#pragma once
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#if IL2CPP_THREADS_WIN32
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#include "os/c-api/il2cpp-config-platforms.h"
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#include "os/ErrorCodes.h"
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#include "utils/NonCopyable.h"
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// We declare windows APIs here instead of including windows system headers
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// to avoid leaking windows system headers to all of il2cpp and il2cpp-generated
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// code.
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// On UWP, old Windows SDKs (10586 and older) did not have support for Tls* functions
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// so instead we used forwarded them to Fls* equivalents. Using Tls* functions directly
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// with these old SDKs causes linker errors.
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#define IL2CPP_USE_WINRT_FLS_WORKAROUND (IL2CPP_TARGET_WINRT && WINDOWS_SDK_BUILD_VERSION <= 10586)
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#if !IL2CPP_USE_WINRT_FLS_WORKAROUND
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extern "C" {
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__declspec(dllimport) unsigned long __stdcall TlsAlloc(void);
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__declspec(dllimport) void* __stdcall TlsGetValue(unsigned long dwTlsIndex);
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__declspec(dllimport) int __stdcall TlsSetValue(unsigned long dwTlsIndex, void* lpTlsValue);
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__declspec(dllimport) int __stdcall TlsFree(unsigned long dwTlsIndex);
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__declspec(dllimport) unsigned long __stdcall GetLastError(void);
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}
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#else
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extern "C" {
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typedef void (__stdcall* PFLS_CALLBACK_FUNCTION)(void* lpFlsData);
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__declspec(dllimport) unsigned long __stdcall FlsAlloc(PFLS_CALLBACK_FUNCTION callback);
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__declspec(dllimport) void* __stdcall FlsGetValue(unsigned long dwTlsIndex);
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__declspec(dllimport) int __stdcall FlsSetValue(unsigned long dwTlsIndex, void* lpTlsValue);
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__declspec(dllimport) int __stdcall FlsFree(unsigned long dwTlsIndex);
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__declspec(dllimport) unsigned long __stdcall GetLastError(void);
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}
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#define TlsAlloc() FlsAlloc(NULL)
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#define TlsGetValue FlsGetValue
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#define TlsSetValue FlsSetValue
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#define TlsFree FlsFree
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#endif
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#define IL2CPP_TLS_OUT_OF_INDEXES ((unsigned long)0xFFFFFFFF)
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namespace il2cpp
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{
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namespace os
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{
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class ThreadLocalValueImpl : public il2cpp::utils::NonCopyable
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{
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public:
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inline ThreadLocalValueImpl()
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{
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m_Index = TlsAlloc();
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IL2CPP_ASSERT(m_Index != IL2CPP_TLS_OUT_OF_INDEXES);
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}
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inline ~ThreadLocalValueImpl()
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{
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IL2CPP_ASSERT(TlsFree(m_Index));
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}
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inline ErrorCode SetValue(void* value)
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{
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if (TlsSetValue(m_Index, value) == false)
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return static_cast<ErrorCode>(GetLastError());
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return kErrorCodeSuccess;
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}
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inline ErrorCode GetValue(void** value)
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{
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*value = TlsGetValue(m_Index);
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if (*value)
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return kErrorCodeSuccess;
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unsigned long lastError = GetLastError();
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if (lastError == 0)
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return kErrorCodeSuccess;
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return static_cast<ErrorCode>(lastError);
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}
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private:
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unsigned long m_Index;
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};
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}
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}
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#if IL2CPP_USE_WINRT_FLS_WORKAROUND
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#undef TlsAlloc
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#undef TlsGetValue
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#undef TlsSetValue
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#undef TlsFree
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#endif
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#endif // IL2CPP_THREADS_WIN32
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