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suspension queue resume process with value

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This commit is contained in:
Kamil Kowalczyk
2026-04-28 00:12:41 +02:00
parent 90084652fa
commit 71522e4df5
8 changed files with 28 additions and 29 deletions
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28
kernel/device/ps2/ps2_kb.c
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@@ -154,17 +154,19 @@ static void ps2kb_irq(void* arg, void* regs, bool user, struct reschedule_ctx* r
if (keycode <= 0 || keycode == 0xFA)
return;
ringbuffer_push(uint8_t, &ps2kb_ringbuffer, (uint8_t)keycode);
struct list_node_link* node = ps2kb_sq.proc_list;
if (node != NULL) {
struct proc_sq_entry* sq_entry = list_entry(node, struct proc_sq_entry, sq_link);
struct proc* resumed_proc = sq_entry->proc;
proc_sq_resume(resumed_proc, sq_entry, rctx);
*(uint8_t*)sq_entry->udata = (uint8_t)keycode;
proc_sq_resume(resumed_proc, sq_entry, rctx, ST_OK);
return;
}
ringbuffer_push(uint8_t, &ps2kb_ringbuffer, (uint8_t)keycode);
}
DEFINE_DEVICE_OP(ps2kb_read_key) {
@@ -173,25 +175,13 @@ DEFINE_DEVICE_OP(ps2kb_read_key) {
if (chbuf == NULL)
return -ST_BAD_ADDRESS_SPACE;
size_t prev_count = ps2kb_ringbuffer.count;
ringbuffer_pop(uint8_t, &ps2kb_ringbuffer, chbuf);
size_t new_count = ps2kb_ringbuffer.count;
/* didn't pop anything */
if (prev_count == new_count) {
struct list_node_link* node = ps2kb_sq.proc_list;
if (node != NULL) {
return -ST_PERMISSION_ERROR;
}
proc_sq_suspend(proc, &ps2kb_sq, rctx, NULL, NULL);
if (ps2kb_ringbuffer.count == 0) {
proc_sq_suspend(proc, &ps2kb_sq, rctx, chbuf, NULL);
return ST_OK;
}
ringbuffer_pop(uint8_t, &ps2kb_ringbuffer, chbuf);
return ST_OK;
}