From 7ee62814262a55cf1599b97b515fe8084bfb10b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20D=C3=A9saulniers?= <sim.desaulniers@gmail.com>
Date: Wed, 19 Oct 2016 15:34:40 -0400
Subject: [PATCH] log: display time before each line in log
---
include/opendht/log.h | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/include/opendht/log.h b/include/opendht/log.h
index 5a47e870..863fcf25 100644
--- a/include/opendht/log.h
+++ b/include/opendht/log.h
@@ -24,6 +24,7 @@
#include <iostream>
#include <fstream>
+#include <chrono>
namespace dht {
namespace log {
@@ -63,13 +64,23 @@ constexpr const Color::Modifier yellow(Color::FG_YELLOW);
*/
void
printLog(std::ostream& s, char const* m, va_list args) {
- static constexpr int BUF_SZ = 8192;
- char buffer[BUF_SZ];
- int ret = vsnprintf(buffer, sizeof(buffer), m, args);
+ // print log to buffer
+ std::array<char, 8192> buffer;
+ int ret = vsnprintf(buffer.data(), buffer.size(), m, args);
if (ret < 0)
return;
- s.write(buffer, std::min(ret, BUF_SZ));
- if (ret >= BUF_SZ)
+
+ // write timestamp
+ using namespace std::chrono;
+ using log_precision = microseconds;
+ constexpr auto den = log_precision::period::den;
+ auto micro = duration_cast<log_precision>(steady_clock::now().time_since_epoch()).count();
+ s << "[" << std::setfill('0') << std::setw(6) << micro / den << "."
+ << std::setfill('0') << std::setw(6) << micro % den << "]" << " ";
+
+ // write log
+ s.write(buffer.data(), std::min((size_t)ret, buffer.size()));
+ if ((size_t)ret >= buffer.size())
s << "[[TRUNCATED]]";
s.put('\n');
}
--
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