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|
/*
* Copyright 2013 Samsung Electronics Co., Ltd
*
* Licensed under the Flora License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://floralicense.org/license/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <string.h> /* strerror */
#include <errno.h> /* errno */
#include <unistd.h> /* pid_t */
#include <stdlib.h> /* free */
#include <pthread.h>
#include <malloc.h>
#include <sys/time.h>
#include <Eina.h>
#include <Ecore.h>
#include <aul.h> /* aul_launch_app */
#include <dlog.h>
#include <bundle.h>
#include <packet.h>
#include <livebox-errno.h>
#include "slave_life.h"
#include "slave_rpc.h"
#include "client_life.h"
#include "fault_manager.h"
#include "debug.h"
#include "conf.h"
#include "setting.h"
#include "util.h"
#include "abi.h"
#include "xmonitor.h"
int errno;
struct slave_node {
char *name;
char *abi;
char *pkgname;
int secured; /* Only A package(livebox) is loaded for security requirements */
int refcnt;
int fault_count;
int critical_fault_count;
enum slave_state state;
int network;
int loaded_instance;
int loaded_package;
int reactivate_instances;
int reactivate_slave;
pid_t pid;
Eina_List *event_activate_list;
Eina_List *event_deactivate_list;
Eina_List *event_delete_list;
Eina_List *event_fault_list;
Eina_List *event_pause_list;
Eina_List *event_resume_list;
Eina_List *data_list;
Ecore_Timer *ttl_timer; /* Time to live */
Ecore_Timer *activate_timer; /* Waiting hello packet for this time */
struct timeval activated_at;
};
struct event {
struct slave_node *slave;
int (*evt_cb)(struct slave_node *, void *);
void *cbdata;
};
struct priv_data {
char *tag;
void *data;
};
static struct {
Eina_List *slave_list;
} s_info = {
.slave_list = NULL,
};
static Eina_Bool slave_ttl_cb(void *data)
{
struct slave_node *slave = (struct slave_node *)data;
/*!
* \note
* ttl_timer must has to be set to NULL before deactivate the slave
* It will be used for making decision of the expired TTL timer or the fault of a livebox.
*/
slave->ttl_timer = NULL;
slave_set_reactivation(slave, 0);
slave_set_reactivate_instances(slave, 1);
slave = slave_deactivate(slave);
DbgPrint("Slave is deactivated(%p)\n", slave);
/*! To recover all instances state it is activated again */
return ECORE_CALLBACK_CANCEL;
}
static inline int xmonitor_pause_cb(void *data)
{
slave_pause(data);
return LB_STATUS_SUCCESS;
}
static inline int xmonitor_resume_cb(void *data)
{
slave_resume(data);
return LB_STATUS_SUCCESS;
}
static inline struct slave_node *create_slave_node(const char *name, int is_secured, const char *abi, const char *pkgname, int network)
{
struct slave_node *slave;
slave = calloc(1, sizeof(*slave));
if (!slave) {
ErrPrint("Heap: %s\n", strerror(errno));
return NULL;
}
slave->name = strdup(name);
if (!slave->name) {
ErrPrint("Heap: %s\n", strerror(errno));
DbgFree(slave);
return NULL;
}
slave->abi = strdup(abi);
if (!slave->abi) {
ErrPrint("Heap: %s\n", strerror(errno));
DbgFree(slave->name);
DbgFree(slave);
return NULL;
}
slave->pkgname = strdup(pkgname);
if (!slave->pkgname) {
ErrPrint("Heap: %s\n", strerror(errno));
DbgFree(slave->abi);
DbgFree(slave->name);
DbgFree(slave);
return NULL;
}
slave->secured = is_secured;
slave->pid = (pid_t)-1;
slave->state = SLAVE_TERMINATED;
slave->network = network;
xmonitor_add_event_callback(XMONITOR_PAUSED, xmonitor_pause_cb, slave);
xmonitor_add_event_callback(XMONITOR_RESUMED, xmonitor_resume_cb, slave);
s_info.slave_list = eina_list_append(s_info.slave_list, slave);
DbgPrint("slave data is created %p\n", slave);
return slave;
}
static inline void invoke_delete_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
EINA_LIST_FOREACH_SAFE(slave->event_delete_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_delete_list, event)) {
slave->event_delete_list = eina_list_remove(slave->event_delete_list, event);
DbgFree(event);
}
}
}
}
