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samba-mirror/lib/pthreadpool/pthreadpool_tevent.h
Stefan Metzmacher f9745d8b52 pthreadpool: implement pthreadpool_tevent_wrapper_create() infrastructure
This can be used implement a generic per thread impersonation
for thread pools.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-07-24 17:38:28 +02:00

96 lines
3.0 KiB
C

/*
* Unix SMB/CIFS implementation.
* threadpool implementation based on pthreads
* Copyright (C) Volker Lendecke 2016
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __PTHREADPOOL_TEVENT_H__
#define __PTHREADPOOL_TEVENT_H__
#include <tevent.h>
void pthreadpool_tevent_cleanup_orphaned_jobs(void);
struct pthreadpool_tevent;
int pthreadpool_tevent_init(TALLOC_CTX *mem_ctx, unsigned max_threads,
struct pthreadpool_tevent **presult);
struct pthreadpool_tevent_wrapper_ops {
const char *name;
bool (*before_job)(struct pthreadpool_tevent *wrap_tp,
void *private_state,
struct pthreadpool_tevent *main_tp,
const char *location);
bool (*after_job)(struct pthreadpool_tevent *wrap_tp,
void *private_state,
struct pthreadpool_tevent *main_tp,
const char *location);
};
struct pthreadpool_tevent *_pthreadpool_tevent_wrapper_create(
struct pthreadpool_tevent *main_tp,
TALLOC_CTX *mem_ctx,
const struct pthreadpool_tevent_wrapper_ops *ops,
void *pstate,
size_t psize,
const char *type,
const char *location);
#define pthreadpool_tevent_wrapper_create(main_tp, mem_ctx, ops, state, type) \
_pthreadpool_tevent_wrapper_create(main_tp, mem_ctx, ops, \
state, sizeof(type), #type, __location__)
/*
* this can only be called directly after
* pthreadpool_tevent_wrapper_create()
*/
void pthreadpool_tevent_force_per_thread_cwd(struct pthreadpool_tevent *pool,
const void *private_state);
size_t pthreadpool_tevent_max_threads(struct pthreadpool_tevent *pool);
size_t pthreadpool_tevent_queued_jobs(struct pthreadpool_tevent *pool);
bool pthreadpool_tevent_per_thread_cwd(struct pthreadpool_tevent *pool);
/*
* return true - if tevent_req_cancel() was called.
*/
bool pthreadpool_tevent_current_job_canceled(void);
/*
* return true - if talloc_free() was called on the job request,
* tevent_context or pthreadpool_tevent.
*/
bool pthreadpool_tevent_current_job_orphaned(void);
/*
* return true if canceled and orphaned are both false.
*/
bool pthreadpool_tevent_current_job_continue(void);
/*
* return true if the current job can rely on a per thread
* current working directory.
*/
bool pthreadpool_tevent_current_job_per_thread_cwd(void);
struct tevent_req *pthreadpool_tevent_job_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct pthreadpool_tevent *pool,
void (*fn)(void *private_data), void *private_data);
int pthreadpool_tevent_job_recv(struct tevent_req *req);
#endif