125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/* ========================================================================
|
|
|
|
(C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Please see https://computerenhance.com for more information
|
|
|
|
======================================================================== */
|
|
|
|
/* ========================================================================
|
|
LISTING 107
|
|
======================================================================== */
|
|
|
|
/* NOTE(casey): _CRT_SECURE_NO_WARNINGS is here because otherwise we cannot
|
|
call fopen(). If we replace fopen() with fopen_s() to avoid the warning,
|
|
then the code doesn't compile on Linux anymore, since fopen_s() does not
|
|
exist there.
|
|
|
|
What exactly the CRT maintainers were thinking when they made this choice,
|
|
I have no idea. */
|
|
#define _CRT_SECURE_NO_WARNINGS
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <math.h>
|
|
#include <sys/stat.h>
|
|
|
|
typedef uint8_t u8;
|
|
typedef uint32_t u32;
|
|
typedef uint64_t u64;
|
|
|
|
typedef int32_t b32;
|
|
|
|
typedef float f32;
|
|
typedef double f64;
|
|
|
|
#define ArrayCount(Array) (sizeof(Array)/sizeof((Array)[0]))
|
|
|
|
#include "listing_0068_buffer.cpp"
|
|
#include "listing_0074_platform_metrics.cpp"
|
|
#include "listing_0103_repetition_tester.cpp"
|
|
#include "listing_0106_mallocread_overhead_test.cpp"
|
|
|
|
struct test_function
|
|
{
|
|
char const *Name;
|
|
read_overhead_test_func *Func;
|
|
};
|
|
test_function TestFunctions[] =
|
|
{
|
|
{"fread", ReadViaFRead},
|
|
{"_read", ReadViaRead},
|
|
{"ReadFile", ReadViaReadFile},
|
|
};
|
|
|
|
int main(int ArgCount, char **Args)
|
|
{
|
|
// NOTE(casey): Since we do not use these functions in this particular build, we reference their pointers
|
|
// here to prevent the compiler from complaining about "unused functions".
|
|
(void)&IsInBounds;
|
|
(void)&AreEqual;
|
|
|
|
u64 CPUTimerFreq = EstimateCPUTimerFreq();
|
|
|
|
if(ArgCount == 2)
|
|
{
|
|
char *FileName = Args[1];
|
|
#if _WIN32
|
|
struct __stat64 Stat;
|
|
_stat64(FileName, &Stat);
|
|
#else
|
|
struct stat Stat;
|
|
stat(FileName, &Stat);
|
|
#endif
|
|
|
|
read_parameters Params = {};
|
|
Params.Dest = AllocateBuffer(Stat.st_size);
|
|
Params.FileName = FileName;
|
|
|
|
if(Params.Dest.Count > 0)
|
|
{
|
|
repetition_tester Testers[ArrayCount(TestFunctions)][AllocType_Count] = {};
|
|
|
|
for(;;)
|
|
{
|
|
for(u32 FuncIndex = 0; FuncIndex < ArrayCount(TestFunctions); ++FuncIndex)
|
|
{
|
|
for(u32 AllocType = 0; AllocType < AllocType_Count; ++AllocType)
|
|
{
|
|
Params.AllocType = (allocation_type)AllocType;
|
|
|
|
repetition_tester *Tester = &Testers[FuncIndex][AllocType];
|
|
test_function TestFunc = TestFunctions[FuncIndex];
|
|
|
|
printf("\n--- %s%s%s ---\n",
|
|
DescribeAllocationType(Params.AllocType),
|
|
Params.AllocType ? " + " : "",
|
|
TestFunc.Name);
|
|
NewTestWave(Tester, Params.Dest.Count, CPUTimerFreq);
|
|
TestFunc.Func(Tester, &Params);
|
|
}
|
|
}
|
|
}
|
|
|
|
// NOTE(casey): We would normally call this here, but we can't because the compiler will complain about "unreachable code".
|
|
// So instead we just reference the pointer to prevent the compiler complaining about unused function :(
|
|
(void)&FreeBuffer;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "ERROR: Test data size must be non-zero\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "Usage: %s [existing filename]\n", Args[0]);
|
|
}
|
|
|
|
return 0;
|
|
}
|