mirror of
https://github.com/ROCm/composable_kernel.git
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124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
/*******************************************************************************
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*
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* MIT License
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*
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* Copyright (c) 2017 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*******************************************************************************/
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#ifndef GUARD_OLC_ENV_HPP
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#define GUARD_OLC_ENV_HPP
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#include <cstdlib>
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#include <cstring>
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#include <string>
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#include <vector>
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namespace online_compile {
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/// \todo Rework: Case-insensitive string compare, ODR, (?) move to .cpp
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// Declare a cached environment variable
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#define OLC_DECLARE_ENV_VAR(x) \
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struct x \
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{ \
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static const char* value() { return #x; } \
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};
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/*
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* Returns false if a feature-controlling environment variable is defined
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* and set to something which disables a feature.
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*/
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inline bool IsEnvvarValueDisabled(const char* name)
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{
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const auto value_env_p = std::getenv(name);
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return value_env_p != nullptr &&
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(std::strcmp(value_env_p, "disable") == 0 || std::strcmp(value_env_p, "disabled") == 0 ||
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std::strcmp(value_env_p, "0") == 0 || std::strcmp(value_env_p, "no") == 0 ||
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std::strcmp(value_env_p, "false") == 0);
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}
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inline bool IsEnvvarValueEnabled(const char* name)
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{
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const auto value_env_p = std::getenv(name);
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return value_env_p != nullptr &&
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(std::strcmp(value_env_p, "enable") == 0 || std::strcmp(value_env_p, "enabled") == 0 ||
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std::strcmp(value_env_p, "1") == 0 || std::strcmp(value_env_p, "yes") == 0 ||
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std::strcmp(value_env_p, "true") == 0);
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}
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// Return 0 if env is enabled else convert environment var to an int.
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// Supports hexadecimal with leading 0x or decimal
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inline unsigned long int EnvvarValue(const char* name, unsigned long int fallback = 0)
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{
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const auto value_env_p = std::getenv(name);
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if(value_env_p == nullptr)
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{
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return fallback;
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}
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else
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{
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return strtoul(value_env_p, nullptr, 0);
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}
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}
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inline std::vector<std::string> GetEnv(const char* name)
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{
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const auto p = std::getenv(name);
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if(p == nullptr)
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return {};
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else
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return {{p}};
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}
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template <class T>
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inline const char* GetStringEnv(T)
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{
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static const std::vector<std::string> result = GetEnv(T::value());
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if(result.empty())
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return nullptr;
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else
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return result.front().c_str();
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}
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template <class T>
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inline bool IsEnabled(T)
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{
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static const bool result = online_compile::IsEnvvarValueEnabled(T::value());
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return result;
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}
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template <class T>
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inline bool IsDisabled(T)
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{
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static const bool result = online_compile::IsEnvvarValueDisabled(T::value());
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return result;
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}
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template <class T>
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inline unsigned long int Value(T, unsigned long int fallback = 0)
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{
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static const auto result = online_compile::EnvvarValue(T::value(), fallback);
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return result;
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}
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} // namespace online_compile
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#endif
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