Copyright (c) 2003 Alexey Zelkin <phantom@FreeBSD.org>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
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2. Redistributions in binary form must reproduce the above copyright
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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$FreeBSD$
.Dd February 13, 2003 .Dt PTHREAD_SWITCH_ADD_NP 3 .Os .Sh NAME .Nm pthread_switch_add_np , .Nm pthread_switch_delete_np .Nd thread context switches debugging primitives .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread_np.h .Ft int .Fn pthread_switch_add_np "pthread_switch_routine_t routine" .Ft int .Fn pthread_switch_delete_np "pthread_switch_routine_t routine" .Sh DESCRIPTION An application is allowed to monitor the thread context switches inside the threading library. An application can install a routine that gets called every time a thread (explicitly created by an application with the .Xr pthread_create 3 function) gets the context switched. The routine is passed the thread IDs of the threads that are being switched in and out. Installation and removal of these hooks may be done using the .Fn pthread_switch_add_np and .Fn pthread_switch_delete_np functions respectively. .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS The .Fn pthread_switch_add_np may fail if: l -tag -width Er t Bq Er EINVAL .Dv NULL pointer was passed in the .Fa routine argument. .El
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
$FreeBSD$
.Dd February 13, 2003 .Dt PTHREAD_SWITCH_ADD_NP 3 .Os .Sh NAME .Nm pthread_switch_add_np , .Nm pthread_switch_delete_np .Nd thread context switches debugging primitives .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread_np.h .Ft int .Fn pthread_switch_add_np "pthread_switch_routine_t routine" .Ft int .Fn pthread_switch_delete_np "pthread_switch_routine_t routine" .Sh DESCRIPTION An application is allowed to monitor the thread context switches inside the threading library. An application can install a routine that gets called every time a thread (explicitly created by an application with the .Xr pthread_create 3 function) gets the context switched. The routine is passed the thread IDs of the threads that are being switched in and out. Installation and removal of these hooks may be done using the .Fn pthread_switch_add_np and .Fn pthread_switch_delete_np functions respectively. .Sh RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. .Sh ERRORS The .Fn pthread_switch_add_np may fail if: l -tag -width Er t Bq Er EINVAL .Dv NULL pointer was passed in the .Fa routine argument. .El
p The .Fn pthread_switch_delete_np may fail if: l -tag -width Er t Bq Er EINVAL The .Fa routine argument is different from the argument previously passed to the .Fn pthread_switch_add_np function. .El .Sh SEE ALSO .Xr pthread_create 3 .Sh AUTHORS This manual page was written by .An Alexey Zelkin Aq phantom@FreeBSD.org .