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dc_log_warning(context, 0, "There is already another ongoing process running.");
return 0;
}
context->ongoing_running = 1;
context->shall_stop_ongoing = 0;
return 1;
}
/*
* Frees the process allocated with dc_alloc_ongoing() - independingly of dc_shall_stop_ongoing.
* If dc_alloc_ongoing() fails, this function MUST NOT be called.
*/
void dc_free_ongoing(dc_context_t* context)
{
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC) {
return;
}
context->ongoing_running = 0;
context->shall_stop_ongoing = 1; /* avoids dc_stop_ongoing_process() to stop the thread */
}
/**
* Signal an ongoing process to stop.
*
* After that, dc_stop_ongoing_process() returns _without_ waiting
* for the ongoing process to return.
*
* The ongoing process will return ASAP then, however, it may
* still take a moment. If in doubt, the caller may also decide to kill the
* thread after a few seconds; eg. the process may hang in a
* function not under the control of the core (eg. #DC_EVENT_HTTP_GET). Another
* reason for dc_stop_ongoing_process() not to wait is that otherwise it
* would be GUI-blocking and should be started in another thread then; this
* would make things even more complicated.
*
* Typical ongoing processes are started by dc_configure(),
* dc_initiate_key_transfer() or dc_imex(). As there is always at most only
* one onging process at the same time, there is no need to define _which_ process to exit.
*
* @memberof dc_context_t
* @param context The context object.
* @return None.
*/
void dc_stop_ongoing_process(dc_context_t* context)
{
if (context==NULL || context->magic!=DC_CONTEXT_MAGIC) {
return;
}
if (context->ongoing_running && context->shall_stop_ongoing==0)
{
dc_log_info(context, 0, "Signaling the ongoing process to stop ASAP.");
context->shall_stop_ongoing = 1;
}
else
{
dc_log_info(context, 0, "No ongoing process to stop.");
}
}
```
Filename: dc_context.c
```c
#include <sys/stat.h>
#include <sys/types.h>
#include <locale.h>
#include <unistd.h>
#include <openssl/opensslv.h>
#include <assert.h>
#include "dc_context.h"
#include "dc_imap.h"
#include "dc_smtp.h"
#include "dc_openssl.h"
#include "dc_mimefactory.h"
#include "dc_tools.h"
#include "dc_job.h"
#include "dc_key.h"
#include "dc_pgp.h"
#include "dc_apeerstate.h"
static const char* config_keys[] = {
"addr"
,"mail_server"
,"mail_user"
,"mail_pw"
,"mail_port"
,"send_server"
,"send_user"
,"send_pw"
,"send_port"
,"server_flags"
,"imap_folder" // deprecated
,"displayname"