Inputflinger : Use BitArray class to replace raw bytes array.
For EventHub device, use std::bitset vector BitArray to store and input device event driver
property as bitmask, to replace the raw bytes array.
Bug: 160010896
Test: atest EventHubTest, atest inputflinger_tests
Change-Id: I6486535feb097f7dfb24a56f666b1d02ea736a58
diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index 5e590d0..fe428f1 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -43,22 +43,11 @@
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/Timers.h>
-#include <utils/threads.h>
#include <filesystem>
#include "EventHub.h"
-/* this macro is used to tell if "bit" is set in "array"
- * it selects a byte from the array, and does a boolean AND
- * operation with a byte that only has the relevant bit set.
- * eg. to check for the 12th bit, we do (array[1] & 1<<4)
- */
-#define test_bit(bit, array) ((array)[(bit) / 8] & (1 << ((bit) % 8)))
-
-/* this macro computes the number of bytes needed to represent a bit array of the specified size */
-#define sizeof_bit_array(bits) (((bits) + 7) / 8)
-
#define INDENT " "
#define INDENT2 " "
#define INDENT3 " "
@@ -193,15 +182,7 @@
ffEffectId(-1),
controllerNumber(0),
enabled(true),
- isVirtual(fd < 0) {
- memset(keyBitmask, 0, sizeof(keyBitmask));
- memset(absBitmask, 0, sizeof(absBitmask));
- memset(relBitmask, 0, sizeof(relBitmask));
- memset(swBitmask, 0, sizeof(swBitmask));
- memset(ledBitmask, 0, sizeof(ledBitmask));
- memset(ffBitmask, 0, sizeof(ffBitmask));
- memset(propBitmask, 0, sizeof(propBitmask));
-}
+ isVirtual(fd < 0) {}
EventHub::Device::~Device() {
close();
@@ -391,7 +372,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd() && test_bit(axis, device->absBitmask)) {
+ if (device != nullptr && device->hasValidFd() && device->absBitmask.test(axis)) {
struct input_absinfo info;
if (ioctl(device->fd, EVIOCGABS(axis), &info)) {
ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d", axis,
@@ -418,9 +399,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device) {
- return test_bit(axis, device->relBitmask);
- }
+ return device != nullptr ? device->relBitmask.test(axis) : false;
}
return false;
}
@@ -430,9 +409,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device) {
- return test_bit(property, device->propBitmask);
- }
+ return device != nullptr ? device->propBitmask.test(property) : false;
}
return false;
}
@@ -442,11 +419,9 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd() && test_bit(scanCode, device->keyBitmask)) {
- uint8_t keyState[sizeof_bit_array(KEY_MAX + 1)];
- memset(keyState, 0, sizeof(keyState));
- if (ioctl(device->fd, EVIOCGKEY(sizeof(keyState)), keyState) >= 0) {
- return test_bit(scanCode, keyState) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
+ if (device != nullptr && device->hasValidFd() && device->keyBitmask.test(scanCode)) {
+ if (device->readDeviceBitMask(EVIOCGKEY(0), device->keyState) >= 0) {
+ return device->keyState.test(scanCode) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
}
}
}
@@ -457,16 +432,14 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd() && device->keyMap.haveKeyLayout()) {
+ if (device != nullptr && device->hasValidFd() && device->keyMap.haveKeyLayout()) {
std::vector<int32_t> scanCodes;
device->keyMap.keyLayoutMap->findScanCodesForKey(keyCode, &scanCodes);
if (scanCodes.size() != 0) {
- uint8_t keyState[sizeof_bit_array(KEY_MAX + 1)];
- memset(keyState, 0, sizeof(keyState));
- if (ioctl(device->fd, EVIOCGKEY(sizeof(keyState)), keyState) >= 0) {
+ if (device->readDeviceBitMask(EVIOCGKEY(0), device->keyState) >= 0) {
for (size_t i = 0; i < scanCodes.size(); i++) {
int32_t sc = scanCodes[i];
- if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, keyState)) {
+ if (sc >= 0 && sc <= KEY_MAX && device->keyState.test(sc)) {
return AKEY_STATE_DOWN;
}
}
@@ -482,11 +455,9 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd() && test_bit(sw, device->swBitmask)) {
- uint8_t swState[sizeof_bit_array(SW_MAX + 1)];
- memset(swState, 0, sizeof(swState));
- if (ioctl(device->fd, EVIOCGSW(sizeof(swState)), swState) >= 0) {
- return test_bit(sw, swState) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
+ if (device != nullptr && device->hasValidFd() && device->swBitmask.test(sw)) {
+ if (device->readDeviceBitMask(EVIOCGSW(0), device->swState) >= 0) {
+ return device->swState.test(sw) ? AKEY_STATE_DOWN : AKEY_STATE_UP;
}
}
}
@@ -500,7 +471,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd() && test_bit(axis, device->absBitmask)) {
+ if (device != nullptr && device->hasValidFd() && device->absBitmask.test(axis)) {
