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#ifndef NULLSOFT_UTILITY_RENTRYH
#define NULLSOFT_UTILITY_RENTRYH
#include <string>
namespace Nullsoft
{
namespace Utility
{
class ReEntryGuard
{
public:
ReEntryGuard() : entered(false)
{}
bool FunctionCall(std::string funcName = "Unknown")
{
if (entered)
{
char errorMsg[256];
sprintf(errorMsg, "%s branched to %s", firstFunc.c_str(), funcName.c_str());
::MessageBox(NULL, errorMsg, "Class ReEntry error", MB_OK);
return false;
}
else
{
firstFunc = funcName;
entered = true;
return true;
}
}
void LeaveFunction()
{
entered = false;
firstFunc = "";
}
private:
bool entered;
std::string firstFunc;
};
class ReEntry
{
public:
ReEntry(ReEntryGuard &_entry, std::string funcName = "Unknown") : entry(&_entry)
{
entry->FunctionCall(funcName);
}
~ReEntry()
{
entry->LeaveFunction();
}
private:
ReEntryGuard *entry;
};
}
}
#endif
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