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Artifact c6d392a88fe8a217e8e902c06f4455092ec685ffdb0ca9fb04eac80d391fd25a:

  • File src/OFSystemInfo.m — part of check-in [6dff0f5922] at 2017-01-07 02:34:39 on branch trunk — Always use "." for the decimal point

    This is achieved by replacing the locale's decimal point with "." after
    formatting and replacing "." with the locale's decimal point before
    parsing.

    To still use the decimal point from the locale for formatting, the new
    flag "," is introduced to formats. This is useful for just printing a
    string to the user that is not saved to a file or sent via a network.

    While this is an ugly hack, there is no better way to do this other than
    implementing the functionality of printf and strtod myself, as POSIX
    does not specify versions of these that take a locale as an argument.
    While this is a lot of work and error-prone, I will most likely end up
    doing this eventually.

    This commit also enables the locale in OFApplication to notice when
    things break. As a nice side effect, ofhttp now uses the locale's
    decimal point in its user interface. (user: js, size: 9986) [annotate] [blame] [check-ins using] 

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
 *   Jonathan Schleifer <js@heap.zone>
 *
 * 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 <locale.h>
#include <unistd.h>

#include "platform.h"

#ifdef OF_MAC_OS_X
# include <sys/sysctl.h>
#endif

#import "OFSystemInfo.h"
#import "OFString.h"
#import "OFArray.h"
#import "OFDictionary.h"
#import "OFApplication.h"

#import "OFNotImplementedException.h"

#if defined(OF_MAC_OS_X) || defined(OF_IOS)
# ifdef HAVE_SYSDIR_H
#  include <sysdir.h>
# else
#  include <NSSystemDirectories.h>
# endif
#endif
#ifdef OF_WINDOWS
# include <windows.h>
#endif
#ifdef OF_HAIKU
# include <FindDirectory.h>
#endif
#ifdef OF_QNX
# include <sys/syspage.h>
#endif

#if defined(OF_X86_64) || defined(OF_X86)
struct x86_regs {
	uint32_t eax, ebx, ecx, edx;
};
#endif

static size_t pageSize;
static size_t numberOfCPUs;

#if defined(OF_X86_64) || defined(OF_X86)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
	struct x86_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
	memset(&regs, 0, sizeof(regs));
# endif

	return regs;
}
#endif

@implementation OFSystemInfo
+ (void)initialize
{
	if (self != [OFSystemInfo class])
		return;

#if defined(OF_WINDOWS)
	SYSTEM_INFO si;
	GetSystemInfo(&si);
	pageSize = si.dwPageSize;
	numberOfCPUs = si.dwNumberOfProcessors;
#elif defined(OF_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*)decimalPoint
{
	return [OFString stringWithUTF8String: localeconv()->decimal_point];
}

+ (OFString*)userDataPath
{
#if defined(OF_MAC_OS_X) || defined(OF_IOS)
	void *pool = objc_autoreleasePoolPush();
	char pathC[PATH_MAX];
	OFMutableString *path;
	OFString *home;

# ifdef HAVE_SYSDIR_START_SEARCH_PATH_ENUMERATION
	sysdir_search_path_enumeration_state state;

	state = sysdir_start_search_path_enumeration(
	    SYSDIR_DIRECTORY_APPLICATION_SUPPORT, SYSDIR_DOMAIN_MASK_USER);
	if (sysdir_get_next_search_path_enumeration(state, pathC) == 0)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];
# else
	NSSearchPathEnumerationState state;

	state = NSStartSearchPathEnumeration(NSApplicationSupportDirectory,
	    NSUserDomainMask);
	if (NSGetNextSearchPathEnumeration(state, pathC) == 0)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];
# endif

	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(OF_WINDOWS)
	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(OF_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];
#elif !defined(OF_IOS)
	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];
#else
	@throw [OFNotImplementedException exceptionWithSelector: _cmd
							 object: self];
#endif
}

+ (OFString*)userConfigPath
{
#if defined(OF_MAC_OS_X) || defined(OF_IOS)
	void *pool = objc_autoreleasePoolPush();
	char pathC[PATH_MAX];
	OFMutableString *path;
	OFString *home;

# ifdef HAVE_SYSDIR_START_SEARCH_PATH_ENUMERATION
	sysdir_search_path_enumeration_state state;

	state = sysdir_start_search_path_enumeration(
	    SYSDIR_DIRECTORY_LIBRARY, SYSDIR_DOMAIN_MASK_USER);
	if (sysdir_get_next_search_path_enumeration(state, pathC) == 0)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];
# else
	NSSearchPathEnumerationState state;

	state = NSStartSearchPathEnumeration(NSLibraryDirectory,
	    NSUserDomainMask);
	if (NSGetNextSearchPathEnumeration(state, pathC) == 0)
		@throw [OFNotImplementedException exceptionWithSelector: _cmd
								 object: self];
# endif

	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(OF_WINDOWS)
	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(OF_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];
#elif !defined(OF_IOS)
	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];
#else
	@throw [OFNotImplementedException OFNotImplementedException: _cmd
							     object: self];
#endif
}

+ (OFString*)CPUVendor
{
#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
	struct x86_regs regs = x86_cpuid(0, 0);
	char buffer[12];

	if (regs.eax == 0)
		return nil;

	memcpy(buffer, &regs.ebx, 4);
	memcpy(buffer + 4, &regs.edx, 4);
	memcpy(buffer + 8, &regs.ecx, 4);

	return [OFString stringWithCString: buffer
				  encoding: OF_STRING_ENCODING_ASCII
				    length: 12];
#else
	return nil;
#endif
}

#if defined(OF_X86_64) || defined(OF_X86)
+ (bool)supportsMMX
{
	return (x86_cpuid(1, 0).edx & (1 << 23));
}

+ (bool)supportsSSE
{
	return (x86_cpuid(1, 0).edx & (1 << 25));
}

+ (bool)supportsSSE2
{
	return (x86_cpuid(1, 0).edx & (1 << 26));
}

+ (bool)supportsSSE3
{
	return (x86_cpuid(1, 0).ecx & (1 << 0));
}

+ (bool)supportsSSSE3
{
	return (x86_cpuid(1, 0).ecx & (1 << 9));
}

+ (bool)supportsSSE41
{
	return (x86_cpuid(1, 0).ecx & (1 << 19));
}

+ (bool)supportsSSE42
{
	return (x86_cpuid(1, 0).ecx & (1 << 20));
}

+ (bool)supportsAVX
{
	return (x86_cpuid(1, 0).ecx & (1 << 28));
}

+ (bool)supportsAVX2
{
	return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif

#if defined(OF_POWERPC) || defined(OF_POWERPC64)
+ (bool)supportsAltiVec
{
# ifdef OF_MAC_OS_X
	int name[2] = { CTL_HW, HW_VECTORUNIT }, value = 0;
	size_t length = sizeof(value);

	if (sysctl(name, 2, &value, &length, NULL, 0) == 0)
		return value;
# endif

	return 0;
}
#endif
@end
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