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