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119 lines
3.1 KiB
119 lines
3.1 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <hardware/memtrack.h>
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#include "memtrack_msm.h"
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
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#define min(x, y) ((x) < (y) ? (x) : (y))
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struct memtrack_record record_templates[] = {
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{
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.flags = MEMTRACK_FLAG_SMAPS_ACCOUNTED |
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MEMTRACK_FLAG_PRIVATE |
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MEMTRACK_FLAG_NONSECURE,
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},
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{
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.flags = MEMTRACK_FLAG_SMAPS_UNACCOUNTED |
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MEMTRACK_FLAG_PRIVATE |
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MEMTRACK_FLAG_NONSECURE,
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},
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};
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int kgsl_memtrack_get_memory(pid_t pid, enum memtrack_type type,
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struct memtrack_record *records,
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size_t *num_records)
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{
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size_t allocated_records = min(*num_records, ARRAY_SIZE(record_templates));
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char syspath[128];
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size_t accounted_size = 0;
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size_t unaccounted_size = 0;
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FILE *fp;
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int ret;
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*num_records = ARRAY_SIZE(record_templates);
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/* fastpath to return the necessary number of records */
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if (allocated_records == 0)
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return 0;
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memcpy(records, record_templates,
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sizeof(struct memtrack_record) * allocated_records);
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if (type == MEMTRACK_TYPE_GL) {
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snprintf(syspath, sizeof(syspath),
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"/sys/class/kgsl/kgsl/proc/%d/gpumem_mapped", pid);
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fp = fopen(syspath, "r");
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if (fp == NULL)
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return -errno;
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ret = fscanf(fp, "%zu", &accounted_size);
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if (ret != 1) {
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fclose(fp);
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return -EINVAL;
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}
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fclose(fp);
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snprintf(syspath, sizeof(syspath),
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"/sys/class/kgsl/kgsl/proc/%d/gpumem_unmapped", pid);
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fp = fopen(syspath, "r");
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if (fp == NULL) {
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return -errno;
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}
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ret = fscanf(fp, "%zu", &unaccounted_size);
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if (ret != 1) {
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fclose(fp);
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return -EINVAL;
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}
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fclose(fp);
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} else if (type == MEMTRACK_TYPE_GRAPHICS) {
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snprintf(syspath, sizeof(syspath),
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"/sys/class/kgsl/kgsl/proc/%d/imported_mem", pid);
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fp = fopen(syspath, "r");
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if (fp == NULL)
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return -errno;
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ret = fscanf(fp, "%zu", &unaccounted_size);
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if (ret != 1) {
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fclose(fp);
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return -EINVAL;
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}
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fclose(fp);
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}
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if (allocated_records > 0)
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records[0].size_in_bytes = accounted_size;
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if (allocated_records > 1)
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records[1].size_in_bytes = unaccounted_size;
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return 0;
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}
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