C++ (Cpp) memContextSwitch示例

示例#1

文件： protocol.c 项目： pgbackrest/pgbackrest

/***********************************************************************************************************************************
Get option values from another process
***********************************************************************************************************************************/
VariantList *
configProtocolOption(ProtocolClient *client, const VariantList *paramList)
{
    FUNCTION_LOG_BEGIN(logLevelTrace);
        FUNCTION_LOG_PARAM(PROTOCOL_CLIENT, client);
        FUNCTION_LOG_PARAM(VARIANT_LIST, paramList);
    FUNCTION_LOG_END();

    VariantList *result = NULL;

    MEM_CONTEXT_TEMP_BEGIN()
    {
        ProtocolCommand *command = protocolCommandNew(PROTOCOL_COMMAND_CONFIG_OPTION_STR);

        for (unsigned int paramIdx = 0; paramIdx < varLstSize(paramList); paramIdx++)
            protocolCommandParamAdd(command, varLstGet(paramList, paramIdx));

        memContextSwitch(MEM_CONTEXT_OLD());
        result = varVarLst(protocolClientExecute(client, command, true));
        memContextSwitch(MEM_CONTEXT_TEMP());
    }
    MEM_CONTEXT_TEMP_END();

    FUNCTION_LOG_RETURN(VARIANT_LIST, result);
}

示例#2

文件： config.c 项目： cmwshang/pgbackrest

/***********************************************************************************************************************************
Build JSON output from options
***********************************************************************************************************************************/
String *
perlOptionJson(void)
{
    FUNCTION_TEST_VOID();

    String *result = NULL;

    MEM_CONTEXT_TEMP_BEGIN()
    {
        KeyValue *configKv = kvNew();

        for (ConfigOption optionId = 0; optionId < CFG_OPTION_TOTAL; optionId++)
        {
            // Skip if not valid
            if (!cfgOptionValid(optionId))
                continue;

            Variant *optionVar = varNewKv(kvNew());

            // Add valid
            kvPut(varKv(optionVar), VARSTRDEF("valid"), BOOL_TRUE_VAR);

            // Add source
            const Variant *source = NULL;

            switch (cfgOptionSource(optionId))
            {
                case cfgSourceParam:
                {
                    source = VARSTRDEF("param");
                    break;
                }

                case cfgSourceConfig:
                {
                    source = VARSTRDEF("config");
                    break;
                }

                case cfgSourceDefault:
                {
                    source = VARSTRDEF("default");
                    break;
                }
            }

            kvPut(varKv(optionVar), VARSTRDEF("source"), source);

            // Add negate and reset
            kvPut(varKv(optionVar), VARSTRDEF("negate"), VARBOOL(cfgOptionNegate(optionId)));
            kvPut(varKv(optionVar), VARSTRDEF("reset"), VARBOOL(cfgOptionReset(optionId)));

            // Add value if it is set
            if (cfgOptionTest(optionId))
            {
                const Variant *valueVar = NULL;

                switch (cfgDefOptionType(cfgOptionDefIdFromId(optionId)))
                {
                    case cfgDefOptTypeBoolean:
                    case cfgDefOptTypeFloat:
                    case cfgDefOptTypeInteger:
                    case cfgDefOptTypePath:
                    case cfgDefOptTypeSize:
                    case cfgDefOptTypeString:
                    {
                        valueVar = cfgOption(optionId);
                        break;
                    }

                    case cfgDefOptTypeHash:
                    {
                        valueVar = varNewKv(kvNew());

                        const KeyValue *valueKv = cfgOptionKv(optionId);
                        const VariantList *keyList = kvKeyList(valueKv);

                        for (unsigned int listIdx = 0; listIdx < varLstSize(keyList); listIdx++)
                            kvPut(varKv(valueVar), varLstGet(keyList, listIdx), kvGet(valueKv, varLstGet(keyList, listIdx)));

                        break;
                    }

                    case cfgDefOptTypeList:
                    {
                        valueVar = varNewKv(kvNew());

                        const VariantList *valueList = cfgOptionLst(optionId);

                        for (unsigned int listIdx = 0; listIdx < varLstSize(valueList); listIdx++)
                            kvPut(varKv(valueVar), varLstGet(valueList, listIdx), BOOL_TRUE_VAR);

                        break;
                    }
                }

                kvPut(varKv(optionVar), VARSTRDEF("value"), valueVar);
            }

            kvPut(configKv, VARSTRZ(cfgOptionName(optionId)), optionVar);
        }

        memContextSwitch(MEM_CONTEXT_OLD());
        result = jsonFromKv(configKv, 0);
        memContextSwitch(MEM_CONTEXT_TEMP());
    }
    MEM_CONTEXT_TEMP_END();

    FUNCTION_TEST_RETURN(result);
}