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李通洲
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
#include "memory.h"
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#include <string.h>
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#include <mach/mach.h>
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#include <sys/sysctl.h>
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#include <unistd.h>
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const char* ffDetectMemory(FFMemoryResult* ram)
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{
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size_t length = sizeof(ram->bytesTotal);
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if (sysctl((int[]){ CTL_HW, HW_MEMSIZE }, 2, &ram->bytesTotal, &length, NULL, 0) != 0)
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return "Failed to read hw.memsize";
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uint64_t usableMemory = 0;
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length = sizeof(usableMemory);
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if (sysctlbyname("hw.memsize_usable", &usableMemory, &length, NULL, 0) != 0)
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usableMemory = ram->bytesTotal;
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mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
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vm_statistics64_data_t vmstat;
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if(host_statistics64(mach_host_self(), HOST_VM_INFO64, (host_info64_t) (&vmstat), &count) != KERN_SUCCESS)
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return "Failed to read host_statistics64";
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uint64_t pageSize = instance.state.platform.sysinfo.pageSize;
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uint64_t appMemory = vmstat.internal_page_count * pageSize;
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uint64_t wiredMemory = vmstat.wire_count * pageSize;
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uint64_t compressed = vmstat.compressor_page_count * pageSize;
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uint64_t reserved = ram->bytesTotal - usableMemory;
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ram->bytesUsed = appMemory + wiredMemory + compressed + reserved;
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return NULL;
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}
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