core: introduce 'Core' namespace

The namespace draws a clear line between the base library and the core
component.

It is declared at the new core-local header <types.h>, which is expected
to be included by all code of the core component. It is thereby a
natural place for kernel-agnostic general types like commonly used C++
utilities.

Fixes #4777

repos/base-linux/src/core/core_log_out.cc

@@ -17,4 +17,4 @@
 /* Linux syscall bindings */
 #include <linux_syscalls.h>
 
-void Genode::Core_log::out(char const c) { lx_write(1, &c, sizeof(c)); }
+void Core::Core_log::out(char const c) { lx_write(1, &c, sizeof(c)); }

repos/base-linux/src/core/core_rpc_cap_alloc.cc

@@ -17,7 +17,10 @@
 /* base-internal includes */
 #include <base/internal/native_thread.h>
 
-using namespace Genode;
+/* core includes */
+#include <types.h>
+
+using namespace Core;
 
 
 Native_capability Rpc_entrypoint::_alloc_rpc_cap(Pd_session &, Native_capability,

repos/base-linux/src/core/include/core_region_map.h

@@ -17,10 +17,13 @@
 /* base-internal includes */
 #include <base/internal/region_map_mmap.h>
 
-namespace Genode { class Core_region_map; }
+/* core includes */
+#include <types.h>
+
+namespace Core { class Core_region_map; }
 
 
-struct Genode::Core_region_map : Region_map_mmap
+struct Core::Core_region_map : Region_map_mmap
 {
 	Core_region_map(Rpc_entrypoint &) : Region_map_mmap(false) { }
 };

repos/base-linux/src/core/include/dataspace_component.h

@@ -19,15 +19,19 @@
 #ifndef _CORE__INCLUDE__DATASPACE_COMPONENT_H_
 #define _CORE__INCLUDE__DATASPACE_COMPONENT_H_
 
+/* Genode includes */
 #include <linux_dataspace/linux_dataspace.h>
-#include <util/string.h>
 #include <util/misc_math.h>
 #include <base/rpc_server.h>
 
 /* base-internal includes */
 #include <base/internal/capability_space_tpl.h>
 
-namespace Genode {
+/* core includes */
+#include <types.h>
+
+namespace Core {
+
 	class Dataspace_owner;
 	class Dataspace_component;
 }
@@ -36,10 +40,10 @@ namespace Genode {
 /**
  * Deriving classes can own a dataspace to implement conditional behavior
  */
-class Genode::Dataspace_owner : Interface { };
+class Core::Dataspace_owner : Interface { };
 
 
-class Genode::Dataspace_component : public Rpc_object<Linux_dataspace>
+class Core::Dataspace_component : public Rpc_object<Linux_dataspace>
 {
 	private:
 

repos/base-linux/src/core/include/io_mem_session_component.h

@@ -22,10 +22,10 @@
 /* core includes */
 #include <dataspace_component.h>
 
-namespace Genode { class Io_mem_session_component; }
+namespace Core { class Io_mem_session_component; }
 
 
-class Genode::Io_mem_session_component : public Rpc_object<Io_mem_session>
+class Core::Io_mem_session_component : public Rpc_object<Io_mem_session>
 {
 	private:
 

repos/base-linux/src/core/include/irq_object.h

@@ -14,12 +14,16 @@
 #ifndef _IRQ_OBJECT_H_
 #define _IRQ_OBJECT_H_
 
+/* Genode includes */
 #include <base/thread.h>
 
-namespace Genode { class Irq_object; };
+/* core includes */
+#include <types.h>
+
+namespace Core { class Irq_object; };
 
 
-class Genode::Irq_object : public Thread
+class Core::Irq_object : public Thread
 {
 	private:
 

repos/base-linux/src/core/include/irq_session_component.h

@@ -14,17 +14,20 @@
 #ifndef _CORE__INCLUDE__IRQ_SESSION_COMPONENT_H_
 #define _CORE__INCLUDE__IRQ_SESSION_COMPONENT_H_
 
+/* Genode includes */
 #include <util/list.h>
 #include <base/rpc_server.h>
 #include <base/allocator.h>
 #include <irq_session/irq_session.h>
+
+/* core includes */
 #include <irq_object.h>
 
-namespace Genode { class Irq_session_component; }
+namespace Core { class Irq_session_component; }
 
 
-class Genode::Irq_session_component : public Rpc_object<Irq_session>,
-                                      private List<Irq_session_component>::Element
+class Core::Irq_session_component : public Rpc_object<Irq_session>,
+                                    private List<Irq_session_component>::Element
 {
 	private:
 

repos/base-linux/src/core/include/native_cpu_component.h

@@ -19,14 +19,18 @@
 /* Genode includes */
 #include <linux_native_cpu/linux_native_cpu.h>
 
