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/* ===================================================================== */
/*
 * @ORIGINAL_AUTHOR: Yael Weiss
 */

/* ===================================================================== */
/*! @file
 * This application is part of the test: "fork_vm_lock.test" which checks that no deadlock has occured when  
 * a child process tries to acquire the VM lock in a post fork callback.
 */
 
#include "pin.H"
#include <iostream>
#include <fstream>
#include <sys/syscall.h>


/* ===================================================================== */
/* Print Help Message                                                    */
/* ===================================================================== */
 
INT32 Usage()
{
    cerr <<
        "This tool calls a post fork callback in a child process. It comes to check" 
        "that no deadlock has occured when a child tries to acquire the VM lock in a post fork callback.\n";
    
    cerr << endl;

    return -1;
}


/* ===================================================================== */
/* Instrumentation function                                              */
/* ===================================================================== */

void fork_func(THREADID threadid, const CONTEXT * ctxt, VOID * v)
{
    /*
     * The function: "CODECACHE_FlushCache()" requires from the calling thread to hold the VM lock.
     */
    CODECACHE_FlushCache(); 
}


/* ===================================================================== */
/* Main                                                                  */
/* ===================================================================== */

int main(int argc, char *argv[])
{
    if( PIN_Init(argc,argv) )
    {
        return Usage();
    }
  
    PIN_AddForkFunction(FPOINT_AFTER_IN_CHILD, fork_func, 0);
  
    PIN_StartProgram();
  
    return 0;
}

/* ===================================================================== */
/* eof */
/* ===================================================================== */
