Remove unnecessary globals.
Change-Id: I76a042432aede08ceaf250319cf5eeb25d601150
diff --git a/ui.cpp b/ui.cpp
index dbe5c51..dca325f 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -39,11 +39,6 @@
#define UI_WAIT_KEY_TIMEOUT_SEC 120
-// There's only (at most) one of these objects, and global callbacks
-// (for pthread_create, and the input event system) need to find it,
-// so use a global variable.
-static RecoveryUI* self = NULL;
-
RecoveryUI::RecoveryUI()
: key_queue_len(0),
key_last_down(-1),
@@ -55,9 +50,8 @@
has_power_key(false),
has_up_key(false),
has_down_key(false) {
- pthread_mutex_init(&key_queue_mutex, NULL);
- pthread_cond_init(&key_queue_cond, NULL);
- self = this;
+ pthread_mutex_init(&key_queue_mutex, nullptr);
+ pthread_cond_init(&key_queue_cond, nullptr);
memset(key_pressed, 0, sizeof(key_pressed));
}
@@ -71,16 +65,29 @@
}
}
-void RecoveryUI::Init() {
- ev_init(input_callback, NULL);
-
- using namespace std::placeholders;
- ev_iterate_available_keys(std::bind(&RecoveryUI::OnKeyDetected, this, _1));
-
- pthread_create(&input_t, NULL, input_thread, NULL);
+int RecoveryUI::InputCallback(int fd, uint32_t epevents, void* data) {
+ return reinterpret_cast<RecoveryUI*>(data)->OnInputEvent(fd, epevents);
}
-int RecoveryUI::input_callback(int fd, uint32_t epevents, void* data) {
+// Reads input events, handles special hot keys, and adds to the key queue.
+static void* InputThreadLoop(void*) {
+ while (true) {
+ if (!ev_wait(-1)) {
+ ev_dispatch();
+ }
+ }
+ return nullptr;
+}
+
+void RecoveryUI::Init() {
+ ev_init(InputCallback, this);
+
+ ev_iterate_available_keys(std::bind(&RecoveryUI::OnKeyDetected, this, std::placeholders::_1));
+
+ pthread_create(&input_thread_, nullptr, InputThreadLoop, nullptr);
+}
+
+int RecoveryUI::OnInputEvent(int fd, uint32_t epevents) {
struct input_event ev;
if (ev_get_input(fd, epevents, &ev) == -1) {
return -1;
@@ -94,23 +101,23 @@
// the trackball. When it exceeds a threshold
// (positive or negative), fake an up/down
// key event.
- self->rel_sum += ev.value;
- if (self->rel_sum > 3) {
- self->process_key(KEY_DOWN, 1); // press down key
- self->process_key(KEY_DOWN, 0); // and release it
- self->rel_sum = 0;
- } else if (self->rel_sum < -3) {
- self->process_key(KEY_UP, 1); // press up key
- self->process_key(KEY_UP, 0); // and release it
- self->rel_sum = 0;
+ rel_sum += ev.value;
+ if (rel_sum > 3) {
+ ProcessKey(KEY_DOWN, 1); // press down key
+ ProcessKey(KEY_DOWN, 0); // and release it
+ rel_sum = 0;
+ } else if (rel_sum < -3) {
+ ProcessKey(KEY_UP, 1); // press up key
+ ProcessKey(KEY_UP, 0); // and release it
+ rel_sum = 0;
}
}
} else {
- self->rel_sum = 0;
+ rel_sum = 0;
}
if (ev.type == EV_KEY && ev.code <= KEY_MAX) {
- self->process_key(ev.code, ev.value);
+ ProcessKey(ev.code, ev.value);
}
return 0;
@@ -128,7 +135,7 @@
// a key is registered.
//
// updown == 1 for key down events; 0 for key up events
-void RecoveryUI::process_key(int key_code, int updown) {
+void RecoveryUI::ProcessKey(int key_code, int updown) {
bool register_key = false;
bool long_press = false;
bool reboot_enabled;
@@ -139,13 +146,13 @@
++key_down_count;
key_last_down = key_code;
key_long_press = false;
- pthread_t th;
key_timer_t* info = new key_timer_t;
info->ui = this;
info->key_code = key_code;
info->count = key_down_count;
- pthread_create(&th, NULL, &RecoveryUI::time_key_helper, info);
- pthread_detach(th);
+ pthread_t thread;
+ pthread_create(&thread, nullptr, &RecoveryUI::time_key_helper, info);
+ pthread_detach(thread);
} else {
if (key_last_down == key_code) {
long_press = key_long_press;
@@ -182,7 +189,7 @@
key_timer_t* info = (key_timer_t*) cookie;
info->ui->time_key(info->key_code, info->count);
delete info;
- return NULL;
+ return nullptr;
}
void RecoveryUI::time_key(int key_code, int count) {
@@ -206,17 +213,6 @@
pthread_mutex_unlock(&key_queue_mutex);
}
-
-// Reads input events, handles special hot keys, and adds to the key queue.
-void* RecoveryUI::input_thread(void* cookie) {
- while (true) {
- if (!ev_wait(-1)) {
- ev_dispatch();
- }
- }
- return NULL;
-}
-
int RecoveryUI::WaitKey() {
pthread_mutex_lock(&key_queue_mutex);
@@ -225,7 +221,7 @@
do {
struct timeval now;
struct timespec timeout;
- gettimeofday(&now, NULL);
+ gettimeofday(&now, nullptr);
timeout.tv_sec = now.tv_sec;
timeout.tv_nsec = now.tv_usec * 1000;
timeout.tv_sec += UI_WAIT_KEY_TIMEOUT_SEC;
@@ -234,7 +230,7 @@
while (key_queue_len == 0 && rc != ETIMEDOUT) {
rc = pthread_cond_timedwait(&key_queue_cond, &key_queue_mutex, &timeout);
}
- } while (usb_connected() && key_queue_len == 0);
+ } while (IsUsbConnected() && key_queue_len == 0);
int key = -1;
if (key_queue_len > 0) {
@@ -245,8 +241,7 @@
return key;
}
-// Return true if USB is connected.
-bool RecoveryUI::usb_connected() {
+bool RecoveryUI::IsUsbConnected() {
int fd = open("/sys/class/android_usb/android0/state", O_RDONLY);
if (fd < 0) {
printf("failed to open /sys/class/android_usb/android0/state: %s\n",
@@ -255,7 +250,7 @@
}
char buf;
- /* USB is connected if android_usb state is CONNECTED or CONFIGURED */
+ // USB is connected if android_usb state is CONNECTED or CONFIGURED.
int connected = (read(fd, &buf, 1) == 1) && (buf == 'C');
if (close(fd) < 0) {
printf("failed to close /sys/class/android_usb/android0/state: %s\n",