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Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man4/ddb.4 | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4 index 488c75d..6475ce5 100644 --- a/share/man/man4/ddb.4 +++ b/share/man/man4/ddb.4 @@ -59,7 +59,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 6, 2007 +.Dd December 25, 2007 .Dt DDB 4 .Os .Sh NAME @@ -593,6 +593,39 @@ Hard reset the system. .It Ic help Print a short summary of the available commands and command abbreviations. +.Pp +.It Ic capture on +.It Ic capture off +.It Ic capture reset +.It Ic capture status +.Nm +supports a basic output capture facility, which can be used to retrieve the +results of debugging commands from userpsace using +.Xr sysctl 2 . +.Ic capture on +enables output capture; +.Ic capture off +disables capture. +.Ic capture reset +will clear the capture buffer and disable capture. +.Ic capture status +will report current buffer use, buffer size, and disposition of output +capture. +.Pp +Userspace processes may inspect and manage +.Nm +capture state using +.Xr sysctl 8 : +.Pp +.Dv debug.ddb.capture.bufsize +may be used to query or set the current capture buffer size. +.Pp +.Dv debug.ddb.capture.maxbufsize +may be used to query the compile-time limit on the capture buffer size. +.Pp +.Dv debug.ddb.capture.bytes +may be used to query the number of bytes of output currently in the capture +buffer. .El .Sh VARIABLES The debugger accesses registers and variables as |
