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core: provide thread exec times via TRACE service

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This patch enable clients of core's TRACE service to obtain the
execution times of trace subjects (i.e., threads). The execution time is
delivered as part of the 'Subject_info' structure.

Right now, the feature is available solely on NOVA. On all other base
platforms, the returned execution times are 0.

Issue #813
This commit is contained in:
Norman Feske
2015-06-11 23:05:02 +02:00
committed by Christian Helmuth
parent fbe44f08d4
commit 959572968d
20 changed files with 226 additions and 51 deletions
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22
repos/base-linux/src/core/include/cpu_session_component.h
View File

@ -45,7 +45,8 @@ namespace Genode {
class Cpu_thread_component : public Rpc_object<Cpu_thread>,
public List<Cpu_thread_component>::Element
public List<Cpu_thread_component>::Element,
public Trace::Source::Info_accessor
{
public:
@ -54,6 +55,7 @@ namespace Genode {
private:
Session_label const _session_label;
Thread_name const _name;
Platform_thread _platform_thread;
bool _bound; /* pd binding flag */
@ -72,15 +74,27 @@ namespace Genode {
unsigned trace_control_index,
Trace::Control &trace_control)
:
_name(name),
_session_label(label), _name(name),
_platform_thread(name.string(), priority, utcb), _bound(false),
_sigh(sigh), _trace_control_index(trace_control_index),
_trace_source(label, _name, trace_control)
_trace_source(*this, trace_control)
{
update_exception_sigh();
}
/********************************************
** Trace::Source::Info_accessor interface **
********************************************/
Trace::Source::Info trace_source_info() const
{
return { _session_label, _name,
_platform_thread.execution_time(),
_platform_thread.affinity() };
}
/************************
** Accessor functions **
************************/
@ -218,7 +232,7 @@ namespace Genode {
Dataspace_capability trace_buffer(Thread_capability);
Dataspace_capability trace_policy(Thread_capability);
int ref_account(Cpu_session_capability c);
int transfer_quota(Cpu_session_capability c, size_t q);
int transfer_quota(Cpu_session_capability, size_t);
Quota quota() override;

7
repos/base-linux/src/core/include/platform_thread.h
View File

@ -126,7 +126,7 @@ namespace Genode {
/**
* Request the affinity of this thread
*/
Affinity::Location affinity() { return Affinity::Location(); }
Affinity::Location affinity() const { return Affinity::Location(); }
/**
* Register process ID and thread ID of thread
@ -158,6 +158,11 @@ namespace Genode {
* Set CPU quota of the thread to 'quota'
*/
void quota(size_t const quota) { /* not supported*/ }
/**
* Return execution time consumed by the thread
*/
unsigned long long execution_time() const { return 0; }
};
}