struct input_absinfo info;
if (ioctl(device->fd, EVIOCGABS(axis), &info)) {
ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d", axis,
@@ -520,7 +491,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->keyMap.haveKeyLayout()) {
+ if (device != nullptr && device->keyMap.haveKeyLayout()) {
std::vector<int32_t> scanCodes;
for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) {
scanCodes.clear();
@@ -531,7 +502,7 @@
// check the possible scan codes identified by the layout map against the
// map of codes actually emitted by the driver
for (size_t sc = 0; sc < scanCodes.size(); sc++) {
- if (test_bit(scanCodes[sc], device->keyBitmask)) {
+ if (device->keyBitmask.test(scanCodes[sc])) {
outFlags[codeIndex] = 1;
break;
}
@@ -549,7 +520,7 @@
Device* device = getDeviceLocked(deviceId);
status_t status = NAME_NOT_FOUND;
- if (device) {
+ if (device != nullptr) {
// Check the key character map first.
sp<KeyCharacterMap> kcm = device->getKeyCharacterMap();
if (kcm != nullptr) {
@@ -588,7 +559,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->keyMap.haveKeyLayout()) {
+ if (device != nullptr && device->keyMap.haveKeyLayout()) {
status_t err = device->keyMap.keyLayoutMap->mapAxis(scanCode, outAxisInfo);
if (err == NO_ERROR) {
return NO_ERROR;
@@ -607,10 +578,8 @@
bool EventHub::hasScanCode(int32_t deviceId, int32_t scanCode) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && scanCode >= 0 && scanCode <= KEY_MAX) {
- if (test_bit(scanCode, device->keyBitmask)) {
- return true;
- }
+ if (device != nullptr && scanCode >= 0 && scanCode <= KEY_MAX) {
+ return device->keyBitmask.test(scanCode);
}
return false;
}
@@ -619,10 +588,8 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
int32_t sc;
- if (device && mapLed(device, led, &sc) == NO_ERROR) {
- if (test_bit(sc, device->ledBitmask)) {
- return true;
- }
+ if (device != nullptr && mapLed(device, led, &sc) == NO_ERROR) {
+ return device->ledBitmask.test(sc);
}
return false;
}
@@ -635,7 +602,7 @@
void EventHub::setLedStateLocked(Device* device, int32_t led, bool on) {
int32_t sc;
- if (device && device->hasValidFd() && mapLed(device, led, &sc) != NAME_NOT_FOUND) {
+ if (device != nullptr && device->hasValidFd() && mapLed(device, led, &sc) != NAME_NOT_FOUND) {
struct input_event ev;
ev.time.tv_sec = 0;
ev.time.tv_usec = 0;
@@ -656,7 +623,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->virtualKeyMap) {
+ if (device != nullptr && device->virtualKeyMap) {
const std::vector<VirtualKeyDefinition> virtualKeys =
device->virtualKeyMap->getVirtualKeys();
outVirtualKeys.insert(outVirtualKeys.end(), virtualKeys.begin(), virtualKeys.end());
@@ -666,7 +633,7 @@
sp<KeyCharacterMap> EventHub::getKeyCharacterMap(int32_t deviceId) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device) {
+ if (device != nullptr) {
return device->getKeyCharacterMap();
}
return nullptr;
@@ -675,7 +642,7 @@
bool EventHub::setKeyboardLayoutOverlay(int32_t deviceId, const sp<KeyCharacterMap>& map) {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device) {
+ if (device != nullptr) {
if (map != device->overlayKeyMap) {
device->overlayKeyMap = map;
device->combinedKeyMap = KeyCharacterMap::combine(device->keyMap.keyCharacterMap, map);
@@ -738,7 +705,7 @@
void EventHub::vibrate(int32_t deviceId, nsecs_t duration) {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd()) {
+ if (device != nullptr && device->hasValidFd()) {
ff_effect effect;
memset(&effect, 0, sizeof(effect));
effect.type = FF_RUMBLE;
@@ -772,7 +739,7 @@
void EventHub::cancelVibrate(int32_t deviceId) {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->hasValidFd()) {
+ if (device != nullptr && device->hasValidFd()) {
if (device->ffEffectPlaying) {
device->ffEffectPlaying = false;
@@ -1089,7 +1056,7 @@
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (!device || !device->videoDevice) {
+ if (device == nullptr || !device->videoDevice) {
return {};
}
return device->videoDevice->consumeFrames();
@@ -1126,17 +1093,6 @@
// ----------------------------------------------------------------------------
-static bool containsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex) {
- const uint8_t* end = array + endIndex;
- array += startIndex;
- while (array != end) {
- if (*(array++) != 0) {
- return true;
- }
- }
- return false;
-}
-
static const int32_t GAMEPAD_KEYCODES[] = {
AKEYCODE_BUTTON_A, AKEYCODE_BUTTON_B, AKEYCODE_BUTTON_C, //
AKEYCODE_BUTTON_X, AKEYCODE_BUTTON_Y, AKEYCODE_BUTTON_Z, //
@@ -1306,31 +1262,27 @@
loadConfigurationLocked(device);
// Figure out the kinds of events the device reports.
- ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(device->keyBitmask)), device->keyBitmask);
- ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(device->absBitmask)), device->absBitmask);
- ioctl(fd, EVIOCGBIT(EV_REL, sizeof(device->relBitmask)), device->relBitmask);
- ioctl(fd, EVIOCGBIT(EV_SW, sizeof(device->swBitmask)), device->swBitmask);
- ioctl(fd, EVIOCGBIT(EV_LED, sizeof(device->ledBitmask)), device->ledBitmask);
- ioctl(fd, EVIOCGBIT(EV_FF, sizeof(device->ffBitmask)), device->ffBitmask);
- ioctl(fd, EVIOCGPROP(sizeof(device->propBitmask)), device->propBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_KEY, 0), device->keyBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_ABS, 0), device->absBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_REL, 0), device->relBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_SW, 0), device->swBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_LED, 0), device->ledBitmask);
+ device->readDeviceBitMask(EVIOCGBIT(EV_FF, 0), device->ffBitmask);
+ device->readDeviceBitMask(EVIOCGPROP(0), device->propBitmask);
// See if this is a keyboard. Ignore everything in the button range except for
// joystick and gamepad buttons which are handled like keyboards for the most part.
bool haveKeyboardKeys =
- containsNonZeroByte(device->keyBitmask, 0, sizeof_bit_array(BTN_MISC)) ||
- containsNonZeroByte(device->keyBitmask, sizeof_bit_array(BTN_WHEEL),
- sizeof_bit_array(KEY_MAX + 1));
- bool haveGamepadButtons = containsNonZeroByte(device->keyBitmask, sizeof_bit_array(BTN_MISC),
- sizeof_bit_array(BTN_MOUSE)) ||
- containsNonZeroByte(device->keyBitmask, sizeof_bit_array(BTN_JOYSTICK),
- sizeof_bit_array(BTN_DIGI));
+ device->keyBitmask.any(0, BTN_MISC) || device->keyBitmask.any(BTN_WHEEL, KEY_MAX + 1);
+ bool haveGamepadButtons = device->keyBitmask.any(BTN_MISC, BTN_MOUSE) ||
+ device->keyBitmask.any(BTN_JOYSTICK, BTN_DIGI);
if (haveKeyboardKeys || haveGamepadButtons) {
device->classes |= INPUT_DEVICE_CLASS_KEYBOARD;
}
// See if this is a cursor device such as a trackball or mouse.
- if (test_bit(BTN_MOUSE, device->keyBitmask) && test_bit(REL_X, device->relBitmask) &&
- test_bit(REL_Y, device->relBitmask)) {
+ if (device->keyBitmask.test(BTN_MOUSE) && device->relBitmask.test(REL_X) &&
+ device->relBitmask.test(REL_Y)) {
device->classes |= INPUT_DEVICE_CLASS_CURSOR;
}
@@ -1345,22 +1297,20 @@
// See if this is a touch pad.
// Is this a new modern multi-touch driver?
- if (test_bit(ABS_MT_POSITION_X, device->absBitmask) &&
- test_bit(ABS_MT_POSITION_Y, device->absBitmask)) {
+ if (device->absBitmask.test(ABS_MT_POSITION_X) && device->absBitmask.test(ABS_MT_POSITION_Y)) {
// Some joysticks such as the PS3 controller report axes that conflict
// with the ABS_MT range. Try to confirm that the device really is
// a touch screen.
