forked from enlightenment/efl
744 lines
19 KiB
C
744 lines
19 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2008 Cedric Bail
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @page tutorial_benchmark_page Benchmark Tutorial
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*
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* The Benchmark module allows you to write easily benchmarks
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* framework in a project for timing critical part and detect slow
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* parts of code. In addition it automatically creates data files of
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* these benchmark, as well as a gnuplot file which can display the
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* comparison curves of the benchmarks.
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*
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* @section tutorial_benchmark_basic_usage Basic Usage
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*
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* To create a basic benchmark, you have to follow these steps:
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*
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* @li Create a new bechmark
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* @li Write the functions that wraps the the functions you want to
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* bechmark.
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* @li Register these wrappers functions.
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* @li Run the benchmark.
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* @li Free the memory.
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*
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* Here is a basic example of bechmark which creates two functions
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* that will be run. These functions just print a message.
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*
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* @code
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* #include <stdlib.h>
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* #include <stdio.h>
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*
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* #include <Eina.h>
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*
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* static
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* void work1(int request)
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* {
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* printf ("work1 in progress... Request: %d\n", request);
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* }
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*
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* static
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* void work2(int request)
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* {
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* printf ("work2 in progress... Request: %d\n", request);
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* }
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*
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* int main()
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* {
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* Eina_Benchmark *test;
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* Eina_Array *ea;
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*
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* if (!eina_init())
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* return EXIT_FAILURE;
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*
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* test = eina_benchmark_new("test", "run");
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* if (!test)
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* goto shutdown_eina;
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*
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* eina_benchmark_register(test, "work-1", EINA_BENCHMARK(work1), 200, 300, 10);
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* eina_benchmark_register(test, "work-2", EINA_BENCHMARK(work2), 100, 150, 5);
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*
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* ea = eina_benchmark_run(test);
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*
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* eina_benchmark_free(test);
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* eina_shutdown();
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*
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* return EXIT_SUCCESS;
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*
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* shutdown_eina:
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* eina_shutdown();
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*
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* return EXIT_FAILURE;
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* }
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* @endcode
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*
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* As "test", "run" are passed to eina_benchmark_new() and as the tests
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* "work-1" and "work-2" are registered, the data files
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* bench_test_run.work-1.data and bench_test_run.work-2.data will be
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* created after the eina_benchmark_run() call. They contain four
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* columns. The file bench_test_run.work-1.data contains for example:
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*
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* @code
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* # specimen experiment time starting time ending time
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* 200 23632 2852446 2876078
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* 210 6924 2883046 2889970
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* 220 6467 2895962 2902429
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* 230 6508 2908271 2914779
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* 240 6278 2920610 2926888
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* 250 6342 2932830 2939172
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* 260 6252 2944954 2951206
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* 270 6463 2956978 2963441
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* 280 6347 2969548 2975895
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* 290 6457 2981702 2988159
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* @endcode
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*
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* The first column (specimen) is the integer passed to the work1()
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* function when the test is run. The second column (experiment time)
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* is the time, in nanosecond, that work1() takes. The third and
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* fourth columnd are self-explicit.
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*
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* You can see that the integer passed work1() starts from 200 and
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* finishes at 290, with a step of 10. These values are computed withe
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* last 3 values passed to eina_benchmark_register(). See the document
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* of that function for the detailed behavior.
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*
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* The gnuplot file will be named bench_test_run.gnuplot. Just run:
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*
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* @code
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* gnuplot bench_test_run.gnuplot
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* @endcode
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*
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* to create the graphic of the comparison curves. The image file is
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* named output_test_run.png.
