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base: Unify 'Platform_env' across platforms

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This commit is contained in:
Norman Feske 2013-09-25 15:36:23 +02:00
parent 93bd4d55f8
commit ae40cb545c
6 changed files with 242 additions and 269 deletions
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2
base-linux/lib/mk/base-common.mk
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@ -24,7 +24,7 @@ SRC_CC += thread/trace.cc
INC_DIR += $(REP_DIR)/src/base/lock $(BASE_DIR)/src/base/lock
INC_DIR += $(REP_DIR)/src/base/ipc
INC_DIR += $(REP_DIR)/src/base/env
INC_DIR += $(REP_DIR)/src/base/env $(BASE_DIR)/src/base/env
INC_DIR += $(REP_DIR)/src/platform $(BASE_DIR)/src/platform
INC_DIR += $(BASE_DIR)/src/base/thread

2
base-linux/lib/mk/base.inc
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@ -12,7 +12,7 @@ LIBS += base-common syscall
SRC_CC += console/log_console.cc
SRC_CC += env/env.cc env/platform_env.cc env/context_area.cc
INC_DIR += $(REP_DIR)/src/base/env
INC_DIR += $(REP_DIR)/src/base/env $(BASE_DIR)/src/base/env
vpath %.cc $(REP_DIR)/src/base
vpath %.cc $(BASE_DIR)/src/base

102
base-linux/src/base/env/platform_env.h vendored
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@ -12,22 +12,45 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__BASE__PLATFORM_ENV_H_
#define _INCLUDE__BASE__PLATFORM_ENV_H_
#ifndef _PLATFORM_ENV_H_
#define _PLATFORM_ENV_H_
/* Linux includes */
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <base/env.h>
#include <base/printf.h>
/* Genode includes */
#include <util/misc_math.h>
#include <base/heap.h>
#include <parent/client.h>
#include <ram_session/client.h>
#include <linux_cpu_session/client.h>
#include <pd_session/client.h>
/* local includes (from 'base/src/base/env/') */
#include <platform_env_common.h>
namespace Genode {
struct Expanding_cpu_session_client;
class Platform_env;
}
struct Genode::Expanding_cpu_session_client
:
Upgradeable_client<Genode::Linux_cpu_session_client>
{
Expanding_cpu_session_client(Genode::Capability<Linux_cpu_session> cap)
: Upgradeable_client<Genode::Linux_cpu_session_client>(cap) { }
Thread_capability create_thread(Name const &name, addr_t utcb)
{
return retry<Cpu_session::Out_of_metadata>(
[&] () { return Linux_cpu_session_client::create_thread(name, utcb); },
[&] () { upgrade_ram(8*1024); });
}
};
namespace Genode {
@ -292,69 +315,6 @@ namespace Genode {
private:
class Expanding_ram_session_client : public Ram_session_client
{
Ram_session_capability _cap;
public:
Expanding_ram_session_client(Ram_session_capability cap)
: Ram_session_client(cap), _cap(cap) { }
Ram_dataspace_capability alloc(size_t size, bool cached)
{
bool try_again;
do {
try_again = false;
try {
return Ram_session_client::alloc(size, cached);
} catch (Ram_session::Out_of_metadata) {
/* give up if the error occurred a second time */
if (try_again)
break;
PINF("upgrading quota donation for Env::RAM session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return Ram_dataspace_capability();
}
};
class Expanding_cpu_session_client : public Linux_cpu_session_client
{
Cpu_session_capability _cap;
public:
Expanding_cpu_session_client(Cpu_session_capability cap)
: Linux_cpu_session_client(static_cap_cast<Linux_cpu_session>(cap)), _cap(cap) { }
