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Engine directory for ticket #1
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DavidWyand-GG
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285
Engine/source/platformMac/macCarbCPUInfo.cpp
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285
Engine/source/platformMac/macCarbCPUInfo.cpp
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//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <mach/machine.h>
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#include <math.h>
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#include <CoreServices/CoreServices.h>
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#include "platformMac/platformMacCarb.h"
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#include "platform/platformAssert.h"
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#include "console/console.h"
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#include "core/stringTable.h"
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// Original code by Sean O'Brien (http://www.garagegames.com/community/forums/viewthread/81815).
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// Reads sysctl() string value into buffer at DEST with maximum length MAXLEN
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// Return: 0 on success, non-zero is error in accordance with stdlib and <errno.h>
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int _getSysCTLstring(const char key[], char * dest, size_t maxlen) {
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size_t len = 0;
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int err;
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// Call with NULL for 'dest' to have the required size stored in 'len'. If the 'key'
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// doesn't exist, 'err' will be -1 and if all goes well, it will be 0.
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err = sysctlbyname(key, NULL, &len, NULL, 0);
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if (err == 0) {
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AssertWarn((len <= maxlen), ("Insufficient buffer length for SYSCTL() read. Truncating.\n"));
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if (len > maxlen)
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len = maxlen;
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// Call with actual pointers to 'dest' and clamped 'len' fields to perform the read.
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err = sysctlbyname(key, dest, &len, NULL, 0);
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}
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return err;
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}
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// TEMPLATED Reads sysctl() integer value into variable DEST of type T
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// The two predominant types used are unsigned longs and unsiged long longs
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// and the size of the argument is on a case-by-case value. As a "guide" the
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// resources at Apple claim that any "byte count" or "frequency" values will
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// be returned as ULL's and most everything else will be UL's.
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// Return: 0 on success, non-zero is error in accordance with stdlib and <errno.h>
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template <typename T>
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int _getSysCTLvalue(const char key[], T * dest) {
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size_t len = 0;
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int err;
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// Call with NULL for 'dest' to get the size. If the 'key' doesn't exist, the
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// 'err' returned will be -1, so 0 indicates success.
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err = sysctlbyname(key, NULL, &len, NULL, 0);
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if (err == 0) {
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AssertFatal((len == sizeof(T)), "Mis-matched destination type for SYSCTL() read.\n");
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// We're just double-checking that we're being called with the correct type of
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// pointer for 'dest' so we don't clobber anything nearby when writing back.
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err = sysctlbyname(key, dest, &len, NULL, 0);
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}
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return err;
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}
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Platform::SystemInfo_struct Platform::SystemInfo;
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#define BASE_MHZ_SPEED 0
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void Processor::init()
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{
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U32 procflags;
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int err, cpufam, cputype, cpusub;
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char buf[20];
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unsigned long lraw;
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unsigned long long llraw;
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Con::printf( "System & Processor Information:" );
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SInt32 MacVersion;
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if( Gestalt( gestaltSystemVersion, &MacVersion ) == noErr )
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{
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U32 revision = MacVersion & 0xf;
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U32 minorVersion = ( MacVersion & 0xf0 ) >> 4;
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U32 majorVersion = ( MacVersion & 0xff00 ) >> 8;
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Con::printf( " OSX Version: %x.%x.%x", majorVersion, minorVersion, revision );
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}
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err = _getSysCTLstring("kern.ostype", buf, sizeof(buf));
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if (err)
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Con::printf( " Unable to determine OS type\n" );
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else
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Con::printf( " Mac OS Kernel name: %s", buf);
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err = _getSysCTLstring("kern.osrelease", buf, sizeof(buf));
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if (err)
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Con::printf( " Unable to determine OS release number\n" );
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else
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Con::printf( " Mac OS Kernel version: %s", buf );
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err = _getSysCTLvalue<unsigned long long>("hw.memsize", &llraw);
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if (err)
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Con::printf( " Unable to determine amount of physical RAM\n" );
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else
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Con::printf( " Physical memory installed: %d MB", (llraw >> 20));
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err = _getSysCTLvalue<unsigned long>("hw.usermem", &lraw);
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if (err)
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Con::printf( " Unable to determine available user address space\n");
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else
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Con::printf( " Addressable user memory: %d MB", (lraw >> 20));
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////////////////////////////////
