ObjFW  Artifact [1837a02e3e]

Artifact 1837a02e3e144d7c2612077f7d239e28e7ae002ca374c5cf756e8498fd6b9143:

• File src/thread_winapi.m — part of check-in [77780c7596] at 2019-09-01 15:29:31 on branch trunk — OFThread: Allow specifying a name before starting

  This allows specifying a name before the thread gets started, so that
  the name can be decided by whoever starts the thread, rather than just
  by the thread itself once it's running.

  This is especially useful as some operating systems do not support
  changing the name of the thread once it's running. (user: js, size: 2212) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 *               2018, 2019
 *   Jonathan Schleifer <js@heap.zone>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include <errno.h>

#import "macros.h"

bool
of_thread_attr_init(of_thread_attr_t *attr)
{
	attr->priority = 0;
	attr->stackSize = 0;

	return true;
}

bool
of_thread_new(of_thread_t *thread, const char *name, void (*function)(id),
    id object, const of_thread_attr_t *attr)
{
	*thread = CreateThread(NULL, (attr != NULL ? attr->stackSize : 0),
	    (LPTHREAD_START_ROUTINE)function, (void *)object, 0, NULL);

	if (thread == NULL) {
		switch (GetLastError()) {
		case ERROR_NOT_ENOUGH_MEMORY:
			errno = ENOMEM;
			return false;
		case ERROR_ACCESS_DENIED:
			errno = EACCES;
			return false;
		default:
			OF_ENSURE(0);
		}
	}

	if (attr != NULL && attr->priority != 0) {
		DWORD priority;

		if (attr->priority < -1 || attr->priority > 1) {
			errno = EINVAL;
			return false;
		}

		if (attr->priority < 0)
			priority = THREAD_PRIORITY_LOWEST +
			    (1.0 + attr->priority) *
			    (THREAD_PRIORITY_NORMAL - THREAD_PRIORITY_LOWEST);
		else
			priority = THREAD_PRIORITY_NORMAL +
			    attr->priority *
			    (THREAD_PRIORITY_HIGHEST - THREAD_PRIORITY_NORMAL);

		OF_ENSURE(!SetThreadPriority(*thread, priority));
	}

	return true;
}

bool
of_thread_join(of_thread_t thread)
{
	switch (WaitForSingleObject(thread, INFINITE)) {
	case WAIT_OBJECT_0:
		CloseHandle(thread);
		return true;
	case WAIT_FAILED:
		switch (GetLastError()) {
		case ERROR_INVALID_HANDLE:
			errno = EINVAL;
			return false;
		default:
			OF_ENSURE(0);
		}
	default:
		OF_ENSURE(0);
	}
}

bool
of_thread_detach(of_thread_t thread)
{
	CloseHandle(thread);

	return true;
}

void
of_thread_set_name(const char *name)
{
}