/*
This file is part of GNUnet.
- (C) 2011, 2012 Christian Grothoff
+ Copyright (C) 2011, 2012 Christian Grothoff
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* NULL-terminated list of command-line arguments.
*/
char **binary_argv;
-
+
/**
* Task to read from the helper.
*/
- GNUNET_SCHEDULER_TaskIdentifier read_task;
+ struct GNUNET_SCHEDULER_Task *read_task;
/**
* Task to read from the helper.
*/
- GNUNET_SCHEDULER_TaskIdentifier write_task;
+ struct GNUNET_SCHEDULER_Task *write_task;
/**
* Restart task.
*/
- GNUNET_SCHEDULER_TaskIdentifier restart_task;
+ struct GNUNET_SCHEDULER_Task *restart_task;
/**
* Does the helper support the use of a control pipe for signalling?
*/
int with_control_pipe;
+ /**
+ * Count start attempts to increase linear back off
+ */
+ unsigned int retry_back_off;
};
sh->cont (sh->cont_cls, GNUNET_NO);
GNUNET_free (sh);
}
- if (GNUNET_SCHEDULER_NO_TASK != h->restart_task)
+ if (NULL != h->restart_task)
{
GNUNET_SCHEDULER_cancel (h->restart_task);
- h->restart_task = GNUNET_SCHEDULER_NO_TASK;
+ h->restart_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->read_task)
+ if (NULL != h->read_task)
{
GNUNET_SCHEDULER_cancel (h->read_task);
- h->read_task = GNUNET_SCHEDULER_NO_TASK;
+ h->read_task = NULL;
}
if (NULL == h->helper_proc)
return GNUNET_SYSERR;
GNUNET_OS_process_destroy (h->helper_proc);
h->helper_proc = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->read_task)
+ if (NULL != h->read_task)
{
GNUNET_SCHEDULER_cancel (h->read_task);
- h->read_task = GNUNET_SCHEDULER_NO_TASK;
+ h->read_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->write_task)
+ if (NULL != h->write_task)
{
GNUNET_SCHEDULER_cancel (h->write_task);
- h->write_task = GNUNET_SCHEDULER_NO_TASK;
+ h->write_task = NULL;
}
if (NULL != h->helper_in)
{
stop_helper (struct GNUNET_HELPER_Handle *h,
int soft_kill)
{
- if (GNUNET_SCHEDULER_NO_TASK != h->restart_task)
+ if (NULL != h->restart_task)
{
GNUNET_SCHEDULER_cancel (h->restart_task);
- h->restart_task = GNUNET_SCHEDULER_NO_TASK;
+ h->restart_task = NULL;
}
else
{
* Restart the helper process.
*
* @param cls handle to the helper process
- * @param tc scheduler context
*/
static void
-restart_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+restart_task (void *cls);
/**
* Read from the helper-process
*
* @param cls handle to the helper process
- * @param tc scheduler context
*/
static void
-helper_read (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+helper_read (void *cls)
{
struct GNUNET_HELPER_Handle *h = cls;
char buf[GNUNET_SERVER_MAX_MESSAGE_SIZE] GNUNET_ALIGN;
ssize_t t;
- h->read_task = GNUNET_SCHEDULER_NO_TASK;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- {
- /* try again */
- h->read_task = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
- h->fh_from_helper, &helper_read, h);
- return;
- }
+ h->read_task = NULL;
t = GNUNET_DISK_file_read (h->fh_from_helper, &buf, sizeof (buf));
if (t < 0)
{
}
stop_helper (h, GNUNET_NO);
/* Restart the helper */
- h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS, &restart_task, h);
+ h->restart_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
+ &restart_task, h);
return;
}
if (0 == t)
}
stop_helper (h, GNUNET_NO);
/* Restart the helper */
- h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &restart_task, h);
+ h->restart_task
+ = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
+ &restart_task, h);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
(unsigned int) t,
h->binary_name);
h->read_task = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
- h->fh_from_helper, &helper_read, h);
+ h->fh_from_helper,
+ &helper_read, h);
if (GNUNET_SYSERR ==
- GNUNET_SERVER_mst_receive (h->mst, NULL, buf, t, GNUNET_NO, GNUNET_NO))
+ GNUNET_SERVER_mst_receive (h->mst,
+ NULL,
+ buf, t,
+ GNUNET_NO, GNUNET_NO))
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Failed to parse inbound message from helper `%s'\n"),
}
stop_helper (h, GNUNET_NO);
/* Restart the helper */
- h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &restart_task, h);
+ h->restart_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
+ &restart_task, h);
return;
}
}
/* out of file descriptors? try again later... */
stop_helper (h, GNUNET_NO);
h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
&restart_task, h);
return;
}
{
/* failed to start process? try again later... */
stop_helper (h, GNUNET_NO);
- h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &restart_task, h);
+ h->restart_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
+ &restart_task, h);
return;
}
GNUNET_DISK_pipe_close_end (h->helper_out, GNUNET_DISK_PIPE_END_WRITE);
* Restart the helper process.