-namespace Genode {
+/* core includes */
+#include <types.h>
+
+namespace Core {
+
 	class Cpu_session_component;
 	class Native_cpu_component;
 }
 
 
-class Genode::Native_cpu_component : public Rpc_object<Cpu_session::Native_cpu,
-                                                       Native_cpu_component>
+class Core::Native_cpu_component : public Rpc_object<Cpu_session::Native_cpu,
+                                                     Native_cpu_component>
 {
 	private:
 

repos/base-linux/src/core/include/native_pd_component.h

@@ -17,15 +17,19 @@
 /* Genode includes */
 #include <linux_native_pd/linux_native_pd.h>
 
-namespace Genode {
+/* core includes */
+#include <types.h>
+
+namespace Core {
+
 	class Dataspace_component;
 	class Pd_session_component;
 	class Native_pd_component;
 }
 
 
-class Genode::Native_pd_component : public Rpc_object<Pd_session::Native_pd,
-                                                      Native_pd_component>
+class Core::Native_pd_component : public Rpc_object<Pd_session::Native_pd,
+                                                    Native_pd_component>
 {
 	private:
 

repos/base-linux/src/core/include/pager.h

@@ -20,16 +20,19 @@
 #include <cpu_session/cpu_session.h>  /* for 'Thread_capability' type */
 #include <pager/capability.h>
 
-/* core-local includes */
+/* core includes */
 #include <rpc_cap_factory.h>
 
-namespace Genode {
+namespace Core {
+
 	struct Pager_object;
 	struct Pager_entrypoint;
+
+	using Pager_capability = Capability<Pager_object>;
 }
 
 
-struct Genode::Pager_object
+struct Core::Pager_object
 {
 	Thread_capability         _thread_cap { };
 	Signal_context_capability _sigh       { };
@@ -47,7 +50,7 @@ struct Genode::Pager_object
 };
 
 
-struct Genode::Pager_entrypoint
+struct Core::Pager_entrypoint
 {
 	Pager_entrypoint(Rpc_cap_factory &) { }
 

repos/base-linux/src/core/include/platform.h

@@ -19,7 +19,7 @@
 #include <base/allocator_avl.h>
 #include <util/arg_string.h>
 
-/* core-local includes */
+/* core includes */
 #include <platform_generic.h>
 #include <platform_pd.h>
 #include <platform_thread.h>
@@ -51,7 +51,7 @@ static unsigned long ram_quota_from_env()
 }
 
 
-class Genode::Platform : public Platform_generic
+class Core::Platform : public Platform_generic
 {
 	private:
 

repos/base-linux/src/core/include/platform_pd.h

@@ -14,16 +14,21 @@
 #ifndef _CORE__INCLUDE__PLATFORM_PD_H_
 #define _CORE__INCLUDE__PLATFORM_PD_H_
 
+/* Genode includes */
 #include <base/allocator.h>
 #include <parent/parent.h>
 
-namespace Genode {
+/* core includes */
+#include <types.h>
+
+namespace Core {
+
 	struct Platform_pd;
 	struct Platform_thread;
 }
 
 
-struct Genode::Platform_pd
+struct Core::Platform_pd
 {
 	Platform_pd(Allocator &, char const *) { }
 

repos/base-linux/src/core/include/platform_thread.h

@@ -23,7 +23,7 @@
 /* core includes */
 #include <pager.h>
 
-namespace Genode { class Platform_thread; }
+namespace Core { class Platform_thread; }
 
 
 /*
@@ -34,7 +34,7 @@ namespace Genode { class Platform_thread; }
  * turn, we find the exception handler's 'Signal_context_capability'.
  */
 
-class Genode::Platform_thread : public List<Platform_thread>::Element
+class Core::Platform_thread : public List<Platform_thread>::Element
 {
 	private:
 

repos/base-linux/src/core/include/region_map_component.h

@@ -25,15 +25,16 @@
 #include <pager.h>
 #include <platform_thread.h>
 
-namespace Genode {
+namespace Core {
+
 	struct Rm_client;
 	struct Rm_member;
 	class Region_map_component;
 }
 
 
-class Genode::Region_map_component : public Rpc_object<Region_map>,
-                                     private List<Region_map_component>::Element
+class Core::Region_map_component : public Rpc_object<Region_map>,
+                                   private List<Region_map_component>::Element
 {
 	private:
 
@@ -74,7 +75,7 @@ class Genode::Region_map_component : public Rpc_object<Region_map>,
 };
 
