-/* Copyright (c) 2004-2013. The SimGrid Team.
+/* Copyright (c) 2004-2014. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
#include "xbt/log.h"
/** @addtogroup m_task_management
- *
- *
+ *
+ *
* Since most scheduling algorithms rely on a concept of task
* that can be either <em>computed</em> locally or
* <em>transferred</em> on another processor, it seems to be the
*/
msg_error_t MSG_task_destroy(msg_task_t task)
{
- smx_action_t action = NULL;
+ smx_synchro_t action = NULL;
xbt_assert((task != NULL), "Invalid parameter");
if (task->simdata->isused) {
simcall_host_execution_cancel(task->simdata->compute);
}
else if (task->simdata->comm) {
- simcall_comm_cancel(task->simdata->comm);
- task->simdata->isused = 0;
+ simdata_task_t simdata = task->simdata;
+ simcall_comm_cancel(simdata->comm);
+ if (msg_global->debug_multiple_use && simdata->isused!=0)
+ xbt_ex_free(*(xbt_ex_t*)simdata->isused);
+ simdata->isused = 0;
}
return MSG_OK;
}
* \brief set the amount data attached with a task #msg_task_t.
*
* \warning If the transfer is ongoing (already started and not finished),
- * it is not modified by this call.
+ * it is not modified by this call.
*/
void MSG_task_set_data_size(msg_task_t task,
/** \ingroup m_task_management
- * \brief Changes the priority of a computation task. This priority doesn't affect
+ * \brief Changes the priority of a computation task. This priority doesn't affect
* the transfer rate. A priority of 2 will make a task receive two times more
* cpu power than the other ones.
*
*
* \param task a target task
* \param host the host having a multi-core CPU
- * \param mask the value specifying the CPU affinity setting of the task
+ * \param mask the bit mask of a new CPU affinity setting for the task
+ *
+ *
+ * Usage:
+ * 0. Define a host with multiple cores.
+ * \<host id="PM0" power="1E8" core="2"/\>
+ *
+ * 1. Pin a given task to the first CPU core of a host.
+ * MSG_task_set_affinity(task, pm0, 0x01);
+ *
+ * 2. Pin a given task to the third CPU core of a host. Turn on the third bit of the mask.
+ * MSG_task_set_affinity(task, pm0, 0x04); // 0x04 == 100B
+ *
+ * 3. Pin a given VM to the first CPU core of a host.
+ * MSG_vm_set_affinity(vm, pm0, 0x01);
+ *
+ * See examples/msg/cloud/multicore.c for more information.
*
*
* Note:
if (mask == 0) {
/* 0 means clear */
- xbt_dict_remove_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host));
+ {
+ /* We need remove_ext() not throwing exception. */
+ void *ret = xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t));
+ if (ret != NULL)
+ xbt_dict_remove_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host));
+ }
} else
xbt_dict_set_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host), (void *) mask, NULL);
}
{
- smx_action_t compute = task->simdata->compute;
+ smx_synchro_t compute = task->simdata->compute;
msg_host_t host_now = compute->execution.host; // simix_private.h is necessary
if (host_now != host) {
/* task is not yet executed on this host */
/* task is being executed on this host. so change the affinity now */
{
/* check it works. remove me if it works. */
- unsigned long affinity_mask = (unsigned long) xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t));
- xbt_assert(affinity_mask == mask);
+ xbt_assert((unsigned long) xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t)) == mask);
}
XBT_INFO("set affinity(0x%04lx@%s) for %s", mask, MSG_host_get_name(host), MSG_task_get_name(task));