2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include <pagemap/pagemap.h>
22 int pm_map_pagemap(pm_map_t *map, uint64_t **pagemap_out, size_t *len) {
26 return pm_process_pagemap_range(map->proc, map->start, map->end,
30 int pm_map_usage_flags(pm_map_t *map, pm_memusage_t *usage_out,
31 uint64_t flags_mask, uint64_t required_flags) {
38 if (!map || !usage_out)
41 error = pm_map_pagemap(map, &pagemap, &len);
42 if (error) return error;
44 pm_memusage_zero(&usage);
46 for (i = 0; i < len; i++) {
47 usage.vss += map->proc->ker->pagesize;
49 if (!PM_PAGEMAP_PRESENT(pagemap[i]))
52 if (!PM_PAGEMAP_SWAPPED(pagemap[i])) {
55 error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
59 if ((flags & flags_mask) != required_flags)
63 error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
67 usage.rss += (count >= 1) ? map->proc->ker->pagesize : (0);
68 usage.pss += (count >= 1) ? (map->proc->ker->pagesize / count) : (0);
69 usage.uss += (count == 1) ? (map->proc->ker->pagesize) : (0);
71 usage.swap += map->proc->ker->pagesize;
75 memcpy(usage_out, &usage, sizeof(usage));
85 int pm_map_usage(pm_map_t *map, pm_memusage_t *usage_out) {
86 return pm_map_usage_flags(map, usage_out, 0, 0);
89 int pm_map_workingset(pm_map_t *map, pm_memusage_t *ws_out) {
92 uint64_t count, flags;
99 error = pm_map_pagemap(map, &pagemap, &len);
100 if (error) return error;
102 pm_memusage_zero(&ws);
104 for (i = 0; i < len; i++) {
105 error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
109 if (!(flags & PM_PAGE_REFERENCED))
112 error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
116 ws.vss += map->proc->ker->pagesize;
117 if( PM_PAGEMAP_SWAPPED(pagemap[i]) ) continue;
118 ws.rss += (count >= 1) ? (map->proc->ker->pagesize) : (0);
119 ws.pss += (count >= 1) ? (map->proc->ker->pagesize / count) : (0);
120 ws.uss += (count == 1) ? (map->proc->ker->pagesize) : (0);
123 memcpy(ws_out, &ws, sizeof(ws));
133 int pm_map_destroy(pm_map_t *map) {