static inline void destroy_slave_node(struct slave_node *slave)
{
struct event *event;
struct priv_data *priv;
if (slave->pid != (pid_t)-1) {
ErrPrint("Slave is not deactivated\n");
return;
}
DbgPrint("Slave data is destroyed %p\n", slave);
xmonitor_del_event_callback(XMONITOR_PAUSED, xmonitor_pause_cb, slave);
xmonitor_del_event_callback(XMONITOR_RESUMED, xmonitor_resume_cb, slave);
invoke_delete_cb(slave);
slave_rpc_fini(slave); /*!< Finalize the RPC after handling all delete callbacks */
EINA_LIST_FREE(slave->event_delete_list, event) {
DbgFree(event);
}
EINA_LIST_FREE(slave->event_activate_list, event) {
DbgFree(event);
}
EINA_LIST_FREE(slave->event_deactivate_list, event) {
DbgFree(event);
}
EINA_LIST_FREE(slave->event_fault_list, event) {
DbgFree(event);
}
EINA_LIST_FREE(slave->data_list, priv) {
DbgFree(priv->tag);
DbgFree(priv);
}
s_info.slave_list = eina_list_remove(s_info.slave_list, slave);
if (slave->ttl_timer)
ecore_timer_del(slave->ttl_timer);
if (slave->activate_timer)
ecore_timer_del(slave->activate_timer);
DbgFree(slave->abi);
DbgFree(slave->name);
DbgFree(slave->pkgname);
DbgFree(slave);
return;
}
static inline struct slave_node *find_slave(const char *name)
{
struct slave_node *slave;
Eina_List *l;
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (!strcmp(slave->name, name))
return slave;
}
return NULL;
}
HAPI int slave_expired_ttl(struct slave_node *slave)
{
if (!slave)
return 0;
if (!slave->secured)
return 0;
return !!slave->ttl_timer;
}
HAPI struct slave_node *slave_ref(struct slave_node *slave)
{
if (!slave)
return NULL;
slave->refcnt++;
return slave;
}
HAPI struct slave_node *slave_unref(struct slave_node *slave)
{
if (!slave)
return NULL;
if (slave->refcnt == 0) {
ErrPrint("Slave refcnt is not valid\n");
return NULL;
}
slave->refcnt--;
if (slave->refcnt == 0) {
destroy_slave_node(slave);
slave = NULL;
}
return slave;
}
HAPI const int const slave_refcnt(struct slave_node *slave)
{
return slave->refcnt;
}
HAPI struct slave_node *slave_create(const char *name, int is_secured, const char *abi, const char *pkgname, int network)
{
struct slave_node *slave;
slave = find_slave(name);
if (slave) {
if (slave->secured != is_secured)
ErrPrint("Exists slave and creating slave's security flag is not matched\n");
return slave;
}
slave = create_slave_node(name, is_secured, abi, pkgname, network);
if (!slave)
return NULL;
slave_ref(slave);
slave_rpc_init(slave);
return slave;
}
/*!
* \note
* Before destroying slave object,
* you should check the RPC(slave_async_XXX) state and Private data field (slave_set_data)
*/
HAPI void slave_destroy(struct slave_node *slave)
{
slave_unref(slave);
}
static inline void invoke_fault_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
EINA_LIST_FOREACH_SAFE(slave->event_fault_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_fault_list, event)) {
slave->event_fault_list = eina_list_remove(slave->event_fault_list, event);
DbgFree(event);
}
}
}
}
static inline void invoke_activate_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
EINA_LIST_FOREACH_SAFE(slave->event_activate_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_activate_list, event)) {
slave->event_activate_list = eina_list_remove(slave->event_activate_list, event);
DbgFree(event);
}
}
}
}
static Eina_Bool activate_timer_cb(void *data)
{
struct slave_node *slave = data;
slave->fault_count++;
invoke_fault_cb(slave);
slave_set_reactivation(slave, 0);
slave_set_reactivate_instances(slave, 0);
slave->activate_timer = NULL;
if (slave->pid > 0) {
int ret;
DbgPrint("Try to terminate PID: %d\n", slave->pid);
ret = aul_terminate_pid(slave->pid);
if (ret < 0)
ErrPrint("Terminate failed, pid %d\n", slave->pid);
}
slave = slave_deactivated(slave);
ErrPrint("Slave is not activated in %lf sec (slave: %p)\n", SLAVE_ACTIVATE_TIME, slave);
return ECORE_CALLBACK_CANCEL;
}
HAPI int slave_activate(struct slave_node *slave)
{
/*!