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*
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* @section tutorial_benchmark_advanced_usage More Advanced Usage
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*
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* In this section, several test will be created and run. The idea is
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* exactly the same than in the previous section, but with some basic
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* automatic way to run all the benchmarks. The following code
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* benchmarks some Eina converts functions, and some Eina containers
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* types:
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*
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* @code
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* #include <stdlib.h>
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* #include <stdio.h>
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* #include <time.h>
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*
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* #include <Eina.h>
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*
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* static void bench_convert(Eina_Benchmark *bench);
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* static void bench_container(Eina_Benchmark *bench);
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*
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* typedef struct _Benchmark_Case Benchmark_Case;
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*
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* struct _Benchmark_Case
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* {
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* const char *bench_case;
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* void (*build)(Eina_Benchmark *bench);
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* };
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*
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* static const Benchmark_Case benchmarks[] = {
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* { "Bench 1", bench_convert },
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* { "Bench 2", bench_container },
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* { NULL, NULL }
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* };
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*
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* static
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* void convert1(int request)
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* {
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* char tmp[128];
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* int i;
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*
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* srand(time(NULL));
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*
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* for (i = 0; i < request; ++i)
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* eina_convert_itoa(rand(), tmp);
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* }
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*
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* static
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* void convert2(int request)
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* {
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* char tmp[128];
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* int i;
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*
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* srand(time(NULL));
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*
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* for (i = 0; i < request; ++i)
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* eina_convert_xtoa(rand(), tmp);
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* }
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*
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* static void
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* bench_convert(Eina_Benchmark *bench)
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* {
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* eina_benchmark_register(bench, "convert-1", EINA_BENCHMARK(convert1), 200, 400, 10);
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* eina_benchmark_register(bench, "convert-2", EINA_BENCHMARK(convert2), 200, 400, 10);
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* }
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*
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* static
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* void array(int request)
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* {
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* Eina_Array *array;
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* Eina_Array_Iterator it;
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* int *data;
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* int i;
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*
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* srand(time(NULL));
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*
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* array = eina_array_new(64);
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*
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* for (i = 0; i < request; ++i)
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* {
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* data = (int *)malloc(sizeof(int));
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* if (!data) continue;
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* *data = rand();
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* eina_array_push(array, data);
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* }
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*
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* EINA_ARRAY_ITER_NEXT(array, i, data, it)
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* free(data);
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*
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* eina_array_free(array);
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* }
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*
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* static
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* void list(int request)
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* {
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* Eina_List *l = NULL;
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* int *data;
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* int i;
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*
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* srand(time(NULL));
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*
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* for (i = 0; i < request; ++i)
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* {
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* data = (int *)malloc(sizeof(int));
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* if (!data) continue;
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* *data = rand();
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* l = eina_list_prepend(l, data);
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* }
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*
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* while (l)
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* {
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* free(eina_list_data_get(l));
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* l = eina_list_remove_list(l, l);
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* }
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* }
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*
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* static void
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* bench_container(Eina_Benchmark *bench)
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* {
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* eina_benchmark_register(bench, "array", EINA_BENCHMARK(array), 200, 300, 10);
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* eina_benchmark_register(bench, "list", EINA_BENCHMARK(list), 200, 300, 10);
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* }
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*
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* int main()
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* {
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* Eina_Benchmark *test;
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* Eina_Array *ea;
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* unsigned int i;
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*
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* if (!eina_init())
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* return EXIT_FAILURE;
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*
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* for (i = 0; benchmarks[i].bench_case != NULL; ++i)
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* {
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* test = eina_benchmark_new(benchmarks[i].bench_case, "Benchmark example");
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* if (!test)
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* continue;
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*
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* benchmarks[i].build(test);
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*
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* ea = eina_benchmark_run(test);
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*
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* eina_benchmark_free(test);
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* }
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*
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* eina_shutdown();
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*
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* return EXIT_SUCCESS;
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* }
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* @endcode
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*
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* gnuplot can be used to see how are performed the convert functions
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* together, as well as how are performed the containers. So it is now
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* easy to see that the hexadecimal convert function is faster than
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* the decimal one, and that arrays are faster than lists.
