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tools: fix an issue acrnd does not notify the vm stop state to cbc lifecycle service

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This patch resolves acrnd does not notify vm stop state(suspend/shutdown) to
cbc_lifecycle after SOS enters suspend/shutdown, that causes cbc_lifecycle
cannot trigger SOS suspend/shutdown flow.

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Reviewed-by: Like Yan <like.yan@intel.com>
This commit is contained in:
Yuan Liu 2018-07-25 20:47:49 +08:00 committed by lijinxia
parent 331300d8b9
commit 6cd6e3d3cc
1 changed files with 89 additions and 6 deletions
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95
tools/acrn-manager/acrnd.c
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@ -37,6 +37,8 @@ struct acrnd_work {
static LIST_HEAD(acrnd_work_list, acrnd_work) work_head;
static pthread_mutex_t work_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t acrnd_stop_mutex = PTHREAD_MUTEX_INITIALIZER;
static unsigned int acrnd_stop_timeout;
/* acrnd_add_work(), add a worker function.
* @func, the worker function.
* @sec, when add a @func(), after @sec seconds @func() will be called.
@ -412,7 +414,7 @@ static int check_vms_status(unsigned int status)
return 0;
}
static int _handle_acrnd_stop(unsigned int timeout)
static int wait_for_stop(unsigned int timeout)
{
unsigned long t = timeout;
@ -421,7 +423,11 @@ static int _handle_acrnd_stop(unsigned int timeout)
/* list and update the vm status */
do {
if (check_vms_status(VM_CREATED) == 0)
return 0;
return SHUTDOWN;
if (check_vms_status(VM_PAUSED) == 0)
return SUSPEND;
sleep(1);
}
while (t--);
@ -429,18 +435,95 @@ static int _handle_acrnd_stop(unsigned int timeout)
return -1;
}
static void* notify_stop_state(void *arg)
{
int lcs_fd;
int rc;
struct mngr_msg req;
req.magic = MNGR_MSG_MAGIC;
rc = wait_for_stop(acrnd_stop_timeout);
if (rc < 0) {
fprintf(stderr, "cannot get VMs stop state\n");
req.msgid = SUSPEND;
req.data.err = -1;
} else {
req.msgid = rc;
req.data.err = 0;
}
store_timer_list();
lcs_fd = mngr_open_un(SOS_LCS_SOCK, MNGR_CLIENT);
if (lcs_fd < 0) {
fprintf(stderr, "cannot open sos-lcs.socket\n");
goto exit;
}
mngr_send_msg(lcs_fd, &req, NULL, 0);
mngr_close(lcs_fd);
exit:
pthread_mutex_unlock(&acrnd_stop_mutex);
return NULL;
}
static void _handle_acrnd_stop(unsigned int timeout)
{
int rc;
pthread_t tid;
pthread_attr_t attr;
/*
* Only one acrnd stop thread at a time
* if failed to lock the acrnd_stop_mutex, then return directly
* if creating thread success, then unlock in the thread exit
* if failed to create thread, then unlock immediately.
*/
if (pthread_mutex_trylock(&acrnd_stop_mutex) == 0) {
acrnd_stop_timeout = timeout;
/*
* Due to acrnd only has one main thread, and acrnd stop flow
* probably blocks main thread, so a detached thread is created
* to avoid this.
*/
rc = pthread_attr_init(&attr);
if (rc < 0)
goto fail_init;
rc = pthread_attr_setdetachstate(&attr,
PTHREAD_CREATE_DETACHED);
if (rc < 0)
goto fail;
rc = pthread_create(&tid, &attr, notify_stop_state, NULL);
if (rc < 0)
goto fail;
pthread_attr_destroy(&attr);
}
return;
fail:
pthread_attr_destroy(&attr);
fail_init:
pthread_mutex_unlock(&acrnd_stop_mutex);
fprintf(stderr, "Failed to invoke handle_acrnd_stop \n");
}
static void handle_acrnd_stop(struct mngr_msg *msg, int client_fd, void *param)
{
struct mngr_msg ack;
ack.msgid = msg->msgid;
ack.timestamp = msg->timestamp;
ack.data.err = _handle_acrnd_stop(msg->data.acrnd_stop.timeout);
store_timer_list();
ack.data.err = 0;
if (client_fd > 0)
mngr_send_msg(client_fd, &ack, NULL, 0);
_handle_acrnd_stop(msg->data.acrnd_stop.timeout);
}
void handle_acrnd_resume(struct mngr_msg *msg, int client_fd, void *param)