Colin Cross | fc600e4 | 2013-09-06 16:41:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
Adam Lesinski | 481b947 | 2013-09-23 18:42:41 -0700 | [diff] [blame^] | 17 | #include <memtrack/memtrack.h> |
Colin Cross | fc600e4 | 2013-09-06 16:41:40 -0700 | [diff] [blame] | 18 | |
| 19 | #define LOG_TAG "memtrack" |
| 20 | |
| 21 | #include <log/log.h> |
| 22 | |
| 23 | #include <hardware/memtrack.h> |
| 24 | |
| 25 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
| 26 | |
| 27 | static const memtrack_module_t *module; |
| 28 | |
| 29 | struct memtrack_proc { |
| 30 | pid_t pid; |
| 31 | struct memtrack_proc_type { |
| 32 | enum memtrack_type type; |
| 33 | size_t num_records; |
| 34 | size_t allocated_records; |
| 35 | struct memtrack_record *records; |
| 36 | } types[MEMTRACK_NUM_TYPES]; |
| 37 | }; |
| 38 | |
| 39 | int memtrack_init(void) |
| 40 | { |
| 41 | int err; |
| 42 | |
| 43 | if (module) { |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | err = hw_get_module(MEMTRACK_HARDWARE_MODULE_ID, |
| 48 | (hw_module_t const**)&module); |
| 49 | if (err) { |
| 50 | ALOGE("Couldn't load %s module (%s)", MEMTRACK_HARDWARE_MODULE_ID, |
| 51 | strerror(-err)); |
| 52 | return err; |
| 53 | } |
| 54 | |
| 55 | return module->init(module); |
| 56 | } |
| 57 | |
| 58 | struct memtrack_proc *memtrack_proc_new(void) |
| 59 | { |
| 60 | if (!module) { |
| 61 | return NULL; |
| 62 | } |
| 63 | |
| 64 | return calloc(sizeof(struct memtrack_proc), 1); |
| 65 | } |
| 66 | |
| 67 | void memtrack_proc_destroy(struct memtrack_proc *p) |
| 68 | { |
| 69 | enum memtrack_type i; |
| 70 | |
| 71 | if (p) { |
| 72 | for (i = 0; i < MEMTRACK_NUM_TYPES; i++) { |
| 73 | free(p->types[i].records); |
| 74 | } |
| 75 | } |
| 76 | free(p); |
| 77 | } |
| 78 | |
| 79 | static int memtrack_proc_get_type(struct memtrack_proc_type *t, |
| 80 | pid_t pid, enum memtrack_type type) |
| 81 | { |
| 82 | size_t num_records = t->num_records; |
| 83 | int ret; |
| 84 | |
| 85 | retry: |
| 86 | ret = module->getMemory(module, pid, type, t->records, &num_records); |
| 87 | if (ret) { |
| 88 | t->num_records = 0; |
| 89 | return ret; |
| 90 | } |
| 91 | if (num_records > t->allocated_records) { |
| 92 | /* Need more records than allocated */ |
| 93 | free(t->records); |
| 94 | t->records = calloc(sizeof(*t->records), num_records); |
| 95 | if (!t->records) { |
| 96 | return -ENOMEM; |
| 97 | } |
| 98 | t->allocated_records = num_records; |
| 99 | goto retry; |
| 100 | } |
| 101 | t->num_records = num_records; |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | /* TODO: sanity checks on return values from HALs: |
| 107 | * make sure no records have invalid flags set |
| 108 | * - unknown flags |
| 109 | * - too many flags of a single category |
| 110 | * - missing ACCOUNTED/UNACCOUNTED |
| 111 | * make sure there are not overlapping SHARED and SHARED_PSS records |
| 112 | */ |
| 113 | static int memtrack_proc_sanity_check(struct memtrack_proc *p) |
| 114 | { |
| 115 | (void)p; |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | int memtrack_proc_get(struct memtrack_proc *p, pid_t pid) |
| 120 | { |
| 121 | enum memtrack_type i; |
| 122 | |
| 123 | if (!module) { |
| 124 | return -EINVAL; |
| 125 | } |
| 126 | |
| 127 | if (!p) { |
| 128 | return -EINVAL; |
| 129 | } |
| 130 | |
| 131 | p->pid = pid; |
| 132 | for (i = 0; i < MEMTRACK_NUM_TYPES; i++) { |
| 133 | memtrack_proc_get_type(&p->types[i], pid, i); |
| 134 | } |
| 135 | |
| 136 | return memtrack_proc_sanity_check(p); |
| 137 | } |
| 138 | |
| 139 | static ssize_t memtrack_proc_sum(struct memtrack_proc *p, |
| 140 | enum memtrack_type types[], size_t num_types, |
| 141 | unsigned int flags) |
| 142 | { |
| 143 | ssize_t sum = 0; |
| 144 | size_t i; |
| 145 | size_t j; |
| 146 | |
| 147 | for (i = 0; i < num_types; i++) { |
| 148 | enum memtrack_type type = types[i]; |
| 149 | for (j = 0; j < p->types[type].num_records; j++) { |
| 150 | if ((p->types[type].records[j].flags & flags) == flags) { |
| 151 | sum += p->types[type].records[j].size_in_bytes; |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | return sum; |
| 157 | } |
| 158 | |
| 159 | ssize_t memtrack_proc_graphics_total(struct memtrack_proc *p) |
| 160 | { |
| 161 | enum memtrack_type types[] = { MEMTRACK_TYPE_GRAPHICS }; |
| 162 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), 0); |
| 163 | } |
| 164 | |
| 165 | ssize_t memtrack_proc_graphics_pss(struct memtrack_proc *p) |
| 166 | { |
| 167 | enum memtrack_type types[] = { MEMTRACK_TYPE_GRAPHICS }; |
| 168 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), |
| 169 | MEMTRACK_FLAG_SMAPS_UNACCOUNTED); |
| 170 | } |
| 171 | |
| 172 | ssize_t memtrack_proc_gl_total(struct memtrack_proc *p) |
| 173 | { |
| 174 | enum memtrack_type types[] = { MEMTRACK_TYPE_GL }; |
| 175 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), 0); |
| 176 | } |
| 177 | |
| 178 | ssize_t memtrack_proc_gl_pss(struct memtrack_proc *p) |
| 179 | { |
| 180 | enum memtrack_type types[] = { MEMTRACK_TYPE_GL }; |
| 181 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), |
| 182 | MEMTRACK_FLAG_SMAPS_UNACCOUNTED); |
| 183 | } |
| 184 | |
| 185 | ssize_t memtrack_proc_other_total(struct memtrack_proc *p) |
| 186 | { |
| 187 | enum memtrack_type types[] = { MEMTRACK_TYPE_MULTIMEDIA, |
| 188 | MEMTRACK_TYPE_CAMERA, |
| 189 | MEMTRACK_TYPE_OTHER }; |
| 190 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), 0); |
| 191 | } |
| 192 | |
| 193 | ssize_t memtrack_proc_other_pss(struct memtrack_proc *p) |
| 194 | { |
| 195 | enum memtrack_type types[] = { MEMTRACK_TYPE_MULTIMEDIA, |
| 196 | MEMTRACK_TYPE_CAMERA, |
| 197 | MEMTRACK_TYPE_OTHER }; |
| 198 | return memtrack_proc_sum(p, types, ARRAY_SIZE(types), |
| 199 | MEMTRACK_FLAG_SMAPS_UNACCOUNTED); |
| 200 | } |