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*
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* You can improve all that by executing automatically gnuplot in your
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* program, or integrate the Eina benchmark framework in an autotooled
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* project. See that
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* <a href="http://trac.enlightenment.org/e/wiki/AutotoolsIntegration#Benchmark">page</a>
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* for more informations.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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#elif defined __GNUC__
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# define alloca __builtin_alloca
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#elif defined _AIX
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# define alloca __alloca
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#elif defined _MSC_VER
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# include <malloc.h>
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# define alloca _alloca
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#else
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C"
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# endif
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void *alloca (size_t);
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_EVIL
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# include <Evil.h>
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#endif
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#include "eina_config.h"
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#include "eina_private.h"
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#include "eina_log.h"
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#include "eina_benchmark.h"
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#include "eina_inlist.h"
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#include "eina_list.h"
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#include "eina_counter.h"
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/*============================================================================*
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* Local *
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*============================================================================*/
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/**
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* @cond LOCAL
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*/
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#define EINA_BENCHMARK_FILENAME_MASK "bench_%s_%s.gnuplot"
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#define EINA_BENCHMARK_DATA_MASK "bench_%s_%s.%s.data"
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typedef struct _Eina_Run Eina_Run;
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struct _Eina_Run
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{
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EINA_INLIST;
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Eina_Benchmark_Specimens cb;
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const char *name;
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int start;
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int end;
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int step;
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};
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struct _Eina_Benchmark
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{
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const char *name;
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const char *run;
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Eina_Inlist *runs;
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Eina_List *names;
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};
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static int _eina_benchmark_log_dom = -1;
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#ifdef ERR
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#undef ERR
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#endif
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#define ERR(...) EINA_LOG_DOM_ERR(_eina_benchmark_log_dom, __VA_ARGS__)
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#ifdef DBG
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#undef DBG
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#endif
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#define DBG(...) EINA_LOG_DOM_DBG(_eina_benchmark_log_dom, __VA_ARGS__)
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/**
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* @endcond
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*/
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/*============================================================================*
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* Global *
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*============================================================================*/
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/**
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* @internal
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* @brief Initialize the benchmark module.
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*
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function sets up the benchmark module of Eina. It is called by
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* eina_init().
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*
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* @see eina_init()
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*/
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Eina_Bool
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eina_benchmark_init(void)
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{
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_eina_benchmark_log_dom = eina_log_domain_register("eina_benchmark",
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EINA_LOG_COLOR_DEFAULT);
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if (_eina_benchmark_log_dom < 0)
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{
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EINA_LOG_ERR("Could not register log domain: eina_benchmark");
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return EINA_FALSE;
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}
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return EINA_TRUE;
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}
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/**
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* @internal
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* @brief Shut down the benchmark module.
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*
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function shuts down the benchmark module set up by
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* eina_benchmark_init(). It is called by eina_shutdown().
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*
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* @see eina_shutdown()
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*/
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Eina_Bool
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eina_benchmark_shutdown(void)
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{
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eina_log_domain_unregister(_eina_benchmark_log_dom);
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_eina_benchmark_log_dom = -1;
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return EINA_TRUE;
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}
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/*============================================================================*
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* API *
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*============================================================================*/
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/**
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* @addtogroup Eina_Benchmark_Group Benchmark
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*
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* These functions allow you to add benchmark framework in a project
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* for timing critical part and detect slow parts of code. It is used
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* in Eina to compare the time used by eina, glib, evas and ecore data
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* types.
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*
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* To use the benchmark module, Eina must be initialized with
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* eina_init() and later shut down with eina_shutdown(). A benchmark
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* is created with eina_benchmark_new() and freed with
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* eina_benchmark_free().
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*
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* eina_benchmark_register() adds a test to a benchmark. That test can
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* be run a certain amount of times. Adding more than one test to be
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* executed allows the comparison between several parts of a program,
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* or different implementations.
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*
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* eina_benchmark_run() runs all the tests registered with
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* eina_benchmark_register(). The amount of time of each test is
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* written in a gnuplot file.
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*
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* For more information, you can look at the @ref tutorial_benchmark_page.
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*
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* @{
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*/
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/**
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* @brief Create a new array.
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*
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* @param name The name of the benchmark.
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* @param run The name of the run.
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* @return @c NULL on failure, non @c NULL otherwise.
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*
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* This function creates a new benchmark. @p name and @p run are used
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* to name the gnuplot file that eina_benchmark_run() will create.
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*
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* This function return a valid benchmark on success, or @c NULL if
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* memory allocation fails. In that case, the error is set to
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* #EINA_ERROR_OUT_OF_MEMORY.
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*
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* When the new module is not needed anymore, use
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* eina_benchmark_free() to free the allocated memory.
