base: extend cap_session with memory allocator

Required to allocate memory to remember per session created capabilities.
During session destruction all capabilities have to be freed up.

base-foc/src/core/include/cap_session_component.h

@@ -16,6 +16,7 @@
 
 /* Genode includes */
 #include <base/rpc_server.h>
+#include <base/allocator.h>
 
 namespace Genode {
 
@@ -27,6 +28,8 @@ namespace Genode {
 
 		public:
 
+			Cap_session_component(Allocator *md_alloc, const char *args) {}
+
 			Native_capability alloc(Native_capability ep);
 
 			void free(Native_capability cap);

base-linux/src/core/include/cap_session_component.h

@@ -33,6 +33,8 @@ namespace Genode {
 
 		public:
 
+			Cap_session_component(Allocator *md_alloc, const char *args) {}
+
 			Native_capability alloc(Native_capability ep)
 			{
 				Lock::Guard lock_guard(_lock());

base-linux/src/core/include/core_env.h

@@ -160,6 +160,7 @@ namespace Genode {
 				Platform_env_base(Ram_session_capability(),
 				                  Cpu_session_capability(),
 				                  Pd_session_capability()),
+				_cap_session(platform()->core_mem_alloc(), "ram_quota=4K"),
 				_entrypoint(&_cap_session),
 				_ram_session(&_entrypoint, &_entrypoint,
 				             platform()->ram_alloc(), platform()->core_mem_alloc(),

base-nova/src/core/include/cap_session_component.h

@@ -37,6 +37,16 @@ namespace Genode {
 
 		public:
 
+			/**
+			 * Constructor
+			 */
+			Cap_session_component(Allocator *md_alloc, const char *args) { }
+
+			/**
+			 * Destructor
+			 */
+			~Cap_session_component() { }
+
 			Native_capability alloc(Native_capability ep,
 			                        addr_t entry,
 			                        addr_t mtd)

base/src/core/include/cap_root.h

@@ -24,10 +24,13 @@ namespace Genode {
 
 	class Cap_root : public Root_component<Cap_session_component>
 	{
+		private:
+			Allocator         *_md_alloc;
+
 		protected:
 
 			Cap_session_component *_create_session(const char *args) {
-				return new (md_alloc()) Cap_session_component(); }
+				return new (md_alloc()) Cap_session_component(_md_alloc, args); }
 
 		public:
 
@@ -40,7 +43,9 @@ namespace Genode {
 			Cap_root(Rpc_entrypoint *session_ep,
 			         Allocator      *md_alloc)
 			:
-				Root_component<Cap_session_component>(session_ep, md_alloc) { }
+				Root_component<Cap_session_component>(session_ep, md_alloc),
+				_md_alloc(md_alloc)
+			{ }
 	};
 }
 

base/src/core/include/cap_session_component.h

@@ -33,6 +33,8 @@ namespace Genode {
 
 		public:
 
+			Cap_session_component(Allocator *md_alloc, const char *args) {}
+
 			Native_capability alloc(Native_capability ep)
 			{
 				Lock::Guard lock_guard(_lock());

base/src/core/include/core_env.h

@@ -129,6 +129,7 @@ namespace Genode {
 			 * Constructor
 			 */
 			Core_env() :
+				_cap_session(platform()->core_mem_alloc(), "ram_quota=4K"),
 				_entrypoint(&_cap_session, ENTRYPOINT_STACK_SIZE, "entrypoint"),
 				_rm_session(&_entrypoint),
 				_ram_session(&_entrypoint, &_entrypoint,