[gtkmm] thread priorities are reversed!
- From: nwerneck cefala org
- To: gtkmm-list gnome org
- Subject: [gtkmm] thread priorities are reversed!
- Date: Tue, 20 Apr 2004 10:41:05 -0300
Hello. I created this program where you can start threads with different
priorities. I discovered that what gtkmm this is the low priority beats
the so-called urgent-priority. Somewhere someone is mistaking low
priority values for low priorities!...
Has anybody seen that also? Is that a bug in GTKmm?
I'm sending the program attached. It has to be run as root.
Sorry if I'm getting off-topic.
--
Nicolau Werneck <nwerneck cefala org> 9F99 25AB E47E 8724 2F71
http://cefala.org/~nwerneck EA40 DC23 42CE 6B76 B07F
"The great tragedy of science -- the slaying of a beautiful hypothesis by an ugly fact. "
-- Thomas Huxley
#define __user
//#include <glib.h>
#include <glibmm.h>
#include <libglademm/xml.h>
#include <libglademm.h>
#include <gtkmm.h>
#include <iostream>
#include <sstream>
extern "C" {
#include <stdio.h>
#include <unistd.h>
#include <stddef.h>
#include <stdlib.h>
#include <math.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
} using namespace std;
class Processo : public SigC::Object {
private:
Glib::Dispatcher signal_increment_;
bool BoolAcabar;
public:
Gtk::ProgressBar & Barra;
Gtk::Combo & Com;
Glib::Thread * pThread;
Glib::RefPtr<Gdk::Window> & pWin;
float f;
Processo(Glib::RefPtr<Gdk::Window>cons_pWin, Gtk::ProgressBar & cons_Barra, Gtk::Combo & cons_Com)
: pWin(cons_pWin), Barra(cons_Barra), Com(cons_Com)
{
// Criação da estrutura da thread
Barra.set_fraction(0.0);
signal_increment_.connect(SigC::slot(*this, &Processo::anda_barra));
}
void iniciar() {
Com.set_sensitive(false);
Glib::ustring PrioridadeSelecionada;
Glib::ThreadPriority PrioridadeValor;
Gtk::Entry* pEntry = Com.get_entry();
if(pEntry) PrioridadeSelecionada = pEntry->get_text();
PrioridadeValor = (PrioridadeSelecionada == "URGENTE")?Glib::THREAD_PRIORITY_URGENT: \
((PrioridadeSelecionada == "ALTA")?Glib::THREAD_PRIORITY_HIGH: \
((PrioridadeSelecionada == "NORMAL")?Glib::THREAD_PRIORITY_NORMAL: \
Glib::THREAD_PRIORITY_LOW));
BoolAcabar=false;
// pThread = Glib::Thread::create(SigC::slot(*this, &Processo::funcao), false);
cout << "[" << this << "] iniciar com prioridade " << PrioridadeSelecionada << " (" << PrioridadeValor << ")" << endl;
pThread = Glib::Thread::create(SigC::slot(*this, &Processo::funcao), 0, false, true, PrioridadeValor);
}
void parar() {
cout << "[" << this << "] parar" << endl;
BoolAcabar = true;
}
void anda_barra() {
Barra.set_fraction(f);
}
void funcao () {
Gdk::Rectangle rect;
int x,y,width,height,depth;
float g;
unsigned int i;
for (f = 0; f <= 1.0 && !BoolAcabar; f+=0.005, signal_increment_() )
for (i=0,g=1.5; i<200000 && !BoolAcabar; i++, g*=f*g/(f-g)*sin(g*i) ); // stupid operations to waste time
}
};
class BotaoMestre : public SigC::Object {
protected:
SigC::Connection ConBot;
Gtk::Button & Bot;
Processo & Proc1;
Processo & Proc2;
public:
BotaoMestre(Gtk::Button& cons_Bot, Processo& cons_Proc1, Processo& cons_Proc2) :
Bot(cons_Bot), Proc1(cons_Proc1), Proc2(cons_Proc2)
{
ConBot = Bot.signal_clicked().connect( SigC::slot(*this, &BotaoMestre::ao_apertar_executar) );
}
virtual ~BotaoMestre() {};
void ao_apertar_executar() {
ConBot.disconnect();
Proc1.iniciar();
Proc2.iniciar();
Bot.set_label("gtk-stop");
ConBot = Bot.signal_clicked().connect( SigC::slot(*this, &BotaoMestre::ao_apertar_parar) );
}
void ao_apertar_parar() {
ConBot.disconnect();
Proc1.parar();
Proc2.parar();
Bot.set_label("gtk-execute");
ConBot = Bot.signal_clicked().connect( SigC::slot(*this, &BotaoMestre::ao_apertar_executar) );
}
};
int main(int argc, char **argv)
{
if (!Glib::thread_supported()) {
Glib::thread_init();
} else {
exit(1);
}
Gtk::Main kit(argc, argv);
//Load the Glade file and instiate its widgets:
Glib::RefPtr < Gnome::Glade::Xml > refXml;
try {
refXml = Gnome::Glade::Xml::create("exemplo03.glade");
}
catch(const Gnome::Glade::XmlError & ex) {
std::cerr << ex.what() << std::endl;
return 1;
}
//Get the Glade-instantiated Dialog:
Gtk::Window * pJan = 0;
Gtk::ProgressBar * pBar1 = 0;
Gtk::ProgressBar * pBar2 = 0;
Gtk::Combo * pCom1 = 0;
Gtk::Combo * pCom2 = 0;
Gtk::Button * pBot = 0;
refXml->get_widget("window1", pJan);
refXml->get_widget("progressbar1", pBar1);
refXml->get_widget("progressbar2", pBar2);
refXml->get_widget("combo1", pCom1);
refXml->get_widget("combo2", pCom2);
refXml->get_widget("button1", pBot);
if ( pJan && pBar1 && pBar2 && pCom1 && pCom2 && pBot )
{
Processo Proc1(pJan->get_frame(), *pBar1, *pCom1);
Processo Proc2(pJan->get_frame(), *pBar2, *pCom2);
BotaoMestre BM(*pBot, Proc1, Proc2);
// pBot->signal_clicked().connect( SigC::slot(*this, &DerivedDialog::on_button_quit) );
kit.run(*pJan);
}
return 0;
}
<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd";>
<glade-interface>
<widget class="GtkWindow" id="window1">
<property name="visible">True</property>
<property name="title" translatable="yes">window1</property>