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// Values for the Family Type, CPU Type and CPU Subtype are defined in the
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// SDK files for the Mach Kernel ==> mach/machine.h
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////////////////////////////////
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// CPU Family, Type, and Subtype
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cpufam = 0;
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cputype = 0;
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cpusub = 0;
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err = _getSysCTLvalue<unsigned long>("hw.cpufamily", &lraw);
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if (err)
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Con::printf( " Unable to determine 'family' of CPU\n");
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else {
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cpufam = (int) lraw;
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err = _getSysCTLvalue<unsigned long>("hw.cputype", &lraw);
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if (err)
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Con::printf( " Unable to determine CPU type\n");
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else {
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cputype = (int) lraw;
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err = _getSysCTLvalue<unsigned long>("hw.cpusubtype", &lraw);
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if (err)
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Con::printf( " Unable to determine CPU subtype\n");
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else
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cpusub = (int) lraw;
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// If we've made it this far,
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Con::printf( " Installed processor ID: Family 0x%08x Type %d Subtype %d",cpufam, cputype,cpusub);
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}
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}
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// The Gestalt version was known to have issues with some Processor Upgrade cards
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// but it is uncertain whether this version has similar issues.
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err = _getSysCTLvalue<unsigned long long>("hw.cpufrequency", &llraw);
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if (err) {
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llraw = BASE_MHZ_SPEED;
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Con::printf( " Unable to determine CPU Frequency. Defaulting to %d MHz\n", llraw);
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} else {
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llraw /= 1000000;
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Con::printf( " Installed processor clock frequency: %d MHz", llraw);
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}
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Platform::SystemInfo.processor.mhz = (unsigned int)llraw;
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// Here's one that the original version of this routine couldn't do -- number
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// of processors (cores)
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U32 ncpu = 1;
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err = _getSysCTLvalue<unsigned long>("hw.ncpu", &lraw);
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if (err)
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Con::printf( " Unable to determine number of processor cores\n");
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else
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{
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ncpu = lraw;
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Con::printf( " Installed/available processor cores: %d", lraw);
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}
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// Now use CPUFAM to determine and then store the processor type
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// and 'friendly name' in GG-accessible structure. Note that since
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// we have access to the Family code, the Type and Subtypes are useless.
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//
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// NOTE: Even this level of detail is almost assuredly not needed anymore
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// and the Optional Capability flags (further down) should be more than enough.
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switch(cpufam)
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{
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case CPUFAMILY_POWERPC_G3:
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Platform::SystemInfo.processor.type = CPU_PowerPC_G3;
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Platform::SystemInfo.processor.name = StringTable->insert("PowerPC G3");
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break;
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case CPUFAMILY_POWERPC_G4:
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Platform::SystemInfo.processor.type = CPU_PowerPC_G3;
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Platform::SystemInfo.processor.name = StringTable->insert("PowerPC G4");
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break;
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case CPUFAMILY_POWERPC_G5:
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Platform::SystemInfo.processor.type = CPU_PowerPC_G3;
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Platform::SystemInfo.processor.name = StringTable->insert("PowerPC G5");
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break;
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case CPUFAMILY_INTEL_6_14:
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Platform::SystemInfo.processor.type = CPU_Intel_Core;
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if( ncpu == 2 )
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Platform::SystemInfo.processor.name = StringTable->insert("Intel Core Duo");
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else
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Platform::SystemInfo.processor.name = StringTable->insert("Intel Core");
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break;
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#ifdef CPUFAMILY_INTEL_6_23
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case CPUFAMILY_INTEL_6_23:
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#endif
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case CPUFAMILY_INTEL_6_15:
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Platform::SystemInfo.processor.type = CPU_Intel_Core2;
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if( ncpu == 4 )
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Platform::SystemInfo.processor.name = StringTable->insert("Intel Core 2 Quad");
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else
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Platform::SystemInfo.processor.name = StringTable->insert("Intel Core 2 Duo");
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break;
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#ifdef CPUFAMILY_INTEL_6_26
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case CPUFAMILY_INTEL_6_26:
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Platform::SystemInfo.processor.type = CPU_Intel_Core2;
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Platform::SystemInfo.processor.name = StringTable->insert( "Intel 'Nehalem' Core Processor" );
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break;
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#endif
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default:
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// explain why we can't get the processor type.
