| 27,13 → 27,14 |
|---|
| */ |
| |
| /** @addtogroup kbdgen |
| * @brief HelenOS generic uspace keyboard handler. |
| * @ingroup kbd |
| * @brief HelenOS generic uspace keyboard handler. |
| * @ingroup kbd |
| * @{ |
| */ |
| */ |
| /** @file |
| */ |
| #include <key_buffer.h> |
| |
| #include <keybuffer.h> |
| #include <futex.h> |
| |
| atomic_t keybuffer_futex = FUTEX_INITIALIZER; |
| 58,19 → 59,24 |
|---|
| } |
| |
| /** Get free space in buffer. |
| * This function is useful for processing some scancodes that are translated |
| * |
| * This function is useful for processing some scancodes that are translated |
| * to more than one character. |
| * |
| * @return empty buffer space |
| * |
| */ |
| int keybuffer_available(keybuffer_t *keybuffer) |
| size_t keybuffer_available(keybuffer_t *keybuffer) |
| { |
| return KEYBUFFER_SIZE - keybuffer->items; |
| } |
| |
| /** |
| * |
| * @return nonzero, if buffer is not empty. |
| * |
| */ |
| int keybuffer_empty(keybuffer_t *keybuffer) |
| bool keybuffer_empty(keybuffer_t *keybuffer) |
| { |
| return (keybuffer->items == 0); |
| } |
| 79,39 → 85,48 |
|---|
| * |
| * If the buffer is full, the event is ignored. |
| * |
| * @param keybuffer The keybuffer. |
| * @param ev The event to push. |
| * @param keybuffer The keybuffer. |
| * @param ev The event to push. |
| * |
| */ |
| void keybuffer_push(keybuffer_t *keybuffer, const kbd_event_t *ev) |
| void keybuffer_push(keybuffer_t *keybuffer, const console_event_t *ev) |
| { |
| futex_down(&keybuffer_futex); |
| |
| if (keybuffer->items < KEYBUFFER_SIZE) { |
| keybuffer->fifo[keybuffer->tail] = *ev; |
| keybuffer->tail = (keybuffer->tail + 1) % KEYBUFFER_SIZE; |
| keybuffer->items++; |
| } |
| |
| futex_up(&keybuffer_futex); |
| } |
| |
| /** Pop event from buffer. |
| * |
| * @param edst Pointer to where the event should be saved. |
| * @return Zero on empty buffer, nonzero otherwise. |
| * @param edst Pointer to where the event should be saved. |
| * |
| * @return True if an event was popped. |
| * |
| */ |
| int keybuffer_pop(keybuffer_t *keybuffer, kbd_event_t *edst) |
| bool keybuffer_pop(keybuffer_t *keybuffer, console_event_t *edst) |
| { |
| futex_down(&keybuffer_futex); |
| |
| if (keybuffer->items > 0) { |
| keybuffer->items--; |
| *edst = (keybuffer->fifo[keybuffer->head]) ; |
| *edst = (keybuffer->fifo[keybuffer->head]); |
| keybuffer->head = (keybuffer->head + 1) % KEYBUFFER_SIZE; |
| futex_up(&keybuffer_futex); |
| return 1; |
| |
| return true; |
| } |
| |
| futex_up(&keybuffer_futex); |
| return 0; |
| |
| return false; |
| } |
| |
| /** |
| * @} |
| */ |
| */ |