DanSandClaude Opus 5.5
a69380817e
The open chat thread called std::localtime at least twice per message per frame (two day keys for grouping), and more for day separators and time labels. On glibc every call re-checks the timezone with a stat of /etc/localtime. The chat time helpers now use util::localTime() from the new util/local_time.h: localtime_r (localtime_s on Windows), with no per-call timezone check and no shared static result buffer. glibc's localtime_r reads the timezone only once, so local_time.h also adds util::refreshTimezone() (tzset) for caches to call when they rebuild. Nothing calls it yet; its first caller is the chat thread's grouping-flags cache in the next commit. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
23 lines
682 B
C++
23 lines
682 B
C++
// DragonX Wallet - reentrant local-time helper (no per-call stat of /etc/localtime on glibc).
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#pragma once
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#include <ctime>
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namespace dragonx::util {
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// Fills `out` with the local broken-down time of `t`. Returns false on failure. Thread-safe.
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inline bool localTime(std::time_t t, std::tm& out) {
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#ifdef _WIN32
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return localtime_s(&out, &t) == 0;
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#else
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return localtime_r(&t, &out) != nullptr;
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#endif
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}
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// Re-read the TZ database / TZ env (glibc localtime_r does not do this on its own after the first call).
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// Call once per cache rebuild, never per item.
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inline void refreshTimezone() {
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#ifdef _WIN32
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_tzset();
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#else
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tzset();
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#endif
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}
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} // namespace dragonx::util
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