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Drop packets from the mouse if the client isn't reading fast enough

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This commit is contained in:
Kevin Lange 2012-02-02 20:37:50 -06:00
parent 90392d47e6
commit aac1d78e35
2 changed files with 10 additions and 7 deletions
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11
kernel/devices/mouse.c
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@ -9,6 +9,9 @@
uint8_t mouse_cycle = 0;
int8_t mouse_byte[3];
#define PACKETS_IN_PIPE 64
#define DISCARD_POINT 32
fs_node_t * mouse_pipe;
void mouse_handler(struct regs *r) {
@ -35,6 +38,12 @@ void mouse_handler(struct regs *r) {
packet.buttons |= RIGHT_CLICK;
}
mouse_cycle = 0;
mouse_device_packet_t bitbucket;
while (pipe_size(mouse_pipe) > (DISCARD_POINT * sizeof(packet))) {
kprintf("[debug] Discarding a packet...\n");
read_fs(mouse_pipe, 0, sizeof(packet), (uint8_t *)&bitbucket);
}
write_fs(mouse_pipe, 0, sizeof(packet), (uint8_t *)&packet);
break;
}
@ -76,7 +85,7 @@ void mouse_install() {
LOG(INFO, "Initializing mouse cursor driver");
uint8_t status;
IRQ_OFF;
mouse_pipe = make_pipe(sizeof(mouse_device_packet_t) * 40);
mouse_pipe = make_pipe(sizeof(mouse_device_packet_t) * PACKETS_IN_PIPE);
mouse_wait(1);
outportb(0x64,0xA8);
mouse_wait(1);

6
userspace/terminal.c
View File

@ -2639,13 +2639,7 @@ static void cell_redraw_inverted(uint16_t x, uint16_t y) {
void draw_cursor() {
if (!cursor_on) return;
timer_tick = 0;
#if 0
for (uint32_t x = 0; x < char_width; ++x) {
term_set_point(csr_x * char_width + x, csr_y * char_height + (char_height - 1), term_colors[current_fg]);
}
#else
cell_redraw_inverted(csr_x, csr_y);
#endif
}
void term_redraw_all() {