- if (test_bit(BTN_TOUCH, device->keyBitmask) || !haveGamepadButtons) {
+ if (device->keyBitmask.test(BTN_TOUCH) || !haveGamepadButtons) {
device->classes |= INPUT_DEVICE_CLASS_TOUCH | INPUT_DEVICE_CLASS_TOUCH_MT;
}
// Is this an old style single-touch driver?
- } else if (test_bit(BTN_TOUCH, device->keyBitmask) && test_bit(ABS_X, device->absBitmask) &&
- test_bit(ABS_Y, device->absBitmask)) {
+ } else if (device->keyBitmask.test(BTN_TOUCH) && device->absBitmask.test(ABS_X) &&
+ device->absBitmask.test(ABS_Y)) {
device->classes |= INPUT_DEVICE_CLASS_TOUCH;
// Is this a BT stylus?
- } else if ((test_bit(ABS_PRESSURE, device->absBitmask) ||
- test_bit(BTN_TOUCH, device->keyBitmask)) &&
- !test_bit(ABS_X, device->absBitmask) && !test_bit(ABS_Y, device->absBitmask)) {
+ } else if ((device->absBitmask.test(ABS_PRESSURE) || device->keyBitmask.test(BTN_TOUCH)) &&
+ !device->absBitmask.test(ABS_X) && !device->absBitmask.test(ABS_Y)) {
device->classes |= INPUT_DEVICE_CLASS_EXTERNAL_STYLUS;
// Keyboard will try to claim some of the buttons but we really want to reserve those so we
// can fuse it with the touch screen data, so just take them back. Note this means an
@@ -1374,7 +1324,7 @@
if (haveGamepadButtons) {
uint32_t assumedClasses = device->classes | INPUT_DEVICE_CLASS_JOYSTICK;
for (int i = 0; i <= ABS_MAX; i++) {
- if (test_bit(i, device->absBitmask) &&
+ if (device->absBitmask.test(i) &&
(getAbsAxisUsage(i, assumedClasses) & INPUT_DEVICE_CLASS_JOYSTICK)) {
device->classes = assumedClasses;
break;
@@ -1384,14 +1334,14 @@
// Check whether this device has switches.
for (int i = 0; i <= SW_MAX; i++) {
- if (test_bit(i, device->swBitmask)) {
+ if (device->swBitmask.test(i)) {
device->classes |= INPUT_DEVICE_CLASS_SWITCH;
break;
}
}
// Check whether this device supports the vibrator.
- if (test_bit(FF_RUMBLE, device->ffBitmask)) {
+ if (device->ffBitmask.test(FF_RUMBLE)) {
device->classes |= INPUT_DEVICE_CLASS_VIBRATOR;
}
@@ -1703,7 +1653,7 @@
const size_t N = scanCodes.size();
for (size_t i = 0; i < N && i <= KEY_MAX; i++) {
int32_t sc = scanCodes[i];
- if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, device->keyBitmask)) {
+ if (sc >= 0 && sc <= KEY_MAX && device->keyBitmask.test(sc)) {
return true;
}
}
@@ -1718,7 +1668,7 @@
int32_t scanCode;
if (device->keyMap.keyLayoutMap->findScanCodeForLed(led, &scanCode) != NAME_NOT_FOUND) {
- if (scanCode >= 0 && scanCode <= LED_MAX && test_bit(scanCode, device->ledBitmask)) {
+ if (scanCode >= 0 && scanCode <= LED_MAX && device->ledBitmask.test(scanCode)) {
*outScanCode = scanCode;
return NO_ERROR;
}
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index ee62c9a..baff6e3 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -17,6 +17,8 @@
#ifndef _RUNTIME_EVENT_HUB_H
#define _RUNTIME_EVENT_HUB_H
+#include <bitset>
+#include <climits>
#include <vector>
#include <input/Input.h>
@@ -38,11 +40,6 @@
#include "TouchVideoDevice.h"
-/* Convenience constants. */
-
-#define BTN_FIRST 0x100 // first button code
-#define BTN_LAST 0x15f // last button code
-
namespace android {
/*
@@ -256,6 +253,76 @@
virtual status_t disableDevice(int32_t deviceId) = 0;
};
+template <std::size_t BITS>
+class BitArray {
+ /* Array element type and vector of element type. */
+ using Element = std::uint32_t;
+ /* Number of bits in each BitArray element. */
+ static constexpr size_t WIDTH = sizeof(Element) * CHAR_BIT;
+ /* Number of elements to represent a bit array of the specified size of bits. */
+ static constexpr size_t COUNT = (BITS + WIDTH - 1) / WIDTH;
+
+public:
+ /* BUFFER type declaration for BitArray */
+ using Buffer = std::array<Element, COUNT>;
+ /* To tell if a bit is set in array, it selects an element from the array, and test
+ * if the relevant bit set.
