GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/librthread/rthread_attr.c Lines: 47 60 78.3 %
Date: 2017-11-13 Branches: 14 24 58.3 %

Line Branch Exec Source
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/*	$OpenBSD: rthread_attr.c,v 1.23 2017/09/05 02:40:54 guenther Exp $ */
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/*
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 * Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
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 * All Rights Reserved.
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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/*
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 * generic attribute support
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 */
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <pthread.h>
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#include <pthread_np.h>
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#include "rthread.h"
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/*
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 * Note: stack_size + guard_size == total stack used
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 *
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 * pthread_attr_init MUST be called before any other attribute function
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 * for proper operation.
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 *
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 * Every call to pthread_attr_init MUST be matched with a call to
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 * pthread_attr_destroy to avoid leaking memory.   This is an implementation
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 * requirement, not a POSIX requirement.
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 */
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int
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pthread_attr_init(pthread_attr_t *attrp)
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{
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	pthread_attr_t attr;
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	/* make sure _rthread_attr_default has been initialized */
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	if (!_threads_ready)
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		_rthread_init();
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	attr = calloc(1, sizeof(*attr));
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	if (!attr)
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		return (errno);
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	*attr = _rthread_attr_default;
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	*attrp = attr;
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	return (0);
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}
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int
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pthread_attr_destroy(pthread_attr_t *attrp)
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{
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	free(*attrp);
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	*attrp = NULL;
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	return (0);
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}
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int
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pthread_attr_getguardsize(const pthread_attr_t *attrp, size_t *guardsize)
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{
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	*guardsize = (*attrp)->guard_size;
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	return (0);
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}
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int
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pthread_attr_setguardsize(pthread_attr_t *attrp, size_t guardsize)
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{
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	(*attrp)->guard_size = guardsize;
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	return (0);
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}
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int
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pthread_attr_getdetachstate(const pthread_attr_t *attrp, int *detachstate)
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{
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	*detachstate = (*attrp)->detach_state;
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	return (0);
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}
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int
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pthread_attr_setdetachstate(pthread_attr_t *attrp, int detachstate)
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{
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	int error;
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	error = (detachstate == PTHREAD_CREATE_DETACHED ||
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		  detachstate == PTHREAD_CREATE_JOINABLE) ? 0 : EINVAL;
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	if (error == 0)
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		(*attrp)->detach_state = detachstate;
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	return (error);
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}
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int
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pthread_attr_getstack(const pthread_attr_t *attrp, void **stackaddr,
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    size_t *stacksize)
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{
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	*stackaddr = (*attrp)->stack_addr;
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	*stacksize = (*attrp)->stack_size;
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	return (0);
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}
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int
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pthread_attr_setstack(pthread_attr_t *attrp, void *stackaddr, size_t stacksize)
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{
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	int error;
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	/*
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	 * XXX Add an alignment test, on stackaddr for stack-grows-up
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	 * archs or on stackaddr+stacksize for stack-grows-down archs
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	 */
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	if (stacksize < PTHREAD_STACK_MIN)
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		return (EINVAL);
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	if ((error = pthread_attr_setstackaddr(attrp, stackaddr)))
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		return (error);
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	(*attrp)->stack_size = stacksize;
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	return (0);
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}
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int
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pthread_attr_getstacksize(const pthread_attr_t *attrp, size_t *stacksize)
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{
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	*stacksize = (*attrp)->stack_size;
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	return (0);
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}
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int
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pthread_attr_setstacksize(pthread_attr_t *attrp, size_t stacksize)
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{
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	if (!_threads_ready)		/* for ROUND_TO_PAGE */
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		_rthread_init();
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	if (stacksize < PTHREAD_STACK_MIN ||
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	    stacksize > ROUND_TO_PAGE(stacksize))
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		return (EINVAL);
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	(*attrp)->stack_size = stacksize;
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	return (0);
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}
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int
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pthread_attr_getstackaddr(const pthread_attr_t *attrp, void **stackaddr)
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{
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	*stackaddr = (*attrp)->stack_addr;
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	return (0);
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}
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int
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pthread_attr_setstackaddr(pthread_attr_t *attrp, void *stackaddr)
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{
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	if (!_threads_ready)
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		_rthread_init();		/* for _thread_pagesize */
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	if (stackaddr == NULL || (uintptr_t)stackaddr & (_thread_pagesize - 1))
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		return (EINVAL);
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	(*attrp)->stack_addr = stackaddr;
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	return (0);
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}
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DEF_NONSTD(pthread_attr_setstackaddr);
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int
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pthread_attr_getscope(const pthread_attr_t *attrp, int *contentionscope)
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{
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	*contentionscope = (*attrp)->contention_scope;
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	return (0);
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}
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int
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pthread_attr_setscope(pthread_attr_t *attrp, int contentionscope)
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{
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	if (contentionscope != PTHREAD_SCOPE_SYSTEM &&
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	    contentionscope != PTHREAD_SCOPE_PROCESS)
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		return (EINVAL);
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	(*attrp)->contention_scope = contentionscope;
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	return (0);
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}
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