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125 lines
3.2 KiB
125 lines
3.2 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 "pin.H"
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#include <stdio.h>
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#include <stdlib.h>
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#include <iostream>
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#include <fstream>
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using std::ios_base;
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using std::ofstream;
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using std::cerr;
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using std::string;
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using std::endl;
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/* ===================================================================== */
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KNOB<string> KnobOutputFile(KNOB_MODE_WRITEONCE, "pintool",
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"o", "fork_probed2.out", "specify file name");
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ofstream Out;
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void (*free_memory_ptr)(void) = NULL;
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/* ===================================================================== */
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INT32 Usage()
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{
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cerr <<
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"This pin tool tests probe replacement.\n"
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"\n";
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cerr << KNOB_BASE::StringKnobSummary();
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cerr << endl;
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return -1;
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}
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pid_t activeProcessId = 0;
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pid_t parentPid = 0;
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void BeforeFork(UINT32 childPid, void *data)
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{
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parentPid = PIN_GetPid();
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Out << "TOOL: Before fork.." << endl;
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}
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void AfterForkInParent(UINT32 childPid, void *data)
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{
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activeProcessId = PIN_GetPid();
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Out << "TOOL: After fork in parent." << endl;
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}
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void AfterForkInChild(UINT32 childPid, void *data)
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{
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activeProcessId = PIN_GetPid();
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Out << "TOOL: After fork in child." << endl;
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ASSERTX(NULL != free_memory_ptr);
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free_memory_ptr();
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}
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BOOL FollowChild(CHILD_PROCESS childProcess, VOID * userData)
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{
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if (PIN_GetPid() == parentPid)
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{
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Out << "TOOL: At follow child callback in parent process." << endl;
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}
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else
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{
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Out << "TOOL: At follow child callback in child process." << endl;
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}
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// Pin replaces vfork with fork. In this case the global variable
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// activeProcessId will receive the right value
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if (activeProcessId != PIN_GetPid())
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{
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fprintf(stderr, "vfork works incorrectly with -follow_execv\n");
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exit(-1);
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}
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return TRUE;
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}
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VOID Image(IMG img, VOID* arg)
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{
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if (IMG_IsMainExecutable(img))
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{
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RTN free_memory_rtn = RTN_FindByName(img, "free_memory");
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ASSERTX(RTN_Valid(free_memory_rtn));
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free_memory_ptr = (void(*)(void))RTN_Address(free_memory_rtn);
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}
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}
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int main(int argc, CHAR *argv[])
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{
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PIN_InitSymbols();
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if( PIN_Init(argc,argv) )
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{
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return Usage();
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}
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string outFileName = KnobOutputFile.Value() + string("_") + decstr(PIN_GetPid());
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Out.open(outFileName.c_str(), ios_base::app);
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if (!Out.is_open())
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{
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cerr << "Can't open file " << outFileName << endl;
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exit(-1);
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}
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cerr << "Open file " << outFileName << endl;
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IMG_AddInstrumentFunction(Image, NULL);
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PIN_AddForkFunctionProbed(FPOINT_BEFORE, BeforeFork, 0);
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PIN_AddForkFunctionProbed(FPOINT_AFTER_IN_CHILD, AfterForkInChild, 0);
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PIN_AddForkFunctionProbed(FPOINT_AFTER_IN_PARENT, AfterForkInParent, 0);
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PIN_AddFollowChildProcessFunction(FollowChild, 0);
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PIN_StartProgramProbed();
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return 0;
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}
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