The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 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 | |
Dianne Hackborn | 555f89d | 2012-05-08 18:54:22 -0700 | [diff] [blame] | 17 | #define LOG_TAG "misc" |
| 18 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 19 | // |
| 20 | // Miscellaneous utility functions. |
| 21 | // |
| 22 | #include <utils/misc.h> |
Dianne Hackborn | 555f89d | 2012-05-08 18:54:22 -0700 | [diff] [blame] | 23 | #include <utils/Log.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | |
| 25 | #include <sys/stat.h> |
| 26 | #include <string.h> |
| 27 | #include <errno.h> |
| 28 | #include <assert.h> |
| 29 | #include <stdio.h> |
| 30 | |
Dianne Hackborn | 555f89d | 2012-05-08 18:54:22 -0700 | [diff] [blame] | 31 | #if defined(HAVE_PTHREADS) |
| 32 | # include <pthread.h> |
| 33 | #endif |
| 34 | |
| 35 | #include <utils/Vector.h> |
| 36 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | using namespace android; |
| 38 | |
| 39 | namespace android { |
| 40 | |
| 41 | /* |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 42 | * Get a file's type. |
| 43 | */ |
| 44 | FileType getFileType(const char* fileName) |
| 45 | { |
| 46 | struct stat sb; |
| 47 | |
| 48 | if (stat(fileName, &sb) < 0) { |
| 49 | if (errno == ENOENT || errno == ENOTDIR) |
| 50 | return kFileTypeNonexistent; |
| 51 | else { |
| 52 | fprintf(stderr, "getFileType got errno=%d on '%s'\n", |
| 53 | errno, fileName); |
| 54 | return kFileTypeUnknown; |
| 55 | } |
| 56 | } else { |
| 57 | if (S_ISREG(sb.st_mode)) |
| 58 | return kFileTypeRegular; |
| 59 | else if (S_ISDIR(sb.st_mode)) |
| 60 | return kFileTypeDirectory; |
| 61 | else if (S_ISCHR(sb.st_mode)) |
| 62 | return kFileTypeCharDev; |
| 63 | else if (S_ISBLK(sb.st_mode)) |
| 64 | return kFileTypeBlockDev; |
| 65 | else if (S_ISFIFO(sb.st_mode)) |
| 66 | return kFileTypeFifo; |
| 67 | #ifdef HAVE_SYMLINKS |
| 68 | else if (S_ISLNK(sb.st_mode)) |
| 69 | return kFileTypeSymlink; |
| 70 | else if (S_ISSOCK(sb.st_mode)) |
| 71 | return kFileTypeSocket; |
| 72 | #endif |
| 73 | else |
| 74 | return kFileTypeUnknown; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * Get a file's modification date. |
| 80 | */ |
| 81 | time_t getFileModDate(const char* fileName) |
| 82 | { |
| 83 | struct stat sb; |
| 84 | |
| 85 | if (stat(fileName, &sb) < 0) |
| 86 | return (time_t) -1; |
| 87 | |
| 88 | return sb.st_mtime; |
| 89 | } |
| 90 | |
Dianne Hackborn | 555f89d | 2012-05-08 18:54:22 -0700 | [diff] [blame] | 91 | struct sysprop_change_callback_info { |
| 92 | sysprop_change_callback callback; |
| 93 | int priority; |
| 94 | }; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 95 | |
Dianne Hackborn | 555f89d | 2012-05-08 18:54:22 -0700 | [diff] [blame] | 96 | #if defined(HAVE_PTHREADS) |
| 97 | static pthread_mutex_t gSyspropMutex = PTHREAD_MUTEX_INITIALIZER; |
| 98 | static Vector<sysprop_change_callback_info>* gSyspropList = NULL; |
| 99 | #endif |
| 100 | |
| 101 | void add_sysprop_change_callback(sysprop_change_callback cb, int priority) { |
| 102 | #if defined(HAVE_PTHREADS) |
| 103 | pthread_mutex_lock(&gSyspropMutex); |
| 104 | if (gSyspropList == NULL) { |
| 105 | gSyspropList = new Vector<sysprop_change_callback_info>(); |
| 106 | } |
| 107 | sysprop_change_callback_info info; |
| 108 | info.callback = cb; |
| 109 | info.priority = priority; |
| 110 | bool added = false; |
| 111 | for (size_t i=0; i<gSyspropList->size(); i++) { |
| 112 | if (priority >= gSyspropList->itemAt(i).priority) { |
| 113 | gSyspropList->insertAt(info, i); |
| 114 | added = true; |
| 115 | break; |
| 116 | } |
| 117 | } |
| 118 | if (!added) { |
| 119 | gSyspropList->add(info); |
| 120 | } |
| 121 | pthread_mutex_unlock(&gSyspropMutex); |
| 122 | #endif |
| 123 | } |
| 124 | |
| 125 | void report_sysprop_change() { |
| 126 | #if defined(HAVE_PTHREADS) |
| 127 | pthread_mutex_lock(&gSyspropMutex); |
| 128 | Vector<sysprop_change_callback_info> listeners; |
| 129 | if (gSyspropList != NULL) { |
| 130 | listeners = *gSyspropList; |
| 131 | } |
| 132 | pthread_mutex_unlock(&gSyspropMutex); |
| 133 | |
| 134 | //ALOGI("Reporting sysprop change to %d listeners", listeners.size()); |
| 135 | for (size_t i=0; i<listeners.size(); i++) { |
| 136 | listeners[i].callback(); |
| 137 | } |
| 138 | #endif |
| 139 | } |
| 140 | |
| 141 | }; // namespace android |