+ * Note the parameter "bit" is an index to the bit, 0 <= bit < BITS.
+ */
+ inline bool test(size_t bit) const {
+ return (bit < BITS) ? mData[bit / WIDTH].test(bit % WIDTH) : false;
+ }
+ /* Returns total number of bytes needed for the array */
+ inline size_t bytes() { return (BITS + CHAR_BIT - 1) / CHAR_BIT; }
+ /* Returns true if array contains any non-zero bit from the range defined by start and end
+ * bit index [startIndex, endIndex).
+ */
+ bool any(size_t startIndex, size_t endIndex) {
+ if (startIndex >= endIndex || startIndex > BITS || endIndex > BITS + 1) {
+ ALOGE("Invalid start/end index. start = %zu, end = %zu, total bits = %zu", startIndex,
+ endIndex, BITS);
+ return false;
+ }
+ size_t se = startIndex / WIDTH; // Start of element
+ size_t ee = endIndex / WIDTH; // End of element
+ size_t si = startIndex % WIDTH; // Start index in start element
+ size_t ei = endIndex % WIDTH; // End index in end element
+ // Need to check first unaligned bitset for any non zero bit
+ if (si > 0) {
+ size_t nBits = se == ee ? ei - si : WIDTH - si;
+ // Generate the mask of interested bit range
+ Element mask = ((1 << nBits) - 1) << si;
+ if (mData[se++].to_ulong() & mask) {
+ return true;
+ }
+ }
+ // Check whole bitset for any bit set
+ for (; se < ee; se++) {
+ if (mData[se].any()) {
+ return true;
+ }
+ }
+ // Need to check last unaligned bitset for any non zero bit
+ if (ei > 0 && se <= ee) {
+ // Generate the mask of interested bit range
+ Element mask = (1 << ei) - 1;
+ if (mData[se].to_ulong() & mask) {
+ return true;
+ }
+ }
+ return false;
+ }
+ /* Load bit array values from buffer */
+ void loadFromBuffer(const Buffer& buffer) {
+ for (size_t i = 0; i < COUNT; i++) {
+ mData[i] = std::bitset<WIDTH>(buffer[i]);
+ }
+ }
+
+private:
+ std::array<std::bitset<WIDTH>, COUNT> mData;
+};
+
class EventHub : public EventHubInterface {
public:
EventHub();
@@ -332,13 +399,15 @@
uint32_t classes;
- uint8_t keyBitmask[(KEY_MAX + 1) / 8];
- uint8_t absBitmask[(ABS_MAX + 1) / 8];
- uint8_t relBitmask[(REL_MAX + 1) / 8];
- uint8_t swBitmask[(SW_MAX + 1) / 8];
- uint8_t ledBitmask[(LED_MAX + 1) / 8];
- uint8_t ffBitmask[(FF_MAX + 1) / 8];
- uint8_t propBitmask[(INPUT_PROP_MAX + 1) / 8];
+ BitArray<KEY_MAX> keyBitmask;
+ BitArray<KEY_MAX> keyState;
+ BitArray<ABS_MAX> absBitmask;
+ BitArray<REL_MAX> relBitmask;
+ BitArray<SW_MAX> swBitmask;
+ BitArray<SW_MAX> swState;
+ BitArray<LED_MAX> ledBitmask;
+ BitArray<FF_MAX> ffBitmask;
+ BitArray<INPUT_PROP_MAX> propBitmask;
std::string configurationFile;
PropertyMap* configuration;
@@ -371,6 +440,21 @@
}
return keyMap.keyCharacterMap;
}
+
+ template <std::size_t N>
+ status_t readDeviceBitMask(unsigned long ioctlCode, BitArray<N>& bitArray) {
+ if (!hasValidFd()) {
+ return BAD_VALUE;
+ }
+ if ((_IOC_SIZE(ioctlCode) == 0)) {
