4coder/buffer/4coder_test_main.cpp

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2015-11-06 19:54:24 +00:00
/*
* Mr. 4th Dimention - Allen Webster
* Four Tech
*
* public domain -- no warranty is offered or implied; use this code at your own risk
*
* 06.11.2015
*
* Buffer experiment testing layer
*
*/
// TOP
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#define inline_4tech inline
inline_4tech int
CEIL32(float x){
int extra;
extra = ((x!=(int)(x) && x>0)?1:0);
extra += (int)(x);
return(extra);
}
inline_4tech int
DIVCEIL32(int n, int d) {
int q = (n/d);
q += (q*d < n);
return(q);
}
inline_4tech unsigned int
ROUNDPOT32(unsigned int v){
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return(v);
}
#ifdef fast_test
#define debug_4tech(x)
#define assert_4tech(x)
#endif
#define hard_assert_4tech(x) assert(x)
#include "4coder_shared.cpp"
#include "4coder_golden_array.cpp"
#include "4coder_gap_buffer.cpp"
#include "4coder_multi_gap_buffer.cpp"
#include "4coder_rope_buffer.cpp"
#define Buffer_Type Buffer
#include "4coder_buffer_abstract.cpp"
#undef Buffer_Type
#define Buffer_Type Gap_Buffer
#include "4coder_buffer_abstract.cpp"
#undef Buffer_Type
#define Buffer_Type Multi_Gap_Buffer
#include "4coder_buffer_abstract.cpp"
#undef Buffer_Type
#define Buffer_Type Rope_Buffer
#include "4coder_buffer_abstract.cpp"
#undef Buffer_Type
#undef Buffer_Init_Type
#undef Buffer_Stringify_Type
#undef Buffer_Backify_Type
#ifdef _WIN32
#include <Windows.h>
typedef unsigned long long time_int;
unsigned long long win32_counts_per_second_4tech;
int time_init(unsigned long long *resolution){
int result;
LARGE_INTEGER time;
result = 0;
if (QueryPerformanceFrequency(&time)){
win32_counts_per_second_4tech = (unsigned long long)(time.QuadPart);
result = 1;
*resolution = win32_counts_per_second_4tech;
}
return(result);
}
time_int get_time(){
LARGE_INTEGER time;
time_int result;
result = 0;
if (QueryPerformanceCounter(&time)){
result = (time_int)(time.QuadPart);
result = result * 1000000 / win32_counts_per_second_4tech;
}
return(result);
}
#else
#error Timer not supported by this platform
#endif
void setup(){
unsigned long long resolution;
if (!time_init(&resolution)){
printf("error: could not initialize timer");
exit(1);
}
if (resolution < 1000000)
printf("warning: timer is not actually at high enough resolution for good measurements!\n");
}
typedef struct File_Data{
char *data;
int size;
} File_Data;
File_Data get_file(char *filename){
FILE *file;
File_Data result;
file = fopen(filename, "rb");
if (!file){
printf("error: could not find file %s\n", filename);
exit(1);
}
fseek(file, 0, SEEK_END);
result.size = ftell(file);
fseek(file, 0, SEEK_SET);
if (result.size == 0){
printf("error: file %s was empty\n", filename);
exit(1);
}
result.data = (char*)malloc(result.size);
fread(result.data, result.size, 1, file);
fclose(file);
return(result);
}
void free_file(File_Data file){
free(file.data);
}
typedef struct Time_Record{
time_int buffer;
time_int gap_buffer;
time_int multi_gap_buffer;
time_int rope_buffer;
} Time_Record;
typedef struct Record_Statistics{
Time_Record max, min;
Time_Record expected;
int count;
} Record_Statistics;
Time_Record
operator+(const Time_Record &a, const Time_Record &b){
Time_Record r;
r.buffer = a.buffer + b.buffer;
r.gap_buffer = a.gap_buffer + b.gap_buffer;
r.multi_gap_buffer = a.multi_gap_buffer + b.multi_gap_buffer;
r.rope_buffer = a.rope_buffer + b.rope_buffer;
return r;
}
#define minify(a,b) if ((a)>(b)) (a) = (b)
#define maxify(a,b) if ((a)<(b)) (a) = (b)
void
get_record_statistics(Record_Statistics *stats_out, Time_Record *records, int count){
Record_Statistics stats;
stats.max = records[0];
stats.min = records[0];
stats.expected = records[0];
stats.count = count;
Time_Record *record = records + 1;
for (int i = 1; i < count; ++i, ++record){
stats.expected = stats.expected + *record;
minify(stats.min.buffer, record->buffer);
minify(stats.min.gap_buffer, record->gap_buffer);
minify(stats.min.multi_gap_buffer, record->multi_gap_buffer);
minify(stats.min.rope_buffer, record->rope_buffer);
maxify(stats.max.buffer, record->buffer);
maxify(stats.max.gap_buffer, record->gap_buffer);
maxify(stats.max.multi_gap_buffer, record->multi_gap_buffer);