Thread_capability create_thread(Name const &name, addr_t utcb = 0) {
bool try_again;
do {
try_again = false;
try {
return Linux_cpu_session_client::create_thread(name, utcb);
}
catch (Cpu_session::Out_of_metadata) {
if (try_again)
break;
PINF("upgrade quota donation for Env::CPU session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return Thread_capability();
}
};
/*******************************
** Platform-specific members **
*******************************/
@ -481,4 +441,4 @@ namespace Genode {
};
}
#endif /* _INCLUDE__BASE__PLATFORM_ENV_H_ */
#endif /* _PLATFORM_ENV_H_ */

1
base-linux/src/core/target.mk
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@ -29,6 +29,7 @@ INC_DIR += $(REP_DIR)/src/core/include \
$(REP_DIR)/src/platform \
$(REP_DIR)/src/base/ipc \
$(REP_DIR)/src/base/env \
$(BASE_DIR)/src/base/env \
$(REP_DIR)/src/base/console \
$(BASE_DIR)/src/base/thread \

319
base/src/base/env/platform_env.h vendored
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@ -17,207 +17,134 @@
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__BASE__PLATFORM_ENV_H_
#define _INCLUDE__BASE__PLATFORM_ENV_H_
#ifndef _PLATFORM_ENV_H_
#define _PLATFORM_ENV_H_
/* Genode includes */
#include <base/printf.h>
#include <base/env.h>
#include <base/heap.h>
#include <parent/client.h>
#include <ram_session/client.h>
#include <rm_session/client.h>
#include <cpu_session/client.h>
#include <pd_session/client.h>
/* local includes */
#include <platform_env_common.h>
namespace Genode {
class Platform_env : public Env
{
class Expanding_rm_session_client : public Rm_session_client
{
Rm_session_capability _cap;
public:
Expanding_rm_session_client(Rm_session_capability cap)
: Rm_session_client(cap), _cap(cap) { }
Local_addr attach(Dataspace_capability ds,
size_t size = 0, off_t offset = 0,
bool use_local_addr = false,
Local_addr local_addr = (addr_t)0,
bool executable = false) {
bool try_again = false;
do {
try {
return Rm_session_client::attach(ds, size, offset,
use_local_addr,
local_addr,
executable);
} catch (Rm_session::Out_of_metadata) {
/* give up if the error occurred a second time */
if (try_again)
break;
PINF("upgrading quota donation for Env::RM session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return (addr_t)0;
}
Pager_capability add_client(Thread_capability thread)
{
bool try_again = false;
do {
try {
return Rm_session_client::add_client(thread);
} catch (Rm_session::Out_of_metadata) {
/* give up if the error occurred a second time */
if (try_again)
break;
PINF("upgrading quota donation for Env::RM session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return Pager_capability();
}
void remove_client(Pager_capability pager)
{
Rm_session_client::remove_client(pager);
}
};
class Expanding_ram_session_client : public Ram_session_client
{
Ram_session_capability _cap;
public:
Expanding_ram_session_client(Ram_session_capability cap)
: Ram_session_client(cap), _cap(cap) { }
Ram_dataspace_capability alloc(size_t size, bool cached) {
bool try_again = false;
do {
try {
return Ram_session_client::alloc(size, cached);
} catch (Ram_session::Out_of_metadata) {
/* give up if the error occurred a second time */
if (try_again)
break;
PINF("upgrading quota donation for Env::RAM session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return Ram_dataspace_capability();
