coreclr/src/utilcode/configuration.cpp at master · dotnet/coreclr · GitHub

Name: coreclr/src/utilcode/configuration.cpp at master · dotnet/coreclr · GitHub
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
// --------------------------------------------------------------------------------------------------
// configuration.cpp
//
//
// Access and update configuration values, falling back on legacy CLRConfig methods where necessary.
//
// --------------------------------------------------------------------------------------------------

#include"stdafx.h"

#include"clrconfig.h"
#include"configuration.h"

LPCWSTR *knobNames = nullptr;
LPCWSTR *knobValues = nullptr;
int numberOfKnobs = 0;

voidConfiguration::InitializeConfigurationKnobs(int numberOfConfigs, LPCWSTR *names, LPCWSTR *values)
{
 numberOfKnobs = numberOfConfigs;

// Neither should be null, or both should be null
_ASSERT(!((names == nullptr) ^ (values == nullptr)));

 knobNames = names;
 knobValues = values;
}

static LPCWSTR GetConfigurationValue(LPCWSTR name)
{
_ASSERT(name != nullptr);
if (name == nullptr || knobNames == nullptr || knobValues == nullptr)
 {
returnnullptr;
 }

for (int i = 0; i < numberOfKnobs; ++i)
 {
_ASSERT(knobNames[i] != nullptr);
if (wcscmp(name, knobNames[i]) == 0)
 {
return knobValues[i];
 }
 }

returnnullptr;
}

DWORD Configuration::GetKnobDWORDValue(LPCWSTR name, const CLRConfig::ConfigDWORDInfo& dwordInfo)
{
bool returnedDefaultValue;
 DWORD legacyValue = CLRConfig::GetConfigValue(dwordInfo, true/* acceptExplicitDefaultFromRegutil */, &returnedDefaultValue);
if (!returnedDefaultValue)
 {
return legacyValue;
 }

 LPCWSTR knobValue = GetConfigurationValue(name);
if (knobValue != nullptr)
 {
returnwcstoul(knobValue, nullptr, 0);
 }

return legacyValue;
}

DWORD Configuration::GetKnobDWORDValue(LPCWSTR name, DWORD defaultValue)
{
 LPCWSTR knobValue = GetConfigurationValue(name);
if (knobValue != nullptr)
 {
returnwcstoul(knobValue, nullptr, 0);
 }

return defaultValue;
}

ULONGLONG Configuration::GetKnobULONGLONGValue(LPCWSTR name)
{
 LPCWSTR knobValue = GetConfigurationValue(name);
if (knobValue != nullptr)
 {
return_wcstoui64(knobValue, nullptr, 0);
 }

return0;
}

LPCWSTR Configuration::GetKnobStringValue(LPCWSTR name, const CLRConfig::ConfigStringInfo& stringInfo)
{
 LPCWSTR value = CLRConfig::GetConfigValue(stringInfo);
if (value == nullptr)
 {
 value = GetConfigurationValue(name);
 }

return value;
}

LPCWSTR Configuration::GetKnobStringValue(LPCWSTR name)
{
returnGetConfigurationValue(name);
}

boolConfiguration::GetKnobBooleanValue(LPCWSTR name, const CLRConfig::ConfigDWORDInfo& dwordInfo)
{
bool returnedDefaultValue;
 DWORD legacyValue = CLRConfig::GetConfigValue(dwordInfo, true/* acceptExplicitDefaultFromRegutil */, &returnedDefaultValue);
if (!returnedDefaultValue)
 {
return (legacyValue != 0);
 }

 LPCWSTR knobValue = GetConfigurationValue(name);
if (knobValue != nullptr)
 {
return (wcscmp(knobValue, W("true")) == 0);
 }

return (legacyValue != 0);
}

boolConfiguration::GetKnobBooleanValue(LPCWSTR name, bool defaultValue)
{
 LPCWSTR knobValue = GetConfigurationValue(name);
if (knobValue != nullptr)
 {
return (wcscmp(knobValue, W("true")) == 0);
 }

return defaultValue;
}