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Add utility function to query CPU brand string

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This commit is contained in:
Sergey Sharybin 2018-11-27 17:28:36 +01:00
parent 683662e630
commit b3e2c69416
2 changed files with 42 additions and 0 deletions
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4
source/blender/blenlib/BLI_system.h
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@ -30,6 +30,10 @@
int BLI_cpu_support_sse2(void);
void BLI_system_backtrace(FILE *fp);
/* Get CPU brand, result is to be MEM_freeN()-ed. */
char *BLI_cpu_brand_string(void);
/* getpid */
#ifdef WIN32
# define BLI_SYSTEM_PID_H <process.h>

38
source/blender/blenlib/intern/system.c
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@ -27,6 +27,7 @@
#include "BLI_utildefines.h"
#include "BLI_system.h"
#include "BLI_string.h"
#include "MEM_guardedalloc.h"
@ -138,3 +139,40 @@ void BLI_system_backtrace(FILE *fp)
}
/* end BLI_system_backtrace */
/* NOTE: The code for CPU brand string is adopted from Cycles. */
#if !defined(_WIN32) || defined(FREE_WINDOWS)
static void __cpuid(int data[4], int selector)
{
#if defined(__x86_64__)
asm("cpuid" : "=a" (data[0]), "=b" (data[1]), "=c" (data[2]), "=d" (data[3]) : "a"(selector));
#elif defined(__i386__)
asm("pushl %%ebx \n\t"
"cpuid \n\t"
"movl %%ebx, %1 \n\t"
"popl %%ebx \n\t"
: "=a" (data[0]), "=r" (data[1]), "=c" (data[2]), "=d" (data[3])
: "a"(selector)
: "ebx");
#else
data[0] = data[1] = data[2] = data[3] = 0;
#endif
}
#endif
char *BLI_cpu_brand_string(void)
{
char buf[48] = { 0 };
int result[4] = { 0 };
__cpuid(result, 0x80000000);
if (result[0] >= (int)0x80000004) {
__cpuid((int*)(buf + 0), 0x80000002);
__cpuid((int*)(buf + 16), 0x80000003);
__cpuid((int*)(buf + 32), 0x80000004);
char *brand = BLI_strdup(buf);
/* TODO(sergey): Make it a bit more presentable by removing trademark. */
return brand;
}
return NULL;
}