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*/
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EAPI Eina_Benchmark *
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eina_benchmark_new(const char *name, const char *run)
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{
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Eina_Benchmark *new;
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eina_error_set(0);
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new = calloc(1, sizeof (Eina_Benchmark));
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if (!new)
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{
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eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
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return NULL;
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}
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new->name = name;
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new->run = run;
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return new;
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}
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/**
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* @brief Free a benchmark object.
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*
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* @param bench The benchmark to free.
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*
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* This function removes all the benchmark tests that have been
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* registered and frees @p bench. If @p bench is @c NULL, this
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* function returns immediatly.
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*/
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EAPI void
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eina_benchmark_free(Eina_Benchmark *bench)
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{
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Eina_Array *names;
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if (!bench)
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return;
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while (bench->runs)
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{
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Eina_Run *run = (Eina_Run *)bench->runs;
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bench->runs = eina_inlist_remove(bench->runs, bench->runs);
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free(run);
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}
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EINA_LIST_FREE(bench->names, names)
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{
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Eina_Array_Iterator it;
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char *tmp;
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unsigned int i;
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EINA_ARRAY_THREADSAFE_ITER_NEXT(names, i, tmp, it,
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free(tmp);
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);
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eina_array_free(names);
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}
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free(bench);
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}
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/**
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* @brief Add a test to a benchmark.
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*
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* @param bench The benchmark.
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* @param name The name of the test.
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* @param bench_cb The test function to be called.
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* @param count_start The start data to be passed to @p bench_cb.
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* @param count_end The end data to be passed to @p bench_cb.
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* @param count_step The step data to be passed to @p bench_cb.
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*
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* This function adds the test named @p name to @p benchmark. @p
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* bench_cb is the function called when the test is executed. That
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* test can be executed a certain amount of time. @p start, @p end and
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* @p step define a loop with a step increment. The integer that is
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|
* increasing by @p step from @p start to @p end is passed to @p
|
|
* bench_cb when eina_benchmark_run() is called.
|
|
*
|
|
* If @p bench is @c NULL, this function returns imediatly. If the
|
|
* allocation of the memory of the test to add fails, the error is set
|
|
* to #EINA_ERROR_OUT_OF_MEMORY.
|
|
*/
|
|
EAPI Eina_Bool
|
|
eina_benchmark_register(Eina_Benchmark *bench,
|
|
const char *name,
|
|
Eina_Benchmark_Specimens bench_cb,
|
|
int count_start,
|
|
int count_end,
|
|
int count_step)
|
|
{
|
|
Eina_Run *run;
|
|
|
|
if (!bench)
|
|
return EINA_FALSE;
|
|
|
|
if (count_step == 0)
|
|
return EINA_FALSE;
|
|
|
|
eina_error_set(0);
|
|
run = calloc(1, sizeof (Eina_Run));
|
|
if (!run)
|
|
{
|
|
eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
|
|
return EINA_FALSE;
|
|
}
|
|
|
|
run->cb = bench_cb;
|
|
run->name = name;
|
|
run->start = count_start;
|
|
run->end = count_end;
|
|
run->step = count_step;
|
|
|
|
bench->runs = eina_inlist_append(bench->runs, EINA_INLIST_GET(run));
|
|
|
|
return EINA_TRUE;
|
|
}
|
|
|
|
/**
|
|
* @brief Run the benchmark tests that have been registered.
|
|
*
|
|
* @param bench The benchmark.
|
|
* @return The list of names of the test files.
|
|
*
|
|
* This function runs all the tests that as been registered with
|
|
* eina_benchmark_register() and save the result in a gnuplot
|
|
* file. The name of the file has the following format:
|
|
*
|
|
* @code
|
|
* bench_[name]_[run]%s.gnuplot
|
|
* @endcode
|
|
*
|
|
* where [name] and [run] are the values passed to
|
|
* eina_benchmark_new().
|
|
*
|
|
* Each registered test is executed and timed. The time is written to
|
|
* the gnuplot file. The number of times each test is executed is
|
|
* controlled by the parameters passed to eina_benchmark_register().
|
|
*
|
|
* If @p bench is @c NULL, this functions returns @c NULL
|
|
* immediatly. Otherwise, it returns the list of the names of each
|
|
* test.
