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Add a simple Job queue in default port. (#1685)

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Job queue (event loop) is the basis of Promise. Each port should implement their own job queue.

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
This commit is contained in:
Zidong Jiang
2017-03-28 21:15:01 +08:00
committed by GitHub
parent 21cec3eb16
commit 16d5d6f79d
7 changed files with 247 additions and 0 deletions
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jerry-core/ecma/operations/ecma-jobqueue.c
+56
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@@ -0,0 +1,56 @@
/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 "ecma-globals.h"
#include "ecma-helpers.h"
#include "ecma-jobqueue.h"
#include "jerry-port.h"
#ifndef CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmajobqueue ECMA Job Queue related routines
* @{
*/
/**
* The processor for PromiseReactionJob
*/
static ecma_value_t __attribute__ ((unused))
ecma_job_process_promise_reaction_job (void *job_p) /**< the job to be operated */
{
JERRY_UNUSED (job_p);
/** TODO: implement the function body */
return ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
} /* ecma_job_process_promise_reaction_job */
/**
* The processor for PromiseResolveThenableJob
*/
static ecma_value_t __attribute__ ((unused))
ecma_job_process_promise_thenable_job (void *job_p) /**< the job to be operated */
{
JERRY_UNUSED (job_p);
/** TODO: implement the function body */
return ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
} /* ecma_job_process_promise_thenable_job */
/**
* @}
* @}
*/
#endif /* !CONFIG_DISABLE_ES2015_PROMISE_BUILTIN */
jerry-core/ecma/operations/ecma-jobqueue.h
+33
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@@ -0,0 +1,33 @@
/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#ifndef ECMA_JOB_QUEUE_H
#define ECMA_JOB_QUEUE_H
#ifndef CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmajobqueue ECMA Job Queue related routines
* @{
*/
/**
* @}
* @}
*/
#endif /* !CONFIG_DISABLE_ES2015_PROMISE_BUILTIN */
#endif /* !ECMA_JOB_QUEUE_H */
jerry-core/jerry-port.h
+9
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@@ -17,6 +17,7 @@
#define JERRY_PORT_H
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#ifdef __cplusplus
@@ -139,6 +140,14 @@ bool jerry_port_get_time_zone (jerry_time_zone_t *tz_p);
*/
double jerry_port_get_current_time (void);
#ifndef CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
typedef uint32_t (*jerry_job_handler_t) (void *);
void jerry_port_jobqueue_enqueue (jerry_job_handler_t handler, void *job_p);
#endif /* !CONFIG_DISABLE_ES2015_PROMISE_BUILTIN */
/**
* @}
*/
jerry-core/profiles/es5.1.profile
+1
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@@ -1,3 +1,4 @@
CONFIG_DISABLE_ES2015_ARRAYBUFFER_BUILTIN
CONFIG_DISABLE_ES2015_BUILTIN
CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN
jerry-core/profiles/minimal.profile
+1
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@@ -5,6 +5,7 @@ CONFIG_DISABLE_DATE_BUILTIN
CONFIG_DISABLE_ERROR_BUILTINS
CONFIG_DISABLE_ES2015_ARRAYBUFFER_BUILTIN
CONFIG_DISABLE_ES2015_BUILTIN
CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN
CONFIG_DISABLE_JSON_BUILTIN
CONFIG_DISABLE_MATH_BUILTIN
targets/default/jerry-port-default-jobqueue.c
+141
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@@ -0,0 +1,141 @@
/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 "jerryscript.h"
#include "jerry-port.h"
#include "jerry-port-default.h"
#include "jmem.h"
#include "jrt.h"
#ifndef CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
typedef struct jerry_port_queueitem_t jerry_port_queueitem_t;
/**
* Description of the queue item.
*/
struct jerry_port_queueitem_t
{
jerry_port_queueitem_t *next_p; /**< points to next item */
jerry_job_handler_t handler; /**< the handler for the job*/
void *job_p; /**< points to the job */
};
/**
* Description of a job queue (FIFO)
*/
typedef struct
{
jerry_port_queueitem_t *head_p; /**< points to the head item of the queue */
jerry_port_queueitem_t *tail_p; /**< points to the tail item of the queue*/
} jerry_port_jobqueue_t;
static jerry_port_jobqueue_t queue;
/**
* Initialize the job queue
*/
void jerry_port_jobqueue_init (void)
{
queue.head_p = NULL;
queue.tail_p = NULL;
} /* jerry_port_jobqueue_init */
/**
* Enqueue a job
*/
void jerry_port_jobqueue_enqueue (jerry_job_handler_t handler, /**< the handler for the job */
void *job_p) /**< the job */
{
jerry_port_queueitem_t *item_p = jmem_heap_alloc_block (sizeof (jerry_port_queueitem_t));
item_p->job_p = job_p;
item_p->handler = handler;
if (queue.head_p == NULL)
{
JERRY_ASSERT (queue.tail_p == NULL);
queue.head_p = item_p;
item_p->next_p = NULL;
queue.tail_p = item_p;
return;
}
JERRY_ASSERT (queue.tail_p != NULL);
queue.tail_p->next_p = item_p;
queue.tail_p = item_p;
} /* jerry_port_jobqueue_enqueue */
/**
* Dequeue and get the job.
* @return pointer to jerry_port_queueitem_t
* It should be freed with jmem_heap_free_block
*/
static jerry_port_queueitem_t *
jerry_port_jobqueue_dequeue (void)
{
if (queue.head_p == NULL)
{
JERRY_ASSERT (queue.tail_p == NULL);
return NULL;
}
JERRY_ASSERT (queue.tail_p != NULL);
jerry_port_queueitem_t *item_p = queue.head_p;
queue.head_p = queue.head_p->next_p;
return item_p;
} /* jerry_port_jobqueue_dequeue */
/**
* Start the jobqueue.
* @return jerry value
* If exception happens in the handler, stop the queue
* and return the exception.
* Otherwise, return undefined
*/
jerry_value_t
jerry_port_jobqueue_run (void)
{
jerry_value_t ret;
while (true)
{
jerry_port_queueitem_t *item_p = jerry_port_jobqueue_dequeue ();
if (item_p == NULL)
{
return jerry_create_undefined ();
}
void *job_p = item_p->job_p;
jerry_job_handler_t handler = item_p->handler;
jmem_heap_free_block (item_p, sizeof (jerry_port_queueitem_t));
ret = handler (job_p);
if (jerry_value_has_error_flag (ret))
{
return ret;
}
jerry_release_value (ret);
}
} /* jerry_port_jobqueue_run */
#endif /* !CONFIG_DISABLE_ES2015_PROMISE_BUILTIN */
targets/default/jerry-port-default.h
+6
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@@ -16,6 +16,7 @@
#ifndef JERRY_PORT_DEFAULT_H
#define JERRY_PORT_DEFAULT_H
#include "jerryscript.h"
#include "jerry-port.h"
#include <stdbool.h>
@@ -36,6 +37,11 @@ bool jerry_port_default_is_abort_on_fail (void);
jerry_log_level_t jerry_port_default_get_log_level (void);
void jerry_port_default_set_log_level (jerry_log_level_t level);
#ifndef CONFIG_DISABLE_ES2015_PROMISE_BUILTIN
void jerry_port_jobqueue_init (void);
jerry_value_t jerry_port_jobqueue_run (void);
#endif /* !CONFIG_DISABLE_ES2015_PROMISE_BUILTIN */
/**
* @}
*/