From: Kern Sibbald <kern@sibbald.com>
Date: Tue, 19 Feb 2013 14:40:28 +0000 (+0100)
Subject: Add missing vol_mgr.h file
X-Git-Tag: Release-7.0.0~16
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=da6d1c56ee16c0ebcfce485ef3e96dc45e16fdb5;p=bacula%2Fbacula

Add missing vol_mgr.h file
---

diff --git a/bacula/src/stored/vol_mgr.h b/bacula/src/stored/vol_mgr.h
new file mode 100644
index 0000000000..44659ede4f
--- /dev/null
+++ b/bacula/src/stored/vol_mgr.h
@@ -0,0 +1,100 @@
+/*
+   Bacula® - The Network Backup Solution
+
+   Copyright (C) 2000-2013 Free Software Foundation Europe e.V.
+
+   The main author of Bacula is Kern Sibbald, with contributions from
+   many others, a complete list can be found in the file AUTHORS.
+   This program is Free Software; you can redistribute it and/or
+   modify it under the terms of version three of the GNU Affero General Public
+   License as published by the Free Software Foundation and included
+   in the file LICENSE.
+
+   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 Affero General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.
+
+   Bacula® is a registered trademark of Kern Sibbald.
+   The licensor of Bacula is the Free Software Foundation Europe
+   (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+   Switzerland, email:ftf@fsfeurope.org.
+*/
+/*
+ * Pulled out of dev.h
+ *
+ * Kern Sibbald, MMXIII
+ *
+ */
+
+/*
+ * Some details of how volume reservations work
+ *
+ * class VOLRES:
+ *   set_in_use()     volume being used on current drive
+ *   clear_in_use()   no longer being used.  Can be re-used or moved.
+ *   set_swapping()   set volume being moved to another drive
+ *   is_swapping()    volume is being moved to another drive
+ *   clear_swapping() volume normal
+ *
+ */
+
+#ifndef __VOL_MGR_H
+#define __VOL_MGR_H 1
+
+class VOLRES;
+VOLRES *vol_walk_start();
+VOLRES *vol_walk_next(VOLRES *prev_vol);
+void vol_walk_end(VOLRES *vol);
+
+/*
+ * Volume reservation class -- see vol_mgr.c and reserve.c
+ */
+class VOLRES { 
+   bool m_swapping;                   /* set when swapping to another drive */
+   bool m_in_use;                     /* set when volume reserved or in use */
+   bool m_reading;                    /* set when reading */
+   int32_t m_slot;                    /* slot of swapping volume */
+   uint32_t m_JobId;                  /* JobId for read volumes */
+   volatile int32_t m_use_count;      /* Use count */
+   pthread_mutex_t m_mutex;           /* Vol muntex */
+public:
+   dlink link;
+   char *vol_name;                    /* Volume name */
+   DEVICE *dev;                       /* Pointer to device to which we are attached */
+
+   void init_mutex() { pthread_mutex_init(&m_mutex, NULL); };
+   void destroy_mutex() { pthread_mutex_destroy(&m_mutex); };
+   void Lock() { P(m_mutex); };
+   void Unlock() { V(m_mutex); };
+   void inc_use_count(void) {P(m_mutex); m_use_count++; V(m_mutex); };
+   void dec_use_count(void) {P(m_mutex); m_use_count--; V(m_mutex); };
+   int32_t use_count() const { return m_use_count; };
+   bool is_swapping() const { return m_swapping; };
+   bool is_reading() const { return m_reading; };
+   bool is_writing() const { return !m_reading; };
+   void set_reading() { m_reading = true; };
+   void clear_reading() { m_reading = false; };
+   void set_swapping() { m_swapping = true; };
+   void clear_swapping() { m_swapping = false; };
+   bool is_in_use() const { return m_in_use; };
+   void set_in_use() { m_in_use = true; };
+   void clear_in_use() { m_in_use = false; };
+   void set_slot(int32_t slot) { m_slot = slot; };
+   void clear_slot() { m_slot = -1; };
+   int32_t get_slot() const { return m_slot; };
+   uint32_t get_jobid() const { return m_JobId; };
+   void set_jobid(uint32_t JobId) { m_JobId = JobId; };
+};
+
+#define foreach_vol(vol) \
+   for (vol=vol_walk_start(); vol; (vol=vol_walk_next(vol)) )
+
+#define endeach_vol(vol) vol_walk_end(vol)
+
+#endif