Files, Processes, and Threads Dcmds

process ::fd fd-num

Print the file_t address corresponding to the file descriptor fd-num associated with the specified process. The process is specified using the virtual address of its proc_t structure.

thread ::findstack [ command ]

Print the stack trace associated with the given kernel thread, identified by the virtual address of its kthread_t structure. The dcmd employs several different algorithms to locate the appropriate stack backtrace. If an optional command string is specified, the dot variable is reset to the frame pointer address of the topmost stack frame, and the specified command is evaluated as if it had been typed at the command line. The default command string is “<.$C0”; that is, print a stack trace including frame pointers but no arguments.

::pgrep [-x] [-n|-o] regexp

Display process information for processes whose name matches the regexp regular expression pattern. The ::pgrep dcmd is similar to the pgrep(1) command. The ::pgrep dcmd is used to pattern match against all processes. When the -n option is used, display only the newest process that matches the pattern. When the -o option is used, display only the oldest process that matches the pattern. When the -x option is used, display only those processes whose names are exactly the same as the search pattern.

In kmdb(1), the regexp used with ::pgrep must be a plain alpha-numeric text string.

pid ::pid2proc

Print the proc_t address corresponding to the specified PID. Recall that MDB's default base is hexadecimal, so decimal PIDs obtained using pgrep(1) or ps(1) should be prefixed with 0t.

process ::pmap [-q]

Print the memory map of the process indicated by the given process address. The dcmd displays output using a format similar to pmap(1). If the -q option is present, the dcmd displays an abbreviated form of its output that requires less processing time.

[ address ] ::ps [-fltTP]

Print a summary of the information related to the specified process, or all active system processes, similar to ps(1). If the -f option is specified, the full command name and initial arguments are printed. If the -l option is specified, the LWPs associated with each process are printed. If the -t option is specified, the kernel threads associated with each process LWP are printed. If the -T option is specified, the task ID associated with each process is displayed. If the -P option is specified, the project ID associated with each process is displayed.

::ptree

Print a process tree, with child processes indented from their respective parent processes. The dcmd displays output using a format similar to ptree(1).

address ::task

Print a list of the active kernel task structures and their associated ID numbers and attributes. The process task ID is described in more detail in settaskid(2).

[ address ] ::thread [-bdfimps]

Display properties of the specified kernel kthread_t structure. If no kthread_t address is specified, the properties of all kernel threads are displayed. The dcmd options are used to control which output columns are shown. If no options are present, the -i option is enabled by default. If the -b option is present, information relating to the thread's turnstile and blocking synchronization object is shown. If the -d option is present, the thread's dispatcher priority, binding, and last dispatch time is shown. If the -f option is present, threads whose state is TS_FREE are elided from the output. If the -i option is present (the default), thread state, flags, priority, and interrupt information is shown. If the -m option is present, all of the other output options are merged together on to a single output line. If the -p option is present, the thread's process, LWP, and credential pointers are displayed. If the -s option is present, the thread's signal queue and masks of pending and held signals are shown.

vnode ::whereopen

Given a vnode_t address, print the proc_t addresses of all processes that have this vnode currently open in their file table.