Expose the first presented output timestamp for startup timing

Changed

 src/c/host.c | 3 ++-
 src/c/lock.h | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

Diff

@@ -124,7 +124,7 @@ static struct {

124

bool terminal_delivered;

125

atomic_int state;

126

atomic_uint_fast64_t frames, objects, overflow, rejected, bytes, pixel_nodes, pixel_drops, saved_trees, snapshots;

−127

atomic_uint_fast64_t input_expired,motion_coalesced,timer_wakes;

+127

atomic_uint_fast64_t input_expired,motion_coalesced,timer_wakes,first_present_ms;

128

atomic_bool input_resync;

129

char socket[64],requested_socket[64];

130

int64_t protocols,request_deadline;

@@ -2564,6 +2564,7 @@ uint64_t wm_stat(int which) {

2564

case 10: return atomic_load(&bridge.input_expired);

2565

case 11: return atomic_load(&bridge.motion_coalesced);

2566

case 12: return atomic_load(&bridge.timer_wakes);

+2567

case 13: return atomic_load(&bridge.first_present_ms);

2568

default: return UINT64_MAX;

2569

}

2570

}

@@ -44,6 +44,8 @@ static void lock_ack(struct server *s) {

static void lock_present(struct wl_listener *listener,void *data) {

struct output *o=wl_container_of(listener,o,lock_present);

struct wlr_output_event_present *e=data;

+47

uint64_t unset=0;

+48

if(e->presented) atomic_compare_exchange_strong(&bridge.first_present_ms,&unset,now_ms());

if(trace_output_present(&o->trace,e->commit_seq,o->id,e->presented,&e->when)) wake(bridge.event_fd);

layer_output_present(o, e);

if(!o->server->lock_state || !e->presented || !o->lock_armed ||