diff options
Diffstat (limited to 'cpp/include')
| -rw-r--r-- | cpp/include/qpid/log/Statement.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/cpp/include/qpid/log/Statement.h b/cpp/include/qpid/log/Statement.h index 8f73175630..7b3ab60b81 100644 --- a/cpp/include/qpid/log/Statement.h +++ b/cpp/include/qpid/log/Statement.h @@ -96,6 +96,24 @@ struct Statement { } while(0) /** + * FLAG must be a boolean variable. Assigns FLAG to true iff logging + * is enabled for LEVEL in the calling context. Use when extra + * support code is needed to generate log messages, to ensure that it + * is only run if the logging level is enabled. + * e.g. + * bool logWarning; + * QPID_LOG_TEST(LEVEL, logWarning); + * if (logWarning) { do stuff needed for warning log messages } + */ +#define QPID_LOG_TEST(LEVEL, FLAG) \ + do { \ + using ::qpid::log::Statement; \ + static Statement stmt_= QPID_LOG_STATEMENT_INIT(LEVEL); \ + static Statement::Initializer init_(stmt_); \ + FLAG = stmt_.enabled; \ + } while(0) + +/** * Macro for log statements. Example of use: * @code * QPID_LOG(debug, "There are " << foocount << " foos in the bar."); |