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.\" This -*- nroff -*- file has been generated from
.\" DocBook SGML with docbook-to-man on Debian GNU/Linux.
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.TH "pthread_create" "3"
.SH "NAME"
pthread_create \(em create a thread
.SH "SYNOPSIS"
.PP
.nf
.ta 8n 16n 24n 32n 40n 48n 56n 64n 72n
#include <rtl_sched.h>
int \fBpthread_create\fP(pthread_t \fB*thread\fR, pthread_attr_t \fB*attr\fR, void *\fB(*start_routine)(void *)\fR, void \fB*arg\fR);
.fi
.SH "DESCRIPTION"
.PP
This function is an RTLinux version of standard POSIX threads function.
\fBpthread_create\fP creates a realtime thread that
will have attributes given by \fBattr\fR, and that begins executing
function \fBstart_routine\fP(\fBarg \fR). If the attribute is NULL,
default attributes are used.
The thread attributes in RTLinux are extended to allow thread creation on specific
processors (\fBpthread_attr_setcpu_np\fP), to enable FPU operations
in the created thread (\fBpthread_attr_setfp_np\fP).
.PP
The standard thread attribute setting functions supported include
\fBpthread_attr_setschedparam\fP,
\fBpthread_attr_setdetachstate\fP,
\fBpthread_attr_setstacksize\fP,
\fBpthread_attr_setstackaddr\fP.
The last call is to allow users to allocate memory for thread stacks
-- so that threads can be
created in RT operating mode by making use of pre-allocated memory.
\fBpthread_join\fP should be used to synchronize freeing of
thread resources including memory. For example if a thread is created with
user allocated stack via \fBpthread_attr_setstackaddr\fP, that
memory can only be safely reallocated after a \fBpthread_join\fP.
.SH "RETURN VALUE"
.PP
\fBpthread_create\fP returns 0 on success and a non-zero error code on error.
.SH "ERRORS"
.IP "[EAGAIN]" 10
Either not enough memory, or
PTHREAD_THREADS_MAX would be exceeded, or pthread_create is called
from RT-thread context and preallocated stack use is not specified.
.IP " [EINVAL]" 10
Bad attributes.
.SH "AUTHOR"
.PP
Victor Yodaiken (\fIsupport@fsmlabs.com (link to URL mailto:support@fsmlabs.com) \fR)
.SH "NOTES"
.PP
In the absense of preallocated stack (via \fBpthread_attr_setstackaddr\fP), the use of this function is restricted to the Linux
\fBinit_module()\fP or \fBcleanup_module()\fP context.
.SH "SEE ALSO"
\fIUNIX spec pthread_create(3) (link to URL ../susv2/xsh/pthread_create.html) \fR, \fIpthread_attr_setstackaddr(3) (link to URL ../susv2/xsh/pthread_attr_getstackaddr.html) \fR, \fIpthread_attr_setstacksize(3) (link to URL ../susv2/xsh/pthread_attr_getstacksize.html) \fR, \fIpthread_join(3) (link to URL pthread_join.3.html) \fR, \fIpthread_make_periodic_np(3) (link to URL pthread_make_periodic_np.3.html) \fR, \fIpthread_attr_setcpu_np(3) (link to URL pthread_attr_setcpu_np.3.html) \fR, \fIpthread_attr_getcpu_np(3) (link to URL pthread_attr_getcpu_np.3.html) \fR, \fIpthread_attr_setfp_np(3) (link to URL pthread_attr_setfp_np.3.html) \fR
.PP
\(co2001 FSMLabs Inc.
.PP
All rights reserved.
...\" created by instant / docbook-to-man, Wed 13 Jun 2001, 17:57
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