The pid provider enables tracing of any user
process, as specified by its pid.
The pid provider enables tracing function entry
and return in user programs just like the fbt
provider provides that capability for the kernel. Note that most
of the examples in this guide that use the fbt
provider to trace kernel function calls can be modified slightly
to apply to user processes.
The pid provider also enables tracing of any
instruction, as specified by an absolute address or function
offset.
The pid provider has no probe effect when
probes are not enabled. When probes are enabled, the probes only
induce probe effect on those processes that are traced.
When the compiler inlines a function, the pid
provider's probe does not fire. Use one of the following methods
to compile a particular C function so that it will not be
inlined.
Sun Studio:
#pragma no_inline (funcname[, funcname])gcc:funcname __attribute__ ((noinline))
Consult your compiler documentation for updates.