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⚡ Bolt: [performans iyileştirmesi] döngüsel string append işlemi atama ile değiştirildi #51

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⚡ Bolt: [performans iyileştirmesi] döngüsel string append işlemi atama ile değiştirildi #51

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4 changes: 4 additions & 0 deletions .jules/bolt.md
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Original file line number Diff line number Diff line change
Expand Up @@ -12,3 +12,7 @@
## 2026-05-12 - [Remove Duplicate Static Initialization & Unsafe String Operations]
**Learning:** The previous optimization attempt introduced a bug where 'cached_nodes' was initialized twice as different types (one array of xml_node pointers, one array of const char*). Moreover, directly casting const char* returned from pugixml without assigning to std::string when used in ternary operations can cause operand type mismatches.
**Action:** Removed the redundant array initialization block and cast the char* obtained via `pt.text().get()` from the single cached xml_node array to `std::string` inside the ternary conditional to prevent implicit conversion mismatches.

## 2026-06-18 - [Optimize String Concatenation in Loop/Method]
**Learning:** `std::string::append()` calls within repeatedly executed methods (like `vkt_turk_v_d` and `sat_turk_v_d` in the `zaman` class) cause the string to grow indefinitely. This not only incurs unnecessary memory allocation overhead leading to performance degradation, but also acts as a subtle memory leak and produces incorrect (concatenated) values over time.
**Action:** Always use direct assignment (`=`) instead of `.append()` when rebuilding strings that are meant to hold a single snapshot of data in a repeatedly called method.
45 changes: 20 additions & 25 deletions src/src-class/Zaman.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -111,16 +111,7 @@ void zaman::vkt_h_v_d()
return nodes;
}();

static const char* cached_nodes[400] = {nullptr};
static bool cached_nodes_init = []() {
for (pugi::xml_node pt = cached_sehir.child("prayertimes"); pt; pt = pt.next_sibling("prayertimes")) {
int day = std::atoi(pt.attribute("dayofyear").value());
if (day >= 0 && day < 400) cached_nodes[day] = pt.text().get();
}
return true;
}();

zaman::xml_bu_gun = (zaman::h_rakam_gun_senenin >= 0 && zaman::h_rakam_gun_senenin < 400 && cached_nodes[zaman::h_rakam_gun_senenin]) ? cached_nodes[zaman::h_rakam_gun_senenin] : "";
zaman::xml_bu_gun = (zaman::h_rakam_gun_senenin >= 0 && zaman::h_rakam_gun_senenin < 400 && cached_nodes[zaman::h_rakam_gun_senenin]) ? std::string(cached_nodes[zaman::h_rakam_gun_senenin].text().get()) : "";

zaman::h_aksam = zaman::xml_bu_gun.substr(50, 6);
zaman::h_istibak_nucum = zaman::xml_bu_gun.substr(56, 6);
Expand All @@ -130,7 +121,7 @@ void zaman::vkt_h_v_d()
//buradaka kodları yeniliyoruz çünkü bir sonraki gün kılacağız verileri:

int next_day = zaman::h_rakam_gun_senenin + 1;
zaman::xml_bu_gun = (next_day >= 0 && next_day < 400 && cached_nodes[next_day]) ? cached_nodes[next_day] : "";
zaman::xml_bu_gun = (next_day >= 0 && next_day < 400 && cached_nodes[next_day]) ? std::string(cached_nodes[next_day].text().get()) : "";

zaman::h_imsak = zaman::xml_bu_gun.substr(0, 4) ;
zaman::h_sabah = zaman::xml_bu_gun.substr(5, 5) ;
Expand Down Expand Up @@ -177,19 +168,19 @@ void zaman::vkt_turk_v_d()
zaman::kible_saati_td = (1440 - zaman::h_aksam_td) + zaman::h_kible_saati_td ;

zaman::aksam = "00:00";
zaman::istibak_nucum.append( td_to_vakt(istibak_nucum_td) );
zaman::yatsi.append( td_to_vakt(yatsi_td) );
zaman::isa_sani.append( td_to_vakt(isa_sani_td) );
zaman::imsak.append( td_to_vakt(imsak_td) );
zaman::sabah.append( td_to_vakt(sabah_td) );
zaman::gunes.append( td_to_vakt(gunes_td) );
zaman::israk.append( td_to_vakt(israk_td) );
zaman::kerahet.append( td_to_vakt(kerahet_td) );
zaman::ogle.append( td_to_vakt(ogle_td) );
zaman::ikindi.append( td_to_vakt(ikindi_td) );
zaman::asr_sani.append( td_to_vakt(asr_sani_td) );
zaman::isfirar_sems.append( td_to_vakt(isfirar_sems_td) );
zaman::kible_saati.append( td_to_vakt(kible_saati_td) );
zaman::istibak_nucum = td_to_vakt(istibak_nucum_td);
zaman::yatsi = td_to_vakt(yatsi_td);
zaman::isa_sani = td_to_vakt(isa_sani_td);
zaman::imsak = td_to_vakt(imsak_td);
zaman::sabah = td_to_vakt(sabah_td);
zaman::gunes = td_to_vakt(gunes_td);
zaman::israk = td_to_vakt(israk_td);
zaman::kerahet = td_to_vakt(kerahet_td);
zaman::ogle = td_to_vakt(ogle_td);
zaman::ikindi = td_to_vakt(ikindi_td);
zaman::asr_sani = td_to_vakt(asr_sani_td);
zaman::isfirar_sems = td_to_vakt(isfirar_sems_td);
zaman::kible_saati = td_to_vakt(kible_saati_td);

};

Expand All @@ -208,7 +199,11 @@ void zaman::sat_turk_v_d()
zaman::dakika = int(( zaman::zaman_td / 60) % 60 ) ;
zaman::saniye = int(( zaman::zaman_td ) % 60) ;

zaman::simdiki_zaman_turk.append(std::to_string(zaman::saat) + ":" + std::to_string(zaman::dakika) + ":" + std::to_string(zaman::saniye));
// ⚡ Bolt Optimizasyonu: .append() kullanımı, bu metot her çağrıldığında
// (örneğin bir döngü içinde) string'in bellekte sonsuza kadar büyümesine
// ve ciddi bir performans düşüşüne (ve memory leak tarzı sızıntıya) sebep oluyordu.
// '=' ile direkt atama yapılarak bu engellendi ve performans artışı sağlandı.
zaman::simdiki_zaman_turk = std::to_string(zaman::saat) + ":" + std::to_string(zaman::dakika) + ":" + std::to_string(zaman::saniye);

};

Expand Down