120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
/*
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* \brief Basic types used by the tracing infrastructure
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* \author Norman Feske
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* \date 2013-08-12
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*/
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#ifndef _INCLUDE__BASE__TRACE__TYPES_H_
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#define _INCLUDE__BASE__TRACE__TYPES_H_
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/* Genode includes */
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#include <util/string.h>
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namespace Genode { namespace Trace {
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/*********************
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** Exception types **
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*********************/
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struct Policy_too_large : Exception { };
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struct Out_of_metadata : Exception { };
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struct Nonexistent_subject : Exception { };
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struct Already_traced : Exception { };
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struct Source_is_dead : Exception { };
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struct Nonexistent_policy : Exception { };
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struct Traced_by_other_session : Exception { };
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struct Subject_not_traced : Exception { };
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template <size_t MAX>
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struct String
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{
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enum { MAX_SIZE = MAX };
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char buf[MAX];
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size_t length;
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String() : length(0) { }
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String(char const *str) : length(min(strlen(str) + 1, MAX))
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{
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strncpy(buf, str, length);
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}
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bool valid() const {
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return (length < MAX) && (length > 0) && (buf[length - 1] == '\0'); }
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char const *string() const { return valid() ? buf : ""; }
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};
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typedef String<160> Session_label;
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typedef String<64> Thread_name;
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struct Policy_id;
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struct Subject_id;
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struct Subject_info;
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} }
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/**
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* Session-local policy identifier
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*/
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struct Genode::Trace::Policy_id
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{
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unsigned id;
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Policy_id() : id(0) { }
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Policy_id(unsigned id) : id(id) { }
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bool operator == (Policy_id const &other) { return id == other.id; }
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};
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/**
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* Session-local trace-subject identifier
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*/
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struct Genode::Trace::Subject_id
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{
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unsigned id;
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Subject_id() : id(0) { }
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Subject_id(unsigned id) : id(id) { }
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bool operator == (Subject_id const &other) { return id == other.id; }
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};
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/**
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* Subject information
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*/
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class Genode::Trace::Subject_info
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{
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public:
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enum State { INVALID, UNTRACED, TRACED, FOREIGN, ERROR, DEAD };
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private:
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Session_label _session_label;
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Thread_name _thread_name;
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State _state;
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Policy_id _policy_id;
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public:
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Subject_info() : _state(INVALID) { }
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Subject_info(Session_label const &session_label,
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Thread_name const &thread_name,
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State state, Policy_id policy_id)
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:
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_session_label(session_label), _thread_name(thread_name),
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_state(state), _policy_id(policy_id)
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{ }
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Session_label const &session_label() const { return _session_label; }
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Thread_name const &thread_name() const { return _thread_name; }
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State state() const { return _state; }
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Policy_id policy_id() const { return _policy_id; }
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};
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#endif /* _INCLUDE__BASE__TRACE__TYPES_H_ */
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