Displaying 2 results from an estimated 2 matches for "dtrace_id_t".
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dtrace_hdl_t
2007 Sep 05
4
a piece of code in dtrace pseudo device
Dear all:
In dtrace.c, function dtrace_probe_create(), there''re a piece of code:
id = (dtrace_id_t)(uintptr_t)vmem_alloc(dtrace_arena, 1,
VM_BESTFIT | VM_SLEEP);
id is uint32_t, and I think id is used as an index to array dtrace_probes[]
but why not just use id = cur_value + 1, cur_value is a global variable to
record the lastest id?
Is this a trick? for what?
Thanks :)
Regards,
TJ
----...
2008 Oct 30
7
Is there any way to check if DTrace is running or a DTrace probe is enabled?
Hi,
I am adding DTrace probes within NFS v3 client. In my current
implementation, I use some tsd_*() functions and kmem_zalloc() function.
These functions might be heavy and affect the performance. I want to
call this function only when DTrace is running or the DTrace probes are
enable. So is there a way to check DTrace is running or DTrace probe is
enabled?
Regards,
Danhua