+ ioctlCode |= _IOC(0, 0, 0, bitArray.bytes());
+ }
+
+ typename BitArray<N>::Buffer buffer;
+ status_t ret = ioctl(fd, ioctlCode, buffer.data());
+ bitArray.loadFromBuffer(buffer);
+ return ret;
+ }
};
status_t openDeviceLocked(const std::string& devicePath);
diff --git a/services/inputflinger/tests/EventHub_test.cpp b/services/inputflinger/tests/EventHub_test.cpp
index 71731b0..ef68a84 100644
--- a/services/inputflinger/tests/EventHub_test.cpp
+++ b/services/inputflinger/tests/EventHub_test.cpp
@@ -199,3 +199,76 @@
lastEventTime = event.when; // Ensure all returned events are monotonic
}
}
+
+// --- BitArrayTest ---
+class BitArrayTest : public testing::Test {
+protected:
+ static constexpr size_t SINGLE_ELE_BITS = 32UL;
+ static constexpr size_t MULTI_ELE_BITS = 256UL;
+
+ virtual void SetUp() override {
+ mBitmaskSingle.loadFromBuffer(mBufferSingle);
+ mBitmaskMulti.loadFromBuffer(mBufferMulti);
+ }
+
+ android::BitArray<SINGLE_ELE_BITS> mBitmaskSingle;
+ android::BitArray<MULTI_ELE_BITS> mBitmaskMulti;
+
+private:
+ const typename android::BitArray<SINGLE_ELE_BITS>::Buffer mBufferSingle = {
+ 0x800F0F0FUL // bit 0 - 31
+ };
+ const typename android::BitArray<MULTI_ELE_BITS>::Buffer mBufferMulti = {
+ 0xFFFFFFFFUL, // bit 0 - 31
+ 0x01000001UL, // bit 32 - 63
+ 0x00000000UL, // bit 64 - 95
+ 0x80000000UL, // bit 96 - 127
+ 0x00000000UL, // bit 128 - 159
+ 0x00000000UL, // bit 160 - 191
+ 0x80000008UL, // bit 192 - 223
+ 0x00000000UL, // bit 224 - 255
+ };
+};
+
+TEST_F(BitArrayTest, SetBit) {
+ ASSERT_TRUE(mBitmaskSingle.test(0));
+ ASSERT_TRUE(mBitmaskSingle.test(31));
+ ASSERT_FALSE(mBitmaskSingle.test(7));
+
+ ASSERT_TRUE(mBitmaskMulti.test(32));
+ ASSERT_TRUE(mBitmaskMulti.test(56));
+ ASSERT_FALSE(mBitmaskMulti.test(192));
+ ASSERT_TRUE(mBitmaskMulti.test(223));
+ ASSERT_FALSE(mBitmaskMulti.test(255));
+}
+
+TEST_F(BitArrayTest, AnyBit) {
+ ASSERT_TRUE(mBitmaskSingle.any(31, 32));
+ ASSERT_FALSE(mBitmaskSingle.any(12, 16));
+
+ ASSERT_TRUE(mBitmaskMulti.any(31, 32));
+ ASSERT_FALSE(mBitmaskMulti.any(33, 33));
+ ASSERT_TRUE(mBitmaskMulti.any(32, 55));
+ ASSERT_TRUE(mBitmaskMulti.any(33, 57));
+ ASSERT_FALSE(mBitmaskMulti.any(33, 55));
+ ASSERT_FALSE(mBitmaskMulti.any(130, 190));
+
+ ASSERT_FALSE(mBitmaskMulti.any(128, 195));
+ ASSERT_TRUE(mBitmaskMulti.any(128, 196));
+ ASSERT_TRUE(mBitmaskMulti.any(128, 224));
+ ASSERT_FALSE(mBitmaskMulti.any(255, 256));
+}
+
+TEST_F(BitArrayTest, SetBit_InvalidBitIndex) {
+ ASSERT_FALSE(mBitmaskSingle.test(32));
+ ASSERT_FALSE(mBitmaskMulti.test(256));
+}
+
+TEST_F(BitArrayTest, AnyBit_InvalidBitIndex) {
+ ASSERT_FALSE(mBitmaskSingle.any(32, 32));
+ ASSERT_FALSE(mBitmaskSingle.any(33, 34));
+
+ ASSERT_FALSE(mBitmaskMulti.any(256, 256));
+ ASSERT_FALSE(mBitmaskMulti.any(257, 258));
+ ASSERT_FALSE(mBitmaskMulti.any(0, 0));
+}