genode/repos/base-foc/src/core/include/cap_id_alloc.h
Stefan Kalkowski ccb968ff7d safeguard the synchronized allocator template
* Move the Synced_interface from os -> base
* Align the naming of "synchronized" helpers to "Synced_*"
* Move Synced_range_allocator to core's private headers
* Remove the raw() and lock() members from Synced_allocator and
  Synced_range_allocator, and re-use the Synced_interface for them
* Make core's Mapped_mem_allocator a friend class of Synced_range_allocator
  to enable the needed "unsafe" access of its physical and virtual allocators

Fix #1697
2015-09-30 12:20:39 +02:00

52 lines
1006 B
C++

/*
* \brief Capability IDs allocation service
* \author Stefan Kalkowski
* \date 2012-02-22
*/
/*
* Copyright (C) 2012-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _CORE__INCLUDE__CAP_IP_ALLOC_H_
#define _CORE__INCLUDE__CAP_IP_ALLOC_H_
/* Genode includes */
#include <base/allocator_avl.h>
#include <base/exception.h>
#include <base/lock.h>
#include <synced_range_allocator.h>
namespace Genode {
class Cap_id_allocator
{
private:
enum {
CAP_ID_RANGE = ~0UL,
CAP_ID_MASK = ~3UL,
CAP_ID_NUM_MAX = CAP_ID_MASK >> 2,
CAP_ID_OFFSET = 1 << 2
};
Synced_range_allocator<Allocator_avl> _id_alloc;
Lock _lock;
public:
class Out_of_ids : Exception {};
Cap_id_allocator(Allocator*);
unsigned long alloc();
void free(unsigned long id);
};
}
#endif /* _CORE__INCLUDE__CAP_IP_ALLOC_H_ */