NAME
tkill, tgkill - send a signal to a thread
SYNOPSIS
int tkill(int tid, int sig); int tgkill(int tgid, int tid, int sig); Note: There are no glibc wrappers for these system calls; see NOTES.
DESCRIPTION
tgkill() sends the signal sig to the thread with the thread ID tid in the thread group tgid. (By contrast, kill(2) can be used to send a signal only to a process (i.e., thread group) as a whole, and the signal will be delivered to an arbitrary thread within that process.) tkill() is an obsolete predecessor to tgkill(). It allows only the target thread ID to be specified, which may result in the wrong thread being signaled if a thread terminates and its thread ID is recycled. Avoid using this system call. 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 appropriately.
ERRORS
EINVAL An invalid thread ID, thread group ID, 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. tgkill() was added in Linux 2.5.75.
CONFORMING TO
tkill() and tgkill() are Linux-specific and should not be used in programs that are intended to be portable.
NOTES
See the description of CLONE_THREAD in clone(2) for an explanation of thread groups. Glibc does not provide wrappers for these system calls; call them using syscall(2).
SEE ALSO
clone(2), gettid(2), kill(2), rt_sigqueueinfo(2)
COLOPHON
This page is part of release 4.09 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
More Linux Commands
manpages/sane-coolscan.5.html
sane-coolscan(5) - SANE backend for Nikon film-scanners.....
The sane-coolscan library implements a SANE backend that provides the interface to the following Nikon Coolscan Film scanners: Nikon LS20, LS30, LS1000, LS2000.
manpages/XResourceManagerString.3.html
XResourceManagerString(3) - obtain server resource propertie
The XResourceManagerString function returns the RESOURCE_MANAGER property from the servers root window of screen zero, which was returned when the connection wa
manpages/asn1_read_tag.3.html
asn1_read_tag(3) - Returns the TAG of one element inside a s
Returns the TAG and the CLASS of one element inside a structure. CLASS can have one of these constants: ASN1_CLASS_APPLICATION, ASN1_CLASS_UNIVERSAL, ASN1_CLASS
manpages/DefaultGC.3.html
DefaultGC(3) - Display macros and functions - Linux man page
The AllPlanes macro returns a value with all bits set to 1 suitable for use in a plane argument to a procedure. The BlackPixel macro returns the black pixel val
manpages/data_ahead.3form.html
data_ahead(3form) - test for off-screen data in given forms
The function data_ahead tests whether there is off-screen data ahead in the given form. It returns TRUE 411toppm(1) or FALSE (0). The function data_behind tests
manpages/cryptdir.1.html
cryptdir(1) - encrypt/decrypt all files in a directory......
cryptdir.1 - cryptdir encrypts all files in the current directory (or the given directory if one is provided as an argument). When called as decryptdir (i.e., s
manpages/gnutls_x509_crq_get_attribute_data.3.html
gnutls_x509_crq_get_attribute_data(3) - API function........
This function will return the requested attribute data in the certificate request. The attribute data will be stored as a string in the provided buffer. Use gnu
manpages/DBM_Filter::compress.3pm.html
DBM_Filter::compress(3pm) - filter for DBM_Filter (ManPage)
This DBM filter will compress all data before it is written to the database and uncompressed it on reading. A fatal error will be thrown if the Compress::Zlib m
manpages/XRemoveFromSaveSet.3.html
XRemoveFromSaveSet(3) - change a client's save set (ManPage)
XRemoveFromSaveSet.3 - Depending on the specified mode, XChangeSaveSet either inserts or deletes the specified window from the clients save-set. The specified w
manpages/del_curterm_sp.3ncurses.html
del_curterm_sp(3ncurses) - curses screen-pointer extension
This implementation can be configured to provide a set of functions which improve the ability to manage multiple screens. This feature can be added to any of th
manpages/gamma4scanimage.1.html
gamma4scanimage(1) - create a gamma table for scanimage.....
The tool gamma4scanimage creates a gamma table in the format expected by scanimage. You can define a gamma, a shadow and a highlight value. You also can specify
manpages/XFontsOfFontSet.3.html
XFontsOfFontSet(3) - obtain fontset information (Man Page)
The XFontsOfFontSet function returns a list of one or more XFontStructs and font names for the fonts used by the Xmb and Xwc layers for the given font set. A li
