まぁ、こういう場合は、まずはpsの一覧を見るべきでしょう。qemuでAndroid 2.3のエミュレータを起動して、adb shellからpsの一覧を取得してみます。
USER PID PPID VSIZE RSS WCHAN PC NAME
root 1 0 268 180 c009b74c 0000875c S /init
root 2 0 0 0 c004e72c 00000000 S kthreadd
root 3 2 0 0 c003fdc8 00000000 S ksoftirqd/0
root 4 2 0 0 c004b2c4 00000000 S events/0
root 5 2 0 0 c004b2c4 00000000 S khelper
root 6 2 0 0 c004b2c4 00000000 S suspend
root 7 2 0 0 c004b2c4 00000000 S kblockd/0
root 8 2 0 0 c004b2c4 00000000 S cqueue
root 9 2 0 0 c018179c 00000000 S kseriod
root 10 2 0 0 c004b2c4 00000000 S kmmcd
root 11 2 0 0 c006fc74 00000000 S pdflush
root 12 2 0 0 c006fc74 00000000 S pdflush
root 13 2 0 0 c00744e4 00000000 S kswapd0
root 14 2 0 0 c004b2c4 00000000 S aio/0
root 22 2 0 0 c017ef48 00000000 S mtdblockd
root 23 2 0 0 c004b2c4 00000000 S kstriped
root 24 2 0 0 c004b2c4 00000000 S hid_compat
root 25 2 0 0 c004b2c4 00000000 S rpciod/0
root 26 2 0 0 c019d16c 00000000 S mmcqd
root 27 1 248 152 c009b74c 0000875c S /sbin/ueventd
system 28 1 804 224 c01a94a4 afd0b6fc S /system/bin/servicemanager
root 29 1 3916 436 ffffffff afd0bdac S /system/bin/vold
root 30 1 3888 396 ffffffff afd0bdac S /system/bin/netd
radio 32 1 4388 432 ffffffff afd0bdac S /system/bin/rild
root 33 1 63964 20816 c009b74c afd0b844 S zygote
media 34 1 18236 1352 ffffffff afd0b6fc S /system/bin/mediaserver
root 35 1 812 244 c02181f4 afd0b45c S /system/bin/installd
keystore 36 1 1796 284 c01b52b4 afd0c0cc S /system/bin/keystore
root 37 1 732 208 c003da38 afd0c3ac S /system/bin/sh
root 38 1 820 268 c00b8fec afd0c51c S /system/bin/qemud
shell 40 1 732 208 c0158eb0 afd0b45c S /system/bin/sh
root 41 1 3372 176 ffffffff 00008294 S /sbin/adbd
root 52 37 788 212 c02181f4 afd0b45c S /system/bin/qemu-props
system 59 33 127596 28888 ffffffff afd0b6fc S system_server
app_12 109 33 76020 18872 ffffffff afd0c51c S jp.co.omronsoft.openwnn
radio 113 33 88252 19624 ffffffff afd0c51c S com.android.phone
system 115 33 76332 20672 ffffffff afd0c51c S com.android.systemui
app_1 119 33 79084 22840 ffffffff afd0c51c S com.android.launcher
root 161 41 732 208 c003da38 afd0c3ac S /system/bin/sh
root 162 161 688 284 c009b74c afd0b844 S logcat
app_5 185 33 80392 21484 ffffffff afd0c51c S android.process.acore
app_3 201 33 85188 17904 ffffffff afd0c51c S com.android.mms
app_9 204 33 75264 18544 ffffffff afd0c51c S android.process.media
app_8 237 33 75164 17676 ffffffff afd0c51c S com.android.deskclock
app_13 247 33 75612 18976 ffffffff afd0c51c S com.android.email
app_11 262 33 72828 16468 ffffffff afd0c51c S com.android.protips
root 272 41 732 340 c003da38 afd0c3ac S /system/bin/sh
app_20 275 33 73276 16904 ffffffff afd0c51c S com.android.music
app_26 284 33 73868 17720 ffffffff afd0c51c S com.android.quicksearchbox
root 297 272 740 360 c003da38 afd0c3ac S sh
root 306 1 664 264 c01b52b4 afd0c0cc S /system/bin/debuggerd
root 355 297 892 336 00000000 afd0b45c R ps
root 1 0 268 180 c009b74c 0000875c S /init
root 2 0 0 0 c004e72c 00000000 S kthreadd
root 3 2 0 0 c003fdc8 00000000 S ksoftirqd/0
root 4 2 0 0 c004b2c4 00000000 S events/0
root 5 2 0 0 c004b2c4 00000000 S khelper
root 6 2 0 0 c004b2c4 00000000 S suspend
root 7 2 0 0 c004b2c4 00000000 S kblockd/0
root 8 2 0 0 c004b2c4 00000000 S cqueue
root 9 2 0 0 c018179c 00000000 S kseriod
root 10 2 0 0 c004b2c4 00000000 S kmmcd
root 11 2 0 0 c006fc74 00000000 S pdflush
