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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 <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <hardware/memtrack.h>
#include "memtrack_msm.h"
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define min(x, y) ((x) < (y) ? (x) : (y))
struct memtrack_record record_templates[] = {
{
.flags = MEMTRACK_FLAG_SMAPS_ACCOUNTED |
MEMTRACK_FLAG_PRIVATE |
MEMTRACK_FLAG_NONSECURE,
},
{
.flags = MEMTRACK_FLAG_SMAPS_UNACCOUNTED |
MEMTRACK_FLAG_PRIVATE |
MEMTRACK_FLAG_NONSECURE,
},
};
int kgsl_memtrack_get_memory(pid_t pid, enum memtrack_type type,
struct memtrack_record *records,
size_t *num_records)
{
size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates));
FILE *fp;
char line[1024];
char tmp[128];
size_t accounted_size = 0;
size_t unaccounted_size = 0;
*num_records = ARRAY_SIZE(record_templates);
/* fastpath to return the necessary number of records */
if (allocated_records == 0) {
return 0;
}
memcpy(records, record_templates,
sizeof(struct memtrack_record) * allocated_records);
snprintf(tmp, sizeof(tmp), "/d/kgsl/proc/%d/mem", pid);
fp = fopen(tmp, "r");
if (fp == NULL) {
return -errno;
}
/* Go through each line of <pid>/mem file and for every entry of type "gpumem"
* check if the gpubuffer entry is usermapped or not. If the entry is usermapped
* count the entry as accounted else count the entry as unaccounted.
*/
while (1) {
unsigned long size, mapsize;
char line_type[7];
char flags[10];
char line_usage[19];
int ret, egl_surface_count = 0, egl_image_count = 0;
if (fgets(line, sizeof(line), fp) == NULL) {
break;
}
/* Format:
* gpuaddr useraddr size id flags type usage sglen mapsize eglsrf eglimg
* 545ba000 545ba000 4096 1 -----pY gpumem arraybuffer 1 4096 0 0
*/
ret = sscanf(line, "%*x %*x %lu %*d %9s %6s %18s %*d %lu %6d %6d\n",
&size, flags, line_type, line_usage, &mapsize,
&egl_surface_count, &egl_image_count);
if (ret != 7) {
continue;
}
if (size == 0) {
fclose(fp);
return -EINVAL;
}
if (unaccounted_size + size < size) {
fclose(fp);
return -ERANGE;
}
if (type == MEMTRACK_TYPE_GL && strcmp(line_type, "gpumem") == 0) {
if (flags[6] == 'Y') {
if (accounted_size + mapsize < accounted_size) {
fclose(fp);
return -ERANGE;
}
accounted_size += mapsize;
if (mapsize > size) {
fclose(fp);
return -EINVAL;
}
unaccounted_size += size - mapsize;
} else {
unaccounted_size += size;
}
} else if (type == MEMTRACK_TYPE_GRAPHICS && strcmp(line_type, "ion") == 0) {
if (strcmp(line_usage, "egl_surface") == 0) {
unaccounted_size += size;
}
else if (egl_surface_count == 0) {
unaccounted_size += size / (egl_image_count ? egl_image_count : 1);
}
}
}
if (allocated_records > 0) {
records[0].size_in_bytes = accounted_size;
}
if (allocated_records > 1) {
records[1].size_in_bytes = unaccounted_size;
}
fclose(fp);
return 0;
}
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