chl.h

Path MPICH-V for MPICH the MPI Implementation

#ifndef chl_h_
#define chl_h_

/**
 *  Create pipe used for transmission of the checkpoint file between native app
 *  and the worker.
 *  @param wid: the group id
 *  @param rankid: the rank
 *  @return 0 if no error.
 */
int initCheckpointLib(int wid, int rankid);

/*  Removes created pipes
 *  @param wid: the group id
 *  @param rankid: the rank
 *  @return 0 if no error.
 */
int closeCheckpointLib(int wid, int rankid);

/**
 * open the pipe for reading checkpoint image
 * @param wid : the group number of the application. 
 * @param rankid : the rank of the MPI process. 
 * @return fd of the pipe, -1 on failure.
 */
int openCheckpointPipeRD(int wid, int rankid);

/**
 * Fork and executes the exeargv array according the restart/invoke flag, 
 * for this rang and this job id
 * The localMPI argument is already pushed on the stack.
 * @param argv: the array of arguments ([0] is the path)
 * @param argc: the number of used arguments
 * @param args: the size of the argv array
 * @param wid: the group number of the application
 * @param rankid: the rank of the MPI process
 * @param invoke: not zero iff this is not a restart
 * @return the pid of the new process or -1 if error.
 */
int ckptForkExec(char **argv, int argc, int args, int wid, int rankid, int invoke);

#endif