/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
* Jonathan Schleifer <js@webkeks.org>
*
* 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.
*/
#define __NO_EXT_QNX
#include "config.h"
/* Work around __block being used by glibc */
#include <stdlib.h> /* include any libc header to get the libc defines */
#ifdef __GLIBC__
# undef __USE_XOPEN
#endif
#include <unistd.h>
#import "OFSystemInfo.h"
#import "OFString.h"
#import "OFArray.h"
#import "OFDictionary.h"
#import "OFApplication.h"
#import "OFNotImplementedException.h"
#if defined(__APPLE__) && !defined(OF_IOS)
# include <NSSystemDirectories.h>
#endif
#ifdef _WIN32
# include <windows.h>
#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
struct cpuid_regs {
uint32_t eax, ebx, ecx, edx;
};
static size_t pageSize;
static size_t numberOfCPUs;
static OF_INLINE struct cpuid_regs OF_CONST_FUNC
cpuid(uint32_t eax, uint32_t ecx)
{
struct cpuid_regs regs;
#if defined(OF_X86_64_ASM)
__asm__(
"cpuid"
: "=a"(regs.eax), "=b"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
#elif defined(OF_X86_ASM)
/*
* This workaround is required by GCC when using -fPIC, as ebx is a
* special register in PIC code. Yes, GCC is indeed not able to just
* push a register onto the stack before the __asm__ block and to pop
* it afterwards.
*/
__asm__(
"pushl %%ebx\n\t"
"cpuid\n\t"
"movl %%ebx, %1\n\t"
"popl %%ebx"
: "=a"(regs.eax), "=r"(regs.ebx), "=c"(regs.ecx), "=d"(regs.edx)
: "a"(eax), "c"(ecx)
);
#else
regs.eax = regs.ebx = regs.ecx = regs.edx = 0;
#endif
return regs;
}
@implementation OFSystemInfo
+ (void)initialize
{
if (self != [OFSystemInfo class])
return;
#if defined(_WIN32)
SYSTEM_INFO si;
GetSystemInfo(&si);
pageSize = si.dwPageSize;
numberOfCPUs = si.dwNumberOfProcessors;
#elif defined(__QNX__)
if ((pageSize = sysconf(_SC_PAGESIZE)) < 1)
pageSize = 4096;
numberOfCPUs = _syspage_ptr->num_cpu;
#else
# if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
if ((pageSize = sysconf(_SC_PAGESIZE)) < 1)
# endif
pageSize = 4096;
# if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF)
if ((numberOfCPUs = sysconf(_SC_NPROCESSORS_CONF)) < 1)
# endif
numberOfCPUs = 1;
#endif
}
+ alloc
{
OF_UNRECOGNIZED_SELECTOR
}
+ (size_t)pageSize
{
return pageSize;
}
+ (size_t)numberOfCPUs
{
return numberOfCPUs;
}
+ (of_string_encoding_t)native8BitEncoding
{
/* FIXME */
return OF_STRING_ENCODING_UTF_8;
}
+ (OFString*)userDataPath
{
/* TODO: Return something more sensible for iOS */
#if defined(__APPLE__) && !defined(OF_IOS)
void *pool = objc_autoreleasePoolPush();
char pathC[PATH_MAX];
NSSearchPathEnumerationState state;
OFMutableString *path;
OFString *home;
state = NSStartSearchPathEnumeration(NSApplicationSupportDirectory,
NSUserDomainMask);
if (NSGetNextSearchPathEnumeration(state, pathC) == 0)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
path = [OFMutableString stringWithUTF8String: pathC];
if ([path hasPrefix: @"~"]) {
OFDictionary *env = [OFApplication environment];
if ((home = [env objectForKey: @"HOME"]) == nil)
@throw [OFNotImplementedException
exceptionWithSelector: _cmd
object: self];
[path deleteCharactersInRange: of_range(0, 1)];
[path prependString: home];
}
[path makeImmutable];
[path retain];
objc_autoreleasePoolPop(pool);
return [path autorelease];
#elif defined(_WIN32)
void *pool = objc_autoreleasePoolPush();
OFDictionary *env = [OFApplication environment];
OFString *appData;
if ((appData = [env objectForKey: @"APPDATA"]) == nil)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
[appData retain];
objc_autoreleasePoolPop(pool);
return [appData autorelease];
#elif defined(__HAIKU__)