root 12 2 0 0 c006fc74 00000000 S pdflush
root 13 2 0 0 c00744e4 00000000 S kswapd0
root 14 2 0 0 c004b2c4 00000000 S aio/0
root 22 2 0 0 c017ef48 00000000 S mtdblockd
root 23 2 0 0 c004b2c4 00000000 S kstriped
root 24 2 0 0 c004b2c4 00000000 S hid_compat
root 25 2 0 0 c004b2c4 00000000 S rpciod/0
root 26 2 0 0 c019d16c 00000000 S mmcqd
root 27 1 248 152 c009b74c 0000875c S /sbin/ueventd
system 28 1 804 224 c01a94a4 afd0b6fc S /system/bin/servicemanager
root 29 1 3916 436 ffffffff afd0bdac S /system/bin/vold
root 30 1 3888 396 ffffffff afd0bdac S /system/bin/netd
radio 32 1 4388 432 ffffffff afd0bdac S /system/bin/rild
root 33 1 63964 20816 c009b74c afd0b844 S zygote
media 34 1 18236 1352 ffffffff afd0b6fc S /system/bin/mediaserver
root 35 1 812 244 c02181f4 afd0b45c S /system/bin/installd
keystore 36 1 1796 284 c01b52b4 afd0c0cc S /system/bin/keystore
root 37 1 732 208 c003da38 afd0c3ac S /system/bin/sh
root 38 1 820 268 c00b8fec afd0c51c S /system/bin/qemud
shell 40 1 732 208 c0158eb0 afd0b45c S /system/bin/sh
root 41 1 3372 176 ffffffff 00008294 S /sbin/adbd
root 52 37 788 212 c02181f4 afd0b45c S /system/bin/qemu-props
system 59 33 127596 28888 ffffffff afd0b6fc S system_server
app_12 109 33 76020 18872 ffffffff afd0c51c S jp.co.omronsoft.openwnn
radio 113 33 88252 19624 ffffffff afd0c51c S com.android.phone
system 115 33 76332 20672 ffffffff afd0c51c S com.android.systemui
app_1 119 33 79084 22840 ffffffff afd0c51c S com.android.launcher
root 161 41 732 208 c003da38 afd0c3ac S /system/bin/sh
root 162 161 688 284 c009b74c afd0b844 S logcat
app_5 185 33 80392 21484 ffffffff afd0c51c S android.process.acore
app_3 201 33 85188 17904 ffffffff afd0c51c S com.android.mms
app_9 204 33 75264 18544 ffffffff afd0c51c S android.process.media
app_8 237 33 75164 17676 ffffffff afd0c51c S com.android.deskclock
app_13 247 33 75612 18976 ffffffff afd0c51c S com.android.email
app_11 262 33 72828 16468 ffffffff afd0c51c S com.android.protips
root 272 41 732 340 c003da38 afd0c3ac S /system/bin/sh
app_20 275 33 73276 16904 ffffffff afd0c51c S com.android.music
app_26 284 33 73868 17720 ffffffff afd0c51c S com.android.quicksearchbox
root 297 272 740 360 c003da38 afd0c3ac S sh
root 306 1 664 264 c01b52b4 afd0c0cc S /system/bin/debuggerd
root 355 297 892 336 00000000 afd0b45c R ps
さて、これだとちょっとわかりにくいのでTreeに並べ直してみましょうか。
- /init
- /sbin/ueventd
- /system/bin/servicemanager
- /system/bin/vold
- /system/bin/netd
- /system/bin/rild
- /system/bin/
- zygote
- system_server
- jp.co.omronsoft.openwnn
- com.android.phone
- com.android.systemui
- com.android.launcher
- android.process.acore
- com.android.mms
- android.process.media
- com.android.deskclock
- com.android.email
- com.android.protips
- com.android.music
- com.android.quicksearchbox
- /system/bin/mediaserver
- /system/bin/installd
- /system/bin/keystore
- /system/bin/sh
- /system/bin/qemu-props
- /system/bin/sh
- /sbin/adbd
- /system/bin/sh
- logcat
- /system/bin/sh
- sh
- /system/bin/sh
- /system/bin/debuggerd
- kthreadd
- ksoftirqd/0
- events/0
- khelper
- suspend
- kblockd/0
- cqueue
- kseriod
- kmmcd
- pdflush
- pdflush
- aio/0
- mtdblockd
- kstriped
- hid_compat
- rpciod/0
- mmcqd
はい。だいぶわかりやすくなりましたか。まず、第一の階層としては、initとkthreaddがあります。kthreaddは、kernel threadでカーネルの側のお話です。Android固有の何かがあるかもしれませんが、とりあえず置いておきましょう。
/initから始まるのが、Androidのシステムでした。
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