src/gallium/drivers/swr/rasterizer/common/rdtsc_buckets.cpp

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  23 * @file rdtsc_buckets.cpp
  24 *
  25 * @brief implementation of rdtsc buckets.
  26 *
  27 * Notes:
  28 *
  29 ******************************************************************************/
  30 #include "rdtsc_buckets.h"
  31 #include <inttypes.h>
  32
  33 #if defined(_WIN32)
  34 #define PATH_SEPARATOR "\\"
  35 #elif defined(__unix__) || defined(__APPLE__)
  36 #define PATH_SEPARATOR "/"
  37 #else
  38 #error "Unsupported platform"
  39 #endif
  40
  41 THREAD UINT tlsThreadId = 0;
  42
  43 BucketManager::~BucketManager()
  44 {
  45 }
  46
  47 void BucketManager::RegisterThread(const std::string& name)
  48 {
  49
  50     BUCKET_THREAD newThread;
  51     newThread.name = name;
  52     newThread.root.children.reserve(mBuckets.size());
  53     newThread.root.id = 0;
  54     newThread.root.pParent = nullptr;
  55     newThread.pCurrent = &newThread.root;
  56
  57     mThreadMutex.lock();
  58
  59     // assign unique thread id for this thread
  60     size_t id = mThreads.size();
  61     newThread.id = (UINT)id;
  62     tlsThreadId = (UINT)id;
  63
  64     // store new thread
  65     mThreads.push_back(newThread);
  66
  67     mThreadMutex.unlock();
  68 }
  69
  70 UINT BucketManager::RegisterBucket(const BUCKET_DESC& desc)
  71 {
  72     mThreadMutex.lock();
  73     size_t id = mBuckets.size();
  74     mBuckets.push_back(desc);
  75     mThreadMutex.unlock();
  76     return (UINT)id;
  77 }
  78
  79 void BucketManager::PrintBucket(FILE* f, UINT level, uint64_t threadCycles, uint64_t parentCycles, const BUCKET& bucket)
  80 {
  81     const char *arrows[] = {
  82         "",
  83         "|-> ",
  84         "    |-> ",
  85         "        |-> ",
  86         "            |-> ",
  87         "                |-> ",
  88         "                    |-> ",
  89         "                        |-> ",
  90         "                            |-> ",
  91     };
  92
  93     // compute percent of total cycles used by this bucket
  94     float percentTotal = (float)((double)bucket.elapsed / (double)threadCycles * 100.0);
  95
  96     // compute percent of parent cycles used by this bucket
  97     float percentParent = (float)((double)bucket.elapsed / (double)parentCycles * 100.0);
  98
  99     // compute average cycle count per invocation
 100     uint64_t CPE = bucket.elapsed / bucket.count;
 101
 102     BUCKET_DESC &desc = mBuckets[bucket.id];
 103
 104     // construct hierarchy visualization
 105     char hier[80];
 106     strcpy(hier, arrows[level]);
 107     strcat(hier, desc.name.c_str());
 108
 109     // print out
 110     fprintf(f, "%6.2f %6.2f %-10" PRIu64 " %-10" PRIu64 " %-10u %-10lu %-10u %s\n",
 111         percentTotal,
 112         percentParent,
 113         bucket.elapsed,
 114         CPE,
 115         bucket.count,
 116         (unsigned long)0,
 117         (uint32_t)0,
 118         hier
 119     );
 120
 121     // dump all children of this bucket
 122     for (const BUCKET& child : bucket.children)
 123     {
 124         if (child.count)
 125         {
 126             PrintBucket(f, level + 1, threadCycles, bucket.elapsed, child);
 127         }
 128     }
 129 }
 130
 131 void BucketManager::PrintThread(FILE* f, const BUCKET_THREAD& thread)
 132 {
 133     // print header
 134     fprintf(f, "\nThread %u (%s)\n", thread.id, thread.name.c_str());
 135     fprintf(f, " %%Tot   %%Par  Cycles     CPE        NumEvent   CPE2       NumEvent2  Bucket\n");
 136
 137     // compute thread level total cycle counts across all buckets from root
 138     const BUCKET& root = thread.root;
 139     uint64_t totalCycles = 0;
 140     for (const BUCKET& child : root.children)
 141     {
 142         totalCycles += child.elapsed;
 143     }
 144
 145     for (const BUCKET& child : root.children)
 146     {
 147         if (child.count)
 148         {
 149             PrintBucket(f, 0, totalCycles, totalCycles, child);
 150         }
 151     }
 152 }
 153
 154 void BucketManager::PrintReport(const std::string& filename)
 155 {
 156     {
 157         FILE* f = fopen(filename.c_str(), "w");
 158
 159         mThreadMutex.lock();
 160         for (const BUCKET_THREAD& thread : mThreads)
 161         {
 162             PrintThread(f, thread);
 163             fprintf(f, "\n");
 164         }
 165
 166         mThreadMutex.unlock();
 167
 168         fclose(f);
 169     }
 170 }
 171
 172
 173 void BucketManager::StartCapture()
 174 {
 175
 176     printf("Capture Starting\n");
 177
 178     mCapturing = true;
 179 }
 180
 181 void BucketManager_StartBucket(BucketManager* pBucketMgr, uint32_t id)
 182 {
 183     pBucketMgr->StartBucket(id);
 184 }
 185
 186 void BucketManager_StopBucket(BucketManager* pBucketMgr, uint32_t id)
 187 {
 188     pBucketMgr->StopBucket(id);
 189 }