maxify(stats.max.rope_buffer, record->rope_buffer);
}
stats.expected.buffer /= count;
stats.expected.gap_buffer /= count;
stats.expected.multi_gap_buffer /= count;
stats.expected.rope_buffer /= count;
*stats_out = stats;
}
int test_is_silenced;
void
silence_test(){
test_is_silenced = 1;
}
void
print_record(Time_Record record){
printf("%-16s - %25lluus\n%-16s - %25lluus\n%-16s - %25lluus\n%-16s - %25lluus\n",
"Golden Array", record.buffer,
"Gap Buffer", record.gap_buffer,
"Multi-Gap Buffer", record.multi_gap_buffer,
"Rope", record.rope_buffer);
}
void
print_statistics(Time_Record *records, int count, Record_Statistics *stats_out){
Record_Statistics stats;
get_record_statistics(&stats, records, count);
if (!test_is_silenced){
printf("samples: %d\n", count);
printf("---averages---\n");
print_record(stats.expected);
printf("---max---\n");
print_record(stats.max);
printf("---min---\n");
print_record(stats.min);
}
if (stats_out) *stats_out = stats;
}
typedef struct Buffer_Set{
Buffer buffer;
Gap_Buffer gap_buffer;
Multi_Gap_Buffer multi_gap_buffer;
Rope_Buffer rope_buffer;
} Buffer_Set;
template<typename Buffer_Init_Type, typename Buffer_Type> void
init_buffer(Buffer_Type *buffer, File_Data file, void *scratch, int scratch_size){
*buffer = {};
Buffer_Init_Type init;
for (init = buffer_begin_init(buffer, file.data, file.size);
buffer_init_need_more(&init);){
int page_size = buffer_init_page_size(&init);
void *page = malloc(page_size);
buffer_init_provide_page(&init, page, page_size);
}
debug_4tech(int result =)
buffer_end_init(&init, scratch, scratch_size);
assert_4tech(result);
}
#define print_name() printf("%s:\n", __FUNCTION__)
void
initialization_test(Buffer_Set *set, File_Data file, int test_repitions,
void *scratch, int scratch_size, Record_Statistics *stats_out){
time_int tstart, tend;
Time_Record *init_time = (Time_Record*)scratch;
scratch = init_time + test_repitions;
assert_4tech(test_repitions*sizeof(*init_time) < scratch_size);
scratch_size -= test_repitions*sizeof(*init_time);
for (int i = 0; i < test_repitions; ++i){
tstart = get_time();
init_buffer<Buffer_Init>(&set->buffer, file, scratch, scratch_size);
tend = get_time();
init_time[i].buffer = tend - tstart;
tstart = get_time();
init_buffer<Gap_Buffer_Init>(&set->gap_buffer, file, scratch, scratch_size);
tend = get_time();
init_time[i].gap_buffer = tend - tstart;
tstart = get_time();
init_buffer<Multi_Gap_Buffer_Init>(&set->multi_gap_buffer, file, scratch, scratch_size);
tend = get_time();
init_time[i].multi_gap_buffer = tend - tstart;
tstart = get_time();
init_buffer<Rope_Buffer_Init>(&set->rope_buffer, file, scratch, scratch_size);
tend = get_time();
init_time[i].rope_buffer = tend - tstart;
if (i+1 != test_repitions){
free(set->buffer.data);
free(set->gap_buffer.data);
for (int j = 0; j < set->multi_gap_buffer.chunk_alloced; ++j){
free(set->multi_gap_buffer.gaps[j].data);
}
free(set->multi_gap_buffer.gaps);
free(set->rope_buffer.data);
free(set->rope_buffer.nodes);
}
}
if (!test_is_silenced) print_name();
print_statistics(init_time, test_repitions, stats_out);
if (!test_is_silenced) printf("\n");
test_is_silenced = 0;
}
template<typename Buffer_Type> void
measure_starts(Buffer_Type *buffer){
int max = 1 << 10;
buffer->line_starts = (int*)malloc(max*sizeof(int));
buffer->line_max = max;
Buffer_Measure_Starts state = {};
for (;buffer_measure_starts(&state, buffer);){
int max = buffer->line_max;
int count = state.count;
int target = count + 1;
max = target*2;
int *new_lines = (int*)malloc(max*sizeof(int));
memcpy_4tech(new_lines, buffer->line_starts, count*sizeof(int));
free(buffer->line_starts);
buffer->line_starts = new_lines;
buffer->line_max = max;
}
buffer->line_count = state.count;
}
void
measure_starts_test(Buffer_Set *set, int test_repitions,
void *scratch, int scratch_size, Record_Statistics *stats_out){
time_int tstart, tend;
Time_Record *measure_time = (Time_Record*)scratch;
scratch = measure_time + test_repitions;
assert_4tech(test_repitions*sizeof(*measure_time) < scratch_size);
scratch_size -= test_repitions*sizeof(*measure_time);
for (int i = 0; i < test_repitions; ++i){
tstart = get_time();
measure_starts(&set->buffer);
tend = get_time();
