CWE-ou-minkata/Sources/Plasma/NucleusLib/pnNetLog/pnNlApi.cpp

/*==LICENSE==*

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*==LICENSE==*/
/*****************************************************************************
*
*   $/Plasma20/Sources/Plasma/NucleusLib/pnNetLog/pnNlApi.cpp
*   
***/

#include "Pch.h"
#pragma hdrstop


/*****************************************************************************
*
*   Private Data
*
***/

struct EventHash {
    unsigned    eventType;
    ESrvType    srvType;

    inline EventHash (
        unsigned    eventType,
        ESrvType    srvType
    );

    inline uint32_t GetHash () const;
    inline bool operator== (const EventHash & rhs) const;
};

struct NetLogEventHash : EventHash {
    const NetLogEvent *             event;

    NetLogEventHash(
        unsigned    eventType,
        ESrvType    srvType,
        const NetLogEvent *event
    );
    HASHLINK(NetLogEventHash)   link;   
};

static CCritSect        s_critsect;
static ESrvType         s_srvType;
static HASHTABLEDECL(NetLogEventHash, EventHash, link) s_registeredEvents; 


/*****************************************************************************
*
*   NetLogEventHash
*
***/

//============================================================================
NetLogEventHash::NetLogEventHash (
    unsigned    eventType,
    ESrvType    srvType,
    const NetLogEvent *event
) : EventHash(eventType, srvType),
    event(event)
{
}


/*****************************************************************************
*
*   Event Hash
*
***/

//============================================================================
inline EventHash::EventHash (
    unsigned    eventType,
    ESrvType    srvType
) : eventType(eventType)
,   srvType(srvType)
{
}

//============================================================================
inline uint32_t EventHash::GetHash () const {
    CHashValue hash(this, sizeof(*this));
    return hash.GetHash();
}

//============================================================================
inline bool EventHash::operator== (const EventHash & rhs) const {
    return  
        eventType == rhs.eventType &&
        srvType    == rhs.srvType;
}
/*****************************************************************************
*
*   Private Functions
*
***/

//============================================================================
static void NetLogUnRegisterEvents () {
    HASHTABLEDECL(NetLogEventHash, EventHash, link) tempHashTable;
    s_critsect.Enter();
    {
        while(NetLogEventHash *hash = s_registeredEvents.Head()) {
            tempHashTable.Add(hash);
        }
    }
    s_critsect.Leave();

    while(NetLogEventHash *hash = tempHashTable.Head()) {
        delete hash;
    }
}


/*****************************************************************************
*
*   Public Functions
*
***/

//============================================================================
void NetLogInitialize (ESrvType srvType) {
    s_srvType = srvType;
    if(s_srvType == kSrvTypeLog)
        NetLogSrvInitialize();
    else 
        NetLogCliInitialize(srvType);
}

//============================================================================
void NetLogShutdown () {
    if(s_srvType == kSrvTypeLog)
        NetLogSrvShutdown();
    else
        NetLogCliShutdown();
    NetLogUnRegisterEvents();   
}

//============================================================================
void NetLogDestroy () {
    if(s_srvType == kSrvTypeLog)
        NetLogSrvDestroy();
    else 
        NetLogCliDestroy();
}

//============================================================================
void NetLogRegisterEvents (const NetLogEvent events[], unsigned count) {
    NetLogEventHash *hash;
    HASHTABLEDECL(NetLogEventHash, EventHash, link) tempHashTable;

    for(unsigned i = 0; i < count; ++i) {
        hash = new NetLogEventHash(events[i].logEventType, events[i].srvType, &events[i]);
        tempHashTable.Add(hash);
    }
    s_critsect.Enter();
    {
        while(NetLogEventHash *hash = tempHashTable.Head()) {
            s_registeredEvents.Add(hash);
        }
    }
    s_critsect.Leave();
}

//============================================================================
const NetLogEvent *NetLogFindEvent (unsigned type, ESrvType srvType) {
    NetLogEventHash *hash;
    s_critsect.Enter();
    {
        hash = s_registeredEvents.Find(EventHash(type, srvType));
    }
    s_critsect.Leave();
    return hash ? hash->event : nil;
}

//============================================================================
void NetLogSendEvent (
    unsigned type
    ...
) {
    const NetLogEvent *event = NetLogFindEvent(type, s_srvType);

    if(event) {
        va_list args;
        va_start(args, type);
        NetLogCliSendEvent(*event, args);
        va_end(args);
    }
    else {
        LogMsg( kLogError, "unable to log event, event not found SrvType: %d EventType: %d.", s_srvType, type);
    }
}