<property name="type">GTK_WINDOW_TOPLEVEL</property>
<property name="window_position">GTK_WIN_POS_NONE</property>
<property name="modal">False</property>
<property name="resizable">True</property>
<property name="destroy_with_parent">False</property>
<child>
<widget class="GtkVBox" id="vbox1">
<property name="border_width">8</property>
<property name="visible">True</property>
<property name="homogeneous">False</property>
<property name="spacing">0</property>
<child>
<widget class="GtkFrame" id="frame1">
<property name="border_width">8</property>
<property name="visible">True</property>
<property name="label_xalign">0</property>
<property name="label_yalign">0.5</property>
<property name="shadow_type">GTK_SHADOW_ETCHED_IN</property>
<child>
<widget class="GtkVBox" id="vbox2">
<property name="border_width">15</property>
<property name="visible">True</property>
<property name="homogeneous">True</property>
<property name="spacing">0</property>
<child>
<widget class="GtkProgressBar" id="progressbar1">
<property name="visible">True</property>
<property name="orientation">GTK_PROGRESS_LEFT_TO_RIGHT</property>
<property name="fraction">0</property>
<property name="pulse_step">0.1</property>
<property name="text" translatable="yes">PROCESSO 1</property>
</widget>
<packing>
<property name="padding">5</property>
<property name="expand">True</property>
<property name="fill">False</property>
</packing>
</child>
<child>
<widget class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="homogeneous">False</property>
<property name="spacing">0</property>
<child>
<widget class="GtkLabel" id="label3">
<property name="visible">True</property>
<property name="label" translatable="yes">Prioridade: </property>
<property name="use_underline">False</property>
<property name="use_markup">False</property>
<property name="justify">GTK_JUSTIFY_LEFT</property>
<property name="wrap">False</property>
<property name="selectable">False</property>
<property name="xalign">0.5</property>
<property name="yalign">0.5</property>
<property name="xpad">0</property>
<property name="ypad">0</property>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">False</property>
<property name="fill">False</property>
</packing>
</child>
<child>
<widget class="GtkCombo" id="combo2">
<property name="visible">True</property>
<property name="value_in_list">False</property>
<property name="allow_empty">True</property>
<property name="case_sensitive">False</property>
<property name="enable_arrow_keys">True</property>
<property name="enable_arrows_always">False</property>
<child internal-child="entry">
<widget class="GtkEntry" id="combo-entry2">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="editable">False</property>
<property name="visibility">True</property>
<property name="max_length">0</property>
<property name="text" translatable="yes"></property>
<property name="has_frame">True</property>
<property name="invisible_char" translatable="yes">*</property>
<property name="activates_default">False</property>
</widget>
</child>
<child internal-child="list">
<widget class="GtkList" id="combo-list2">
<property name="visible">True</property>
<property name="selection_mode">GTK_SELECTION_BROWSE</property>
<child>
<widget class="GtkListItem" id="listitem119">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">URGENTE</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem120">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">NORMAL</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem121">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">ALTA</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem122">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">BAIXA</property>
</widget>
</child>
</widget>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">True</property>
<property name="fill">True</property>
</packing>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">False</property>
<property name="fill">True</property>
</packing>
</child>
</widget>
</child>
<child>
<widget class="GtkLabel" id="label1">
<property name="visible">True</property>
<property name="label" translatable="yes">Thread 1</property>
<property name="use_underline">False</property>
<property name="use_markup">False</property>
<property name="justify">GTK_JUSTIFY_LEFT</property>
<property name="wrap">False</property>
<property name="selectable">False</property>
<property name="xalign">0.5</property>
<property name="yalign">0.5</property>
<property name="xpad">0</property>
<property name="ypad">0</property>
</widget>
<packing>
<property name="type">label_item</property>
</packing>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">True</property>
<property name="fill">True</property>
</packing>
</child>
<child>
<widget class="GtkFrame" id="frame2">
<property name="border_width">8</property>
<property name="visible">True</property>
<property name="label_xalign">0</property>
<property name="label_yalign">0.5</property>
<property name="shadow_type">GTK_SHADOW_ETCHED_IN</property>
<child>
