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);
45 pm_memusage_pswap_init_handle(&usage, usage_out->p_swap);
47 for (i = 0; i < len; i++) {
48 usage.vss += map->proc->ker->pagesize;
50 if (!PM_PAGEMAP_PRESENT(pagemap[i]) &&
51 !PM_PAGEMAP_SWAPPED(pagemap[i]))
54 if (!PM_PAGEMAP_SWAPPED(pagemap[i])) {
57 error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
61 if ((flags & flags_mask) != required_flags)
65 error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
69 usage.rss += (count >= 1) ? map->proc->ker->pagesize : (0);
70 usage.pss += (count >= 1) ? (map->proc->ker->pagesize / count) : (0);
71 usage.uss += (count == 1) ? (map->proc->ker->pagesize) : (0);
73 usage.swap += map->proc->ker->pagesize;
74 pm_memusage_pswap_add_offset(&usage, PM_PAGEMAP_SWAP_OFFSET(pagemap[i]));
78 memcpy(usage_out, &usage, sizeof(usage));
88 int pm_map_usage(pm_map_t *map, pm_memusage_t *usage_out) {
89 return pm_map_usage_flags(map, usage_out, 0, 0);
92 int pm_map_workingset(pm_map_t *map, pm_memusage_t *ws_out) {
95 uint64_t count, flags;
102 error = pm_map_pagemap(map, &pagemap, &len);
103 if (error) return error;
105 pm_memusage_zero(&ws);
107 for (i = 0; i < len; i++) {
108 error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
112 if (!(flags & KPF_REFERENCED))
115 error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]),
119 ws.vss += map->proc->ker->pagesize;
120 if( PM_PAGEMAP_SWAPPED(pagemap[i]) ) continue;
121 ws.rss += (count >= 1) ? (map->proc->ker->pagesize) : (0);
122 ws.pss += (count >= 1) ? (map->proc->ker->pagesize / count) : (0);
123 ws.uss += (count == 1) ? (map->proc->ker->pagesize) : (0);
126 memcpy(ws_out, &ws, sizeof(ws));
136 int pm_map_destroy(pm_map_t *map) {