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ThreadTimes.cpp
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ThreadTimes.cpp
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#include <iostream>
#include <fstream>
#include <iomanip>
#include "pin.H"
#include <time.h>
struct timespec start, end;
#define BILLION 1000000000L
PIN_LOCK lock;
INT32 numThreads = 0;
uint64_t clock_avg_t = 0;
ofstream OutFile;
static TLS_KEY tls_key;
// keep track of thread and mutex running time
class thread_data_t
{
public:
thread_data_t() : mtime(0), mcount(0) {}
uint64_t mtime;
struct timespec mstart, tstart, tend;
uint64_t mcount;
};
thread_data_t* get_tls(THREADID threadid)
{
thread_data_t* tdata =
static_cast<thread_data_t*>(PIN_GetThreadData(tls_key, threadid));
return tdata;
}
KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool",
"o", "threadtime.out", "specify output file name");
INT32 Usage()
{
cerr << "This tool prints the elapsed total, thread, and mutex time" << endl;
cerr << endl << KNOB_BASE::StringKnobSummary() << endl;
return -1;
}
VOID BeforeLock( THREADID threadid )
{
// OutFile << "Thread " << threadid << " is about to lock" << endl;
thread_data_t* tdata = get_tls(threadid);
clock_gettime(CLOCK_MONOTONIC, &tdata->mstart);
}
VOID AfterLock( THREADID threadid )
{
// OutFile << "Thread " << threadid << " is after lock" << endl;
thread_data_t* tdata = get_tls(threadid);
struct timespec mend;
clock_gettime(CLOCK_MONOTONIC, &mend);
tdata->mcount++;
tdata->mtime += (BILLION * (mend.tv_sec - tdata->mstart.tv_sec) + mend.tv_nsec - tdata->mstart.tv_nsec) - clock_avg_t;
}
// This routine is executed for each image.
VOID ImageLoad(IMG img, VOID *)
{
RTN rtn = RTN_FindByName(img, "pthread_mutex_lock");
if ( RTN_Valid( rtn ))
{
RTN_Open(rtn);
RTN_InsertCall(rtn, IPOINT_BEFORE, AFUNPTR(BeforeLock),
IARG_THREAD_ID, IARG_END);
RTN_InsertCall(rtn, IPOINT_AFTER, AFUNPTR(AfterLock),
IARG_THREAD_ID, IARG_END);
RTN_Close(rtn);
}
}
VOID Fini(INT32 code, VOID *v)
{
// Write to a file since cout and cerr maybe closed by the application
clock_gettime(CLOCK_MONOTONIC, &end);
uint64_t total_elapsed = BILLION * (end.tv_sec - start.tv_sec) + end.tv_nsec - start.tv_nsec;
//OutFile << "Total elapsed time: " << total_elapsed << endl;
uint64_t m_elapsed;
OutFile << setw(7) << "Thread " << setw(15) << "% of runtime " << setw(21) << "% waiting for a lock" << endl;
for (INT32 t = 0; t < numThreads; t++)
{
thread_data_t* tdata = get_tls(t);
m_elapsed = BILLION * (tdata->tend.tv_sec - tdata->tstart.tv_sec) + tdata->tend.tv_nsec - tdata->tstart.tv_nsec;
/* OutFile << "Thread : " << t << " elapsed time: " << m_elapsed << " (" << setprecision(2) << ((double) m_elapsed / (double)total_elapsed) * 100.00 << "%)" \
<< " lock time: " << tdata->mtime << " (" << setprecision(2) << ((double)tdata->mtime / (double)m_elapsed) * 100.00 << "%)" << endl;
*/
OutFile << setw(6) << t << setw(15) << setprecision(2) << ((double) m_elapsed / (double)total_elapsed) * 100.00 << setw(22) << setprecision(2) << ((double)tdata->mtime / (double)m_elapsed) * 100.00 <<endl;
}
OutFile.close();
}
VOID ThreadStart(THREADID threadid, CONTEXT *ctxt, INT32 flags, VOID *v)
{
PIN_GetLock(&lock, threadid+1);
numThreads++;
PIN_ReleaseLock(&lock);
thread_data_t* tdata = new thread_data_t;
clock_gettime(CLOCK_MONOTONIC, &tdata->tstart);
PIN_SetThreadData(tls_key, tdata, threadid);
}
VOID ThreadFini(THREADID threadid, const CONTEXT *ctxt, INT32 code, VOID *v)
{
thread_data_t* tdata = get_tls(threadid);
clock_gettime(CLOCK_MONOTONIC, &tdata->tend);
}
VOID calcAvgTimes()
{
struct timespec tmp;
clock_gettime(CLOCK_MONOTONIC, &start);
for(int i = 0; i<100; i++)
{
clock_gettime(CLOCK_MONOTONIC, &tmp);
}
clock_gettime(CLOCK_MONOTONIC, &end);
clock_avg_t = BILLION * (end.tv_sec - start.tv_sec) + end.tv_nsec - start.tv_nsec;
clock_avg_t = clock_avg_t / 100.0;
clock_gettime(CLOCK_MONOTONIC, &start);
for(int i = 0; i<100; i++)
{
uint64_t tmp = 0;
tmp += (BILLION * (end.tv_sec - start.tv_sec) + end.tv_nsec - start.tv_nsec) - clock_avg_t;
}
clock_gettime(CLOCK_MONOTONIC, &end);
uint64_t inst_avg_time = BILLION * (end.tv_sec - start.tv_sec) + end.tv_nsec - start.tv_nsec;
inst_avg_time = inst_avg_time / 100.0;
clock_avg_t = 2 * clock_avg_t + inst_avg_time;
}
int main(int argc, char * argv[])
{
// Initialize pin
if (PIN_Init(argc, argv)) return Usage();
PIN_InitSymbols();
OutFile.open(KnobOutputFile.Value().c_str());
// Initialize the lock
PIN_InitLock(&lock);
// Obtain a key for TLS storage.
tls_key = PIN_CreateThreadDataKey(0);
// Register ImageLoad to be called when each image is loaded.
IMG_AddInstrumentFunction(ImageLoad, 0);
// Register Analysis routines to be called when a thread begins/ends
PIN_AddThreadStartFunction(ThreadStart, 0);
PIN_AddThreadFiniFunction(ThreadFini, 0);
// Register Fini to be called when the application exits
PIN_AddFiniFunction(Fini, 0);
//c
calcAvgTimes();
clock_gettime(CLOCK_MONOTONIC, &start);
thread_data_t* tdata = new thread_data_t;
clock_gettime(CLOCK_MONOTONIC, &tdata->tstart);
// Start the program, never returns
PIN_StartProgram();
return 0;
}