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Use fmt::detail::vformat_to(buf, ...) since it is ~20ns faster than fmt::vformat_to(std::back_inserter(buf),..)

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gabime 2022-05-08 13:01:02 +03:00
parent 9b4b373121
commit 6d587f5181
1 changed files with 9 additions and 0 deletions
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9
include/spdlog/logger.h
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@ -364,7 +364,12 @@ protected:
SPDLOG_TRY SPDLOG_TRY
{ {
memory_buf_t buf; memory_buf_t buf;
#ifdef SPDLOG_USE_STD_FORMAT
fmt_lib::vformat_to(std::back_inserter(buf), fmt, fmt_lib::make_format_args(std::forward<Args>(args)...)); fmt_lib::vformat_to(std::back_inserter(buf), fmt, fmt_lib::make_format_args(std::forward<Args>(args)...));
#else
//seems that fmt::detail::vformat_to(buf, ...) is ~20ns faster than fmt::vformat_to(std::back_inserter(buf),..)
fmt::detail::vformat_to(buf, fmt, fmt::make_format_args(std::forward<Args>(args)...));
#endif
details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size())); details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
log_it_(log_msg, log_enabled, traceback_enabled); log_it_(log_msg, log_enabled, traceback_enabled);
@ -386,7 +391,11 @@ protected:
{ {
// format to wmemory_buffer and convert to utf8 // format to wmemory_buffer and convert to utf8
wmemory_buf_t wbuf; wmemory_buf_t wbuf;
#ifdef SPDLOG_USE_STD_FORMAT
fmt_lib::vformat_to(std::back_inserter(wbuf), fmt, fmt_lib::make_format_args<fmt_lib::wformat_context>(std::forward<Args>(args)...)); fmt_lib::vformat_to(std::back_inserter(wbuf), fmt, fmt_lib::make_format_args<fmt_lib::wformat_context>(std::forward<Args>(args)...));
#else
fmt::detail::vformat_to(wbuf, fmt, fmt::make_format_args<fmt::wformat_context>(std::forward<Args>(args)...));
#endif
memory_buf_t buf; memory_buf_t buf;
details::os::wstr_to_utf8buf(wstring_view_t(wbuf.data(), wbuf.size()), buf); details::os::wstr_to_utf8buf(wstring_view_t(wbuf.data(), wbuf.size()), buf);