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Reset buffer length before every call to sysctlbyname.

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zanpeeters
2025-04-15 17:17:17 -07:00
parent d1c2528aed
commit acef78c778
1 changed files with 10 additions and 0 deletions
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10
cpuid_arm64.c
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@@ -374,15 +374,20 @@ int detect(void)
}
#else
#ifdef __APPLE__
length64 = sizeof(value64);
sysctlbyname("hw.ncpu",&value64,&length64,NULL,0);
cpulowperf=value64;
length64 = sizeof(value64);
sysctlbyname("hw.nperflevels",&value64,&length64,NULL,0);
if (value64 > 1) {
length64 = sizeof(value64);
sysctlbyname("hw.perflevel0.cpusperl2",&value64,&length64,NULL,0);
cpuhiperf=value64;
length64 = sizeof(value64);
sysctlbyname("hw.perflevel1.cpusperl2",&value64,&length64,NULL,0);
cpulowperf=value64;
}
length64 = sizeof(value64);
sysctlbyname("hw.cpufamily",&value64,&length64,NULL,0);
if (value64 ==131287967|| value64 == 458787763 ) return CPU_VORTEX; //A12/M1
if (value64 == 3660830781) return CPU_VORTEX; //A15/M2
@@ -467,6 +472,7 @@ int n=0;
printf("#define NUM_CORES_HP %d\n",cpuhiperf);
#endif
#ifdef __APPLE__
length64 = sizeof(value64);
sysctlbyname("hw.physicalcpu_max",&value,&length,NULL,0);
printf("#define NUM_CORES %d\n",value);
if (cpulowperf >0)
@@ -698,13 +704,17 @@ void get_cpuconfig(void)
case CPU_VORTEX:
printf("#define VORTEX \n");
#ifdef __APPLE__
length64 = sizeof(value64);
sysctlbyname("hw.l1icachesize",&value64,&length64,NULL,0);
printf("#define L1_CODE_SIZE %lld \n",value64);
length64 = sizeof(value64);
sysctlbyname("hw.cachelinesize",&value64,&length64,NULL,0);
printf("#define L1_CODE_LINESIZE %lld \n",value64);
printf("#define L1_DATA_LINESIZE %lld \n",value64);
length64 = sizeof(value64);
sysctlbyname("hw.l1dcachesize",&value64,&length64,NULL,0);
printf("#define L1_DATA_SIZE %lld \n",value64);
length64 = sizeof(value64);
sysctlbyname("hw.l2cachesize",&value64,&length64,NULL,0);
printf("#define L2_SIZE %lld \n",value64);
#endif