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.Dd May 11, 2016 .Dt PCLEARFAULT 3PROC .Os .Sh NAME .Nm Pclearfault , .Nm Lclearfault .Nd clear process and thread faults .Sh SYNOPSIS .Lb libproc n libproc.h .Ft int .Fo Pclearfault .Fa "struct ps_prochandle *P" .Fc .Ft int .Fo Lclearfault .Fa "struct ps_lwphandle *L" .Fc .Sh DESCRIPTION During normal operation a process may encounter a .Sy fault , due to a hardware exception, identifying a problem with the running process. Hardware faults include things like executing illegal instructions, encountering a breakpoint, and arithmetic exceptions. Faults are discussed further in .Xr proc 4 .

p The .Fn Pclearfault function instructs the system to clear any fault pending delivery to a thread in the process represented by the process handle .Fa P . The pending fault will never be delivered to process represented by .Fa P .

p The .Fn Lclearfault function is identical to the .Fn Pclearfault function, except rather than operating on the representative thread of the process it operates on the thread handle .Fa L .

p The .Fn Pclearfault and .Fn Lclearfault functions only have meaning for active processes. They will fail on process handles corresponding to zombie processes, ELF objects, and cores. .Sh RETURN VALUES Upon successful completion, the .Fn Pclearfault and .Fn Lclearfault functions clear pending faults and return .Sy 0 . Otherwise, .Sy -1 is returned, .Sy errno is set to indicate the error, and no faults are cleared. .Sh ERRORS For a full list of possible errors see the .Sy DIAGNOSTICS section in .Xr proc 4 . .Sh INTERFACE STABILITY .Sy Uncommitted .Sh MT-LEVEL See .Sy LOCKING in .Xr libproc 3LIB . .Sh SEE ALSO .Xr libproc 3LIB , .Xr proc 4