diff options
Diffstat (limited to 'indra/newview/llviewerassetstats.cpp')
| -rw-r--r-- | indra/newview/llviewerassetstats.cpp | 87 |
1 files changed, 79 insertions, 8 deletions
diff --git a/indra/newview/llviewerassetstats.cpp b/indra/newview/llviewerassetstats.cpp index 37e7c43f36..09c0364f09 100644 --- a/indra/newview/llviewerassetstats.cpp +++ b/indra/newview/llviewerassetstats.cpp @@ -37,6 +37,35 @@ #include "stdtypes.h" /* + * Classes and utility functions for per-thread and per-region + * asset and experiential metrics to be aggregated grid-wide. + * + * The basic metrics grouping is LLViewerAssetStats::PerRegionStats. + * This provides various counters and simple statistics for asset + * fetches binned into a few categories. One of these is maintained + * for each region encountered and the 'current' region is available + * as a simple reference. Each thread (presently two) interested + * in participating in these stats gets an instance of the + * LLViewerAssetStats class so that threads are completely + * independent. + * + * The idea of a current region is used for simplicity and speed + * of categorization. Each metrics event could have taken a + * region uuid argument resulting in a suitable lookup. Arguments + * against this design include: + * + * - Region uuid not trivially available to caller. + * - Cost (cpu, disruption in real work flow) too high. + * - Additional precision not really meaningful. + * + * By itself, the LLViewerAssetStats class is thread- and + * viewer-agnostic and can be used anywhere without assumptions + * of global pointers and other context. For the viewer, + * a set of free functions are provided in the namespace + * LLViewerAssetStatsFF which *do* implement viewer-native + * policies about per-thread globals and will do correct + * defensive tests of same. + * * References * * Project: @@ -103,7 +132,7 @@ LLViewerAssetStats::reset() mRegionStats.clear(); // If we have a current stats, reset it, otherwise, as at construction, - // create a new one. + // create a new one as we must always have a current stats block. if (mCurRegionStats) { mCurRegionStats->reset(); @@ -130,7 +159,7 @@ LLViewerAssetStats::setRegionID(const LLUUID & region_id) PerRegionContainer::iterator new_stats = mRegionStats.find(region_id); if (mRegionStats.end() == new_stats) { - // Haven't seen this region_id before, create a new block make it current. + // Haven't seen this region_id before, create a new block and make it current. mCurRegionStats = new PerRegionStats(region_id); mRegionStats[region_id] = mCurRegionStats; } @@ -159,7 +188,7 @@ LLViewerAssetStats::recordGetDequeued(LLViewerAssetType::EType at, bool with_htt } void -LLViewerAssetStats::recordGetServiced(LLViewerAssetType::EType at, bool with_http, bool is_temp, F64 duration) +LLViewerAssetStats::recordGetServiced(LLViewerAssetType::EType at, bool with_http, bool is_temp, duration_t duration) { const EViewerAssetCategories eac(asset_type_to_category(at, with_http, is_temp)); @@ -213,9 +242,9 @@ LLViewerAssetStats::asLLSD() const slot[enq_tag] = LLSD(S32(stats.mRequests[i].mEnqueued.getCount())); slot[deq_tag] = LLSD(S32(stats.mRequests[i].mDequeued.getCount())); slot[rcnt_tag] = LLSD(S32(stats.mRequests[i].mResponse.getCount())); - slot[rmin_tag] = LLSD(stats.mRequests[i].mResponse.getMin()); - slot[rmax_tag] = LLSD(stats.mRequests[i].mResponse.getMax()); - slot[rmean_tag] = LLSD(stats.mRequests[i].mResponse.getMean()); + slot[rmin_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMin())); + slot[rmax_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMax())); + slot[rmean_tag] = LLSD(F64(stats.mRequests[i].mResponse.getMean())); } ret[it->first.asString()] = reg_stat; @@ -231,9 +260,24 @@ LLViewerAssetStats::asLLSD() const namespace LLViewerAssetStatsFF { +// // Target thread is elaborated in the function name. This could // have been something 'templatey' like specializations iterated // over a set of constants but with so few, this is clearer I think. +// +// As for the threads themselves... rather than do fine-grained +// locking as we gather statistics, this code creates a collector +// for each thread, allocated and run independently. Logging +// happens at relatively infrequent intervals and at that time +// the data is sent to a single thread to be aggregated into +// a single entity with locks, thread safety and other niceties. +// +// A particularly fussy implementation would distribute the +// per-thread pointers across separate cache lines. But that should +// be beyond current requirements. +// + +// 'main' thread - initial program thread void set_region_main(const LLUUID & region_id) @@ -263,7 +307,7 @@ record_dequeue_main(LLViewerAssetType::EType at, bool with_http, bool is_temp) } void -record_response_main(LLViewerAssetType::EType at, bool with_http, bool is_temp, F64 duration) +record_response_main(LLViewerAssetType::EType at, bool with_http, bool is_temp, LLViewerAssetStats::duration_t duration) { if (! gViewerAssetStatsMain) return; @@ -272,6 +316,8 @@ record_response_main(LLViewerAssetType::EType at, bool with_http, bool is_temp, } +// 'thread1' - should be for TextureFetch thread + void set_region_thread1(const LLUUID & region_id) { @@ -300,7 +346,7 @@ record_dequeue_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp } void -record_response_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp, F64 duration) +record_response_thread1(LLViewerAssetType::EType at, bool with_http, bool is_temp, LLViewerAssetStats::duration_t duration) { if (! gViewerAssetStatsThread1) return; @@ -308,6 +354,31 @@ record_response_thread1(LLViewerAssetType::EType at, bool with_http, bool is_tem gViewerAssetStatsThread1->recordGetServiced(at, with_http, is_temp, duration); } + +void +init() +{ + if (! gViewerAssetStatsMain) + { + gViewerAssetStatsMain = new LLViewerAssetStats; + } + if (! gViewerAssetStatsThread1) + { + gViewerAssetStatsThread1 = new LLViewerAssetStats; + } +} + +void +cleanup() +{ + delete gViewerAssetStatsMain; + gViewerAssetStatsMain = 0; + + delete gViewerAssetStatsThread1; + gViewerAssetStatsThread1 = 0; +} + + } // namespace LLViewerAssetStatsFF |