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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 <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <hardware/memtrack.h>
#include "memtrack_exynos5.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 mali_memtrack_get_memory(pid_t pid, int type,
struct memtrack_record *records,
size_t *num_records)
{
size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates));
int i;
FILE *fp;
char line[1024];
*num_records = ARRAY_SIZE(record_templates);
/* fastpath to return the necessary number of records */
if (allocated_records == 0) {
return 0;
}
fp = fopen("/sys/devices/platform/mali.0/gpu_memory", "r");
if (fp == NULL) {
return -errno;
}
memcpy(records, record_templates,
sizeof(struct memtrack_record) * allocated_records);
while (1) {
if (fgets(line, sizeof(line), fp) == NULL) {
break;
}
/* Format:
* Name pid cap(pages) usage(pages) unmapped(pages)
* =================================================================
* mali0 524288 85163
* ndroid.calendar 10708 1048575 181 111
*/
if (line[0] == ' ' && line[1] == ' ') {
unsigned int allocated;
unsigned int unmapped;
int line_pid;
int ret = sscanf(line, " %*s %u %*u %u %u\n",
&line_pid, &allocated, &unmapped);
if (ret == 3 && line_pid == pid) {
if (allocated_records > 0) {
records[0].size_in_bytes = (allocated - unmapped) * PAGE_SIZE;
}
if (allocated_records > 1) {
records[1].size_in_bytes = unmapped * PAGE_SIZE;
}
break;
}
}
}
fclose(fp);
return 0;
}
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