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- /* Copyright (C) 2014 Stony Brook University
- This file is part of Graphene Library OS.
- Graphene Library OS is free software: you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License
- as published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
- Graphene Library OS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- /*
- * db_process.c
- *
- * This source file contains functions to create a child process and terminate
- * the running process. Child does not inherit any objects or memory from its
- * parent pricess. A Parent process may not modify the execution of its
- * children. It can wait for a child to exit using its handle. Also, parent and
- * child may communicate through I/O streams provided by the parent to the child
- * at creation.
- */
- #include "api.h"
- #include "pal.h"
- #include "pal_debug.h"
- #include "pal_defs.h"
- #include "pal_error.h"
- #include "pal_internal.h"
- PAL_HANDLE
- DkProcessCreate(PAL_STR uri, PAL_STR* args) {
- ENTER_PAL_CALL(DkProcessCreate);
- /* DEP 3/22/17: There seems to be a default semantics that
- * a NULL URI should replicate the parent. I think we may want
- * this to become an error in the future, but keep the behavior
- * for now, and make it consistent across hosts. */
- if (!uri)
- uri = pal_control.executable;
- log_stream(uri);
- PAL_HANDLE handle = NULL;
- int ret = _DkProcessCreate(&handle, uri, args);
- if (ret < 0) {
- _DkRaiseFailure(-ret);
- handle = NULL;
- }
- LEAVE_PAL_CALL_RETURN(handle);
- }
- noreturn void DkProcessExit(PAL_NUM exitcode) {
- ENTER_PAL_CALL(DkProcessExit);
- _DkProcessExit(exitcode);
- _DkRaiseFailure(PAL_ERROR_NOTKILLABLE);
- while (true)
- /* nothing */;
- LEAVE_PAL_CALL();
- }
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