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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <memtrack/memtrack.h>
#include <pagemap/pagemap.h>
#define DIV_ROUND_UP(x,y) (((x) + (y) - 1) / (y))
static int getprocname(pid_t pid, char *buf, int len) {
char *filename;
FILE *f;
int rc = 0;
static const char* unknown_cmdline = "<unknown>";
if (len <= 0) {
return -1;
}
if (asprintf(&filename, "/proc/%d/cmdline", pid) < 0) {
rc = 1;
goto exit;
}
f = fopen(filename, "r");
if (f == NULL) {
rc = 2;
goto releasefilename;
}
if (fgets(buf, len, f) == NULL) {
rc = 3;
goto closefile;
}
closefile:
(void) fclose(f);
releasefilename:
free(filename);
exit:
if (rc != 0) {
/*
* The process went away before we could read its process name. Try
* to give the user "<unknown>" here, but otherwise they get to look
* at a blank.
*/
if (strlcpy(buf, unknown_cmdline, (size_t)len) >= (size_t)len) {
rc = 4;
}
}
return rc;
}
int main(int argc, char *argv[])
{
int ret;
pm_kernel_t *ker;
size_t num_procs;
pid_t *pids;
struct memtrack_proc *p;
size_t i;
(void)argc;
(void)argv;
ret = pm_kernel_create(&ker);
if (ret) {
fprintf(stderr, "Error creating kernel interface -- "
"does this kernel have pagemap?\n");
exit(EXIT_FAILURE);
}
ret = pm_kernel_pids(ker, &pids, &num_procs);
if (ret) {
fprintf(stderr, "Error listing processes.\n");
exit(EXIT_FAILURE);
}
p = memtrack_proc_new();
if (ret) {
fprintf(stderr, "failed to create memtrack process handle\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < num_procs; i++) {
pid_t pid = pids[i];
char cmdline[256];
size_t v1;
size_t v2;
size_t v3;
size_t v4;
size_t v5;
size_t v6;
getprocname(pid, cmdline, (int)sizeof(cmdline));
ret = memtrack_proc_get(p, pid);
if (ret) {
fprintf(stderr, "failed to get memory info for pid %d: %s (%d)\n",
pid, strerror(-ret), ret);
continue;
}
v1 = DIV_ROUND_UP(memtrack_proc_graphics_total(p), 1024);
v2 = DIV_ROUND_UP(memtrack_proc_graphics_pss(p), 1024);
v3 = DIV_ROUND_UP(memtrack_proc_gl_total(p), 1024);
v4 = DIV_ROUND_UP(memtrack_proc_gl_pss(p), 1024);
v5 = DIV_ROUND_UP(memtrack_proc_other_total(p), 1024);
v6 = DIV_ROUND_UP(memtrack_proc_other_pss(p), 1024);
if (v1 | v2 | v3 | v4 | v5 | v6) {
printf("%5d %6zu %6zu %6zu %6zu %6zu %6zu %s\n", pid,
v1, v2, v3, v4, v5, v6, cmdline);
}
}
memtrack_proc_destroy(p);
return 0;
}
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