Some games open two USB interfaces, e.g. /dev/usb/oh0 and /dev/usb/hid.
This was causing us to run two scanning threads at once, using up more
CPU time for scanning than we need to.
Instead of having USBScanner create "hooks" as it scans for devices,
let's have USBScanner present a list of devices to USBHost and have
USBHost diff the new device list with its old device list to create the
hook calls instead. This gets rid of some complex edge cases that the
next commit otherwise would have to deal with, in particular regarding
toggling determinism and adding new USBHosts to a USBScanner.
Note: After adding the missing locking of m_devices_mutex, I had to move
the locking of m_hooks_mutex to avoid a random deadlock between the CPU
thread and USB scanning thread. (Either that or I would have to lock
m_devices_mutex before m_hooks_mutex.)
This gets rid of the ugly direct access to USBScanner::m_devices that
was introduced by the previous commit.
This also fixes a potential thread safety issue.
USB_HIDv4::TriggerDeviceChangeReply loops through m_devices and calls
GetDeviceEntry for each device. If USB_HIDv4::TriggerDeviceChangeReply
is called after a new device is added to m_devices but before hooks are
dispatched, GetDeviceEntry crashes, because the hook that's supposed to
update m_device_ids hasn't run yet. With this commit, this issue can no
longer happen, because USBHost::m_devices_mutex doesn't get unlocked in
between updating m_devices and dispatching the hooks.
When you use TimePlayed, you have to provide a game ID either when
creating the object or when calling GetTimePlayed on it. If you don't
provide a game ID when creating the object, function calls that don't
take a game ID will silently fail, except for Reload. This isn't very
obvious, and there's no strong benefit to storing the game ID inside
TimePlayed anyway (it just lets TimePlayed skip calling EscapeFileName),
so this commit removes the TimePlayed constructor that takes a game ID
and instead makes the functions that need game IDs always take a game ID
argument.
This lets you use PS3 Rock Band controllers with Wii Rock Band and
Guitar Hero games.
A normal user will probably never have any reason to disable this
behavior, but I figured maybe there's some person out there who would
like to disable it. (For instance, I know there's a mod for RB3 that's
trying to implement the same kind of cross-console controller
compatibility, and that can only be tested if the behavior I'm adding is
disabled.) So the behavior is controlled by an INI-only setting.
This is an Android continuation of bc95c00. We now call
InputDetector::Update immediately after receiving an input event from
Android instead of periodically calling it in a sleep loop. This
improves detection of very short inputs, which are especially likely to
occur for volume buttons on phones (or at least on my phone) if you
don't intentionally keep them held down.
When I wrote 71e9766519, there was an interaction I didn't take into
account: When setting eq, SetCRFieldBit assumes that all bits in the
passed-in host register except the least significant bit are 0. But if
we use EON or ORN, all bits except the least significant bit get set to
1. This can cause eq to end up unset when it should be set.
This commit fixes the issue.
crandc is unaffected by the issue because the "1" bits get ANDed with
"0" bits from the first operand.
Note that in practice, we never have both bits_1_to_31_are_set and
negate at once, so while it looks like this commit adds an extra AND
instruction in some cases, those cases don't happen in practice, meaning
this fix shouldn't affect performance.
No games seem to use this, so this isn't useful as a performance
optimization, but it's required for correctness because the (sh == 0)
case of our implementation doesn't handle zero masks.
The read thread could call Reset, which in turn tried to join the read
thread, leading to a SIGABRT. This manifested as Dolphin consistently
crashing when disconnecting a GC adapter and having a chance of crashing
a few seconds after connecting a GC adapter.
Unlike on x64, inverting EQ or GT in SetCRFieldBit saves us one
instruction. Also unlike on x64, inverting SO or LT in GetCRFieldBit
requires an extra instruction (just like in SetCRFieldBit). Due to this,
replacing an invert in GetCRFieldBit with an invert in SetCRFieldBit
when possible is either equally good or better - never worse.
Recently we have been getting some requests to make the existing vsync
setting available in the Android GUI:
https://bugs.dolphin-emu.org/issues/13650https://forums.dolphin-emu.org/Thread-vsync-toggle-for-android
I don't quite understand why enabling the vsync setting is helpful when
Android already enforces vsync, but I guess having the option available
doesn't hurt. I'm putting the setting under Advanced, unlike in
DolphinQt, since there's no clear reason why the typical user would want
to use this setting.
This reverts the revert commit bc67fc97c3,
except for the changes in BaseConfigLoader.cpp, which caused the bug
that made us revert 72cf2bdb87. PR 12917
contains an improved change to BaseConfigLoader.cpp, which can be merged
(or rejected) independently.
A few changes have also been made based on review comments.
JosJuice