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Con::warnf( " Unknown Processor (family, type, subtype): 0x%x\t%d %d", cpufam, cputype, cpusub);
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// for now, identify it as an x86 processor, because Apple is moving to Intel chips...
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Platform::SystemInfo.processor.type = CPU_X86Compatible;
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Platform::SystemInfo.processor.name = StringTable->insert("Unknown Processor, assuming x86 Compatible");
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break;
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}
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// Now we can directly query the system about a litany of "Optional" processor capabilities
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// and determine the status by using BOTH the 'err' value and the 'lraw' value. If we request
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// a non-existant feature from SYSCTL(), the 'err' result will be -1; 0 denotes it exists
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// >>>> BUT <<<<<
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// it may not be supported, only defined. Thus we need to check 'lraw' to determine if it's
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// actually supported/implemented by the processor: 0 = no, 1 = yes, others are undefined.
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procflags = 0;
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// Seriously this one should be an Assert()
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err = _getSysCTLvalue<unsigned long>("hw.optional.floatingpoint", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_FPU;
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// List of chip-specific features
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err = _getSysCTLvalue<unsigned long>("hw.optional.mmx", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_MMX;
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err = _getSysCTLvalue<unsigned long>("hw.optional.sse", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE;
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err = _getSysCTLvalue<unsigned long>("hw.optional.sse2", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE2;
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err = _getSysCTLvalue<unsigned long>("hw.optional.sse3", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE3;
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err = _getSysCTLvalue<unsigned long>("hw.optional.supplementalsse3", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE3xt;
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err = _getSysCTLvalue<unsigned long>("hw.optional.sse4_1", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE4_1;
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err = _getSysCTLvalue<unsigned long>("hw.optional.sse4_2", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_SSE4_2;
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err = _getSysCTLvalue<unsigned long>("hw.optional.altivec", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_ALTIVEC;
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// Finally some architecture-wide settings
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err = _getSysCTLvalue<unsigned long>("hw.ncpu", &lraw);
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if ((err==0)&&(lraw>1)) procflags |= CPU_PROP_MP;
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err = _getSysCTLvalue<unsigned long>("hw.cpu64bit_capable", &lraw);
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if ((err==0)&&(lraw==1)) procflags |= CPU_PROP_64bit;
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err = _getSysCTLvalue<unsigned long>("hw.byteorder", &lraw);
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if ((err==0)&&(lraw==1234)) procflags |= CPU_PROP_LE;
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Platform::SystemInfo.processor.properties = procflags;
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Con::printf( "%s, %2.2f GHz", Platform::SystemInfo.processor.name, F32( Platform::SystemInfo.processor.mhz ) / 1000.0 );
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if (Platform::SystemInfo.processor.properties & CPU_PROP_MMX)
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Con::printf( " MMX detected");
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if (Platform::SystemInfo.processor.properties & CPU_PROP_SSE)
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Con::printf( " SSE detected");
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if (Platform::SystemInfo.processor.properties & CPU_PROP_SSE2)
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Con::printf( " SSE2 detected");
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if (Platform::SystemInfo.processor.properties & CPU_PROP_SSE3)
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Con::printf( " SSE3 detected");
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if (Platform::SystemInfo.processor.properties & CPU_PROP_ALTIVEC)
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Con::printf( " AltiVec detected");
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Con::printf( "" );
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// Trigger the signal
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Platform::SystemInfoReady.trigger();
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}
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