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Merge Native_capability implementations (fix #145).

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This patch unifies the Native_capability classes for the different kernel
platforms by introducing an appropriate template, and eliminating naming
differences. Please refer issue #145.
This commit is contained in:
Stefan Kalkowski
2012-03-08 12:45:18 +01:00
committed by Norman Feske
parent 9992efed03
commit c9c21ad39c
37 changed files with 248 additions and 546 deletions
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65
base-linux/include/base/native_types.h
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@ -14,7 +14,7 @@
#ifndef _INCLUDE__BASE__NATIVE_TYPES_H_
#define _INCLUDE__BASE__NATIVE_TYPES_H_
#include <util/string.h>
#include <base/native_capability.h>
/*
* We cannot just include <semaphore.h> and <pthread.h> here
@ -93,68 +93,17 @@ namespace Genode {
inline bool operator != (Native_thread_id t1, Native_thread_id t2) {
return (t1.tid != t2.tid) || (t1.pid != t2.pid); }
struct Thread_id_check {
static bool valid(long id) { return id != 0; }
static long invalid() { return 0; }
};
/**
* Empty UTCB type expected by the thread library, unused on Linux
*/
typedef struct { } Native_utcb;
/*
* On Linux, the local_name member of a capability is global
* to the whole system. Therefore, capabilities are to be
* created at a central place that prevents id clashes.
*/
class Native_capability
{
protected:
long _tid; /* target thread */
long _local_name;
protected:
Native_capability(void* ptr) : _local_name((long)ptr) { }
public:
/**
* Default constructor
*/
Native_capability() : _tid(0), _local_name(0) { }
long local_name() const { return _local_name; }
void* local() const { return (void*)_local_name; }
bool valid() const { return _tid != 0; }
/****************************************************
** Functions to be used by the Linux backend only **
****************************************************/
/**
* Constructor
*
* This constructor can be called to create a Linux
* capability by hand. It must never be used from
* generic code!
*/
Native_capability(long tid, long local_name)
: _tid(tid), _local_name(local_name) { }
/**
* Access raw capability data
*/
long dst() const { return _tid; }
long tid() const { return _tid; }
/**
* Copy this capability to another pd.
*/
void copy_to(void* dst) {
memcpy(dst, this, sizeof(Native_capability)); }
};
typedef Native_capability_tpl<long, Thread_id_check> Native_capability;
typedef int Native_connection_state; /* socket descriptor */
}