Using mdb(1) (Multithreaded Programming Guide)

Multithreaded Programming Guide

Using mdb(1)

The following mdb commands can be used to access the LWPs of a multithreaded program.

Table 7–3 MT mdb Commands


`pid``:A`	Attaches to process # `pid`. This stops the process and all its LWPs.
`:R`	Detaches from process. This resumes the process and all its LWPs.
`$L`	Lists all active LWPs in the (stopped) process.
`n``:l`	Switches focus to LWP # `n.`
`$l`	Shows the LWP currently focused.
`num`:`i`	Ignores signal number `num.`

These commands to set conditional breakpoints are often useful.

Table 7–4 Setting mdb Breakpoints


`[``label``],[``count``]:b [``expression``]`	Breakpoint is detected when expression equals zero
`foo``,ffff:b <g7-0xabcdef`	Stop at foo when `g7` = the hex value `0xABCDEF`