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Add CPU usage command (#654)

This commit is contained in:
Lior Halphon 2025-06-06 19:26:25 +03:00
parent bed9f8220c
commit f706988171
4 changed files with 51 additions and 0 deletions
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26
Core/debugger.c
View File

@ -1728,6 +1728,31 @@ static bool ticks(GB_gameboy_t *gb, char *arguments, char *modifiers, const debu
return true;
}
static bool usage(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
{
NO_MODIFIERS
if (strlen(lstrip(arguments))) {
print_usage(gb, command);
return true;
}
if (gb->last_frame_busy_cycles || gb->last_frame_idle_cycles) {
GB_log(gb, "CPU usage (last frame): %.2f%%\n", (double)gb->last_frame_busy_cycles / (gb->last_frame_busy_cycles + gb->last_frame_idle_cycles) * 100);
}
else {
GB_log(gb, "CPU usage (last frame): N/A\n");
}
if (gb->last_second_busy_cycles || gb->last_second_idle_cycles) {
GB_log(gb, "CPU usage (last 60 frames): %.2f%%\n", (double)gb->last_second_busy_cycles / (gb->last_second_busy_cycles + gb->last_second_idle_cycles) * 100);
}
else {
GB_log(gb, "CPU usage (last 60 frames): N/A\n");
}
return true;
}
static bool palettes(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
{
@ -2184,6 +2209,7 @@ static const debugger_command_t commands[] = {
{"ticks", 2, ticks, "Display the number of CPU ticks since the last time 'ticks' was "
"used. Use 'keep' as an argument to display ticks without reseeting "
"the count.", "(keep)", .argument_completer = keep_completer},
{"usage", 2, usage, "Display CPU usage"},
{"cartridge", 2, mbc, "Display information about the MBC and cartridge"},
{"mbc", 3, }, /* Alias */
{"apu", 3, apu, "Display information about the current state of the audio processing unit",

15
Core/display.c
View File

@ -176,6 +176,21 @@ void GB_display_vblank(GB_gameboy_t *gb, GB_vblank_type_t type)
gb->cycles_since_vblank_callback = 0;
gb->lcd_disabled_outside_of_vblank = false;
#ifndef GB_DISABLE_DEBUGGER
gb->last_frame_idle_cycles = gb->current_frame_idle_cycles;
gb->last_frame_busy_cycles = gb->current_frame_busy_cycles;
gb->current_frame_idle_cycles = 0;
gb->current_frame_busy_cycles = 0;
if (gb->usage_frame_count++ == 60) {
gb->last_second_idle_cycles = gb->current_second_idle_cycles;
gb->last_second_busy_cycles = gb->current_second_busy_cycles;
gb->current_second_idle_cycles = 0;
gb->current_second_busy_cycles = 0;
gb->usage_frame_count = 0;
}
#endif
/* TODO: Slow in turbo mode! */
if (GB_is_hle_sgb(gb)) {
GB_sgb_render(gb);

8
Core/gb.h
View File

@ -785,6 +785,14 @@ struct GB_gameboy_internal_s {
/* Callbacks */
GB_debugger_reload_callback_t debugger_reload_callback;
/* CPU usage */
uint32_t current_frame_idle_cycles, current_frame_busy_cycles;
uint32_t last_frame_idle_cycles, last_frame_busy_cycles;
uint32_t current_second_idle_cycles, current_second_busy_cycles;
uint32_t last_second_idle_cycles, last_second_busy_cycles;
uint8_t usage_frame_count;
#endif
#ifndef GB_DISABLE_REWIND

2
Core/timing.c
View File

@ -472,6 +472,8 @@ void GB_advance_cycles(GB_gameboy_t *gb, uint8_t cycles)
#ifndef GB_DISABLE_DEBUGGER
gb->absolute_debugger_ticks += cycles;
*((gb->halted || gb->stopped)? &gb->current_frame_idle_cycles : &gb->current_frame_busy_cycles) += cycles;
*((gb->halted || gb->stopped)? &gb->current_second_idle_cycles : &gb->current_second_busy_cycles) += cycles;
#endif
// Not affected by speed boost