 
-struct Genode::Rm_client : Pager_object
+struct Core::Rm_client : Pager_object
 {
 	Rm_client(Cpu_session_capability, Thread_capability,
 	          Region_map_component &, unsigned long,

repos/base-linux/src/core/include/rpc_cap_factory.h

@@ -14,12 +14,17 @@
 #ifndef _CORE__INCLUDE__RPC_CAP_FACTORY_H_
 #define _CORE__INCLUDE__RPC_CAP_FACTORY_H_
 
+/* Genode includes */
 #include <base/allocator.h>
 #include <base/capability.h>
 
-namespace Genode { class Rpc_cap_factory; }
+/* core includes */
+#include <types.h>
 
-class Genode::Rpc_cap_factory
+namespace Core { class Rpc_cap_factory; }
+
+
+class Core::Rpc_cap_factory
 {
 	private:
 

repos/base-linux/src/core/include/util.h

@@ -17,4 +17,7 @@
 /* base-internal includes */
 #include <base/internal/page_size.h>
 
+/* core includes */
+#include <types.h>
+
 #endif /* _CORE__INCLUDE__UTIL_H_ */

repos/base-linux/src/core/native_cpu_component.cc

@@ -11,14 +11,14 @@
  * under the terms of the GNU Affero General Public License version 3.
  */
 
-/* core-local includes */
+/* core includes */
 #include <cpu_session_component.h>
 #include <native_cpu_component.h>
 
 /* base-internal includes */
 #include <base/internal/capability_space_tpl.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 void Native_cpu_component::thread_id(Thread_capability thread_cap, int pid, int tid)

repos/base-linux/src/core/native_pd_component.cc

@@ -13,11 +13,10 @@
 
 /* Genode includes */
 #include <util/arg_string.h>
-#include <base/log.h>
 #include <base/snprintf.h>
 #include <cpu/consts.h>
 
-/* core-local includes */
+/* core includes */
 #include <pd_session_component.h>
 #include <dataspace_component.h>
 
@@ -28,7 +27,7 @@
 /* Linux includes */
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 /***************
@@ -122,7 +121,7 @@ void Native_pd_component::_start(Dataspace_component &ds)
 	 * the dataspace content into a temporary file whose path is passed to
 	 * 'execve()'.
 	 */
-	if (strcmp(filename, "") == 0) {
+	if (Genode::strcmp(filename, "") == 0) {
 
 		filename = tmp_filename;
 
@@ -174,7 +173,7 @@ void Native_pd_component::_start(Dataspace_component &ds)
 	_pid = lx_create_process((int (*)())_exec_child,
 	                         _execve_args_and_stack().initial_sp());
 
-	if (strcmp(filename, tmp_filename) == 0)
+	if (Genode::strcmp(filename, tmp_filename) == 0)
 		lx_unlink(filename);
 }
 

repos/base-linux/src/core/platform.cc

@@ -27,7 +27,7 @@
 /* Linux includes */
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 /**

repos/base-linux/src/core/platform_thread.cc

@@ -14,13 +14,12 @@
 /* Genode includes */
 #include <util/token.h>
 #include <util/misc_math.h>
-#include <base/log.h>
 
-/* local includes */
-#include "platform_thread.h"
+/* core includes */
+#include <platform_thread.h>
 #include <linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 typedef Token<Scanner_policy_identifier_with_underline> Tid_token;
@@ -77,7 +76,7 @@ Platform_thread::Registry &Platform_thread::_registry()
 Platform_thread::Platform_thread(size_t, const char *name, unsigned,
                                  Affinity::Location, addr_t)
 {
-	copy_cstring(_name, name, min(sizeof(_name), strlen(name) + 1));
+	copy_cstring(_name, name, min(sizeof(_name), Genode::strlen(name) + 1));
 
 	_registry().insert(this);
 }

repos/base-linux/src/core/ram_dataspace_support.cc

@@ -28,7 +28,7 @@
 #include <core_linux_syscalls.h>
 
 
-using namespace Genode;
+using namespace Core;
 
 
 static int ram_ds_cnt = 0;  /* counter for creating unique dataspace IDs */

repos/base-linux/src/core/rom_session_component.cc

@@ -30,7 +30,7 @@
 /* local includes */
 #include "rom_session_component.h"
 
-using namespace Genode;
+using namespace Core;
 
 
 /**

repos/base-linux/src/core/rpc_cap_factory_linux.cc

@@ -14,7 +14,7 @@
 /* core includes */
 #include <rpc_cap_factory.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Native_capability Rpc_cap_factory::alloc(Native_capability)

repos/base-linux/src/core/spec/linux/dataspace_component.cc

@@ -29,7 +29,7 @@
 /* local includes */
 #include "dataspace_component.h"
 
-using namespace Genode;
+using namespace Core;
 
