projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright (c) 2008 Linux Foundation, written by Michael Kerrisk |
| 2 | .\" <mtk.manpages@gmail.com> | |
| 3 | .\" | |
| 93015253 | 4 | .\" %%%LICENSE_START(VERBATIM) |
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5 | .\" Permission is granted to make and distribute verbatim copies of this |
| 6 | .\" manual provided the copyright notice and this permission notice are | |
| 7 | .\" preserved on all copies. | |
| 8 | .\" | |
| 9 | .\" Permission is granted to copy and distribute modified versions of this | |
| 10 | .\" manual under the conditions for verbatim copying, provided that the | |
| 11 | .\" entire resulting derived work is distributed under the terms of a | |
| 12 | .\" permission notice identical to this one. | |
| 13 | .\" | |
| 14 | .\" Since the Linux kernel and libraries are constantly changing, this | |
| 15 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
| 16 | .\" responsibility for errors or omissions, or for damages resulting from | |
| 17 | .\" the use of the information contained herein. The author(s) may not | |
| 18 | .\" have taken the same level of care in the production of this manual, | |
| 19 | .\" which is licensed free of charge, as they might when working | |
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| 22 | .\" Formatted or processed versions of this manual, if unaccompanied by | |
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| 4b72fb64 | 24 | .\" %%%LICENSE_END |
| 8c80f3c6 | 25 | .\" |
| 460495ca | 26 | .TH PTHREAD_EQUAL 3 2015-08-08 "Linux" "Linux Programmer's Manual" |
| 8c80f3c6 | 27 | .SH NAME |
| 67ca98a7 | 28 | pthread_equal \- compare thread IDs |
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29 | .SH SYNOPSIS |
| 30 | .nf | |
| 31 | .B #include <pthread.h> | |
| dbfe9c70 | 32 | .PP |
| 8c80f3c6 | 33 | .BI "int pthread_equal(pthread_t " t1 ", pthread_t " t2 ); |
| 68e4db0a | 34 | .PP |
| 8c80f3c6 | 35 | Compile and link with \fI\-pthread\fP. |
| 6030f2d8 | 36 | .fi |
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37 | .SH DESCRIPTION |
| 38 | The | |
| 39 | .BR pthread_equal () | |
| 40 | function compares two thread identifiers. | |
| 41 | .SH RETURN VALUE | |
| 42 | If the two thread IDs are equal, | |
| 43 | .BR pthread_equal () | |
| c7094399 | 44 | returns a nonzero value; otherwise, it returns 0. |
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45 | .SH ERRORS |
| 46 | This function always succeeds. | |
| 6b0949f0 | 47 | .SH ATTRIBUTES |
| 6333d7c3 PH |
48 | For an explanation of the terms used in this section, see |
| 49 | .BR attributes (7). | |
| 50 | .TS | |
| 51 | allbox; | |
| 52 | lb lb lb | |
| 53 | l l l. | |
| 54 | Interface Attribute Value | |
| 55 | T{ | |
| 6b0949f0 | 56 | .BR pthread_equal () |
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57 | T} Thread safety MT-Safe |
| 58 | .TE | |
| 8c80f3c6 | 59 | .SH CONFORMING TO |
| 10197a43 | 60 | POSIX.1-2001, POSIX.1-2008. |
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61 | .SH NOTES |
| 62 | The | |
| 63 | .BR pthread_equal () | |
| 64 | function is necessary because thread IDs should be considered opaque: | |
| 65 | there is no portable way for applications to directly compare two | |
| 66 | .I pthread_t | |
| 67 | values. | |
| 68 | .SH SEE ALSO | |
| 69 | .BR pthread_create (3), | |
| 70 | .BR pthread_self (3), | |
| 71 | .BR pthreads (7) |