measure_time[i].buffer = tend - tstart;
tstart = get_time();
measure_starts(&set->gap_buffer);
tend = get_time();
measure_time[i].gap_buffer = tend - tstart;
tstart = get_time();
measure_starts(&set->multi_gap_buffer);
tend = get_time();
measure_time[i].multi_gap_buffer = tend - tstart;
tstart = get_time();
measure_starts(&set->rope_buffer);
tend = get_time();
measure_time[i].rope_buffer = tend - tstart;
if (i+1 != test_repitions){
free(set->buffer.line_starts);
free(set->gap_buffer.line_starts);
free(set->multi_gap_buffer.line_starts);
free(set->rope_buffer.line_starts);
}
}
if (!test_is_silenced) print_name();
print_statistics(measure_time, test_repitions, stats_out);
if (!test_is_silenced) printf("\n");
test_is_silenced = 0;
}
template<typename Buffer_Type> void
measure_widths(Buffer_Type *buffer){
int new_max = round_up_4tech(buffer->line_count, 1 << 10);
if (new_max < (1 << 10)) new_max = 1 << 10;
buffer->line_widths = (float*)malloc(new_max*sizeof(float));
buffer->widths_max = new_max;
buffer->widths_count = 0;
float glyph_width = 8.f;
buffer_measure_widths(buffer, &glyph_width, 0);
}
void
measure_widths_test(Buffer_Set *set, int test_repitions,
void *scratch, int scratch_size, Record_Statistics *stats_out){
time_int tstart, tend;
Time_Record *measure_time = (Time_Record*)scratch;
scratch = measure_time + test_repitions;
assert_4tech(test_repitions*sizeof(*measure_time) < scratch_size);
scratch_size -= test_repitions*sizeof(*measure_time);
for (int i = 0; i < test_repitions; ++i){
tstart = get_time();
measure_widths(&set->buffer);
tend = get_time();
measure_time[i].buffer = tend - tstart;
tstart = get_time();
measure_widths(&set->gap_buffer);
tend = get_time();
measure_time[i].gap_buffer = tend - tstart;
tstart = get_time();
measure_widths(&set->multi_gap_buffer);
tend = get_time();
measure_time[i].multi_gap_buffer = tend - tstart;
tstart = get_time();
measure_widths(&set->rope_buffer);
tend = get_time();
measure_time[i].rope_buffer = tend - tstart;
if (i+1 != test_repitions){
free(set->buffer.line_widths);
free(set->gap_buffer.line_widths);
free(set->multi_gap_buffer.line_widths);
free(set->rope_buffer.line_widths);
}
}
if (!test_is_silenced) print_name();
print_statistics(measure_time, test_repitions, stats_out);
if (!test_is_silenced) printf("\n");
test_is_silenced = 0;
}
int
page_compare(char *page_1, char *page_2, int page_size){
int result = 1;
for (int i = 0; i < page_size; ++i){
hard_assert_4tech(page_1[i] == page_2[i]);
}
return result;
}
void
stream_check_test(Buffer_Set *buffers, void *scratch, int scratch_size){
int i, page_size, size;
size = buffer_size(&buffers->buffer);
{
int size2;
size2 = buffer_size(&buffers->gap_buffer);
hard_assert_4tech(size == size2);
size2 = buffer_size(&buffers->multi_gap_buffer);
hard_assert_4tech(size == size2);
size2 = buffer_size(&buffers->rope_buffer);
hard_assert_4tech(size == size2);
}
page_size = 1 << 10;
char *page_1 = (char*)scratch;
char *page_2 = page_1 + page_size;
scratch_size -= page_size*2;
hard_assert_4tech(scratch_size > 0);
for (i = 0; i < size; i += page_size){
int end = i + page_size;
if (end > size) end = size;
buffer_stringify(&buffers->buffer, i, end, page_1);
buffer_stringify(&buffers->gap_buffer, i, end, page_2);
page_compare(page_1, page_2, page_size);
buffer_stringify(&buffers->multi_gap_buffer, i, end, page_2);
page_compare(page_1, page_2, page_size);
buffer_stringify(&buffers->rope_buffer, i, end, page_2);
page_compare(page_1, page_2, page_size);
}
}
int main(){
Buffer_Set buffers;
File_Data file;
void *scratch;
int scratch_size;
setup();
scratch_size = 1 << 20;
scratch = malloc(scratch_size);
file = get_file("test_file_1.cpp");
Record_Statistics init_rec, starts_rec, widths_rec;
initialization_test(&buffers, file, 100, scratch, scratch_size, &init_rec);
stream_check_test(&buffers, scratch, scratch_size);
measure_starts_test(&buffers, 100, scratch, scratch_size, &starts_rec);
measure_widths_test(&buffers, 100, scratch, scratch_size, &widths_rec);
Time_Record expected_file_open;
expected_file_open = init_rec.expected + starts_rec.expected + widths_rec.expected;
printf("average file open:\n");
print_record(expected_file_open);
return(0);
}
// BOTTOM