When device goes offline, user usually has to manually replug the
usb device. This patch tries to solve two offline situations, all
because when adb on host is killed, the adbd on device is not notified.
1. When adb server is killed while pushing a large file to device,
the device is still reading the unfinished large message. So the
device thinks of the CNXN message as part of the previous unfinished
message, so it doesn't reply and the device is in offline state.
The solution is to add a write_msg_lock in atransport struct. And it
kicks the transport only after sending a whole message. By kicking
all transports before exit, we ensure that we don't write part of
a message to any device. So next time we start adb server, the device
should be waiting for a new message.
2. When adb server is killed while pulling a large file from device,
the device is still trying to send the unfinished large message. So
adb on host usually reads data with EOVERFLOW error. This is because
adb on host is reading less than one packet sent from device.
The solution is to use buffered read on host. The max packet size
of bulk transactions in USB 3.0 is 1024 bytes. By preparing an at least
1024 bytes buffer when reading, EOVERFLOW no longer occurs. And teach
adb host to ignore wrong messages.
To be safe, this patch doesn't change any logic on device.
Bug: http://b/32952319
Test: run python -m unittest -q test_device.DeviceOfflineTest
Test: on linux/mac/windows with bullhead, ryu.
Change-Id: Ib149d30028a62a6f03857b8a95ab5a1d6e9b9c4e
The ADB trace enum value collided with the 0 values used to mean all, hence it
was not possible to just trace the ADB tagged messages without also tracing everything else.
Change-Id: I15ff9c50c4ac01806c4841cf8213ce859faf130b
Test: Manually by setting ADB_TRACE and running adb, e.g. "ADB_TRACE=adb adb shell ls"
But not for Windows, because even dealing with environment variables is
too hard there (and no Windows user has complained yet).
Bug: http://b/30184452
Test: manual
Change-Id: I2d60049ed0049a9532414a7cdecbd0687e06aba7
I've been using these changes to compile with Visual Studio.
- GetFileBasename(): __FILE__ uses \ with Visual Studio.
- adb_trace.cpp: Apparently VS needs an ampersand before the function name.
- "expr1 ? : expr2" is a GCC extension.
- <algorithm> contains std::min().
- seekdir can't always be #define'd because some headers have members
named seekdir.
- adb_utils.cpp: Not really a compiler issue, just a random fix:
0x7F/DEL is not printable.
Change-Id: I0dfb634f1ba4ccbc0d1b9f71b00e838fbebb3b41
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>
Our Windows code has several different ways it checks whether an FD is
a console or not, some of which aren't exactly correct as they may
treat character devices (e.g. NUL) as consoles.
This CL disallows using the builtin isatty() function and provides
unix_isatty() instead which correctly checks these corner cases.
Change-Id: I6d551c745dae691c7eb3446b585265d62c1e62fa
