alloccount.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
cc alloccount.c -o alloccount -Wall -framework IOKit
 */

#include <assert.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOKitKeys.h>

static void printNumber( CFDictionaryRef dict, CFStringRef name )
{
 CFNumberRef	num;
 SInt32	num32;

 num = (CFNumberRef) CFDictionaryGetValue(dict, name);
 if( num) {
 assert( CFNumberGetTypeID() == CFGetTypeID(num) );
 CFNumberGetValue(num, kCFNumberSInt32Type, &num32);
	printf("%22s = %08lx = %ld K\n",
 CFStringGetCStringPtr(name, CFStringGetSystemEncoding()),
 num32, num32 / 1024);
 }
}

int main(int argc, char **argv)
{
 mach_port_t		 masterPort;
 io_registry_entry_t	 root;
 CFDictionaryRef props;
 kern_return_t status;

 // Obtain the I/O Kit communication handle.

 status = IOMasterPort(bootstrap_port, &masterPort);
 assert(status == KERN_SUCCESS);

 // Obtain the registry root entry.

 root = IORegistryGetRootEntry(masterPort);
 assert(root);

 status = IORegistryEntryCreateCFProperties(root,
			(CFTypeRef *) &props,
			kCFAllocatorDefault, kNilOptions );
 assert( KERN_SUCCESS == status );
 assert( CFDictionaryGetTypeID() == CFGetTypeID(props));

 props = (CFDictionaryRef)
		CFDictionaryGetValue( props, CFSTR(kIOKitDiagnosticsKey));
 assert( props );
 assert( CFDictionaryGetTypeID() == CFGetTypeID(props));

 printNumber(props, CFSTR("Instance allocation"));
 printNumber(props, CFSTR("Container allocation"));
 printNumber(props, CFSTR("IOMalloc allocation"));

 CFRelease(props);
 IOObjectRelease(root);

 exit(0);	
}