jerryscript/targets/mbedos5/source/jerry_port_mbed.c
Akos Kiss 91e976f8c7 Move jerry-core API implementations and headers into dedicated subdirectories (#1793)
Moved all public API headers under the `jerry-core/include`
directory. This makes installing all the public headers easier.
Also, should we have new public headers in the future, their
installation will be automatic, there will be no need to update the
build files. Moreover, this aligns better with the structure of
other libraries in the project (in those cases, public headers
always reside in `<library>/include`).

Moved all public API implementations under the `jerry-core/api`
directory. This cleans up the root directory of `jerry-core`,
moving all implementation code under "modules", i.e.,
subdirectories. This also makes the future splitting of the big and
monolithic `jerry.c` along features easier, if needed. (Debugger
and snapshot-related functions are already in separate sources.)

Notes:
* `jerryscript.h` is split up to separate header files along
  feature boundaries. These new headers are included by
  `jerryscript.h`, so this is not a breaking change but header
  modularization only.
* `jerry-snapshot.h` is still under `jerry-core/api`, keeping it as
  a non-public header.
* This commit also adapts all targets to the include path change.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
2017-05-04 15:28:24 +02:00

104 lines
3.0 KiB
C

/* 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.
*/
#define _BSD_SOURCE
#include <stdarg.h>
#include <stdlib.h>
#include <sys/time.h>
#include "jerry-core/include/jerryscript-port.h"
#include "us_ticker_api.h"
#ifndef JSMBED_OVERRIDE_JERRY_PORT_LOG
/**
* Provide log message implementation for the engine.
*/
void
jerry_port_log (jerry_log_level_t level, /**< log level */
const char *format, /**< format string */
...) /**< parameters */
{
(void) level; /* ignore log level */
va_list args;
va_start (args, format);
vfprintf (stderr, format, args);
va_end (args);
if (strlen (format) == 1 && format[0] == 0x0a) /* line feed (\n) */
{
printf ("\r"); /* add CR for proper display in serial monitors */
}
} /* jerry_port_log */
#endif /* JSMBED_OVERRIDE_JERRY_PORT_LOG */
/**
* Implementation of jerry_port_fatal.
*/
void
jerry_port_fatal (jerry_fatal_code_t code) /**< fatal code enum item */
{
exit (code);
} /* jerry_port_fatal */
/**
* Implementation of jerry_port_get_time_zone.
*
* @return true - if success
*/
bool
jerry_port_get_time_zone (jerry_time_zone_t *tz_p) /**< timezone pointer */
{
tz_p->offset = 0;
tz_p->daylight_saving_time = 0;
return true;
} /* jerry_port_get_time_zone */
/**
* Implementation of jerry_port_get_current_time.
*
* @return current timer's counter value in milliseconds
*/
double
jerry_port_get_current_time (void)
{
static uint64_t last_tick = 0;
static time_t last_time = 0;
static uint32_t skew = 0;
uint64_t curr_tick = us_ticker_read (); /* The value is in microseconds. */
time_t curr_time = time(NULL); /* The value is in seconds. */
double result = curr_time * 1000;
/* The us_ticker_read () has an overflow for each UINT_MAX microseconds
* (~71 mins). For each overflow event the ticker-based clock is about 33
* milliseconds fast. Without a timer thread the milliseconds part of the
* time can be corrected if the difference of two get_current_time calls
* are within the mentioned 71 mins. Above that interval we can assume
* that the milliseconds part of the time is negligibe.
*/
if (curr_time - last_time > (time_t)(((uint32_t)-1) / 1000000)) {
skew = 0;
} else if (last_tick > curr_tick) {
skew = (skew + 33) % 1000;
}
result += (curr_tick / 1000 - skew) % 1000;
last_tick = curr_tick;
last_time = curr_time;
return result;
} /* jerry_port_get_current_time */