* \note
* This check code can replace the slave->state check code
* If the slave data has the PID, it means, it is activated
* Even if it is in the termiating sequence, it will have the PID
* before terminated at last.
* So we can use this simple code for checking the slave's last state.
* about it is alive? or not.
*/
if (slave->pid != (pid_t)-1)
return LB_STATUS_ERROR_ALREADY;
if (DEBUG_MODE) {
DbgPrint("Debug Mode enabled. name[%s] secured[%d] abi[%s]\n", slave->name, slave->secured, slave->abi);
} else {
bundle *param;
param = bundle_create();
if (!param) {
ErrPrint("Failed to create a bundle\n");
return LB_STATUS_ERROR_FAULT;
}
bundle_add(param, BUNDLE_SLAVE_NAME, slave->name);
bundle_add(param, BUNDLE_SLAVE_SECURED, slave->secured ? "true" : "false");
bundle_add(param, BUNDLE_SLAVE_ABI, slave->abi);
DbgPrint("Launch the slave package: %s\n", slave->pkgname);
slave->pid = (pid_t)aul_launch_app(slave->pkgname, param);
bundle_free(param);
if (slave->pid < 0) {
ErrPrint("Failed to launch a new slave %s (%d)\n", slave->name, slave->pid);
slave->pid = (pid_t)-1;
return LB_STATUS_ERROR_FAULT;
}
DbgPrint("Slave launched %d for %s\n", slave->pid, slave->name);
slave->activate_timer = ecore_timer_add(SLAVE_ACTIVATE_TIME, activate_timer_cb, slave);
if (!slave->activate_timer)
ErrPrint("Failed to register an activate timer\n");
}
slave->state = SLAVE_REQUEST_TO_LAUNCH;
/*!
* \note
* Increase the refcnt of a slave,
* To prevent from making an orphan(slave).
*/
slave_ref(slave);
return LB_STATUS_SUCCESS;
}
HAPI int slave_give_more_ttl(struct slave_node *slave)
{
double delay;
if (!slave->secured || !slave->ttl_timer)
return LB_STATUS_ERROR_INVALID;
delay = SLAVE_TTL - ecore_timer_pending_get(slave->ttl_timer);
ecore_timer_delay(slave->ttl_timer, delay);
return LB_STATUS_SUCCESS;
}
HAPI int slave_freeze_ttl(struct slave_node *slave)
{
if (!slave->secured || !slave->ttl_timer)
return LB_STATUS_ERROR_INVALID;
ecore_timer_freeze(slave->ttl_timer);
return LB_STATUS_SUCCESS;
}
HAPI int slave_thaw_ttl(struct slave_node *slave)
{
double delay;
if (!slave->secured || !slave->ttl_timer)
return LB_STATUS_ERROR_INVALID;
ecore_timer_thaw(slave->ttl_timer);
delay = SLAVE_TTL - ecore_timer_pending_get(slave->ttl_timer);
ecore_timer_delay(slave->ttl_timer, delay);
return LB_STATUS_SUCCESS;
}
HAPI int slave_activated(struct slave_node *slave)
{
slave->state = SLAVE_RESUMED;
if (xmonitor_is_paused())
slave_pause(slave);
if (slave->secured == 1) {
DbgPrint("Slave deactivation timer is added (%s - %lf)\n", slave->name, SLAVE_TTL);
slave->ttl_timer = ecore_timer_add(SLAVE_TTL, slave_ttl_cb, slave);
if (!slave->ttl_timer)
ErrPrint("Failed to create a TTL timer\n");
}
invoke_activate_cb(slave);
slave_set_reactivation(slave, 0);
slave_set_reactivate_instances(slave, 0);
if (gettimeofday(&slave->activated_at, NULL) < 0) {
ErrPrint("Failed to get time of day: %s\n", strerror(errno));
slave->activated_at.tv_sec = 0;
slave->activated_at.tv_usec = 0;
}
if (slave->activate_timer) {
ecore_timer_del(slave->activate_timer);
