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1. Complete one of the following steps to preload the librtc runtime library:
– Set the target application to preload librtc by using the +rtc option for the
chatr command.In addition to automatically loading the librtc library, the
+rtc option for the chatr command also maps the shared libraries as private.
To enable or disable the target application to preload the librtc runtime
library, enter the following command at the HP-UX prompt:
$ chatr +rtc <enable|disable> <executable>
NOTE: To attach and nd leaks for PA-32 applications from the startup, the
environment variable RTC_INIT should be set to on in addition to preloading
the librtc.[sl|so] library before starting the application, as follows:
$ RTC_INIT=on <executable>
OR
– Instead of automatically preloading librtc and mapping the shared libraries,
you can explicitly preload the required librtc library.
In the case of HP 9000 systems, you must explicitly map the share libraries as
private by using the +dbg enable option for the chatr command, as follows:
$ chatr +dbg enable ./<executable>
(This step is not required on Integrity systems.)
To explicitly preload the librtc runtime library and start the target
application, enter one of the following commands:
◦ For 32 bit IPF applications:
LD_PRELOAD=/opt/langtools/lib/hpux32/librtc.so <executable>
◦ For 64 bit IPF applications:
LD_PRELOAD=/opt/langtools/lib/hpux64/librtc.so <executable>
◦ For 32 bit PA applications:
LD_PRELOAD=/opt/langtools/lib/librtc.sl <executable>
◦ For 64 bit PA applications:
LD_PRELOAD=/opt/langtools/lib/pa20_64/librtc.sl <executable>
NOTE: To attach and nd leaks for PA-32 applications from the startup, the
environment variable RTC_INIT should be set to on in addition to preloading
the librtc.[sl|so] library before starting the application, as follows:
$ LD_PRELOAD=/opt/langtools/lib/librtc.sl RTC_INIT=on <application>
If RTC_INIT is turned on, librtc starts recording heap information for PA32
process, by default. Hence, you must set this environment variable only when
it is required, and you must not export this environment variable for shell.
172 HP-UX Configuration-Specific Information