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rcnewdelete.cpp
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140 lines (129 loc) · 5.06 KB
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/*----------------------------------------------------------------------------------*\
| |
| rcnewdelete.cpp |
| |
| Copyright (c) 2019 Richard Cookman |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in all |
| copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| SOFTWARE. |
| |
\*----------------------------------------------------------------------------------*/
#include "rcnewdelete.hpp"
void* aligned_new_allocate(std::size_t count, size_t al) {
rcmalloc::default_allocator<char> alloc;
rcmalloc::alloc_data adat = rcmalloc::init_alloc_data_basic();
unsigned count_alignment = std::alignment_of<uint32_t>();
unsigned offset = 0;
if(count_alignment >= al) {
adat.size = count + sizeof(uint32_t);
adat.size_of = 1;
offset = sizeof(uint32_t);
} else {
adat.size = count + al;
adat.size_of = 1;
offset = al;
}
adat.alignment = (std::alignment_of<uint32_t>() > al ? std::alignment_of<uint32_t>() : al);
void* rtn = alloc.allocate(&adat);
*((unsigned*)rtn) = count;
return (char*)rtn + offset;
}
inline void* general_new_allocate(std::size_t count) {
return aligned_new_allocate(count, std::alignment_of<void*>());
}
//replace allocator new and delete
void* operator new(std::size_t count) STLIB_NEWTHROW {
return general_new_allocate(count);
}
void* operator new[](std::size_t count) STLIB_NEWTHROW {
return general_new_allocate(count);
}
#if __cpp_aligned_new
void* operator new(std::size_t count, std::align_val_t al) STLIB_NEWTHROW {
return aligned_new_allocate(count, (const size_t&)al);
}
void* operator new[](std::size_t count, std::align_val_t al) STLIB_NEWTHROW {
return aligned_new_allocate(count, (const size_t&)al);
}
#endif
void* operator new(std::size_t count, const std::nothrow_t&) noexcept {
return general_new_allocate(count);
}
void* operator new[](std::size_t count, const std::nothrow_t&) noexcept {
return general_new_allocate(count);
}
#if __cpp_aligned_new
void* operator new(std::size_t count,
std::align_val_t al, const std::nothrow_t&) noexcept {
return aligned_new_allocate(count, (const size_t&)al);
}
void* operator new[](std::size_t count,
std::align_val_t al, const std::nothrow_t&) noexcept {
return aligned_new_allocate(count, (const size_t&)al);
}
#endif
void aligned_delete_deallocate(void* ptr, size_t al) {
rcmalloc::default_allocator<char> alloc;
unsigned count_alignment = std::alignment_of<uint32_t>();
unsigned offset = 0;
if(count_alignment >= al)
offset = sizeof(uint32_t);
else
offset = al;
ptr = (char*)ptr - offset;
size_t sz = *(unsigned*)ptr + offset;
rcmalloc::dealloc_data ddat = rcmalloc::init_dealloc_data_basic();
ddat.ptr = ptr;
ddat.size = sz;
ddat.alignment = (std::alignment_of<uint32_t>() > al ? std::alignment_of<uint32_t>() : al);
ddat.size_of = 1;
alloc.deallocate(&ddat);
}
inline void general_delete_deallocate(void* ptr) {
aligned_delete_deallocate(ptr, std::alignment_of<void*>());
}
void operator delete(void* ptr) noexcept {
general_delete_deallocate(ptr);
}
void operator delete[](void* ptr) noexcept {
general_delete_deallocate(ptr);
}
#if __cpp_aligned_new
void operator delete(void* ptr, std::align_val_t al) noexcept {
aligned_delete_deallocate(ptr, (const size_t&)al);
}
void operator delete[](void* ptr, std::align_val_t al) noexcept {
aligned_delete_deallocate(ptr, (const size_t&)al);
}
#endif
void operator delete(void* ptr, std::size_t sz) noexcept {
general_delete_deallocate(ptr);
}
void operator delete[](void* ptr, std::size_t sz) noexcept {
general_delete_deallocate(ptr);
}
#if __cpp_aligned_new
void operator delete(void* ptr, std::size_t sz,
std::align_val_t al) noexcept {
aligned_delete_deallocate(ptr, (const size_t&)al);
}
void operator delete[](void* ptr, std::size_t sz,
std::align_val_t al) noexcept {
aligned_delete_deallocate(ptr, (const size_t&)al);
}
#endif