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togglerecord: stop copying settings

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It's racy as the settings values can be changed between the copy and
reading them.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1935>
This commit is contained in:
Guillaume Desmottes 2024-11-29 09:48:09 +01:00 committed by GStreamer Marge Bot
parent 5f007ed7ee
commit 3f5396af58
1 changed files with 12 additions and 7 deletions
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19
utils/togglerecord/src/togglerecord/imp.rs
View file

@ -32,7 +32,7 @@ const DEFAULT_LIVE: bool = false;
// - stream.state with stream coming from either self.state.pads or self.state.other_streams
// - self.settings
#[derive(Debug, Clone, Copy)]
#[derive(Debug)]
struct Settings {
record: bool,
live: bool,
@ -372,7 +372,6 @@ impl ToggleRecord {
fn block_if_upstream_not_live(
&self,
pad: &gst::Pad,
mut settings: Settings,
stream: &Stream, // main stream
upstream_live: bool,
) -> Result<bool, gst::FlowError> {
@ -380,6 +379,7 @@ impl ToggleRecord {
let clock = self.obj().clock();
let mut rec_state = self.state.lock();
let mut state = stream.state.lock();
let mut settings = self.settings.lock();
if rec_state.time_start_block.is_none() {
rec_state.time_start_block = clock
@ -389,9 +389,10 @@ impl ToggleRecord {
while !settings.record && !state.flushing {
gst::debug!(CAT, obj = pad, "Waiting for record=true");
drop(state);
drop(settings);
self.main_stream_cond.wait(&mut rec_state);
state = stream.state.lock();
settings = *self.settings.lock();
settings = self.settings.lock();
}
if state.flushing {
gst::debug!(CAT, obj = pad, "Flushing");
@ -494,7 +495,7 @@ impl ToggleRecord {
dts_or_pts_end,
);
let settings = *self.settings.lock();
let settings = self.settings.lock();
// First check if we need to block for non-live input
@ -514,6 +515,7 @@ impl ToggleRecord {
}
_ => false,
};
drop(settings);
match rec_state.recording_state {
RecordingState::Recording => {
@ -601,7 +603,7 @@ impl ToggleRecord {
drop(state);
drop(rec_state);
let ret = self.block_if_upstream_not_live(pad, settings, stream, upstream_live)?;
let ret = self.block_if_upstream_not_live(pad, stream, upstream_live)?;
self.obj().notify("recording");
if ret {
@ -616,7 +618,7 @@ impl ToggleRecord {
}
drop(rec_state);
drop(state);
if self.block_if_upstream_not_live(pad, settings, stream, upstream_live)? {
if self.block_if_upstream_not_live(pad, stream, upstream_live)? {
Ok(HandleResult::Pass(data))
} else {
Ok(HandleResult::Drop)
@ -650,6 +652,7 @@ impl ToggleRecord {
// Remember the time when we started: now!
rec_state.last_recording_start = current_running_time;
// We made sure a few lines above, but let's be sure again
let settings = self.settings.lock();
if !settings.live || upstream_live {
rec_state.running_time_offset =
0 - current_running_time.map_or(0, |current_running_time| {
@ -658,6 +661,7 @@ impl ToggleRecord {
.nseconds()
}) as i64
};
drop(settings);
gst::debug!(
CAT,
obj = pad,
@ -2035,6 +2039,7 @@ impl ObjectImpl for ToggleRecord {
);
settings.record = record;
drop(settings);
self.main_stream_cond.notify_all();
}
"is-live" => {
@ -2166,7 +2171,7 @@ impl ElementImpl for ToggleRecord {
*state = StreamState::default();
}
let settings = *self.settings.lock();
let settings = self.settings.lock();
rec_state.live = settings.live;
}
gst::StateChange::PausedToReady => {