slave->activate_timer = NULL;
}
return LB_STATUS_SUCCESS;
}
static inline int invoke_deactivate_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
int reactivate = 0;
EINA_LIST_FOREACH_SAFE(slave->event_deactivate_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_deactivate_list, event)) {
slave->event_deactivate_list = eina_list_remove(slave->event_deactivate_list, event);
DbgFree(event);
}
} else if (ret == SLAVE_NEED_TO_REACTIVATE) {
reactivate++;
}
}
return reactivate;
}
HAPI struct slave_node *slave_deactivate(struct slave_node *slave)
{
int ret;
if (!slave_is_activated(slave)) {
ErrPrint("Slave is already deactivated\n");
if (slave_loaded_instance(slave) == 0) {
/*!
* \note
* If a slave has no more instances,
* Destroy it
*/
slave = slave_unref(slave);
}
return slave;
}
DbgPrint("Deactivate a slave: %d\n", slave->pid);
/*!
* \todo
* check the return value of the aul_terminate_pid
*/
slave->state = SLAVE_REQUEST_TO_TERMINATE;
DbgPrint("Terminate PID: %d\n", slave->pid);
if (slave->pid > 0) {
ret = aul_terminate_pid(slave->pid);
if (ret < 0) {
ErrPrint("Terminate failed. pid %d (%d)\n", slave->pid, ret);
slave = slave_deactivated(slave);
}
}
return slave;
}
HAPI struct slave_node *slave_deactivated(struct slave_node *slave)
{
int reactivate;
slave->pid = (pid_t)-1;
slave->state = SLAVE_TERMINATED;
if (slave->ttl_timer) {
ecore_timer_del(slave->ttl_timer);
slave->ttl_timer = NULL;
}
if (slave->activate_timer) {
ecore_timer_del(slave->activate_timer);
slave->activate_timer = NULL;
}
reactivate = invoke_deactivate_cb(slave);
slave = slave_unref(slave);
if (!slave) {
DbgPrint("SLAVE object is destroyed\n");
return slave;
}
if (reactivate && slave_need_to_reactivate(slave)) {
int ret;
DbgPrint("Need to reactivate a slave\n");
ret = slave_activate(slave);
if (ret < 0 && ret != LB_STATUS_ERROR_ALREADY)
ErrPrint("Failed to reactivate a slave\n");
} else if (slave_loaded_instance(slave) == 0) {
/*!
* \note
* If a slave has no more instances,
* Destroy it
*/
slave = slave_unref(slave);
}
return slave;
}
HAPI struct slave_node *slave_deactivated_by_fault(struct slave_node *slave)
{
int ret;
struct timeval faulted_at;
int reactivate = 1;
int reactivate_instances = 1;
if (!slave_is_activated(slave)) {
DbgPrint("Deactivating in progress\n");
if (slave_loaded_instance(slave) == 0)
slave = slave_unref(slave);
return slave;
}
slave->fault_count++;
(void)fault_check_pkgs(slave);
if (slave->pid > 0) {
DbgPrint("Try to terminate PID: %d\n", slave->pid);
ret = aul_terminate_pid(slave->pid);
if (ret < 0) {
ErrPrint("Terminate failed, pid %d\n", slave->pid);
}
}
if (gettimeofday(&faulted_at, NULL) == 0) {
struct timeval rtv;
timersub(&faulted_at, &slave->activated_at, &rtv);
if (rtv.tv_sec < MINIMUM_REACTIVATION_TIME) {
slave->critical_fault_count++;
if (!slave_loaded_instance(slave) || slave->critical_fault_count >= SLAVE_MAX_LOAD) {
ErrPrint("Reactivation time is too fast and frequently occurred - Stop to auto reactivation\n");
reactivate = 0;
reactivate_instances = 0;
slave->critical_fault_count = 0;
/*!
