error_context.cpp

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#include "ed/error_context.h"
 
#include <pthread.h>
#include <iostream>
 
namespace ed
{
 
// ----------------------------------------------------------------------------------------------------
 
namespace
{
 
void dataDestructor(void* data)
{
    ErrorContextData* edata = static_cast<ErrorContextData*>(data);
    delete edata;
}
 
struct KeyHolder
{
 
    KeyHolder() {
        pthread_key_create(&key, &dataDestructor);
    }
 
    pthread_key_t key;
 
};
 
    static KeyHolder key;
 
}
 
// ----------------------------------------------------------------------------------------------------
 
ErrorContext::ErrorContext(const char* msg, const char* value)
{
    ErrorContextData* _data = data();
    if (!_data)
    {
        _data = new ErrorContextData;
        pthread_setspecific(key.key, _data);
    }
 
    _data->stack.push_back(std::pair<const char*, const char*>(msg, value));
 
}
 
ErrorContext::~ErrorContext()
{
    ErrorContextData* _data = data();
    if (!_data)
        return;
 
    _data->stack.pop_back();
}
 
void ErrorContext::change(const char* msg, const char* value)
{
    ErrorContextData* _data = data();
    _data->stack.back() = std::pair<const char*, const char*>(msg, value);
}
 
ErrorContextData* ErrorContext::data()
{
    return static_cast<ErrorContextData*>(pthread_getspecific(key.key));
}
 
}