tkill - phpMan

TKILL(2)                   Linux Programmer's Manual                  TKILL(2)



NAME
       tkill - send a signal to a single process

SYNOPSIS
       int tkill(int tid, int sig);

DESCRIPTION
       The  tkill() system call is analogous to kill(2), except when the specified process
       is part of a thread group (created by specifying the CLONE_THREAD flag in the  call
       to  clone).  Since all the processes in a thread group have the same PID, they can-
       not be individually signalled with kill(2).  With tkill(), however, one can address
       each process by its unique TID.

       These are the raw system call interfaces, meant for internal thread library use.

RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and errno is set appropri-
       ately.

ERRORS
       EINVAL An invalid TID or signal was specified.

       EPERM  Permission denied.  For the required permissions, see kill(2).

       ESRCH  No process with the specified thread ID (and thread group ID) exists.

VERSIONS
       tkill() is supported since Linux 2.4.19 / 2.5.4.

CONFORMING TO
       tkill() is Linux specific and should not be used in programs that are  intended  to
       be portable.

NOTES
       Glibc  does not provide wrapper for these system calls; call them using syscall(2).

SEE ALSO
       gettid(2), kill(2)



Linux 2.6.6                       2007-06-01                          TKILL(2)

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