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https://github.com/ultimatepp/ultimatepp.git
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72 lines
1.4 KiB
C++
72 lines
1.4 KiB
C++
#include "Malloc.h"
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#define LTIMING(x)
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void *sPeak;
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bool sWasPeak;
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int sKB;
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void *SysAllocRaw(size_t size)
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{
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LTIMING("SysAllocRaw");
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if(sPeak) sWasPeak = true;
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sKB += int(((size + 4095) & ~4095) >> 10);
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#ifdef PLATFORM_WIN32
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void *ptr = VirtualAlloc(NULL, size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
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#else
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#ifdef PLATFORM_LINUX
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void *ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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#else
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void *ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
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#endif
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#endif
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if(!ptr)
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Panic("Out of memory!");
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return ptr;
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}
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void SysFreeRaw(void *ptr, size_t size)
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{
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LTIMING("SysFreeRaw");
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// LOGF("SysFreeRaw %X - %d\n", ptr, size);
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sKB -= int(((size + 4095) & ~4095) >> 10);
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#ifdef PLATFORM_WIN32
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VirtualFree(ptr, 0, MEM_RELEASE);
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#else
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munmap(ptr, size);
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#endif
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}
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void *AllocRaw4KB()
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{
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static int left;
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static byte *ptr;
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static int n = 32;
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if(left == 0) {
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left = n >> 5;
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ptr = (byte *)SysAllocRaw(left * 4096);
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}
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n = n + 1;
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if(n > 4096) n = 4096;
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void *p = ptr;
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ptr += 4096;
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left--;
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return p;
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}
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void *AllocRaw64KB()
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{
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static int left;
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static byte *ptr;
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static int n = 32;
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if(left == 0) {
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left = n >> 5;
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ptr = (byte *)SysAllocRaw(left * 65536);
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}
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n = n + 1;
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if(n > 256) n = 256;
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void *p = ptr;
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ptr += 65536;
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left--;
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return p;
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}
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