* \note
* Fault callback can access the slave information.
*/
invoke_fault_cb(slave);
}
} else {
slave->critical_fault_count = 0;
}
} else {
ErrPrint("Failed to get time of day: %s\n", strerror(errno));
}
slave_set_reactivation(slave, reactivate);
slave_set_reactivate_instances(slave, reactivate_instances);
slave = slave_deactivated(slave);
return slave;
}
HAPI const int const slave_is_activated(struct slave_node *slave)
{
switch (slave->state) {
case SLAVE_REQUEST_TO_TERMINATE:
case SLAVE_TERMINATED:
return 0;
case SLAVE_REQUEST_TO_LAUNCH:
/* Not yet launched. but the slave incurred an unexpected error */
case SLAVE_REQUEST_TO_PAUSE:
case SLAVE_REQUEST_TO_RESUME:
case SLAVE_PAUSED:
case SLAVE_RESUMED:
return 1;
default:
return slave->pid != (pid_t)-1;
}
/* Could not be reach to here */
return 0;
}
HAPI int slave_event_callback_add(struct slave_node *slave, enum slave_event event, int (*cb)(struct slave_node *, void *), void *data)
{
struct event *ev;
ev = calloc(1, sizeof(*ev));
if (!ev) {
ErrPrint("Heap: %s\n", strerror(errno));
return LB_STATUS_ERROR_MEMORY;
}
ev->slave = slave;
ev->cbdata = data;
ev->evt_cb = cb;
/*!
* \note
* Use the eina_list_prepend API.
* To keep the sequence of a callback invocation.
*
* Here is an example sequence.
*
* slave_event_callback_add(CALLBACK_01);
* slave_event_callback_add(CALLBACK_02);
* slave_event_callback_add(CALLBACK_03);
*
* Then the invoke_event_callback function will call the CALLBACKS as below sequence
*
* invoke_CALLBACK_03
* invoke_CALLBACK_02
* invoke_CALLBACK_01
*/
switch (event) {
case SLAVE_EVENT_ACTIVATE:
slave->event_activate_list = eina_list_prepend(slave->event_activate_list, ev);
break;
case SLAVE_EVENT_DELETE:
slave->event_delete_list = eina_list_prepend(slave->event_delete_list, ev);
break;
case SLAVE_EVENT_DEACTIVATE:
slave->event_deactivate_list = eina_list_prepend(slave->event_deactivate_list, ev);
break;
case SLAVE_EVENT_PAUSE:
slave->event_pause_list = eina_list_prepend(slave->event_pause_list, ev);
break;
case SLAVE_EVENT_RESUME:
slave->event_resume_list = eina_list_prepend(slave->event_resume_list, ev);
break;
case SLAVE_EVENT_FAULT:
slave->event_fault_list = eina_list_prepend(slave->event_fault_list, ev);
break;
default:
DbgFree(ev);
return LB_STATUS_ERROR_INVALID;
}
return LB_STATUS_SUCCESS;
}
HAPI int slave_event_callback_del(struct slave_node *slave, enum slave_event event, int (*cb)(struct slave_node *, void *), void *data)
{
struct event *ev;
Eina_List *l;
Eina_List *n;
switch (event) {
case SLAVE_EVENT_DEACTIVATE:
EINA_LIST_FOREACH_SAFE(slave->event_deactivate_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_deactivate_list = eina_list_remove(slave->event_deactivate_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
case SLAVE_EVENT_DELETE:
EINA_LIST_FOREACH_SAFE(slave->event_delete_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_delete_list = eina_list_remove(slave->event_delete_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
