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client: move LGMP session probing off the event thread

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LGMP session validation may wait 500 ms for the shared-memory heartbeat
to advance. Run it on a worker so Wayland input remains responsive while
preserving stale-data detection.
This commit is contained in:
Geoffrey McRae
2026-07-18 01:30:15 +10:00
parent 1187800259
commit b69dd4d897
1 changed files with 49 additions and 2 deletions
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51
client/src/main.c
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@@ -1196,6 +1196,25 @@ static MsgBoxHandle showSpiceInputHelp(void)
"through SPICE if you press the capture key.");
}
struct LGMPClientSessionProbe
{
PLGMPClient client;
uint32_t udataSize;
uint8_t * udata;
uint32_t remoteVersion;
LGMP_STATUS status;
atomic_bool done;
};
static int lgmpClientSessionProbe(void * opaque)
{
struct LGMPClientSessionProbe * probe = opaque;
probe->status = lgmpClientSessionInit(probe->client, &probe->udataSize,
&probe->udata, NULL, &probe->remoteVersion);
atomic_store_explicit(&probe->done, true, memory_order_release);
return 0;
}
static int lg_run(void)
{
g_cursor.sens = g_params.mouseSens;
@@ -1495,8 +1514,36 @@ restart:
initialSpiceEnable = 0;
}
status = lgmpClientSessionInit(g_state.lgmp, &udataSize, (uint8_t **)&udata,
NULL, &remoteVersion);
struct LGMPClientSessionProbe probe =
{
.client = g_state.lgmp,
.done = false,
};
LGThread * probeThread;
if (!lgCreateThread("lgmpSession", lgmpClientSessionProbe, &probe,
&probeThread))
{
DEBUG_ERROR("Failed to create LGMP session probe thread");
return -1;
}
while (g_state.state == APP_STATE_RUNNING &&
!atomic_load_explicit(&probe.done, memory_order_acquire))
g_state.ds->wait(100);
if (!lgJoinThread(probeThread, NULL))
{
DEBUG_ERROR("Failed to join LGMP session probe thread");
return -1;
}
if (g_state.state != APP_STATE_RUNNING)
return -1;
status = probe.status;
udataSize = probe.udataSize;
udata = (KVMFR *)probe.udata;
remoteVersion = probe.remoteVersion;
switch(status)
{
case LGMP_OK: