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platform/linux: implement debug timers and cl_maxframetime to catch very long frames on debugger

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mittorn 2023-12-24 07:46:09 +03:00 committed by Alibek Omarov
parent a488f79852
commit b4a7c266b5
4 changed files with 58 additions and 0 deletions
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4
engine/client/cl_main.c
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@ -87,6 +87,7 @@ static CVAR_DEFINE_AUTO( model, "", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABL
static CVAR_DEFINE_AUTO( topcolor, "0", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABLE, "player top color" );
static CVAR_DEFINE_AUTO( bottomcolor, "0", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABLE, "player bottom color" );
CVAR_DEFINE_AUTO( rate, "3500", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABLE, "player network rate" );
static CVAR_DEFINE_AUTO( cl_maxframetime, "0", 0, "set deadline timer for client rendering to catch freezes" );
client_t cl;
client_static_t cls;
@ -2917,6 +2918,7 @@ void CL_InitLocal( void )
Cvar_RegisterVariable( &cl_showevents );
Cvar_Get( "lastdemo", "", FCVAR_ARCHIVE, "last played demo" );
Cvar_RegisterVariable( &ui_renderworld );
Cvar_RegisterVariable( &cl_maxframetime );
// these two added to shut up CS 1.5 about 'unknown' commands
Cvar_Get( "lightgamma", "1", FCVAR_ARCHIVE, "ambient lighting level (legacy, unused)" );
@ -3057,6 +3059,8 @@ void Host_ClientFrame( void )
{
// if client is not active, do nothing
if( !cls.initialized ) return;
if( cls.key_dest == key_game && cls.state == ca_active && !Con_Visible() )
Platform_SetTimer( cl_maxframetime.value );
// if running the server remotely, send intentions now after
// the incoming messages have been read

1
engine/client/cl_view.c
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@ -549,5 +549,6 @@ void V_PostRender( void )
SCR_MakeScreenShot();
ref.dllFuncs.R_AllowFog( true );
Platform_SetTimer( 0.0f );
ref.dllFuncs.R_EndFrame();
}

45
engine/platform/linux/sys_linux.c
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@ -17,6 +17,10 @@ GNU General Public License for more details.
#include <stdlib.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <signal.h>
#include <ucontext.h>
#include <time.h>
#include <unistd.h>
#include "platform/platform.h"
static void *g_hsystemd;
@ -103,3 +107,44 @@ void Linux_Shutdown( void )
g_hsystemd = NULL;
}
}
static void Linux_TimerHandler( int sig, siginfo_t *si, void *uc )
{
timer_t *tidp = si->si_value.sival_ptr;
int overrun = timer_getoverrun( *tidp );
Con_Printf( "Frame too long (overrun %d)!\n", overrun );
}
#define DEBUG_TIMER_SIGNAL SIGRTMIN
void Linux_SetTimer( float tm )
{
static timer_t timerid;
if( !timerid && tm )
{
struct sigevent sev = { 0 };
struct sigaction sa = { 0 };
sa.sa_flags = SA_SIGINFO;
sa.sa_sigaction = Linux_TimerHandler;
sigaction( DEBUG_TIMER_SIGNAL, &sa, NULL );
// this path availiable in POSIX, but may signal wrong thread...
// sev.sigev_notify = SIGEV_SIGNAL;
sev.sigev_notify = SIGEV_THREAD_ID;
sev._sigev_un._tid = gettid();
sev.sigev_signo = DEBUG_TIMER_SIGNAL;
sev.sigev_value.sival_ptr = &timerid;
timer_create( CLOCK_REALTIME, &sev, &timerid );
}
if( timerid )
{
struct itimerspec its = {0};
its.it_value.tv_sec = tm;
its.it_value.tv_nsec = 1000000000ULL * fmod( tm, 1.0f );
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
timer_settime( timerid, 0, &its, NULL );
}
}

8
engine/platform/platform.h
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@ -91,6 +91,7 @@ void DOS_Shutdown( void );
#if XASH_LINUX
void Linux_Init( void );
void Linux_Shutdown( void );
void Linux_SetTimer( float time );
#endif
static inline void Platform_Init( void )
@ -181,6 +182,13 @@ void Platform_SetClipboardText( const char *buffer );
#define SDL_VERSION_ATLEAST( x, y, z ) 0
#endif
static void Platform_SetTimer( float time )
{
#if XASH_LINUX
Linux_SetTimer( time );
#endif
}
/*
==============================================================================