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CPUCache (macOS): add support

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李通洲
2024-06-05 14:27:42 +08:00
committed by 李通洲
parent df9144ea31
commit 00f7334a3a
2 changed files with 61 additions and 3 deletions
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src/detection/cpucache/cpucache.h
+6 -3
View File
@@ -24,7 +24,7 @@ typedef struct FFCPUCacheResult
const char* ffDetectCPUCache(FFCPUCacheResult* result);
static inline void ffCPUCacheAddItem(FFCPUCacheResult* result, uint32_t level, uint32_t size, FFCPUCacheType type)
static inline FFCPUCache* ffCPUCacheAddItem(FFCPUCacheResult* result, uint32_t level, uint32_t size, FFCPUCacheType type)
{
FFlist* cacheLevel = &result->caches[level - 1];
@@ -33,12 +33,15 @@ static inline void ffCPUCacheAddItem(FFCPUCacheResult* result, uint32_t level, u
if (item->type == type && item->size == size)
{
item->num++;
return;
return item;
}
}
*(FFCPUCache*) ffListAdd(cacheLevel) = (FFCPUCache) {
FFCPUCache* item = (FFCPUCache*)ffListAdd(cacheLevel);
*item = (FFCPUCache) {
.size = size,
.num = 1,
.type = type,
};
return item;
}
src/detection/cpucache/cpucache_apple.c
+55
View File
@@ -0,0 +1,55 @@
#include "cpucache.h"
#include "common/sysctl.h"
const char* ffDetectCPUCache(FFCPUCacheResult* result)
{
// https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_system_capabilities#3901385
uint32_t nPerfLevels = (uint32_t) ffSysctlGetInt("hw.nperflevels", 0);
if (nPerfLevels <= 0) return "sysctl(hw.nperflevels) failed";
char sysctlKey[256] = "hw.perflevelN.";
char* pNum = sysctlKey + strlen("hw.perflevel");
char* pSubkey = sysctlKey + strlen("hw.perflevelN.");
const size_t lenLeft = sizeof(sysctlKey) - strlen("hw.perflevelN.");
for (uint32_t i = 0; i < nPerfLevels; ++i)
{
*pNum = (char) ('0' + i);
strncpy(pSubkey, "physicalcpu", lenLeft);
uint32_t ncpu = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (ncpu <= 0) continue;
strncpy(pSubkey, "l1icachesize", lenLeft);
uint32_t size = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (size)
ffCPUCacheAddItem(result, 1, size, FF_CPU_CACHE_TYPE_INSTRUCTION)->num = ncpu;
strncpy(pSubkey, "l1dcachesize", lenLeft);
size = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (size)
ffCPUCacheAddItem(result, 1, size, FF_CPU_CACHE_TYPE_DATA)->num = ncpu;
strncpy(pSubkey, "l2cachesize", lenLeft);
size = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (size)
{
strncpy(pSubkey, "cpusperl2", lenLeft);
uint32_t cpuSper = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (cpuSper)
ffCPUCacheAddItem(result, 2, size, FF_CPU_CACHE_TYPE_UNIFIED)->num = ncpu / cpuSper;
}
strncpy(pSubkey, "l3cachesize", lenLeft);
size = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (size)
{
strncpy(pSubkey, "cpusperl3", lenLeft);
uint32_t cpuSper = (uint32_t) ffSysctlGetInt(sysctlKey, 0);
if (cpuSper)
ffCPUCacheAddItem(result, 3, size, FF_CPU_CACHE_TYPE_UNIFIED)->num = ncpu / cpuSper;
}
}
return NULL;
}