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core: reserve vector sizes as much as we can (#9118)

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avoid reallocations as much as possible with a few edge cases where the
reservation overshoots a tiny bit. but a few bytes of memory short term
is better used then the overhead of potential reallocation.
This commit is contained in:
Tom Englund
2025-01-19 10:38:42 +00:00
committed by GitHub
parent f56153a9c1
commit 4da9b7cc5b
11 changed files with 45 additions and 12 deletions
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6
src/Compositor.cpp
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@@ -2785,11 +2785,9 @@ PHLWINDOW CCompositor::getForceFocus() {
void CCompositor::arrangeMonitors() {
static auto* const PXWLFORCESCALEZERO = (Hyprlang::INT* const*)g_pConfigManager->getConfigValuePtr("xwayland:force_zero_scaling");
std::vector<PHLMONITOR> toArrange;
std::vector<PHLMONITOR> toArrange(m_vMonitors.begin(), m_vMonitors.end());
std::vector<PHLMONITOR> arranged;
for (auto const& m : m_vMonitors)
toArrange.push_back(m);
arranged.reserve(toArrange.size());
Debug::log(LOG, "arrangeMonitors: {} to arrange", toArrange.size());