HP UX SoftBench Software Debugging Threaded Applications, Viewing and Manipulating Threads, 220

Using SoftBench Debugger

Debugging Threaded Applications

Debugging Threaded Applications

Threads are "mini-processes"—multiple "threads" of execution within a single process. Each thread has its own execution stack, but shares global variables with other threads in the process. There may be an arbitrary number of threads in a process, numbered 1 through N. (DDE assigns this thread number arbitrarily.)

Viewing and Manipulating Threads

Choose "Execution: Threads…" to display a list of the threads in your program. The "Threads" dialog box displays status information about each thread and allows you to perform certain actions on a thread.

Highlight one or more threads and select a button to request the following actions:

Disable	Remove the selected thread(s) from the list of threads
	that can run when the program resumes.
Enable	Add the selected thread(s) to the list of threads that
	can run when the program resumes.
Kill	Kill the selected thread(s).
Stack…	Display the selected thread's execution stack in a new
	window.
->Next To Run	Make the selected thread the current execution thread.
	This thread runs first when the program resumes.
Examine	Change environment to the selected thread. This
	allows you to examine the status of a thread without
	changing the current execution thread.

You can use the "Threads" dialog box and the "Stack View" window to monitor the execution of threaded programs. SoftBench Debugger indicates the currently executing thread, which is analogous to the "PC Location," by a "->" arrow in the "Threads" dialog box. The "Stack View" window indicates the thread being examined, which is analogous to the "Current Location".

You can examine other threads by selecting them in the "Threads" dialog

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