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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));
char syspath[128];
size_t accounted_size = 0;
size_t unaccounted_size = 0;
FILE *fp;
int ret;
*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);
if (type == MEMTRACK_TYPE_GL) {
snprintf(syspath, sizeof(syspath),
"/sys/class/kgsl/kgsl/proc/%d/gpumem_mapped", pid);
fp = fopen(syspath, "r");
if (fp == NULL)
return -errno;
ret = fscanf(fp, "%zu", &accounted_size);
if (ret != 1) {
fclose(fp);
return -EINVAL;
}
fclose(fp);
snprintf(syspath, sizeof(syspath),
"/sys/class/kgsl/kgsl/proc/%d/gpumem_unmapped", pid);
fp = fopen(syspath, "r");
if (fp == NULL) {
return -errno;
}
ret = fscanf(fp, "%zu", &unaccounted_size);
if (ret != 1) {
fclose(fp);
return -EINVAL;
}
fclose(fp);
} else if (type == MEMTRACK_TYPE_GRAPHICS) {
snprintf(syspath, sizeof(syspath),
"/sys/class/kgsl/kgsl/proc/%d/imported_mem", pid);
fp = fopen(syspath, "r");
if (fp == NULL)
return -errno;
ret = fscanf(fp, "%zu", &unaccounted_size);
if (ret != 1) {
fclose(fp);
return -EINVAL;
}
fclose(fp);
}
if (allocated_records > 0)
records[0].size_in_bytes = accounted_size;
if (allocated_records > 1)
records[1].size_in_bytes = unaccounted_size;
return 0;
}
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