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cache millis in full_formatter

This commit is contained in:
gabime 2018-07-09 21:07:44 +03:00
parent 374a22b4b9
commit a776a774e1
2 changed files with 60 additions and 36 deletions
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24
include/spdlog/details/fmt_helper.h
View File

@ -8,13 +8,16 @@
namespace spdlog {
namespace details {
namespace fmt_helper {
inline void append_str(const std::string &str, fmt::memory_buffer &dest)
template <size_t Buffer_Size>
inline void append_str(const std::string &str, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
auto *str_ptr = str.data();
dest.append(str_ptr, str_ptr + str.size());
}
inline void append_c_str(const char *c_str, fmt::memory_buffer &dest)
template <size_t Buffer_Size>
inline void append_c_str(const char *c_str, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
char ch;
while ((ch = *c_str) != '\0')
@ -24,21 +27,22 @@ inline void append_c_str(const char *c_str, fmt::memory_buffer &dest)
}
}
template<size_t N1, size_t N2>
inline void append_buf(const fmt::basic_memory_buffer<char, N1> &buf, fmt::basic_memory_buffer<char, N2> &dest)
template<size_t Buffer_Size1, size_t Buffer_Size2>
inline void append_buf(const fmt::basic_memory_buffer<char, Buffer_Size1> &buf, fmt::basic_memory_buffer<char, Buffer_Size2> &dest)
{
auto *buf_ptr = buf.data();
dest.append(buf_ptr, buf_ptr + buf.size());
}
template<typename T>
inline void append_int(T n, fmt::memory_buffer &dest)
template<typename T, size_t Buffer_Size>
inline void append_int(T n, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
fmt::format_int i(n);
dest.append(i.data(), i.data() + i.size());
}
inline void pad2(int n, fmt::memory_buffer &dest)
template <size_t Buffer_Size>
inline void pad2(int n, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
if (n > 99)
{
@ -61,7 +65,8 @@ inline void pad2(int n, fmt::memory_buffer &dest)
fmt::format_to(dest, "{:02}", n);
}
inline void pad3(int n, fmt::memory_buffer &dest)
template <size_t Buffer_Size>
inline void pad3(int n, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
if (n > 99)
{
@ -86,7 +91,8 @@ inline void pad3(int n, fmt::memory_buffer &dest)
fmt::format_to(dest, "{:03}", n);
}
inline void pad6(size_t n, fmt::memory_buffer &dest)
template <size_t Buffer_Size>
inline void pad6(size_t n, fmt::basic_memory_buffer<char, Buffer_Size> &dest)
{
// todo: maybe replace this implementation with
// pad3(n / 1000, dest);

72
include/spdlog/details/pattern_formatter.h
View File

@ -120,7 +120,16 @@ class c_formatter SPDLOG_FINAL : public flag_formatter
{
void format(const details::log_msg &, const std::tm &tm_time, fmt::memory_buffer &dest) override
{
fmt::format_to(dest, "{} {} {} ", days[tm_time.tm_wday], months[tm_time.tm_mon], tm_time.tm_mday); //
//fmt::format_to(dest, "{} {} {} ", days[tm_time.tm_wday], months[tm_time.tm_mon], tm_time.tm_mday);
// date
fmt_helper::append_str(days[tm_time.tm_wday], dest);
dest.push_back(' ');
fmt_helper::append_str(months[tm_time.tm_mon], dest);
dest.push_back(' ');
fmt_helper::append_int(tm_time.tm_mday, dest);
dest.push_back(' ');
// time
fmt_helper::pad2(tm_time.tm_hour, dest);
dest.push_back(':');
fmt_helper::pad2(tm_time.tm_min, dest);
@ -366,7 +375,6 @@ class t_formatter SPDLOG_FINAL : public flag_formatter
{
void format(const details::log_msg &msg, const std::tm &, fmt::memory_buffer &dest) override
{
fmt_helper::pad6(msg.thread_id, dest);
}
};
@ -385,7 +393,6 @@ class i_formatter SPDLOG_FINAL : public flag_formatter
{
void format(const details::log_msg &msg, const std::tm &, fmt::memory_buffer &dest) override
{
fmt_helper::pad6(msg.msg_id, dest);
}
};
@ -457,39 +464,48 @@ class full_formatter SPDLOG_FINAL : public flag_formatter
{
#ifndef SPDLOG_NO_DATETIME
// each second cache the header
// cache the date/time part for the next second.
auto duration = msg.time.time_since_epoch();
auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration).count();
if (cached_header_.size() == 0 || cached_seconds_ts_ != seconds)
std::chrono::seconds seconds = std::chrono::duration_cast<std::chrono::seconds>(duration);
if (cache_timestamp_ != seconds || cached_datetime_.size() == 0)
{
cached_header_.resize(0);
cached_header_.push_back('[');
fmt_helper::append_int(tm_time.tm_year + 1900, cached_header_);
cached_header_.push_back('-');
cached_datetime_.resize(0);
cached_datetime_.push_back('[');
fmt_helper::append_int(tm_time.tm_year + 1900, cached_datetime_);
cached_datetime_.push_back('-');
fmt_helper::pad2(tm_time.tm_mon + 1, cached_header_);
cached_header_.push_back('-');
fmt_helper::pad2(tm_time.tm_mon + 1, cached_datetime_);
cached_datetime_.push_back('-');
fmt_helper::pad2(tm_time.tm_mday, cached_header_);
cached_header_.push_back(' ');
fmt_helper::pad2(tm_time.tm_mday, cached_datetime_);
cached_datetime_.push_back(' ');
fmt_helper::pad2(tm_time.tm_hour, cached_header_);
cached_header_.push_back(':');
fmt_helper::pad2(tm_time.tm_hour, cached_datetime_);
cached_datetime_.push_back(':');
fmt_helper::pad2(tm_time.tm_min, cached_header_);
cached_header_.push_back(':');
fmt_helper::pad2(tm_time.tm_min, cached_datetime_);
cached_datetime_.push_back(':');
fmt_helper::pad2(tm_time.tm_sec, cached_header_);
cached_header_.push_back('.');
fmt_helper::pad2(tm_time.tm_sec, cached_datetime_);
cached_datetime_.push_back('.');
cached_seconds_ts_ = seconds;
cache_timestamp_ = seconds;
}
fmt_helper::append_buf(cached_header_, dest);
fmt_helper::append_buf(cached_datetime_, dest);
// cache the millis part for the next milli.
auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000;
fmt_helper::pad3(static_cast<int>(millis), dest);
dest.push_back(']');
dest.push_back(' ');
if(millis != millis_cache_timestamp_ || cached_millis_.size() == 0)
{
cached_millis_.resize(0);
fmt_helper::pad3(millis, cached_millis_);
cached_millis_.push_back(']');
cached_millis_.push_back(' ');
millis_cache_timestamp_ = millis;
}
fmt_helper::append_buf(cached_millis_, dest);
#else // no datetime needed
(void)tm_time;
#endif
@ -512,8 +528,10 @@ class full_formatter SPDLOG_FINAL : public flag_formatter
}
private:
std::chrono::seconds::rep cached_seconds_ts_{0};
fmt::memory_buffer cached_header_;
std::chrono::seconds cache_timestamp_ {0};
std::chrono::milliseconds::rep millis_cache_timestamp_ {0};
fmt::basic_memory_buffer<char, 128> cached_datetime_;
fmt::basic_memory_buffer<char, 8> cached_millis_;
};
} // namespace details