case SLAVE_EVENT_ACTIVATE:
EINA_LIST_FOREACH_SAFE(slave->event_activate_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_activate_list = eina_list_remove(slave->event_activate_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
case SLAVE_EVENT_PAUSE:
EINA_LIST_FOREACH_SAFE(slave->event_pause_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_pause_list = eina_list_remove(slave->event_pause_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
case SLAVE_EVENT_RESUME:
EINA_LIST_FOREACH_SAFE(slave->event_resume_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_resume_list = eina_list_remove(slave->event_resume_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
case SLAVE_EVENT_FAULT:
EINA_LIST_FOREACH_SAFE(slave->event_fault_list, l, n, ev) {
if (ev->evt_cb == cb && ev->cbdata == data) {
slave->event_fault_list = eina_list_remove(slave->event_fault_list, ev);
DbgFree(ev);
return LB_STATUS_SUCCESS;
}
}
break;
default:
return LB_STATUS_ERROR_INVALID;
}
return LB_STATUS_ERROR_NOT_EXIST;
}
HAPI int slave_set_data(struct slave_node *slave, const char *tag, void *data)
{
struct priv_data *priv;
priv = calloc(1, sizeof(*priv));
if (!priv) {
ErrPrint("Heap: %s\n", strerror(errno));
return LB_STATUS_ERROR_MEMORY;
}
priv->tag = strdup(tag);
if (!priv->tag) {
ErrPrint("Heap: %s\n", strerror(errno));
DbgFree(priv);
return LB_STATUS_ERROR_MEMORY;
}
priv->data = data;
slave->data_list = eina_list_append(slave->data_list, priv);
return LB_STATUS_SUCCESS;
}
HAPI void *slave_del_data(struct slave_node *slave, const char *tag)
{
struct priv_data *priv;
void *data;
Eina_List *l;
Eina_List *n;
EINA_LIST_FOREACH_SAFE(slave->data_list, l, n, priv) {
if (!strcmp(priv->tag, tag)) {
slave->data_list = eina_list_remove(slave->data_list, priv);
data = priv->data;
DbgFree(priv->tag);
DbgFree(priv);
return data;
}
}
return NULL;
}
HAPI void *slave_data(struct slave_node *slave, const char *tag)
{
struct priv_data *priv;
Eina_List *l;
EINA_LIST_FOREACH(slave->data_list, l, priv) {
if (!strcmp(priv->tag, tag))
return priv->data;
}
return NULL;
}
HAPI struct slave_node *slave_find_by_pid(pid_t pid)
{
Eina_List *l;
struct slave_node *slave;
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (slave->pid == pid)
return slave;
}
return NULL;
}
HAPI struct slave_node *slave_find_by_name(const char *name)
{
Eina_List *l;
struct slave_node *slave;
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (!strcmp(slave->name, name))
return slave;
}
return NULL;
}
HAPI struct slave_node *slave_find_available(const char *abi, int secured, int network)
{
Eina_List *l;
struct slave_node *slave;
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (slave->secured != secured)
continue;
if (slave->state == SLAVE_REQUEST_TO_TERMINATE && slave->loaded_instance == 0) {
/*!
* \note
* If a slave is in request_to_terminate state,
* and the slave object has no more intances,
* the slave object will be deleted soon.
* so we cannot reuse it.
*
* This object is not usable.