*
* @param cls handle to the helper process
- * @param tc scheduler context
*/
static void
-restart_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+restart_task (void *cls)
{
struct GNUNET_HELPER_Handle*h = cls;
- h->restart_task = GNUNET_SCHEDULER_NO_TASK;
+ h->restart_task = NULL;
+ h->retry_back_off++;
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Restarting helper with back-off %u\n",
+ h->retry_back_off);
start_helper (h);
}
if (NULL != strstr (binary_name, "gnunet"))
h->binary_name = GNUNET_OS_get_libexec_binary_path (binary_name);
else
- h->binary_name = strdup (binary_name);
+ h->binary_name = GNUNET_strdup (binary_name);
for (c = 0; NULL != binary_argv[c]; c++);
h->binary_argv = GNUNET_malloc (sizeof (char *) * (c + 1));
for (c = 0; NULL != binary_argv[c]; c++)
if (NULL != cb)
h->mst = GNUNET_SERVER_mst_create (cb, h->cb_cls);
h->exp_cb = exp_cb;
+ h->retry_back_off = 0;
start_helper (h);
return h;
}
unsigned int c;
struct GNUNET_HELPER_SendHandle *sh;
- if (GNUNET_SCHEDULER_NO_TASK != h->write_task)
+ if (NULL != h->write_task)
{
GNUNET_SCHEDULER_cancel (h->write_task);
- h->write_task = GNUNET_SCHEDULER_NO_TASK;
+ h->write_task = NULL;
}
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == h->read_task);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == h->restart_task);
+ GNUNET_assert (NULL == h->read_task);
+ GNUNET_assert (NULL == h->restart_task);
while (NULL != (sh = h->sh_head))
{
GNUNET_CONTAINER_DLL_remove (h->sh_head,
* Write to the helper-process
*
* @param cls handle to the helper process
- * @param tc scheduler context
*/
static void
-helper_write (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+helper_write (void *cls)
{
struct GNUNET_HELPER_Handle *h = cls;
struct GNUNET_HELPER_SendHandle *sh;
const char *buf;
ssize_t t;
- h->write_task = GNUNET_SCHEDULER_NO_TASK;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- {
- /* try again */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Helper write triggered during shutdown, retrying\n");
- h->write_task = GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
- h->fh_to_helper, &helper_write, h);
- return;
- }
+ h->write_task = NULL;
if (NULL == (sh = h->sh_head))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Stopping and restarting helper task!\n");
stop_helper (h, GNUNET_NO);
/* Restart the helper */
- h->restart_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &restart_task, h);
+ h->restart_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ h->retry_back_off),
+ &restart_task, h);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
mlen = ntohs (msg->size);
sh = GNUNET_malloc (sizeof (struct GNUNET_HELPER_SendHandle) + mlen);
sh->msg = (const struct GNUNET_MessageHeader*) &sh[1];
- memcpy (&sh[1], msg, mlen);
+ GNUNET_memcpy (&sh[1], msg, mlen);
sh->h = h;
sh->cont = cont;
sh->cont_cls = cont_cls;
GNUNET_CONTAINER_DLL_insert_tail (h->sh_head,
h->sh_tail,
sh);
- if (GNUNET_SCHEDULER_NO_TASK == h->write_task)
+ if (NULL == h->write_task)
h->write_task = GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
h->fh_to_helper,
&helper_write,
if (NULL == h->sh_head)
{
GNUNET_SCHEDULER_cancel (h->write_task);
- h->write_task = GNUNET_SCHEDULER_NO_TASK;
+ h->write_task = NULL;
}
}
}
projects / oweals / gnunet.git / blobdiff