DMTCP_EVENT_PRESUSPEND is a callback from DMTCP. ckpt thread executes here.

This hook is called after a successful completion of freopen or freopen64. Since the new path might be different from the old path, and the new connec

rc < 0 => error; rc == sizeof(hdr) => no data to read; rc > 0 => saved w/ count hdr

! \fn jalib::JChunkReader::readAvailable() */

returns 0 if not ready to read; else returns -1, or size read incl. header

* * Read memory area descriptors from checkpoint file * Read memory area contents and/or mmap original file * Four cases: * * MAP_ANONYMOUS

Also record the count read on each iteration, in case it's packet mode

If your code wants to avoid the wrapper above, call this version */

* Class Function: remove_descriptor * * Description: Removes descriptors * * Parameters: type - descriptor type * de

! \fn jalib::JChunkReader::reset() */

* *****************************************************************************/

This is a copy of the code in dmtcpworker.cpp:restoreUserLDPRELOAD() Please keep this function in sync. Note that the DMTCP exec wrappers will set ENV

NOTE: Please keep this function in sync with its copy at: * dmtcp_nocheckpoint.cpp:restoreUserLDPRELOAD() */

FIXME: Handle Virtual Pids