#include <noise_generator.h>

Inheritance diagram for dynamorio::drmemtrace::noise_generator_t:

Public Member Functions
std::string	get_stream_name () const override

Public Member Functions inherited from dynamorio::drmemtrace::reader_t
uint64_t	get_record_ordinal () const override

uint64_t	get_instruction_ordinal () const override

uint64_t	get_last_timestamp () const override

uint64_t	get_first_timestamp () const override

uint64_t	get_version () const override

uint64_t	get_filetype () const override

uint64_t	get_cache_line_size () const override

uint64_t	get_chunk_instr_count () const override

uint64_t	get_page_size () const override

bool	is_record_kernel () const override

bool	is_record_synthetic () const override

Public Member Functions inherited from dynamorio::drmemtrace::memtrace_stream_t
virtual	~memtrace_stream_t ()

virtual int	get_shard_index () const

virtual int64_t	get_output_cpuid () const

virtual int64_t	get_workload_id () const

virtual int64_t	get_input_id () const

virtual int64_t	get_tid () const

virtual memtrace_stream_t *	get_input_interface () const

virtual double	get_schedule_statistic (schedule_statistic_t stat) const

Additional Inherited Members
Public Types inherited from dynamorio::drmemtrace::memtrace_stream_t
enum	schedule_statistic_t { SCHED_STAT_SWITCH_INPUT_TO_INPUT , SCHED_STAT_SWITCH_INPUT_TO_IDLE , SCHED_STAT_SWITCH_IDLE_TO_INPUT , SCHED_STAT_SWITCH_NOP , SCHED_STAT_QUANTUM_PREEMPTS , SCHED_STAT_DIRECT_SWITCH_ATTEMPTS , SCHED_STAT_DIRECT_SWITCH_SUCCESSES , SCHED_STAT_MIGRATIONS , SCHED_STAT_RUNQUEUE_STEALS , SCHED_STAT_RUNQUEUE_REBALANCES , SCHED_STAT_HIT_OUTPUT_LIMIT , SCHED_STAT_KERNEL_SWITCH_SEQUENCE_INJECTIONS , SCHED_STAT_KERNEL_SYSCALL_SEQUENCE_INJECTIONS , SCHED_STAT_TYPE_COUNT }

Detailed Description

Generates synthetic dynamorio::drmemtrace::memref_t trace records in a single-process single-thread and presents them via an iterator interface to the scheduler. These synthetic trace records are preceded by TRACE_TYPE_THREAD, TRACE_TYPE_PID, TRACE_MARKER_TYPE_TIMESTAMP records and followed by TRACE_TYPE_THREAD_EXIT, as this is the order of records that the scheduler expects. The value of TRACE_MARKER_TYPE_TIMESTAMP is (ULONG_MAX - 1), which is not a serial-or-interval-suited timestamp value for mixing with real workload inputs. A serial analysis combined with real workload inputs would have these synthetic records at the very end, while time interval analysis would not consider these records unless the interval is very large (likely beyond the end of real input workloads). Noise generation is suited for dynamic scheduling, where the scheduler will re-write the values of TRACE_MARKER_TYPE_TIMESTAMP. Note that this class does not support simultaneous use by concurrent threads.

Member Function Documentation

◆ get_stream_name()

std::string dynamorio::drmemtrace::noise_generator_t::get_stream_name ( ) const

overridevirtual

Returns a name for the memtrace stream. For stored offline traces, this is the base name of the trace on disk. For online traces, this is the name of the pipe.

Implements dynamorio::drmemtrace::memtrace_stream_t.

The documentation for this class was generated from the following file:

/home/runner/work/dynamorio/dynamorio/build_release-64/clients/include/drmemtrace/noise_generator.h

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ get_stream_name()