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102 lines
2.8 KiB
102 lines
2.8 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <stdio.h>
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#include <set>
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#include "pin.H"
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using std::set;
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using std::string;
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KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool", "o", "thread_count.out", "Output file");
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FILE * out;
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PIN_LOCK pinLock;
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INT32 threadCreated = 0;
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INT32 threadEnded = 0;
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THREADID myThread = INVALID_THREADID;
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set<THREADID> appThreads;
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static VOID AppThreadStart(THREADID threadIndex)
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{
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PIN_GetLock(&pinLock, PIN_GetTid());
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threadCreated++;
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appThreads.insert(threadIndex);
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PIN_ReleaseLock(&pinLock);
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}
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VOID ThreadStart(THREADID threadid, CONTEXT *ctxt, INT32 flags, VOID *v)
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{
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if (myThread == INVALID_THREADID)
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{
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// We will execute this code only once, and we are assuming that this is for the main thread or
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// at least NOT one of the threads that the application created with CreateThread().
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// We are registering this additional thread because ThreadFini is called for all threads including the main thread.
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myThread = threadid;
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AppThreadStart(threadid);
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}
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}
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VOID ThreadFini(THREADID threadid, const CONTEXT *ctxt, INT32 code, VOID *v)
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{
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// Use the Pin lock to protect writes to appThreads between this callback function and the analysis routine AppThreadStart
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PIN_GetLock(&pinLock, PIN_GetTid());
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set<THREADID>::iterator it = appThreads.find(threadid);
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if (it != appThreads.end())
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{
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threadEnded++;
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appThreads.erase(it);
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}
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PIN_ReleaseLock(&pinLock);
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}
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VOID Fini(INT32 code, VOID *v)
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{
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fprintf(out, "Number of threads created - %d\n", (int)threadCreated);
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fprintf(out, "Number of threads terminated - %d\n", (int)threadEnded);
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fclose(out);
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}
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static VOID InstrumentImg(IMG img, VOID *)
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{
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if (IMG_IsMainExecutable(img))
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{
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RTN rtn = RTN_FindByName(img, "ThreadRoutine");
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if (RTN_Valid(rtn))
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{
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RTN_Open(rtn);
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RTN_InsertCall(rtn, IPOINT_BEFORE, AFUNPTR(AppThreadStart), IARG_THREAD_ID, IARG_END);
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RTN_Close(rtn);
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}
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}
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}
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int main(INT32 argc, CHAR **argv)
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{
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PIN_Init(argc, argv);
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PIN_InitLock(&pinLock);
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out = fopen(KnobOutputFile.Value().c_str(), "w");
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PIN_InitSymbols();
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IMG_AddInstrumentFunction(InstrumentImg, NULL);
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PIN_AddThreadStartFunction(ThreadStart, NULL);
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PIN_AddThreadFiniFunction(ThreadFini, NULL);
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PIN_AddFiniFunction(Fini, NULL);
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// Never returns
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PIN_StartProgram();
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return 0;
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}
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