1 /*

     2  * Copyright (C) 2005 Apple Computer, Inc.  All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  * 1.  Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer. 

    10  * 2.  Redistributions in binary form must reproduce the above copyright

    11  *     notice, this list of conditions and the following disclaimer in the

    12  *     documentation and/or other materials provided with the distribution. 

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

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

    15  *     from this software without specific prior written permission. 

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #import <WebKit/WebKitSystemBits.h>

    30 

    31 #import <JavaScriptCore/Assertions.h>

    32 

    33 #include <mach/mach.h>

    34 #include <mach/host_info.h>

    35 #include <mach/mach_error.h>

    36 

    37 #include <sys/types.h>

    38 #include <sys/sysctl.h>

    39 

    40 static host_basic_info_data_t gHostBasicInfo;

    41 static pthread_once_t initControl = PTHREAD_ONCE_INIT;

    42 

    43 static void initCapabilities(void)

    44 {

    45     mach_msg_type_number_t  count;

    46     kern_return_t r;

    47     mach_port_t host;

    48 

    49     /* Discover our CPU type */

    50     host = mach_host_self();

    51     count = HOST_BASIC_INFO_COUNT;

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

    53     mach_port_deallocate(mach_task_self(), host);

    54     if (r != KERN_SUCCESS) {

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

    56     }

    57 }

    58 

    59 vm_size_t WebMemorySize(void)

    60 {

    61     pthread_once(&initControl, initCapabilities);

    62     return gHostBasicInfo.memory_size;

    63 }

    64 

    65 int WebNumberOfCPUs(void)

    66 {

    67     static int numCPUs = 0;

    68     

    69     if (numCPUs == 0) {

    70         int mib[2];

    71         size_t len;

    72 

    73         mib[0] = CTL_HW;

    74         mib[1] = HW_NCPU;

    75         len = sizeof(numCPUs);

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

    77     }

    78     return numCPUs;

    79 }

    80 

    81 unsigned long long WebVolumeFreeSize(NSString *path)

    82 {

    83     NSDictionary *fileSystemAttributesDictionary = [[NSFileManager defaultManager] fileSystemAttributesAtPath:path];

    84     return [[fileSystemAttributesDictionary objectForKey:NSFileSystemFreeSize] unsignedLongLongValue];

    85 }