17c79a9e23
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
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
/*
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* \brief Vm root interface
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* \author Stefan Kalkowski
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* \date 2012-10-08
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*/
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/*
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* Copyright (C) 2012-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _CORE__INCLUDE__VM_ROOT_H_
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#define _CORE__INCLUDE__VM_ROOT_H_
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/* Genode includes */
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#include <root/component.h>
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#include <base/heap.h>
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/* core includes */
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#include <vm_session_component.h>
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namespace Genode {
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class Vm_root : public Root_component<Vm_session_component>
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{
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protected:
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Vm_session_component *_create_session(const char *args)
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{
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size_t ram_quota = Arg_string::find_arg(args, "ram_quota").ulong_value(0);
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return new (md_alloc()) Vm_session_component(ep(), ram_quota);
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}
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public:
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/**
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* Constructor
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*
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* \param session_ep entrypoint managing vm_session components
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* \param md_alloc meta-data allocator to be used by root component
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*/
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Vm_root(Rpc_entrypoint *session_ep,
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Allocator *md_alloc)
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: Root_component<Vm_session_component>(session_ep, md_alloc) { }
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};
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}
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#endif /* _CORE__INCLUDE__VM_ROOT_H_ */
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