2013-08-20 19:24:52 +00:00
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/*
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* \brief Utilities for implementing VMMs on Genode/NOVA
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* \author Norman Feske
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* \date 2013-08-20
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*/
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/*
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2017-02-20 12:23:52 +00:00
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* Copyright (C) 2013-2017 Genode Labs GmbH
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2013-08-20 19:24:52 +00:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 12:23:52 +00:00
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* under the terms of the GNU Affero General Public License version 3.
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2013-08-20 19:24:52 +00:00
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*/
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#ifndef _INCLUDE__VMM__PRINTF_H_
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#define _INCLUDE__VMM__PRINTF_H_
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/* Genode includes */
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#include <base/thread.h>
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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
2016-07-13 17:07:09 +00:00
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#include <base/log.h>
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2013-08-20 19:24:52 +00:00
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2016-03-08 15:59:43 +00:00
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/* NOVA includes */
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#include <nova/syscalls.h>
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2013-08-20 19:24:52 +00:00
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namespace Vmm {
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using namespace Genode;
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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
2016-07-13 17:07:09 +00:00
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/**
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* Print message while preserving the UTCB content
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*/
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template <typename... ARGS>
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void log(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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2013-08-20 19:24:52 +00:00
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2020-07-06 09:05:38 +00:00
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static Mutex mutex;
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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
2016-07-13 17:07:09 +00:00
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static Utcb_backup utcb_backup;
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2013-08-20 19:24:52 +00:00
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2020-07-06 09:05:38 +00:00
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Mutex::Guard guard(mutex);
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2013-08-20 19:24:52 +00:00
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|
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
2016-07-13 17:07:09 +00:00
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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2013-08-20 19:24:52 +00:00
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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
2016-07-13 17:07:09 +00:00
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Genode::log("VMM: ", args...);
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2013-08-20 19:24:52 +00:00
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|
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
2016-07-13 17:07:09 +00:00
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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2017-03-28 19:28:02 +00:00
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template <typename... ARGS>
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void warning(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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2020-07-06 09:05:38 +00:00
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static Mutex mutex;
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2017-03-28 19:28:02 +00:00
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static Utcb_backup utcb_backup;
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2020-07-06 09:05:38 +00:00
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Mutex::Guard guard(mutex);
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2017-03-28 19:28:02 +00:00
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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Genode::warning("VMM: ", args...);
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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template <typename... ARGS>
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void error(ARGS... args)
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{
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struct Utcb_backup { char buf[Nova::Utcb::size()]; };
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2020-07-06 09:05:38 +00:00
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static Mutex mutex;
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2017-03-28 19:28:02 +00:00
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static Utcb_backup utcb_backup;
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2020-07-06 09:05:38 +00:00
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Mutex::Guard guard(mutex);
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2017-03-28 19:28:02 +00:00
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utcb_backup = *(Utcb_backup *)Thread::myself()->utcb();
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Genode::error("VMM: ", args...);
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*(Utcb_backup *)Thread::myself()->utcb() = utcb_backup;
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}
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2013-08-20 19:24:52 +00:00
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}
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#endif /* _INCLUDE__VMM__PRINTF_H_ */
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