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Top Forums Programming pthread question : global variable not updated Post 302609957 by pflynn on Tuesday 20th of March 2012 03:59:46 PM
Old 03-20-2012
You can visualize what Corona688 said by "forcing" a context switch: if you put the main thread to sleep "for enough time" just after the new thread creation:

PHP Code:
int main()
{
   
pthread_t tid1tid2;
    
int t;
 
    
display();
    
pthread_create(&tid1,NULL,process,&t);
    
sleep(1); /* give some time so the new created thread will have a chance to run before main thread calls display function */
    
display();
   return 
0;
 
  } 
 

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curl_global_cleanup(3)						  libcurl Manual					    curl_global_cleanup(3)

NAME
curl_global_cleanup - global libcurl cleanup SYNOPSIS
#include <curl/curl.h> void curl_global_cleanup(void); DESCRIPTION
This function releases resources acquired by curl_global_init(3). You should call curl_global_cleanup(3) once for each call you make to curl_global_init(3), after you are done using libcurl. This function is not thread safe. You must not call it when any other thread in the program (i.e. a thread sharing the same memory) is run- ning. This doesn't just mean no other thread that is using libcurl. Because curl_global_cleanup(3) calls functions of other libraries that are similarly thread unsafe, it could conflict with any other thread that uses these other libraries. See the description in libcurl(3) of global environment requirements for details of how to use this function. CAUTION
curl_global_cleanup(3) does not block waiting for any libcurl-created threads to terminate (such as threads used for name resolving). If a module containing libcurl is dynamically unloaded while libcurl-created threads are still running then your program may crash or other cor- ruption may occur. We recommend you do not run libcurl from any module that may be unloaded dynamically. This behavior may be addressed in the future. SEE ALSO
curl_global_init(3), libcurl(3), libcurl-thread(3), libcurl 7.54.0 September 20, 2016 curl_global_cleanup(3)
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