#include <cmath>#include <fstream>#include <numeric>#include <unistd.h>#include <sys/syscall.h>#include "common.hpp"
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Macros | |
| #define | CPU_ID 4 |
Functions | |
| int | bind_to_cpu (const unsigned cpu) |
| Attach current process to the selected core. More... | |
| std::pair< double, double > | calculate_statistics (const std::vector< long > values) |
| Calculate the mean and variance from the result of the run_benchmark. More... | |
| std::vector< unsigned > | get_sequence (const unsigned number) |
| For a given number return sequence of number from 0 to number - 1. More... | |
| char * | read_data_to_aligned_array (const std::string &filename) |
| Read binary data from the file. More... | |
| json | read_json_from_file (const std::string &filename) |
| Read JSON from the given file. More... | |
| unsigned long | tsc_recovery () |
| Measure the TSC on the machine. More... | |
| unsigned long | tsc_tick () |
| Return the current value of the TSC. More... | |
Macro Definition Documentation
◆ CPU_ID
| #define CPU_ID 4 |
Definition at line 34 of file common.cpp.
Function Documentation
◆ bind_to_cpu()
| int bind_to_cpu | ( | const unsigned | cpu | ) |
Attach current process to the selected core.
- Parameters
-
[in] cpu Core number.
- Returns
- 0 on success, -1 otherwise.
Definition at line 47 of file common.cpp.
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◆ calculate_statistics()
| std::pair<double, double> calculate_statistics | ( | const std::vector< long > | values | ) |
Calculate the mean and variance from the result of the run_benchmark.
- Parameters
-
[in] values Vector with result values.
- Returns
- std::pair where the first element is mean and the second one is standard deviation.
- Note
- It's not a general mean/stddev function it only works properly when feed with data from the benchmark function.
Definition at line 60 of file common.cpp.
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◆ get_sequence()
| std::vector<unsigned> get_sequence | ( | const unsigned | number | ) |
For a given number return sequence of number from 0 to number - 1.
- Parameters
-
[in] number Positive integer value.
- Returns
- Vector with the sorted integer numbers between 0 and number - 1.
Definition at line 78 of file common.cpp.
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◆ read_data_to_aligned_array()
| char* read_data_to_aligned_array | ( | const std::string & | filename | ) |
Read binary data from the file.
- Parameters
-
[in] filename name of the binary file.
- Returns
- Pointer to the allocated memory with data from the file.
- Exceptions
-
std::runtime_error when memory cannot be allocated.
Definition at line 86 of file common.cpp.
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◆ read_json_from_file()
| json read_json_from_file | ( | const std::string & | filename | ) |
Read JSON from the given file.
- Parameters
-
[in] filename name of the .json file.
- Returns
- JSON object with data.
- Exceptions
-
missing_config_file_exception when file cannot be opened.
Definition at line 106 of file common.cpp.
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◆ tsc_recovery()
| unsigned long tsc_recovery | ( | ) |
Measure the TSC on the machine.
- Returns
- Number of ticks per us
Definition at line 119 of file common.cpp.
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◆ tsc_tick()
| unsigned long tsc_tick | ( | ) |
Return the current value of the TSC.
- Returns
- Current TSC value
Definition at line 162 of file common.cpp.
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