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libcamera: base: log: Pass dynamic prefix through

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Use move construction to essentially pass through the string
returned by `Loggable::logPrefix()` to avoid an unnecessary copy.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
This commit is contained in:
Barnabás Pőcze 2025-01-21 19:15:42 +01:00
parent 24c2caa1c1
commit aca8457d34
2 changed files with 3 additions and 3 deletions
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2
include/libcamera/base/log.h
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@ -64,7 +64,7 @@ class LogMessage
public:
LogMessage(const char *fileName, unsigned int line,
const LogCategory &category, LogSeverity severity,
const std::string &prefix = std::string());
std::string prefix = {});
~LogMessage();
std::ostream &stream() { return msgStream_; }

4
src/libcamera/base/log.cpp
View file

@ -858,11 +858,11 @@ const LogCategory &LogCategory::defaultCategory()
*/
LogMessage::LogMessage(const char *fileName, unsigned int line,
const LogCategory &category, LogSeverity severity,
const std::string &prefix)
std::string prefix)
: category_(category), severity_(severity),
timestamp_(utils::clock::now()),
fileInfo_(static_cast<std::ostringstream &&>(std::ostringstream() << utils::basename(fileName) << ":" << line).str()),
prefix_(prefix)
prefix_(std::move(prefix))
{
}