138 lines
3.5 KiB
C++
138 lines
3.5 KiB
C++
/**
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* @file llmessagethrottle.cpp
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* @brief LLMessageThrottle class used for throttling messages.
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*
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* Copyright (c) 2004-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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#include "linden_common.h"
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#include "llhash.h"
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#include "llmessagethrottle.h"
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#include "llframetimer.h"
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// This is used for the stl search_n function.
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bool eq_message_throttle_entry(LLMessageThrottleEntry a, LLMessageThrottleEntry b)
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{ return a.getHash() == b.getHash(); }
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const U64 SEC_TO_USEC = 1000000;
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// How long (in microseconds) each type of message stays in its throttle list.
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const U64 MAX_MESSAGE_AGE[MTC_EOF] =
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{
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10 * SEC_TO_USEC, // MTC_VIEWER_ALERT
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10 * SEC_TO_USEC // MTC_AGENT_ALERT
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};
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LLMessageThrottle::LLMessageThrottle()
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{
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}
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LLMessageThrottle::~LLMessageThrottle()
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{
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}
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void LLMessageThrottle::pruneEntries()
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{
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// Go through each message category, and prune entries older than max age.
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S32 cat;
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for (cat = 0; cat < MTC_EOF; cat++)
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{
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message_list_t* message_list = &(mMessageList[cat]);
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// Use a reverse iterator, since entries on the back will be the oldest.
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message_list_reverse_iterator_t r_iterator = message_list->rbegin();
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message_list_reverse_iterator_t r_last = message_list->rend();
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// Look for the first entry younger than the maximum age.
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F32 max_age = (F32)MAX_MESSAGE_AGE[cat];
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BOOL found = FALSE;
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while (r_iterator != r_last && !found)
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{
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if ( LLFrameTimer::getTotalTime() - (*r_iterator).getEntryTime() < max_age )
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{
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// We found a young enough entry.
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found = TRUE;
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// Did we find at least one entry to remove?
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if (r_iterator != message_list->rbegin())
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{
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// Yes, remove it.
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message_list->erase(r_iterator.base(), message_list->end());
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}
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}
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else
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{
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r_iterator++;
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}
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}
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// If we didn't find any entries young enough to keep, remove them all.
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if (!found)
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{
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message_list->clear();
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}
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}
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}
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BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const char* mesg)
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{
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message_list_t* message_list = &(mMessageList[MTC_VIEWER_ALERT]);
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// Concatenate from,to,mesg into one string.
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std::ostringstream full_mesg;
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full_mesg << to << mesg;
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// Create an entry for this message.
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size_t hash = llhash<const char*> (full_mesg.str().c_str());
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LLMessageThrottleEntry entry(hash, LLFrameTimer::getTotalTime());
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// Check if this message is already in the list.
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message_list_iterator_t found = std::search_n(message_list->begin(), message_list->end(),
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1, entry, eq_message_throttle_entry);
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if (found == message_list->end())
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{
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// This message was not found. Add it to the list.
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message_list->push_front(entry);
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return TRUE;
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}
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else
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{
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// This message was already in the list.
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return FALSE;
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}
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}
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BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, const char* mesg)
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{
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message_list_t* message_list = &(mMessageList[MTC_AGENT_ALERT]);
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// Concatenate from,to,mesg into one string.
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std::ostringstream full_mesg;
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full_mesg << agent << task << mesg;
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// Create an entry for this message.
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size_t hash = llhash<const char*> (full_mesg.str().c_str());
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LLMessageThrottleEntry entry(hash, LLFrameTimer::getTotalTime());
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// Check if this message is already in the list.
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message_list_iterator_t found = std::search_n(message_list->begin(), message_list->end(),
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1, entry, eq_message_throttle_entry);
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if (found == message_list->end())
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{
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// This message was not found. Add it to the list.
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message_list->push_front(entry);
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return TRUE;
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}
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else
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{
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// This message was already in the list.
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return FALSE;
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}
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}
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