The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 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 |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 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. |
| 15 | */ |
| 16 | |
| 17 | #include <stdlib.h> |
| 18 | #include <string.h> |
| 19 | |
| 20 | #include <pagemap/pagemap.h> |
| 21 | |
| 22 | int pm_map_pagemap(pm_map_t *map, uint64_t **pagemap_out, size_t *len) { |
| 23 | if (!map) |
| 24 | return -1; |
| 25 | |
| 26 | return pm_process_pagemap_range(map->proc, map->start, map->end, |
| 27 | pagemap_out, len); |
| 28 | } |
| 29 | |
Colin Cross | 3a18977 | 2013-05-23 12:53:14 -0700 | [diff] [blame] | 30 | int pm_map_usage_flags(pm_map_t *map, pm_memusage_t *usage_out, |
| 31 | uint64_t flags_mask, uint64_t required_flags) { |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 32 | uint64_t *pagemap; |
| 33 | size_t len, i; |
| 34 | uint64_t count; |
| 35 | pm_memusage_t usage; |
| 36 | int error; |
| 37 | |
| 38 | if (!map || !usage_out) |
| 39 | return -1; |
| 40 | |
| 41 | error = pm_map_pagemap(map, &pagemap, &len); |
| 42 | if (error) return error; |
| 43 | |
| 44 | pm_memusage_zero(&usage); |
| 45 | |
| 46 | for (i = 0; i < len; i++) { |
Colin Cross | ad0b50b | 2013-05-22 16:33:03 -0700 | [diff] [blame] | 47 | usage.vss += map->proc->ker->pagesize; |
| 48 | |
Colin Cross | 745b964 | 2013-06-21 12:53:51 -0700 | [diff] [blame^] | 49 | if (!PM_PAGEMAP_PRESENT(pagemap[i])) |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 50 | continue; |
| 51 | |
Colin Cross | 745b964 | 2013-06-21 12:53:51 -0700 | [diff] [blame^] | 52 | if (!PM_PAGEMAP_SWAPPED(pagemap[i])) { |
| 53 | if (flags_mask) { |
| 54 | uint64_t flags; |
| 55 | error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]), |
| 56 | &flags); |
| 57 | if (error) goto out; |
| 58 | |
| 59 | if ((flags & flags_mask) != required_flags) |
| 60 | continue; |
| 61 | } |
| 62 | |
| 63 | error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]), |
| 64 | &count); |
Colin Cross | 3a18977 | 2013-05-23 12:53:14 -0700 | [diff] [blame] | 65 | if (error) goto out; |
| 66 | |
Colin Cross | 745b964 | 2013-06-21 12:53:51 -0700 | [diff] [blame^] | 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); |
| 70 | } else { |
| 71 | usage.swap += map->proc->ker->pagesize; |
Colin Cross | 3a18977 | 2013-05-23 12:53:14 -0700 | [diff] [blame] | 72 | } |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | memcpy(usage_out, &usage, sizeof(usage)); |
| 76 | |
| 77 | error = 0; |
| 78 | |
| 79 | out: |
| 80 | free(pagemap); |
| 81 | |
| 82 | return error; |
| 83 | } |
| 84 | |
Colin Cross | 3a18977 | 2013-05-23 12:53:14 -0700 | [diff] [blame] | 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); |
| 87 | } |
| 88 | |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 89 | int pm_map_workingset(pm_map_t *map, pm_memusage_t *ws_out) { |
| 90 | uint64_t *pagemap; |
| 91 | size_t len, i; |
| 92 | uint64_t count, flags; |
| 93 | pm_memusage_t ws; |
| 94 | int error; |
| 95 | |
| 96 | if (!map || !ws_out) |
| 97 | return -1; |
| 98 | |
| 99 | error = pm_map_pagemap(map, &pagemap, &len); |
| 100 | if (error) return error; |
| 101 | |
| 102 | pm_memusage_zero(&ws); |
| 103 | |
| 104 | for (i = 0; i < len; i++) { |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 105 | error = pm_kernel_flags(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]), |
| 106 | &flags); |
| 107 | if (error) goto out; |
| 108 | |
| 109 | if (!(flags & PM_PAGE_REFERENCED)) |
| 110 | continue; |
| 111 | |
| 112 | error = pm_kernel_count(map->proc->ker, PM_PAGEMAP_PFN(pagemap[i]), |
| 113 | &count); |
| 114 | if (error) goto out; |
| 115 | |
| 116 | ws.vss += map->proc->ker->pagesize; |
Selim Gurun | 76e6cb5 | 2012-01-20 19:44:54 -0800 | [diff] [blame] | 117 | if( PM_PAGEMAP_SWAPPED(pagemap[i]) ) continue; |
The Android Open Source Project | e16cb84 | 2009-03-03 19:32:58 -0800 | [diff] [blame] | 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); |
| 121 | } |
| 122 | |
| 123 | memcpy(ws_out, &ws, sizeof(ws)); |
| 124 | |
| 125 | error = 0; |
| 126 | |
| 127 | out: |
| 128 | free(pagemap); |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | int pm_map_destroy(pm_map_t *map) { |
| 134 | if (!map) |
| 135 | return -1; |
| 136 | |
| 137 | free(map->name); |
| 138 | free(map); |
| 139 | |
| 140 | return 0; |
| 141 | } |