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Diffstat (limited to 'stap.1.in')
| -rw-r--r-- | stap.1.in | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -869,6 +869,21 @@ run a probe handler, default 1024. This number should be large enough for the probe handler's own needs, plus a safety margin. .PP +Multipule scripts can write data into a relay buffer concurrently. A host +script provides an interface for accessing its relay buffer to guest scripts. +Then, the output of the guests are merged into the output of the host. +To run a script as a host, execute stap with +.BR \-DRELAYHOST[=name] +option. The +.BR name +identifies your host script among several hosts. +While running the host, execute stap with +.BR \-DRELAYGUEST[=name] +to add a guest script to the host. +Note that you must unload guests before unloading a host. If there are some +guests connected to the host, unloading the host will be failed. + +.PP In case something goes wrong with .IR stap " or " staprun after a probe has already started running, one may safely kill both |