wait_for_snapshot_completion()

bool MayaFlux::Buffers::wait_for_snapshot_completion	(	const std::shared_ptr< Nodes::Node > &	node,
		uint64_t	active_context_id,
		int	max_spins = MAX_SPINS
	)

Wait for an active snapshot context to complete using exponential backoff.

Returns

true if completed, false if timeout

Definition at line 98 of file BufferUtils.cpp.

{
    int spin_count = 0;
 
    while (node->is_in_snapshot_context(active_context_id) && spin_count < max_spins) {
        if (spin_count < 10) {
            for (int i = 0; i < (1 << spin_count); ++i) {
                MF_PAUSE_INSTRUCTION();
            }
        } else {
            std::this_thread::yield();
        }
        ++spin_count;
    }
 
    if (spin_count >= max_spins) {
        MF_RT_ERROR(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "Timeout waiting for node snapshot to complete. "
            "Possible deadlock or very long processing time.");
        return false;
    }
 
    return true;
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, and MF_RT_ERROR.

Referenced by extract_multiple_samples(), extract_single_sample(), and update_buffer_with_node_data().

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