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(
  80     FILE* f, UINT level, uint64_t threadCycles, uint64_t parentCycles, const BUCKET& bucket)
  81 {
  82     const char* arrows[] = {
  83         "",
  84         "|-> ",
  85         "    |-> ",
  86         "        |-> ",
  87         "            |-> ",
  88         "                |-> ",
  89         "                    |-> ",
  90         "                        |-> ",
  91         "                            |-> ",
  92     };
  93
  94     // compute percent of total cycles used by this bucket
  95     float percentTotal = (float)((double)bucket.elapsed / (double)threadCycles * 100.0);
  96
  97     // compute percent of parent cycles used by this bucket
  98     float percentParent = (float)((double)bucket.elapsed / (double)parentCycles * 100.0);
  99
 100     // compute average cycle count per invocation
 101     uint64_t CPE = bucket.elapsed / bucket.count;
 102
 103     BUCKET_DESC& desc = mBuckets[bucket.id];
 104
 105     // construct hierarchy visualization
 106     char hier[80];
 107     strcpy(hier, arrows[level]);
 108     strcat(hier, desc.name.c_str());
 109
 110     // print out
 111     fprintf(f,
 112             "%6.2f %6.2f %-10" PRIu64 " %-10" PRIu64 " %-10u %-10lu %-10u %s\n",
 113             percentTotal,
 114             percentParent,
 115             bucket.elapsed,
 116             CPE,
 117             bucket.count,
 118             (unsigned long)0,
 119             (uint32_t)0,
 120             hier);
 121
 122     // dump all children of this bucket
 123     for (const BUCKET& child : bucket.children)
 124     {
 125         if (child.count)
 126         {
 127             PrintBucket(f, level + 1, threadCycles, bucket.elapsed, child);
 128         }
 129     }
 130 }
 131
 132 void BucketManager::PrintThread(FILE* f, const BUCKET_THREAD& thread)
 133 {
 134     // print header
 135     fprintf(f, "\nThread %u (%s)\n", thread.id, thread.name.c_str());
 136     fprintf(f, " %%Tot   %%Par  Cycles     CPE        NumEvent   CPE2       NumEvent2  Bucket\n");
 137
 138     // compute thread level total cycle counts across all buckets from root
 139     const BUCKET& root        = thread.root;
 140     uint64_t      totalCycles = 0;
 141     for (const BUCKET& child : root.children)
 142     {
 143         totalCycles += child.elapsed;
 144     }
 145
 146     for (const BUCKET& child : root.children)
 147     {
 148         if (child.count)
 149         {
 150             PrintBucket(f, 0, totalCycles, totalCycles, child);
 151         }
 152     }
 153 }
 154
 155 void BucketManager::PrintReport(const std::string& filename)
 156 {
 157     {
 158         FILE* f = fopen(filename.c_str(), "w");
 159
 160         mThreadMutex.lock();
 161         for (const BUCKET_THREAD& thread : mThreads)
 162         {
 163             PrintThread(f, thread);
 164             fprintf(f, "\n");
 165         }
 166
 167         mThreadMutex.unlock();
 168
 169         fclose(f);
 170     }
 171 }
 172
 173
 174 void BucketManager::StartCapture()
 175 {
 176
 177     printf("Capture Starting\n");
 178
 179     mCapturing = true;
 180 }
 181
 182 void BucketManager_StartBucket(BucketManager* pBucketMgr, uint32_t id)
 183 {
 184     pBucketMgr->StartBucket(id);
 185 }
 186
 187 void BucketManager_StopBucket(BucketManager* pBucketMgr, uint32_t id)
 188 {
 189     pBucketMgr->StopBucket(id);
 190 }