ObjFW  Artifact [f489c81282]

Artifact f489c81282cd86c72d773b895272dc51f2a68981d48da536bca1d115389c20db:

  • File src/OFSystemInfo.m — part of check-in [06bcb21fc7] at 2017-01-09 06:26:04 on branch trunk — Add OFLocalization

    This singleton gives access to all things locale, including the ability
    to get localized strings.

    This also adds the OF_LOCALIZED() macro. Its first argument is an ID for
    the string to be localized and its second argument is the fallback
    string to be used if it cannot retrieve the localized string. Following
    that are variable name / value pairs to be replaced in the localized
    string.

    Getting translated strings is not implemented yet: Instead, it always
    uses the fallback string.

    This also switches ofhttp to localized strings. (user: js, size: 9770) [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 <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;
}

+ (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