<widget class="GtkVBox" id="vbox3">
<property name="border_width">15</property>
<property name="visible">True</property>
<property name="homogeneous">True</property>
<property name="spacing">0</property>
<child>
<widget class="GtkProgressBar" id="progressbar2">
<property name="visible">True</property>
<property name="orientation">GTK_PROGRESS_LEFT_TO_RIGHT</property>
<property name="fraction">0</property>
<property name="pulse_step">0</property>
<property name="text" translatable="yes">PROCESSO 2</property>
</widget>
<packing>
<property name="padding">5</property>
<property name="expand">True</property>
<property name="fill">False</property>
</packing>
</child>
<child>
<widget class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<property name="homogeneous">False</property>
<property name="spacing">0</property>
<child>
<widget class="GtkLabel" id="label4">
<property name="visible">True</property>
<property name="label" translatable="yes">Prioridade: </property>
<property name="use_underline">False</property>
<property name="use_markup">False</property>
<property name="justify">GTK_JUSTIFY_LEFT</property>
<property name="wrap">False</property>
<property name="selectable">False</property>
<property name="xalign">0.5</property>
<property name="yalign">0.5</property>
<property name="xpad">0</property>
<property name="ypad">0</property>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">False</property>
<property name="fill">False</property>
</packing>
</child>
<child>
<widget class="GtkCombo" id="combo1">
<property name="visible">True</property>
<property name="value_in_list">False</property>
<property name="allow_empty">True</property>
<property name="case_sensitive">False</property>
<property name="enable_arrow_keys">True</property>
<property name="enable_arrows_always">False</property>
<child internal-child="entry">
<widget class="GtkEntry" id="combo-entry1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="editable">False</property>
<property name="visibility">True</property>
<property name="max_length">0</property>
<property name="text" translatable="yes"></property>
<property name="has_frame">True</property>
<property name="invisible_char" translatable="yes">*</property>
<property name="activates_default">False</property>
</widget>
</child>
<child internal-child="list">
<widget class="GtkList" id="combo-list1">
<property name="visible">True</property>
<property name="selection_mode">GTK_SELECTION_BROWSE</property>
<child>
<widget class="GtkListItem" id="listitem115">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">URGENTE</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem116">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">NORMAL</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem117">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">ALTA</property>
</widget>
</child>
<child>
<widget class="GtkListItem" id="listitem118">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label" translatable="yes">BAIXA</property>
</widget>
</child>
</widget>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">True</property>
<property name="fill">True</property>
</packing>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">False</property>
<property name="fill">True</property>
</packing>
</child>
</widget>
</child>
<child>
<widget class="GtkLabel" id="label2">
<property name="visible">True</property>
<property name="label" translatable="yes">Thread 2</property>
<property name="use_underline">False</property>
<property name="use_markup">False</property>
<property name="justify">GTK_JUSTIFY_LEFT</property>
<property name="wrap">False</property>
<property name="selectable">False</property>
<property name="xalign">0.5</property>
<property name="yalign">0.5</property>
<property name="xpad">0</property>
<property name="ypad">0</property>
</widget>
<packing>
<property name="type">label_item</property>
</packing>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">True</property>
<property name="fill">True</property>
</packing>
</child>
<child>
<widget class="GtkHBox" id="hbox3">
<property name="visible">True</property>
<property name="homogeneous">False</property>
<property name="spacing">0</property>
<child>
<widget class="GtkButton" id="button1">
<property name="width_request">88</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="label">gtk-execute</property>
<property name="use_stock">True</property>
<property name="relief">GTK_RELIEF_NORMAL</property>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">True</property>
<property name="fill">False</property>
</packing>
</child>
</widget>
<packing>
<property name="padding">0</property>
<property name="expand">False</property>
<property name="fill">False</property>
</packing>
</child>
</widget>
</child>
</widget>
</glade-interface>
packages=gtkmm-2.0 libglademm-2.0 glibmm-2.0 gthread-2.0
exemplo03: exemplo03.cc exemplo03.glade
g++ -o exemplo03 exemplo03.cc `pkg-config --cflags --libs $(packages)`
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