*/
continue;
}
if (strcasecmp(slave->abi, abi))
continue;
if (slave->secured) {
DbgPrint("Found secured slave - has no instances (%s)\n", slave_name(slave));
if (slave->loaded_package == 0)
return slave;
} else if (slave->network == network) {
DbgPrint("slave[%s] %d (net: %d)\n", slave_name(slave), slave->loaded_package, slave->network);
if (!strcasecmp(abi, DEFAULT_ABI)) {
if (slave->loaded_package < SLAVE_MAX_LOAD)
return slave;
} else {
return slave;
}
}
}
return NULL;
}
HAPI struct slave_node *slave_find_by_pkgname(const char *pkgname)
{
Eina_List *l;
struct slave_node *slave;
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (!strcmp(slave->pkgname, pkgname)) {
if (slave->pid == (pid_t)-1) {
return slave;
}
}
}
return NULL;
}
HAPI struct slave_node *slave_find_by_rpc_handle(int handle)
{
Eina_List *l;
struct slave_node *slave;
if (handle <= 0) {
ErrPrint("Invalid RPC handle: %d\n", handle);
return NULL;
}
EINA_LIST_FOREACH(s_info.slave_list, l, slave) {
if (slave_rpc_handle(slave) == handle)
return slave;
}
/* Not found */
return NULL;
}
HAPI void slave_load_package(struct slave_node *slave)
{
slave->loaded_package++;
}
HAPI void slave_unload_package(struct slave_node *slave)
{
if (!slave || slave->loaded_package == 0) {
ErrPrint("Slave loaded package is not correct\n");
return;
}
slave->loaded_package--;
}
HAPI void slave_load_instance(struct slave_node *slave)
{
slave->loaded_instance++;
DbgPrint("Instance: (%d)%d\n", slave->pid, slave->loaded_instance);
}
HAPI int const slave_loaded_instance(struct slave_node *slave)
{
return slave->loaded_instance;
}
HAPI int const slave_loaded_package(struct slave_node *slave)
{
return slave->loaded_package;
}
HAPI struct slave_node *slave_unload_instance(struct slave_node *slave)
{
if (!slave || slave->loaded_instance == 0) {
ErrPrint("Slave loaded instance is not correct\n");
return slave;
}
slave->loaded_instance--;
DbgPrint("Instance: (%d)%d\n", slave->pid, slave->loaded_instance);
if (slave->loaded_instance == 0 && slave_is_activated(slave)) {
slave_set_reactivation(slave, 0);
slave_set_reactivate_instances(slave, 0);
slave = slave_deactivate(slave);
}
return slave;
}
HAPI const int const slave_is_secured(const struct slave_node *slave)
{
return slave->secured;
}
HAPI const char * const slave_name(const struct slave_node *slave)
{
return slave->name;
}
HAPI const char * const slave_abi(const struct slave_node *slave)
{
return slave->abi;
}
HAPI const pid_t const slave_pid(const struct slave_node *slave)
{
return slave->pid;
}
HAPI int slave_set_pid(struct slave_node *slave, pid_t pid)
{
if (!slave)
return LB_STATUS_ERROR_INVALID;
DbgPrint("Slave PID is updated to %d from %d\n", pid, slave->pid);
slave->pid = pid;
return LB_STATUS_SUCCESS;
}
static inline void invoke_resumed_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
EINA_LIST_FOREACH_SAFE(slave->event_resume_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_resume_list, event)) {
slave->event_resume_list = eina_list_remove(slave->event_resume_list, event);
DbgFree(event);
}
}
}
}
static void resume_cb(struct slave_node *slave, const struct packet *packet, void *data)
{
int ret;
if (slave->state == SLAVE_REQUEST_TO_TERMINATE) {
DbgPrint("Slave is terminating now. ignore resume result\n");
return;
}
if (!packet) {
ErrPrint("Failed to change the state of the slave\n");
slave->state = SLAVE_PAUSED;
return;
}
if (packet_get(packet, "i", &ret) != 1) {
ErrPrint("Invalid parameter\n");
return;
}
if (ret == 0) {
slave->state = SLAVE_RESUMED;
slave_rpc_ping_thaw(slave);
invoke_resumed_cb(slave);
}
}
static inline void invoke_paused_cb(struct slave_node *slave)
{
Eina_List *l;
Eina_List *n;
struct event *event;
int ret;
