HP gnu source-level debugger 5992-4701 manual HP-UX Configuration-Specific Information

14 HP-UX Configuration-Specific Information

While nearly all GDB commands are available for all native and cross versions of the debugger, there are some exceptions. This chapter describes features, commands and, enhancements available only on HP-UX.

14.1 Summary of HP Enhancements to GDB

WDB provides the following features in addition to the standard GDB features:

•Support for debugging memory problems.

•Support for heap usage reporting

•The min-heap-size <num> option for set heap-check command reports the heap allocations that exceed the specified number <num> of bytes based on the cumulative number of bytes that are allocated at each call-site, which is inclusive of multiple calls to malloc at a particular call site.

•Heap checking commands info heap high-mem and set heap-check high-mem-count X_number .

•Commands which, exit, info heap process and, info heap arena.

•WDB supports the +check compiler option on Integrity systems to invoke batch RTC, to determine runtime memory problems.

•Enhanced batch RTC support, for better reporting, and options have replaced old ones.

•RTC heap corruption checks for calls to strcpy(), memset(), and memcpy() have been added.

•Support for memory checking analysis for user defined memory management routines.

•High water mark records the number of times the brk() value changes.

•Heap analysis on programs with pending signals using the info leak command.

•Commands info module ADDRESS, show envvars, and info corruption.

•Command line option (-pidor -p) to attach to an existing process.

•Support for debugging kernel threads and user threads.

•Support for enabling and disabling threads.

•Thread debugging commands set thread-check on/off, info thread [thread-id],info mutex [mutex- id], info condvar [condvar-id], and info rwlock [rwlock- id].

•Enhanced thread debugging options for set thread-check command such as recursive-relock,num-waiter,stack-util,thread-exit-no-join-detach,thread-exit-own-mutex,cv-wait-no-mx, cv-multiple-mxs,mixed-sched- policy, and unlock-not-own.

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