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LibC: Move Stopwatch thingy into a <serenity.h> header.

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This thing is extremely useful for performance testing so let's put it here.
This commit is contained in:
Andreas Kling 2019-01-28 23:01:47 +01:00
parent cc906a2897
commit ad53f6afd3
2 changed files with 34 additions and 28 deletions
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34
LibC/serenity.h Normal file
View file

@ -0,0 +1,34 @@
#pragma once
#include <stdio.h>
#include <unistd.h>
#ifdef __cplusplus
struct Stopwatch {
public:
Stopwatch(const char* name)
: m_name(name)
{
read_tsc(&m_start_lsw, &m_start_msw);
}
~Stopwatch()
{
unsigned end_lsw;
unsigned end_msw;
read_tsc(&end_lsw, &end_msw);
if (m_start_msw != end_msw) {
dbgprintf("Stopwatch: differing msw, no result for %s\n", m_name);
}
unsigned diff = end_lsw - m_start_lsw;
dbgprintf("Stopwatch(%s): %u ticks\n", m_name, diff);
}
private:
const char* m_name { nullptr };
unsigned m_start_lsw { 0 };
unsigned m_start_msw { 0 };
};
#endif // __cplusplus

28
Terminal/Terminal.cpp
View file

@ -10,33 +10,6 @@
//#define TERMINAL_DEBUG
struct Stopwatch {
public:
Stopwatch(const char* name)
: m_name(name)
{
read_tsc(&m_start_lsw, &m_start_msw);
}
~Stopwatch()
{
dword end_lsw;
dword end_msw;
read_tsc(&end_lsw, &end_msw);
if (m_start_msw != end_msw) {
dbgprintf("stopwatch: differing msw, no result for %s\n", m_name);
}
dword diff = end_lsw - m_start_lsw;
dbgprintf("Stopwatch(%s): %u ticks\n", m_name, diff);
}
private:
const char* m_name { nullptr };
dword m_start_lsw { 0 };
dword m_start_msw { 0 };
};
void Terminal::create_window()
{
m_pixel_width = m_columns * font().glyph_width() + m_inset * 2;
@ -598,7 +571,6 @@ bool Terminal::Line::has_only_one_background_color() const
void Terminal::paint()
{
Stopwatch sw("Terminal::paint");
Rect rect { 0, 0, m_pixel_width, m_pixel_height };
Painter painter(*m_backing);