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samba-mirror/source3/include/g_lock.h
Volker Lendecke 90d7784d45 g_lock: Make g_lock_dump return a complete list of locks
To be honest, it did not really make sense to just pass in
lock holders individually. You could argue that it made sense
with in reality only G_LOCK_WRITE around, but soon we will have
G_LOCK_READ and thus multiple lock holders on a single lock.

Now that we also have userdata, change the g_lock_dump API

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-06-15 13:19:14 +02:00

70 lines
2.1 KiB
C

/*
Unix SMB/CIFS implementation.
global locks based on dbwrap and messaging
Copyright (C) 2009 by Volker Lendecke
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 _G_LOCK_H_
#define _G_LOCK_H_
#include "dbwrap/dbwrap.h"
struct g_lock_ctx;
struct messaging_context;
enum g_lock_type {
G_LOCK_READ = 0,
G_LOCK_WRITE = 1,
};
struct g_lock_rec {
enum g_lock_type lock_type;
struct server_id pid;
};
struct g_lock_ctx *g_lock_ctx_init(TALLOC_CTX *mem_ctx,
struct messaging_context *msg);
struct tevent_req *g_lock_lock_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct g_lock_ctx *ctx,
const char *name,
enum g_lock_type type);
NTSTATUS g_lock_lock_recv(struct tevent_req *req);
NTSTATUS g_lock_lock(struct g_lock_ctx *ctx, const char *name,
enum g_lock_type lock_type, struct timeval timeout);
NTSTATUS g_lock_unlock(struct g_lock_ctx *ctx, const char *name);
NTSTATUS g_lock_write_data(struct g_lock_ctx *ctx, const char *name,
const uint8_t *buf, size_t buflen);
NTSTATUS g_lock_do(const char *name, enum g_lock_type lock_type,
struct timeval timeout,
void (*fn)(void *private_data), void *private_data);
int g_lock_locks(struct g_lock_ctx *ctx,
int (*fn)(const char *name, void *private_data),
void *private_data);
NTSTATUS g_lock_dump(struct g_lock_ctx *ctx, const char *name,
void (*fn)(const struct g_lock_rec *locks,
size_t num_locks,
const uint8_t *data,
size_t datalen,
void *private_data),
void *private_data);
#endif