 
 Linux_dataspace::Filename Dataspace_component::_file_name(const char *args)
@@ -54,7 +54,7 @@ Linux_dataspace::Filename Dataspace_component::_file_name(const char *args)
 
 size_t Dataspace_component::_file_size()
 {
-	uint64_t size = 0;
+	Genode::uint64_t size = 0;
 	if (lx_stat_size(_fname.buf, size) < 0)
 		throw Service_denied();
 

repos/base-linux/src/core/spec/linux/io_mem_session_component.cc

@@ -12,17 +12,16 @@
  */
 
 /* Genode includes */
-#include <base/log.h>
 #include <linux_dataspace/client.h>
 #include <io_mem_session_component.h>
 
 /* base-internal includes */
 #include <base/internal/page_size.h>
 
-/* core-local includes */
+/* core includes */
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 size_t Io_mem_session_component::get_arg_size(const char *)

repos/base-linux/src/core/spec/linux/io_port_session_component.cc

@@ -13,7 +13,7 @@
 
 #include <io_port_session_component.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Io_port_session_component::Io_port_session_component(Range_allocator &io_port_alloc,

repos/base-linux/src/core/spec/linux/irq_session_component.cc

@@ -14,14 +14,13 @@
  */
 
 /* Genode includes */
-#include <base/log.h>
 #include <base/thread.h>
 #include <irq_session_component.h>
 
-/* core-local includes */
+/* core includes */
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Irq_session_component::Irq_session_component(Range_allocator &, const char *)

repos/base-linux/src/core/spec/linux/platform_services.cc

@@ -19,8 +19,8 @@
 #include <platform_services.h>
 
 
-void Genode::platform_add_local_services(Rpc_entrypoint         &,
-                                         Sliced_heap            &,
-                                         Registry<Service>      &,
-                                         Trace::Source_registry &)
+void Core::platform_add_local_services(Rpc_entrypoint         &,
+                                       Sliced_heap            &,
+                                       Registry<Service>      &,
+                                       Trace::Source_registry &)
 { }

repos/base-linux/src/core/spec/pc/dataspace_component.cc

@@ -25,10 +25,10 @@
 #include <root/root.h>
 #include <base/session_label.h>
 
-/* local includes */
-#include "dataspace_component.h"
+/* core includes */
+#include <dataspace_component.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Linux_dataspace::Filename Dataspace_component::_file_name(const char *args)
@@ -51,9 +51,9 @@ Linux_dataspace::Filename Dataspace_component::_file_name(const char *args)
 }
 
 
-Genode::size_t Dataspace_component::_file_size()
+size_t Dataspace_component::_file_size()
 {
-	uint64_t size = 0;
+	Genode::uint64_t size = 0;
 	if (lx_stat_size(_fname.buf, size) < 0)
 		throw Service_denied();
 

repos/base-linux/src/core/spec/pc/io_mem_session_component.cc

@@ -12,15 +12,14 @@
  */
 
 /* Genode includes */
-#include <base/log.h>
 #include <linux_dataspace/client.h>
 #include <base/internal/page_size.h>
 #include <io_mem_session_component.h>
 
-/* core-local includes */
+/* core includes */
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 size_t Io_mem_session_component::get_arg_size(const char *args)

repos/base-linux/src/core/spec/pc/io_port_session_component.cc

@@ -14,7 +14,7 @@
 #include <util/arg_string.h>
 #include <io_port_session_component.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Io_port_session_component::Io_port_session_component(Range_allocator &io_port_alloc,

repos/base-linux/src/core/spec/pc/irq_session_component.cc

@@ -13,15 +13,14 @@
  */
 
 /* Genode includes */
-#include <base/log.h>
 #include <base/thread.h>
 
-/* core-local includes */
+/* core includes */
 #include <irq_session_component.h>
 #include <irq_object.h>
 #include <core_linux_syscalls.h>
 
-using namespace Genode;
+using namespace Core;
 
 
 Irq_session_component::Irq_session_component(Range_allocator &, const char *args)

repos/base-linux/src/core/spec/pc/platform_services.cc

@@ -22,10 +22,13 @@
 #include <io_port_root.h>
 #include <core_linux_syscalls.h>
 
-void Genode::platform_add_local_services(Rpc_entrypoint         &,
-                                         Sliced_heap            &md,
-                                         Registry<Service>      &reg,
-                                         Trace::Source_registry &)
+using namespace Core;
+
+
+void Core::platform_add_local_services(Rpc_entrypoint     &,
+                                       Sliced_heap        &md,
+                                       Registry<Service>  &reg,
+                                       Core::Trace::Source_registry &)
 {
 	if (!lx_iopl(3)) {
 		static Io_port_root io_port_root(*core_env().pd_session(),