/*

 * Copyright (C) 2005 Apple Computer, Inc.  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. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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.

 */

#import "WebKitSystemBits.h"

#import "WebNSFileManagerExtras.h"

#import <mach/host_info.h>

#import <mach/mach.h>

#import <mach/mach_error.h>

#import <sys/sysctl.h>

#import <sys/types.h>

#import <wtf/Assertions.h>

static host_basic_info_data_t gHostBasicInfo;

static pthread_once_t initControl = PTHREAD_ONCE_INIT;

static void initCapabilities(void)

{

    mach_msg_type_number_t  count;

    kern_return_t r;

    mach_port_t host;

    /* Discover our CPU type */

    host = mach_host_self();

    count = HOST_BASIC_INFO_COUNT;

    r = host_info(host, HOST_BASIC_INFO, (host_info_t) &gHostBasicInfo, &count);

    mach_port_deallocate(mach_task_self(), host);

    if (r != KERN_SUCCESS) {

        LOG_ERROR("%s : host_info(%d) : %s.\n", __FUNCTION__, r, mach_error_string(r));

    }

}

uint64_t WebMemorySize(void)

{

    pthread_once(&initControl, initCapabilities);

    return gHostBasicInfo.max_mem;

}

int WebNumberOfCPUs(void)

{

    static int numCPUs = 0;

    if (numCPUs == 0) {

        int mib[2];

        size_t len;

        mib[0] = CTL_HW;

        mib[1] = HW_NCPU;

        len = sizeof(numCPUs);

        sysctl(mib, 2, &numCPUs, &len, NULL, 0);

    }

    return numCPUs;

}

unsigned long long WebVolumeFreeSize(NSString *path)

{

    NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:path error:NULL];

    return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];

}