1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22/* This is a multi threaded application that uses a progress bar to show 23 * status. It uses Gtk+ to make a smooth pulse. 24 * 25 * Written by Jud Bishop after studying the other examples provided with 26 * libcurl. 27 * 28 * To compile (on a single line): 29 * gcc -ggdb `pkg-config --cflags --libs gtk+-2.0` -lcurl -lssl -lcrypto 30 * -lgthread-2.0 -dl smooth-gtk-thread.c -o smooth-gtk-thread 31 */ 32 33#include <stdio.h> 34#include <gtk/gtk.h> 35#include <glib.h> 36#include <unistd.h> 37#include <pthread.h> 38 39#include <curl/curl.h> 40#include <curl/types.h> /* new for v7 */ 41#include <curl/easy.h> /* new for v7 */ 42 43#define NUMT 4 44 45pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; 46int j = 0; 47gint num_urls = 9; /* Just make sure this is less than urls[]*/ 48const char * const urls[]= { 49 "90022", 50 "90023", 51 "90024", 52 "90025", 53 "90026", 54 "90027", 55 "90028", 56 "90029", 57 "90030" 58}; 59 60size_t write_file(void *ptr, size_t size, size_t nmemb, FILE *stream) 61{ 62 /* printf("write_file\n"); */ 63 return fwrite(ptr, size, nmemb, stream); 64} 65 66/* http://xoap.weather.com/weather/local/46214?cc=*&dayf=5&unit=i */ 67void *pull_one_url(void *NaN) 68{ 69 CURL *curl; 70 CURLcode res; 71 gchar *http; 72 FILE *outfile; 73 74 /* Stop threads from entering unless j is incremented */ 75 pthread_mutex_lock(&lock); 76 while ( j < num_urls ) 77 { 78 printf("j = %d\n", j); 79 80 http = 81 g_strdup_printf("xoap.weather.com/weather/local/%s?cc=*&dayf=5&unit=i\n", 82 urls[j]); 83 84 printf( "http %s", http ); 85 86 curl = curl_easy_init(); 87 if(curl) 88 { 89 90 outfile = fopen(urls[j], "w"); 91 /* printf("fopen\n"); */ 92 93 /* Set the URL and transfer type */ 94 curl_easy_setopt(curl, CURLOPT_URL, http); 95 96 /* Write to the file */ 97 curl_easy_setopt(curl, CURLOPT_WRITEDATA, outfile); 98 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_file); 99 100 j++; /* critical line */ 101 pthread_mutex_unlock(&lock); 102 103 res = curl_easy_perform(curl); 104 105 fclose(outfile); 106 printf("fclose\n"); 107 108 curl_easy_cleanup(curl); 109 } 110 g_free (http); 111 112 /* Adds more latency, testing the mutex.*/ 113 sleep(1); 114 115 } /* end while */ 116 return NULL; 117} 118 119 120gboolean pulse_bar(gpointer data) 121{ 122 gdk_threads_enter(); 123 gtk_progress_bar_pulse (GTK_PROGRESS_BAR (data)); 124 gdk_threads_leave(); 125 126 /* Return true so the function will be called again; 127 * returning false removes this timeout function. 128 */ 129 return TRUE; 130} 131 132void *create_thread(void *progress_bar) 133{ 134 pthread_t tid[NUMT]; 135 int i; 136 int error; 137 138 /* Make sure I don't create more threads than urls. */ 139 for(i=0; i < NUMT && i < num_urls ; i++) { 140 error = pthread_create(&tid[i], 141 NULL, /* default attributes please */ 142 pull_one_url, 143 NULL); 144 if(0 != error) 145 fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error); 146 else 147 fprintf(stderr, "Thread %d, gets %s\n", i, urls[i]); 148 } 149 150 /* Wait for all threads to terminate. */ 151 for(i=0; i < NUMT && i < num_urls; i++) { 152 error = pthread_join(tid[i], NULL); 153 fprintf(stderr, "Thread %d terminated\n", i); 154 } 155 156 /* This stops the pulsing if you have it turned on in the progress bar 157 section */ 158 g_source_remove(GPOINTER_TO_INT(g_object_get_data(G_OBJECT(progress_bar), 159 "pulse_id"))); 160 161 /* This destroys the progress bar */ 162 gtk_widget_destroy(progress_bar); 163 164 /* [Un]Comment this out to kill the program rather than pushing close. */ 165 /* gtk_main_quit(); */ 166 167 168 return NULL; 169 170} 171 172static gboolean cb_delete(GtkWidget *window, gpointer data) 173{ 174 gtk_main_quit(); 175 return FALSE; 176} 177 178int main(int argc, char **argv) 179{ 180 GtkWidget *top_window, *outside_frame, *inside_frame, *progress_bar; 181 182 /* Must initialize libcurl before any threads are started */ 183 curl_global_init(CURL_GLOBAL_ALL); 184 185 /* Init thread */ 186 g_thread_init(NULL); 187 gdk_threads_init (); 188 gdk_threads_enter (); 189 190 gtk_init(&argc, &argv); 191 192 /* Base window */ 193 top_window = gtk_window_new(GTK_WINDOW_TOPLEVEL); 194 195 /* Frame */ 196 outside_frame = gtk_frame_new(NULL); 197 gtk_frame_set_shadow_type(GTK_FRAME(outside_frame), GTK_SHADOW_OUT); 198 gtk_container_add(GTK_CONTAINER(top_window), outside_frame); 199 200 /* Frame */ 201 inside_frame = gtk_frame_new(NULL); 202 gtk_frame_set_shadow_type(GTK_FRAME(inside_frame), GTK_SHADOW_IN); 203 gtk_container_set_border_width(GTK_CONTAINER(inside_frame), 5); 204 gtk_container_add(GTK_CONTAINER(outside_frame), inside_frame); 205 206 /* Progress bar */ 207 progress_bar = gtk_progress_bar_new(); 208 gtk_progress_bar_pulse (GTK_PROGRESS_BAR (progress_bar)); 209 /* Make uniform pulsing */ 210 gint pulse_ref = g_timeout_add (300, pulse_bar, progress_bar); 211 g_object_set_data(G_OBJECT(progress_bar), "pulse_id", 212 GINT_TO_POINTER(pulse_ref)); 213 gtk_container_add(GTK_CONTAINER(inside_frame), progress_bar); 214 215 gtk_widget_show_all(top_window); 216 printf("gtk_widget_show_all\n"); 217 218 g_signal_connect(G_OBJECT (top_window), "delete-event", 219 G_CALLBACK(cb_delete), NULL); 220 221 if (!g_thread_create(&create_thread, progress_bar, FALSE, NULL) != 0) 222 g_warning("can't create the thread"); 223 224 gtk_main(); 225 gdk_threads_leave(); 226 printf("gdk_threads_leave\n"); 227 228 return 0; 229} 230 231