}
};
class Expanding_cpu_session_client : public Cpu_session_client
{
Cpu_session_capability _cap;
public:
Expanding_cpu_session_client(Cpu_session_capability cap)
: Cpu_session_client(cap), _cap(cap) { }
Thread_capability create_thread(Name const &name, addr_t utcb) {
bool try_again = false;
do {
try {
return Cpu_session_client::create_thread(name, utcb);
} catch (Cpu_session::Out_of_metadata) {
/* give up if the error occurred a second time */
if (try_again)
break;
PINF("upgrading quota donation for Env::CPU session");
env()->parent()->upgrade(_cap, "ram_quota=8K");
try_again = true;
}
} while (try_again);
return Thread_capability();
}
};
private:
Parent_client _parent_client;
struct Resources
{
Ram_session_capability ram_cap;
Expanding_ram_session_client ram;
Cpu_session_capability cpu_cap;
Expanding_cpu_session_client cpu;
Expanding_rm_session_client rm;
Pd_session_client pd;
Resources(Parent &parent)
:
ram_cap(static_cap_cast<Ram_session>(parent.session("Env::ram_session", ""))),
ram(ram_cap),
cpu_cap(static_cap_cast<Cpu_session>(parent.session("Env::cpu_session", ""))),
cpu(cpu_cap),
rm(static_cap_cast<Rm_session>(parent.session("Env::rm_session", ""))),
pd(static_cap_cast<Pd_session>(parent.session("Env::pd_session", "")))
{ }
};
Resources _resources;
Heap _heap;
char _initial_junk[sizeof(addr_t) * 4096];
public:
/**
* Standard constructor
*/
Platform_env()
:
_parent_client(Genode::parent_cap()),
_resources(_parent_client),
_heap(&_resources.ram, &_resources.rm, Heap::UNLIMITED,
_initial_junk, sizeof(_initial_junk))
{ }
void reload_parent_cap(Native_capability::Dst, long);
/*******************
** Env interface **
*******************/
Parent *parent() { return &_parent_client; }
Ram_session *ram_session() { return &_resources.ram; }
Ram_session_capability ram_session_cap() { return _resources.ram_cap; }
Cpu_session *cpu_session() { return &_resources.cpu; }
Cpu_session_capability cpu_session_cap() { return _resources.cpu_cap; }
Rm_session *rm_session() { return &_resources.rm; }
Pd_session *pd_session() { return &_resources.pd; }
Allocator *heap() { return &_heap; }
};
struct Expanding_rm_session_client;
struct Expanding_cpu_session_client;
class Platform_env;
}
#endif /* _INCLUDE__BASE__PLATFORM_ENV_H_ */
struct Genode::Expanding_rm_session_client : Upgradeable_client<Genode::Rm_session_client>
{
Expanding_rm_session_client(Rm_session_capability cap)
: Upgradeable_client<Genode::Rm_session_client>(cap) { }
Local_addr attach(Dataspace_capability ds, size_t size, off_t offset,
bool use_local_addr, Local_addr local_addr,
bool executable)
{
return retry<Rm_session::Out_of_metadata>(
[&] () {
return Rm_session_client::attach(ds, size, offset,
use_local_addr,
local_addr,
executable); },
[&] () { upgrade_ram(8*1024); });
}
Pager_capability add_client(Thread_capability thread)
{
return retry<Rm_session::Out_of_metadata>(
[&] () { return Rm_session_client::add_client(thread); },
[&] () { upgrade_ram(8*1024); });
}
};
struct Genode::Expanding_cpu_session_client : Upgradeable_client<Genode::Cpu_session_client>
{
Expanding_cpu_session_client(Genode::Cpu_session_capability cap)
:
/*
* We need to upcast the capability because on some platforms (i.e.,
* NOVA), 'Cpu_session_client' refers to a platform-specific session
* interface ('Nova_cpu_session').