char pathC[PATH_MAX];
if (find_directory(B_USER_SETTINGS_DIRECTORY, 0, false,
pathC, PATH_MAX) != B_OK)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
return [OFString stringWithUTF8String: pathC];
#else
void *pool = objc_autoreleasePoolPush();
OFDictionary *env = [OFApplication environment];
OFString *var;
if ((var = [env objectForKey: @"XDG_DATA_HOME"]) != nil &&
[var length] > 0) {
[var retain];
objc_autoreleasePoolPop(pool);
return [var autorelease];
}
if ((var = [env objectForKey: @"HOME"]) == nil)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
var = [OFString pathWithComponents: [OFArray arrayWithObjects:
var, @".local", @"share", nil]];
[var retain];
objc_autoreleasePoolPop(pool);
return [var autorelease];
#endif
}
+ (OFString*)userConfigPath
{
/* TODO: Return something more sensible for iOS */
#if defined(__APPLE__) && !defined(OF_IOS)
void *pool = objc_autoreleasePoolPush();
char pathC[PATH_MAX];
NSSearchPathEnumerationState state;
OFMutableString *path;
OFString *home;
state = NSStartSearchPathEnumeration(NSLibraryDirectory,
NSUserDomainMask);
if (NSGetNextSearchPathEnumeration(state, pathC) == 0)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
path = [OFMutableString stringWithUTF8String: pathC];
if ([path hasPrefix: @"~"]) {
OFDictionary *env = [OFApplication environment];
if ((home = [env objectForKey: @"HOME"]) == nil)
@throw [OFNotImplementedException
exceptionWithSelector: _cmd
object: self];
[path deleteCharactersInRange: of_range(0, 1)];
[path prependString: home];
}
[path appendString: @"/Preferences"];
[path makeImmutable];
[path retain];
objc_autoreleasePoolPop(pool);
return [path autorelease];
#elif defined(_WIN32)
void *pool = objc_autoreleasePoolPush();
OFDictionary *env = [OFApplication environment];
OFString *appData;
if ((appData = [env objectForKey: @"APPDATA"]) == nil)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
[appData retain];
objc_autoreleasePoolPop(pool);
return [appData autorelease];
#elif defined(__HAIKU__)
char pathC[PATH_MAX];
if (find_directory(B_USER_SETTINGS_DIRECTORY, 0, false,
pathC, PATH_MAX) != B_OK)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
return [OFString stringWithUTF8String: pathC];
#else
void *pool = objc_autoreleasePoolPush();
OFDictionary *env = [OFApplication environment];
OFString *var;
if ((var = [env objectForKey: @"XDG_CONFIG_HOME"]) != nil &&
[var length] > 0) {
[var retain];
objc_autoreleasePoolPop(pool);
return [var autorelease];
}
if ((var = [env objectForKey: @"HOME"]) == nil)
@throw [OFNotImplementedException exceptionWithSelector: _cmd
object: self];
var = [var stringByAppendingPathComponent: @".config"];
[var retain];
objc_autoreleasePoolPop(pool);
return [var autorelease];
#endif
}
+ (OFString*)CPUVendor
{
struct cpuid_regs regs = cpuid(0, 0);
char buffer[12];
if (regs.eax == 0)
return nil;
memcpy(buffer, ®s.ebx, 4);
memcpy(buffer + 4, ®s.edx, 4);
memcpy(buffer + 8, ®s.ecx, 4);
return [OFString stringWithCString: buffer
encoding: OF_STRING_ENCODING_ASCII
length: 12];
}
+ (bool)supportsMMX
{
return (cpuid(1, 0).edx & (1 << 23));
}
+ (bool)supportsSSE
{
return (cpuid(1, 0).edx & (1 << 25));
}
+ (bool)supportsSSE2
{
return (cpuid(1, 0).edx & (1 << 26));
}
+ (bool)supportsSSE3
{
return (cpuid(1, 0).ecx & (1 << 0));
}
+ (bool)supportsSSSE3
{
return (cpuid(1, 0).ecx & (1 << 9));
}
+ (bool)supportsSSE41
{
return (cpuid(1, 0).ecx & (1 << 19));
}
+ (bool)supportsSSE42
{
return (cpuid(1, 0).ecx & (1 << 20));
}
+ (bool)supportsAVX
{
return (cpuid(1, 0).ecx & (1 << 28));
}
+ (bool)supportsAVX2
{
return cpuid(0, 0).eax >= 7 && (cpuid(7, 0).ebx & (1 << 5));
}
@end