Made sure that curl_global_init is called in all the multithreaded

example programs.

docs/examples/threaded-ssl.c

@@ -23,6 +23,8 @@
 #include <pthread.h>
 #include <curl/curl.h>
 
+#define NUMT 4
+
 /* we have this global to let the callback get easy access to it */
 static pthread_mutex_t *lockarray;
 
@@ -89,7 +91,7 @@ void init_locks(void)
 #endif
 
 /* List of URLs to fetch.*/
-const char *urls[]= {
+const char * const urls[]= {
   "https://www.sf.net/",
   "https://www.openssl.org/",
   "https://www.sf.net/",
@@ -114,15 +116,18 @@ static void *pull_one_url(void *url)
 
 int main(int argc, char **argv)
 {
-  pthread_t tid[4];
+  pthread_t tid[NUMT];
   int i;
   int error;
   (void)argc; /* we don't use any arguments in this example */
   (void)argv;
 
+  /* Must initialize libcurl before any threads are started */
+  curl_global_init(CURL_GLOBAL_ALL);
+
   init_locks();
 
-  for(i=0; i< 4; i++) {
+  for(i=0; i< NUMT; i++) {
     error = pthread_create(&tid[i],
                            NULL, /* default attributes please */
                            pull_one_url,
@@ -134,7 +139,7 @@ int main(int argc, char **argv)
   }
 
   /* now wait for all threads to terminate */
-  for(i=0; i< 4; i++) {
+  for(i=0; i< NUMT; i++) {
     error = pthread_join(tid[i], NULL);
     fprintf(stderr, "Thread %d terminated\n", i);
   }