*/
Upgradeable_client<Genode::Cpu_session_client>
(static_cap_cast<Genode::Cpu_session_client::Rpc_interface>(cap))
{ }
Thread_capability create_thread(Name const &name, addr_t utcb)
{
return retry<Cpu_session::Out_of_metadata>(
[&] () { return Cpu_session_client::create_thread(name, utcb); },
[&] () { upgrade_ram(8*1024); });
}
};
class Genode::Platform_env : public Genode::Env
{
private:
Parent_client _parent_client;
struct Resources
{
template <typename T>
Capability<T> request(Parent &parent, char const *service) {
return static_cap_cast<T>(parent.session(service, "")); }
Ram_session_capability ram_cap;
Expanding_ram_session_client ram = { ram_cap };
Cpu_session_capability cpu_cap;
Expanding_cpu_session_client cpu = { cpu_cap };
Expanding_rm_session_client rm;
Pd_session_client pd;
Resources(Parent &parent) :
ram_cap(request<Ram_session>(parent, "Env::ram_session")),
cpu_cap(request<Cpu_session>(parent, "Env::cpu_session")),
rm (request<Rm_session> (parent, "Env::rm_session")),
pd (request<Pd_session> (parent, "Env::pd_session"))
{ }
};
Resources _resources;
Heap _heap;
char _initial_junk[sizeof(addr_t) * 4096];
public:
/**
* Standard constructor
*/
Platform_env()
:
_parent_client(Genode::parent_cap()),
_resources(_parent_client),
_heap(&_resources.ram, &_resources.rm, Heap::UNLIMITED,
_initial_junk, sizeof(_initial_junk))
{ }
void reload_parent_cap(Native_capability::Dst, long);
/*******************
** Env interface **
*******************/
Parent *parent() { return &_parent_client; }
Ram_session *ram_session() { return &_resources.ram; }
Ram_session_capability ram_session_cap() { return _resources.ram_cap; }
Cpu_session *cpu_session() { return &_resources.cpu; }
Cpu_session_capability cpu_session_cap() { return _resources.cpu_cap; }
Rm_session *rm_session() { return &_resources.rm; }
Pd_session *pd_session() { return &_resources.pd; }
Allocator *heap() { return &_heap; }
};
#endif /* _PLATFORM_ENV_H_ */

85
base/src/base/env/platform_env_common.h vendored Normal file
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@ -0,0 +1,85 @@
/*
* \brief Platform environment of Genode process
* \author Norman Feske
* \date 2013-09-25
*
* Parts of 'Platform_env' shared accross all base platforms.
*/
/*
* Copyright (C) 2006-2013 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 _PLATFORM_ENV_COMMON_H_
#define _PLATFORM_ENV_COMMON_H_
#include <base/env.h>
#include <parent/client.h>
#include <ram_session/client.h>
#include <rm_session/client.h>
#include <cpu_session/client.h>
#include <pd_session/client.h>
namespace Genode {
class Expanding_rm_session_client;
class Expanding_ram_session_client;
class Expanding_cpu_session_client;
}
/**
* Repeatedly try to execute a function 'func'
*
* If the function 'func' throws an exception of type 'EXC', the 'handler'
* is called and the function call is retried.
*/
template <typename EXC, typename FUNC, typename HANDLER>
auto retry(FUNC func, HANDLER handler) -> decltype(func())
{
for (;;)
try { return func(); }
catch (EXC) { handler(); }
}
/**
* Client object for a session that may get its session quota upgraded
*/
template <typename CLIENT>
struct Upgradeable_client : CLIENT
{
typedef Genode::Capability<typename CLIENT::Rpc_interface> Capability;
Capability _cap;
Upgradeable_client(Capability cap) : CLIENT(cap), _cap(cap) { }
void upgrade_ram(Genode::size_t quota)
{
PINF("upgrading quota donation for Env::%s (%zd bytes)",
CLIENT::Rpc_interface::service_name(), quota);
char buf[128];
Genode::snprintf(buf, sizeof(buf), "ram_quota=%zd", quota);
Genode::env()->parent()->upgrade(_cap, buf);
}
};
struct Genode::Expanding_ram_session_client : Upgradeable_client<Genode::Ram_session_client>
{
Expanding_ram_session_client(Ram_session_capability cap)
: Upgradeable_client<Genode::Ram_session_client>(cap) { }
Ram_dataspace_capability alloc(size_t size, bool cached)
{
return retry<Ram_session::Out_of_metadata>(
[&] () { return Ram_session_client::alloc(size, cached); },
[&] () { upgrade_ram(8*1024); });
}
};
#endif /* _PLATFORM_ENV_COMMON_H_ */