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#include "stack.h"
#include "stack_allocator.h"
#include "stack_guards.h"
namespace NCoro::NStack {
namespace NDetails {
TStack::TStack(void* rawMemory, void* alignedMemory, size_t alignedSize, const char* /*name*/)
: RawMemory_((char*)rawMemory)
, AlignedMemory_((char*)alignedMemory)
, Size_(alignedSize)
{
Y_ASSERT(AlignedMemory_ && RawMemory_ && Size_);
Y_ASSERT(!(Size_ & PageSizeMask));
Y_ASSERT(!((size_t)AlignedMemory_ & PageSizeMask));
}
TStack::TStack(TStack&& rhs) noexcept
: RawMemory_(rhs.RawMemory_)
, AlignedMemory_(rhs.AlignedMemory_)
, Size_(rhs.Size_)
{
rhs.Reset();
}
TStack& TStack::operator=(TStack&& rhs) noexcept {
std::swap(*this, rhs);
rhs.Reset();
return *this;
}
void TStack::Reset() noexcept {
Y_ASSERT(AlignedMemory_ && RawMemory_ && Size_);
RawMemory_ = nullptr;
AlignedMemory_ = nullptr;
Size_ = 0;
}
} // namespace NDetails
TStackHolder::TStackHolder(NStack::IAllocator& allocator, uint32_t size, const char* name) noexcept
: Allocator_(allocator)
, Stack_(Allocator_.AllocStack(size, name))
{}
TStackHolder::~TStackHolder() {
Allocator_.FreeStack(Stack_);
}
TArrayRef<char> TStackHolder::Get() noexcept {
return Allocator_.GetStackWorkspace(Stack_.GetAlignedMemory(), Stack_.GetSize());
}
bool TStackHolder::LowerCanaryOk() const noexcept {
return Allocator_.CheckStackOverflow(Stack_.GetAlignedMemory());
}
bool TStackHolder::UpperCanaryOk() const noexcept {
return Allocator_.CheckStackOverride(Stack_.GetAlignedMemory(), Stack_.GetSize());
}
}
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