WebKitSystemBits.m [plain text]
/*
* Copyright (C) 2005 Apple 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 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(" }
}
uint64_t WebMemorySize(void)
{
#if PLATFORM(IOS_SIMULATOR)
// Pretend we have 512MB of memory to make cache sizes behave like on device
return 512 * 1024 * 1024;
#endif
pthread_once(&initControl, initCapabilities);
#if PLATFORM(IOS)
// On iOS, round up the memory size to a power of 2 because max_mem may not be exactly 256MB
// (for example) and we have code that depends on those boundaries.
return powf(2.0, ceilf(log2f(gHostBasicInfo.max_mem)));
#else
return gHostBasicInfo.max_mem;
#endif
}
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];
}