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linux: add expanding Cpu_session_client

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This commit is contained in:
Josef Söntgen 2013-08-12 13:00:15 +02:00 committed by Norman Feske
parent 149356f7ab
commit 32e3eee48c
1 changed files with 32 additions and 2 deletions
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34
base-linux/src/base/env/platform_env.h vendored
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@ -293,7 +293,8 @@ namespace Genode {
Expanding_ram_session_client(Ram_session_capability cap)
: Ram_session_client(cap), _cap(cap) { }
Ram_dataspace_capability alloc(size_t size, bool cached) {
Ram_dataspace_capability alloc(size_t size, bool cached)
{
bool try_again;
do {
try_again = false;
@ -316,6 +317,35 @@ namespace Genode {
}
};
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 **
@ -324,7 +354,7 @@ namespace Genode {
Ram_session_capability _ram_session_cap;
Expanding_ram_session_client _ram_session_client;
Cpu_session_capability _cpu_session_cap;
Linux_cpu_session_client _cpu_session_client;
Expanding_cpu_session_client _cpu_session_client;
Rm_session_mmap _rm_session_mmap;
Pd_session_client _pd_session_client;