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75 lines
2.2 KiB
75 lines
2.2 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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/*! @file
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* This application is part of the test: "fork_hang.test" which checks that no deadlock has occurred when
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* a child process tries to acquire the VM lock in a post fork callback.
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*/
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#include "pin.H"
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#include <iostream>
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#include <fstream>
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#include <sys/syscall.h>
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using std::cerr;
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using std::endl;
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/* ===================================================================== */
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/* Print Help Message */
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/* ===================================================================== */
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INT32 Usage()
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{
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cerr <<
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"This tool calls a post fork callback in a child process. It comes to check"
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"that no deadlock has occured when a child tries to acquire the VM lock in a post fork callback.\n";
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cerr << endl;
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return -1;
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}
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/* ===================================================================== */
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/* Instrumentation function */
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/* ===================================================================== */
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void fork_func(THREADID threadid, const CONTEXT * ctxt, VOID * v)
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{
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/*
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* The function: "PIN_RemoveInstrumentation()" requires from the calling thread to hold the VM lock.
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*/
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PIN_RemoveInstrumentation();
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}
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/* ===================================================================== */
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/* Main */
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/* ===================================================================== */
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int main(int argc, char *argv[])
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{
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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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PIN_AddForkFunction(FPOINT_AFTER_IN_CHILD, fork_func, 0);
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PIN_StartProgram();
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return 0;
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}
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/* ===================================================================== */
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/* eof */
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/* ===================================================================== */
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