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Libraries
spdlog
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0b8a84f5
Unverified
Commit
0b8a84f5
authored
Jan 09, 2019
by
Gabi Melman
Committed by
GitHub
Jan 09, 2019
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README.md
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0b8a84f5
...
@@ -77,42 +77,43 @@ async... Elapsed: 0.349851 2,858,358/sec
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@@ -77,42 +77,43 @@ async... Elapsed: 0.349851 2,858,358/sec
## Usage samples
## Usage samples
#### Basic usage
```
c++
#include "spdlog/spdlog.h"
int
main
()
{
spdlog
::
info
(
"Welcome to spdlog!"
);
spdlog
::
error
(
"Some error message with arg: {}"
,
1
);
spdlog
::
warn
(
"Easy padding in numbers like {:08d}"
,
12
);
spdlog
::
critical
(
"Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}"
,
42
);
spdlog
::
info
(
"Support for floats {:03.2f}"
,
1.23456
);
spdlog
::
info
(
"Positional args are {1} {0}.."
,
"too"
,
"supported"
);
spdlog
::
info
(
"{:<30}"
,
"left aligned"
);
spdlog
::
set_level
(
spdlog
::
level
::
debug
/
Set
global
log
level
to
debug
spdlog
::
debug
(
"This message should be displayed.."
);
// change log pattern
spdlog
::
set_pattern
(
"[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v"
);
// Compile time log levels
// define SPDLOG_ACTIVE_LEVEL to desired level
SPDLOG_TRACE
(
"Some trace message with param {}"
,
{});
SPDLOG_DEBUG
(
"Some debug message"
);
}
```
#### create stdout/stderr logger object
```
c++
```
c++
#include "spdlog/spdlog.h"
#include "spdlog/spdlog.h"
#include "spdlog/sinks/stdout_color_sinks.h"
#include "spdlog/sinks/stdout_color_sinks.h"
void
stdout_example
()
void
stdout_example
()
{
{
// create color multi threaded logger
// create color multi threaded logger
auto
console
=
spdlog
::
stdout_color_mt
(
"console"
);
auto
console
=
spdlog
::
stdout_color_mt
(
"console"
);
console
->
info
(
"Welcome to spdlog!"
);
auto
err_logger
=
spdlog
::
stderr_color_mt
(
"stderr"
);
console
->
error
(
"Some error message with arg: {}"
,
1
);
auto
err_logger
=
spdlog
::
stderr_color_mt
(
"stderr"
);
err_logger
->
error
(
"Some error message"
);
// Formatting examples
console
->
warn
(
"Easy padding in numbers like {:08d}"
,
12
);
console
->
critical
(
"Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}"
,
42
);
console
->
info
(
"Support for floats {:03.2f}"
,
1.23456
);
console
->
info
(
"Positional args are {1} {0}.."
,
"too"
,
"supported"
);
console
->
info
(
"{:<30}"
,
"left aligned"
);
spdlog
::
get
(
"console"
)
->
info
(
"loggers can be retrieved from a global registry using the spdlog::get(logger_name)"
);
spdlog
::
get
(
"console"
)
->
info
(
"loggers can be retrieved from a global registry using the spdlog::get(logger_name)"
);
// Runtime log levels
spdlog
::
set_level
(
spdlog
::
level
::
info
);
// Set global log level to info
console
->
debug
(
"This message should not be displayed!"
);
console
->
set_level
(
spdlog
::
level
::
trace
);
// Set specific logger's log level
console
->
debug
(
"This message should be displayed.."
);
// Customize msg format for all loggers
spdlog
::
set_pattern
(
"[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v"
);
console
->
info
(
"This an info message with custom format"
);
// Compile time log levels
// define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
SPDLOG_TRACE
(
console
,
"Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}"
,
1
,
3.23
);
SPDLOG_DEBUG
(
console
,
"Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}"
,
1
,
3.23
);
}
}
```
```
---
---
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