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/*
*
* $Id$
*
* libkstartperf.c: LD_PRELOAD library for startup time measurements.
*
* Copyright (C) 2000 Geert Jansen <jansen@kde.org>
*
* Based heavily on kmapnotify.c:
*
* (C) 2000 Rik Hemsley <rik@kde.org>
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Bill Soudan <soudan@kde.org>
*/
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <dlfcn.h>
/* Prototypes */
int XMapWindow(Display *, Window);
int XMapRaised(Display *, Window);
void KDE_InterceptXMapRequest(Display *, Window);
void KDE_ShowPerformance();
/* Globals */
typedef Window (*KDE_XMapRequestSignature)(Display *, Window);
KDE_XMapRequestSignature KDE_RealXMapWindow = 0L;
KDE_XMapRequestSignature KDE_RealXMapRaised = 0L;
/* Functions */
int XMapWindow(Display * d, Window w)
{
if (KDE_RealXMapWindow == 0L)
{
KDE_InterceptXMapRequest(d, w);
KDE_ShowPerformance();
}
return KDE_RealXMapWindow(d, w);
}
int XMapRaised(Display * d, Window w)
{
if (KDE_RealXMapRaised == 0L)
{
KDE_InterceptXMapRequest(d, w);
KDE_ShowPerformance();
}
return KDE_RealXMapRaised(d, w);
}
void KDE_InterceptXMapRequest(Display * d, Window w)
{
void * handle;
handle = dlopen("libX11.so", (RTLD_LAZY | RTLD_GLOBAL));
if (handle == 0L)
handle = dlopen("libX11.so.6", (RTLD_LAZY | RTLD_GLOBAL));
if (handle == 0L)
{
const char * ltdlError = dlerror();
fprintf(stderr, "kstartperf: Could not dlopen libX11: %s\n", ltdlError);
exit(1);
}
KDE_RealXMapWindow = (KDE_XMapRequestSignature)dlsym(handle, "XMapWindow");
if (KDE_RealXMapWindow == 0L)
{
fprintf(stderr, "kstartperf: Could not find symbol XMapWindow in libX11\n");
exit(1);
}
KDE_RealXMapRaised = (KDE_XMapRequestSignature)dlsym(handle, "XMapRaised");
if (KDE_RealXMapRaised == 0L)
{
fprintf(stderr, "kstartperf: Could not find symbol XMapRaised in libX11\n");
exit(1);
}
}
void KDE_ShowPerformance()
{
char *env;
long l1, l2;
float dt;
struct timeval tv;
env = getenv("KSTARTPERF");
if (env == 0L)
{
fprintf(stderr, "kstartperf: $KSTARTPERF not set!\n");
exit(1);
}
if (sscanf(env, "%ld:%ld", &l1, &l2) != 2)
{
fprintf(stderr, "kstartperf: $KSTARTPERF illegal format\n");
exit(1);
}
if (gettimeofday(&tv, 0L) != 0)
{
fprintf(stderr, "kstartperf: gettimeofday() failed.\n");
exit(1);
}
dt = 1e3*(tv.tv_sec - l1) + 1e-3*(tv.tv_usec - l2);
fprintf(stderr, "\nkstartperf: measured startup time at %7.2f ms\n\n", dt);
}
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