|
|
*/
|
|
EAPI Eina_Array *
|
|
eina_benchmark_run(Eina_Benchmark *bench)
|
|
{
|
|
FILE *main_script;
|
|
FILE *current_data;
|
|
Eina_Array *ea;
|
|
Eina_Run *run;
|
|
char *buffer;
|
|
Eina_Bool first = EINA_FALSE;
|
|
size_t length;
|
|
|
|
if (!bench)
|
|
return NULL;
|
|
|
|
length = strlen(EINA_BENCHMARK_FILENAME_MASK) + strlen(bench->name) + strlen(
|
|
bench->run);
|
|
|
|
buffer = alloca(sizeof (char) * length);
|
|
if (!buffer)
|
|
return NULL;
|
|
|
|
snprintf(buffer,
|
|
length,
|
|
EINA_BENCHMARK_FILENAME_MASK,
|
|
bench->name,
|
|
bench->run);
|
|
|
|
main_script = fopen(buffer, "w");
|
|
if (!main_script)
|
|
return NULL;
|
|
|
|
ea = eina_array_new(16);
|
|
if (!ea)
|
|
{
|
|
fclose(main_script);
|
|
return NULL;
|
|
}
|
|
|
|
eina_array_push(ea, strdup(buffer));
|
|
|
|
fprintf(
|
|
main_script,
|
|
"set autoscale # scale axes automatically\n"
|
|
"unset log # remove any log-scaling\n"
|
|
"unset label # remove any previous labels\n"
|
|
"set xtic auto # set xtics automatically\n"
|
|
"set ytic auto # set ytics automatically\n"
|
|
/* "set logscale y\n" */
|
|
"set terminal png size 1024,768\n"
|
|
"set output \"output_%s_%s.png\"\n"
|
|
"set title \"%s %s\n"
|
|
"set xlabel \"tests\"\n"
|
|
"set ylabel \"time\"\n"
|
|
"plot ",
|
|
bench->name,
|
|
bench->run,
|
|
bench->name,
|
|
bench->run);
|
|
|
|
EINA_INLIST_FOREACH(bench->runs, run)
|
|
{
|
|
Eina_Counter *counter;
|
|
char *result;
|
|
size_t tmp;
|
|
int i;
|
|
|
|
tmp = strlen(EINA_BENCHMARK_DATA_MASK) + strlen(bench->name) + strlen(
|
|
bench->run) + strlen(run->name);
|
|
if (tmp > length)
|
|
{
|
|
buffer = alloca(sizeof (char) * tmp);
|
|
length = tmp;
|
|
}
|
|
|
|
snprintf(buffer,
|
|
length,
|
|
EINA_BENCHMARK_DATA_MASK,
|
|
bench->name,
|
|
bench->run,
|
|
run->name);
|
|
|
|
current_data = fopen(buffer, "w");
|
|
if (!current_data)
|
|
continue;
|
|
|
|
eina_array_push(ea, strdup(buffer));
|
|
|
|
counter = eina_counter_new(run->name);
|
|
|
|
for (i = run->start; i < run->end; i += run->step)
|
|
{
|
|
fprintf(stderr, "Run %s: %i\n", run->name, i);
|
|
eina_counter_start(counter);
|
|
|
|
run->cb(i);
|
|
|
|
eina_counter_stop(counter, i);
|
|
}
|
|
|
|
result = eina_counter_dump(counter);
|
|
if (result)
|
|
{
|
|
fprintf(current_data, "%s", result);
|
|
free(result);
|
|
}
|
|
|
|
eina_counter_free(counter);
|
|
|
|
fclose(current_data);
|
|
|
|
if (first == EINA_FALSE)
|
|
first = EINA_TRUE;
|
|
else
|
|
fprintf(main_script, ", \\\n");
|
|
|
|
fprintf(main_script,
|
|
"\"%s\" using 1:2 title \'%s\' with line",
|
|
buffer, run->name);
|
|
}
|
|
|
|
fprintf(main_script, "\n");
|
|
|
|
fclose(main_script);
|
|
|
|
bench->names = eina_list_append(bench->names, ea);
|
|
|
|
return ea;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|