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#pragma once
#include "stack/stack_common.h"
#include "stack/stack.h"
#include <util/generic/noncopyable.h>
#include <util/generic/ptr.h>
#include <util/system/context.h>
#include <util/system/defaults.h>
#if !defined(STACK_GROW_DOWN)
# error "unsupported"
#endif
class TCont;
typedef void (*TContFunc)(TCont*, void*);
namespace NCoro {
namespace NStack {
class IAllocator;
}
class TTrampoline : public ITrampoLine, TNonCopyable {
public:
typedef std::function<void (TCont*)> TFunc;
TTrampoline(
NCoro::NStack::IAllocator& allocator,
uint32_t stackSize,
TFunc f,
TCont* cont
) noexcept;
TArrayRef<char> Stack() noexcept;
TExceptionSafeContext* Context() noexcept {
return &Ctx_;
}
void SwitchTo(TExceptionSafeContext* ctx) noexcept {
Y_ABORT_UNLESS(Stack_.LowerCanaryOk(), "Stack overflow (%s)", ContName());
Y_ABORT_UNLESS(Stack_.UpperCanaryOk(), "Stack override (%s)", ContName());
Ctx_.SwitchTo(ctx);
}
void DoRun() override;
void DoRunNaked() override;
private:
const char* ContName() const noexcept;
private:
NStack::TStackHolder Stack_;
const TContClosure Clo_;
TExceptionSafeContext Ctx_;
TFunc Func_;
TCont* const Cont_;
};
}
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