EINA_LIST_FOREACH_SAFE(slave->event_pause_list, l, n, event) {
ret = event->evt_cb(event->slave, event->cbdata);
if (ret < 0) {
if (eina_list_data_find(slave->event_pause_list, event)) {
slave->event_pause_list = eina_list_remove(slave->event_pause_list, event);
DbgFree(event);
}
}
}
}
static void pause_cb(struct slave_node *slave, const struct packet *packet, void *data)
{
int ret;
if (slave->state == SLAVE_REQUEST_TO_TERMINATE) {
DbgPrint("Slave is terminating now. ignore pause result\n");
return;
}
if (!packet) {
ErrPrint("Failed to change the state of the slave\n");
slave->state = SLAVE_RESUMED;
return;
}
if (packet_get(packet, "i", &ret) != 1) {
ErrPrint("Invalid parameter\n");
return;
}
if (ret == 0) {
slave->state = SLAVE_PAUSED;
slave_rpc_ping_freeze(slave);
invoke_paused_cb(slave);
}
}
HAPI int slave_resume(struct slave_node *slave)
{
double timestamp;
struct packet *packet;
switch (slave->state) {
case SLAVE_REQUEST_TO_LAUNCH:
case SLAVE_REQUEST_TO_TERMINATE:
case SLAVE_TERMINATED:
return LB_STATUS_ERROR_INVALID;
case SLAVE_RESUMED:
case SLAVE_REQUEST_TO_RESUME:
return LB_STATUS_SUCCESS;
default:
break;
}
timestamp = util_timestamp();
packet = packet_create("resume", "d", timestamp);
if (!packet) {
ErrPrint("Failed to prepare param\n");
return LB_STATUS_ERROR_FAULT;
}
slave->state = SLAVE_REQUEST_TO_RESUME;
return slave_rpc_async_request(slave, NULL, packet, resume_cb, NULL, 0);
}
HAPI int slave_pause(struct slave_node *slave)
{
double timestamp;
struct packet *packet;
switch (slave->state) {
case SLAVE_REQUEST_TO_LAUNCH:
case SLAVE_REQUEST_TO_TERMINATE:
case SLAVE_TERMINATED:
return LB_STATUS_ERROR_INVALID;
case SLAVE_PAUSED:
case SLAVE_REQUEST_TO_PAUSE:
return LB_STATUS_SUCCESS;
default:
break;
}
timestamp = util_timestamp();
packet = packet_create("pause", "d", timestamp);
if (!packet) {
ErrPrint("Failed to prepare param\n");
return LB_STATUS_ERROR_FAULT;
}
slave->state = SLAVE_REQUEST_TO_PAUSE;
return slave_rpc_async_request(slave, NULL, packet, pause_cb, NULL, 0);
}
HAPI const char *slave_pkgname(const struct slave_node *slave)
{
return slave ? slave->pkgname : NULL;
}
HAPI enum slave_state slave_state(const struct slave_node *slave)
{
return slave ? slave->state : SLAVE_ERROR;
}
HAPI const char *slave_state_string(const struct slave_node *slave)
{
switch (slave->state) {
case SLAVE_REQUEST_TO_LAUNCH:
return "RequestToLaunch";
case SLAVE_REQUEST_TO_TERMINATE:
return "RequestToTerminate";
case SLAVE_TERMINATED:
return "Terminated";
case SLAVE_REQUEST_TO_PAUSE:
return "RequestToPause";
case SLAVE_REQUEST_TO_RESUME:
return "RequestToResume";
case SLAVE_PAUSED:
return "Paused";
case SLAVE_RESUMED:
return "Resumed";
case SLAVE_ERROR:
return "Error";
default:
break;
}
return "Unknown";
}
HAPI const void *slave_list(void)
{
return s_info.slave_list;
}
HAPI int const slave_fault_count(const struct slave_node *slave)
{
return slave->fault_count;
}
HAPI double const slave_ttl(const struct slave_node *slave)
{
if (!slave->ttl_timer)
return 0.0f;
return ecore_timer_pending_get(slave->ttl_timer);
}
HAPI void slave_set_reactivate_instances(struct slave_node *slave, int reactivate)
{
slave->reactivate_instances = reactivate;
}
HAPI int slave_need_to_reactivate_instances(struct slave_node *slave)
{
return slave->reactivate_instances;
}
HAPI void slave_set_reactivation(struct slave_node *slave, int flag)
{
slave->reactivate_slave = flag;
}
HAPI int slave_need_to_reactivate(struct slave_node *slave)
{
return slave->reactivate_slave;
}
HAPI int slave_network(const struct slave_node *slave)
{
return slave->network;
}
HAPI void slave_set_network(struct slave_node *slave, int network)
{
slave->network = network;
}
/* End of a file */
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