genode/repos/ports/include/noux_session/client.h
Norman Feske 17c79a9e23 base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.

While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).

To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.

Issue #1987
2016-08-29 17:27:10 +02:00

60 lines
1.2 KiB
C++

/*
* \brief Noux-session client interface
* \author Norman Feske
* \date 2011-02-15
*/
/*
* Copyright (C) 2011-2013 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 _INCLUDE__NOUX_SESSION__CLIENT_H_
#define _INCLUDE__NOUX_SESSION__CLIENT_H_
#include <noux_session/noux_session.h>
#include <noux_session/capability.h>
#include <base/rpc_client.h>
#include <base/log.h>
namespace Noux {
struct Session_client : Rpc_client<Session>
{
explicit Session_client(Session_capability session)
: Rpc_client<Session>(session) { }
Dataspace_capability sysio_dataspace()
{
return call<Rpc_sysio_dataspace>();
}
bool syscall(Syscall sc)
{
static bool verbose = false;
bool result = call<Rpc_syscall>(sc);
if ((result == false) && verbose)
error("syscall ", syscall_name(sc), " failed");
return result;
}
int next_open_fd(int start_fd)
{
return call<Rpc_next_open_fd>(start_fd);
}
Capability<Region_map> lookup_region_map(addr_t const addr)
{
return call<Rpc_lookup_region_map>(addr);
}
};
}
#endif /* _INCLUDE__NOUX_SESSION__CLIENT_H_ */