nsecs_t Fence::getSignalTime() const {
if (mFenceFd == -1) {
return -1;
}
struct sync_fence_info_data* finfo = sync_fence_info(mFenceFd);
if (finfo == NULL) {
ALOGE("sync_fence_info returned NULL for fd %d", mFenceFd);
return -1;
}
if (finfo->status != 1) {
sync_fence_info_free(finfo);
return INT64_MAX;
}
struct sync_pt_info* pinfo = NULL;
uint64_t timestamp = 0;
while ((pinfo = sync_pt_info(finfo, pinfo)) != NULL) {
if (pinfo->timestamp_ns > timestamp) {
timestamp = pinfo->timestamp_ns;
}
}
sync_fence_info_free(finfo);
return nsecs_t(timestamp);
}
void Fence::dump(int fd) {
if (-1 == fd) return;
struct sync_fence_info_data *info = sync_fence_info(fd);
if (info) {
struct sync_pt_info *pt_info = NULL;
// status: active(0) signaled(1) error(<0)
XLOGI("fence(%s) status(%d)", info->name, info->status);
// iterate active/error sync points
while ((pt_info = sync_pt_info(info, pt_info))) {
if (NULL != pt_info && pt_info->status <= 0) {
int ts_sec = pt_info->timestamp_ns / 1000000000LL;
int ts_usec = (pt_info->timestamp_ns % 1000000000LL) / 1000LL;
String8 msg = String8::format(
"sync point: timeline(%s) drv(%s) status(%d) sync_drv(%u) timestamp(%d.%06d)",
pt_info->obj_name, pt_info->driver_name, pt_info->status,
*(uint32_t *)pt_info->driver_data, ts_sec, ts_usec);
XLOGI(msg.string());
}
}
sync_fence_info_free(info);
}
}
