Commit 193fd6d1 authored by jan.koester's avatar jan.koester
Browse files

deb

parent 4e29a7cd

debian/changelog

+8 −0
Original line number Diff line number Diff line 
mediadb (20260424+78) unstable; urgency=medium



  * Fix: guard PrefetchBuffer future .wait() calls with .valid() check.

    Prevents std::future_error "No associated state" crash after .get()

    consumed the future in read(), then drop/seek loops called .wait().



 -- Jan Koester <jan.koester@tuxist.de>  Thu, 24 Apr 2026 00:00:00 +0200



mediadb (20260424+77) unstable; urgency=medium



  * Performance: reduce prefetch block size 256KB→64KB, look-ahead 2MB→256KB,

src/preview.cpp

+3 −3
Original line number Diff line number Diff line
@@ -123,7 +123,7 @@ struct PrefetchBuffer { 


        // drop blocks entirely before pos (after a seek)

        while (!ring.empty() && ring.front().offset + ring.front().length <= pos) {

            ring.front().fut.wait();

            if (ring.front().fut.valid()) ring.front().fut.wait();

            ring.pop_front();

        }
@@ -168,14 +168,14 @@ struct PrefetchBuffer { 
            auto& b = ring.back();

            if (b.offset <= new_pos && new_pos < b.offset + b.length) break;

            if (b.offset > new_pos) {

                b.fut.wait();

                if (b.fut.valid()) b.fut.wait();

                ring.pop_back();

            } else {

                break;

            }

        }

        while (!ring.empty() && ring.front().offset + ring.front().length <= new_pos) {

            ring.front().fut.wait();

            if (ring.front().fut.valid()) ring.front().fut.wait();

            ring.pop_front();

        }

        pos = new_pos;