April 2018
Intermediate to advanced
910 pages
33h 21m
English
We can create macros to add logic to our garbage collection logging. Here is the general syntax for the log macro:
log_<level>(Tag1[,...])(fmtstr, ...)
Here is an example of a log macro:
log_debug(gc, classloading)("Number of objects loaded: %d.", object_count)
The following example skeleton log macro shows how you can use the new Java 9 logging framework to create scripts for greater fidelity in logging:
LogHandle(gc, rt, classunloading) log; if (log.is_error()) { // do something specific regarding the 'error' level } if (log.is_warning()) { // do something specific regarding the 'warning' level } if (log.is_info()) { // do something specific regarding the 'info' level } if (log.is_debug()) { // do something specific regarding ...