78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
/*
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* Mr. 4th Dimention - Allen Webster
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*
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* 30.08.2016
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*
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* Replacements for common memory block managing functions.
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*/
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// TOP
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// TODO(allen): Make these as fast as possible
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#if 0
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internal void
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block_zero(void *a, u64 size){
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for (u8 *ptr = (u8*)a, *e = ptr + size; ptr < e; ptr += 1){
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*ptr = 0;
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}
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}
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internal void
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block_fill_ones(void *a, u64 size){
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for (u8 *ptr = (u8*)a, *e = ptr + size; ptr < e; ptr += 1){
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*ptr = 0xFF;
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}
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}
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internal void
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block_copy(void *dst, void *src, u64 size){
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for (u8 *d = (u8*)dst, *s = (u8*)src, *e = s + size; s < e; d += 1, s += 1){
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*d = *s;
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}
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}
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internal i32
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block_compare(void *a, void *b, u64 size){
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for (u8 *aptr = (u8*)a, *bptr = (u8*)b, *e = bptr + size; bptr < e; aptr += 1, bptr += 1){
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i32 dif = (i32)*aptr - (i32)*bptr;
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if (dif != 0){
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return(dif > 0?1:-1);
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}
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}
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return(0);
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}
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internal void
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block_fill_u8(void *a, u64 size, u8 val){
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for (u8 *ptr = (u8*)a, *e = ptr + size; ptr < e; ptr += 1){
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*ptr = val;
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}
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}
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internal void
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block_fill_u16(void *a, u64 size, u16 val){
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Assert(size%sizeof(u16) == 0);
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u64 count = size/sizeof(u16);
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for (u16 *ptr = (u16*)a, *e = ptr + count; ptr < e; ptr += 1){
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*ptr = val;
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}
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}
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internal void
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block_fill_u32(void *a, u64 size, u32 val){
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Assert(size%sizeof(u32) == 0);
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u64 count = size/sizeof(u32);
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for (u32 *ptr = (u32*)a, *e = ptr + count; ptr < e; ptr += 1){
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*ptr = val;
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}
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}
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internal void
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block_fill_u64(void *a, u64 size, u64 val){
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Assert(size%sizeof(u64) == 0);
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u64 count = size/sizeof(u64);
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for (u64 *ptr = (u64*)a, *e = ptr + count; ptr < e; ptr += 1){
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*ptr = val;
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}
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}
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#define block_zero_struct(s) block_zero((s), sizeof(*(s)))
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#endif
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// BOTTOM
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