rawwidth = 3; /* "Raw" */
countwidth = 5; /* "Count" */
for (i = 0; i < values->threads; i++) {
width = snprintf(NULL, 0, "%d", values->pid[i]);
if (width > pidwidth)
pidwidth = width;
width = snprintf(NULL, 0, "%d", values->tid[i]);
if (width > tidwidth)
tidwidth = width;
}
for (j = 0; j < values->counters; j++) {
width = strlen(values->countername[j]);
if (width > namewidth)
namewidth = width;
width = snprintf(NULL, 0, "%" PRIx64, values->counterrawid[j]);
if (width > rawwidth)
rawwidth = width;
}
for (i = 0; i < values->threads; i++) {
for (j = 0; j < values->counters; j++) {
width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]);
if (width > countwidth)
countwidth = width;
}
}
fprintf(fp, "# %*s %*s %*s %*s %*s\n",
pidwidth, "PID", tidwidth, "TID",
namewidth, "Name", rawwidth, "Raw",
countwidth, "Count");
for (i = 0; i < values->threads; i++)
for (j = 0; j < values->counters; j++)
fprintf(fp, " %*d %*d %*s %*" PRIx64 " %*" PRIu64,
pidwidth, values->pid[i],
tidwidth, values->tid[i],
namewidth, values->countername[j],
rawwidth, values->counterrawid[j],
countwidth, values->value[i][j]);
}
void perf_read_values_display(FILE *fp, struct perf_read_values *values, int raw)
{
if (raw)
perf_read_values__display_raw(fp, values);
else
perf_read_values__display_pretty(fp, values);
}