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kernel: POSIX: Compatibility layer for POSIX timer APIs.

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This patch provides POSIX timer APIs for POSIX 1003.1 PSE52 standard.

Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>
This commit is contained in:
Youvedeep Singh 2018-02-21 16:15:26 +05:30 • committed by Anas Nashif
commit 8d040f1bcb
7 changed files with 297 additions and 5 deletions
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44
include/posix/signal.h Normal file
View file

@ -0,0 +1,44 @@
/*
* Copyright (c) 2018 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __POSIX_SIGNAL_H__
#define __POSIX_SIGNAL_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "sys/types.h"
#ifndef SIGEV_NONE
#define SIGEV_NONE 1
#endif
#ifndef SIGEV_SIGNAL
#define SIGEV_SIGNAL 2
#endif
#ifndef SIGEV_THREAD
#define SIGEV_THREAD 3
#endif
typedef union sigval {
int sival_int;
void *sival_ptr;
} sigval;
typedef struct sigevent {
int sigev_notify;
int sigev_signo;
sigval sigev_value;
void (*sigev_notify_function)(sigval val);
pthread_attr_t *sigev_notify_attributes;
} sigevent;
#ifdef __cplusplus
}
#endif
#endif /* __POSIX_TIME_H__ */

1
include/posix/sys/types.h
View file

@ -60,6 +60,7 @@ typedef struct pthread_barrierattr {
#ifndef CONFIG_NEWLIB_LIBC
typedef u32_t clockid_t;
#endif /*CONFIG_NEWLIB_LIBC */
typedef unsigned long timer_t;
typedef unsigned long useconds_t;
#endif /* CONFIG_PTHREAD_IPC */

31
include/posix/time.h
View file

@ -14,19 +14,38 @@ extern "C" {
#include_next <time.h>
#else
struct timespec {
s32_t tv_sec;
s32_t tv_nsec;
signed int tv_sec;
signed int tv_nsec;
};
struct itimerspec {
struct timespec it_interval; /* Timer interval */
struct timespec it_value; /* Timer expiration */
};
#endif /* CONFIG_NEWLIB_LIBC */
#include <kernel.h>
#include <errno.h>
#include "sys/types.h"
#include "signal.h"
#ifndef CLOCK_REALTIME
#define CLOCK_REALTIME 0
#endif
#ifndef CLOCK_MONOTONIC
#define CLOCK_MONOTONIC 1
#endif
#define NSEC_PER_MSEC (NSEC_PER_USEC * USEC_PER_MSEC)
#ifndef TIMER_ABSTIME
#define TIMER_ABSTIME 4
#endif
static inline s32_t _ts_to_ms(const struct timespec *to)
{
return (to->tv_sec * 1000) + (to->tv_nsec / 1000000);
return (to->tv_sec * MSEC_PER_SEC) + (to->tv_nsec / NSEC_PER_MSEC);
}
/**
@ -41,6 +60,12 @@ static inline int clock_settime(clockid_t clock_id, const struct timespec *ts)
}
int clock_gettime(clockid_t clock_id, struct timespec *ts);
/* Timer APIs */
int timer_create(clockid_t clockId, struct sigevent *evp, timer_t *timerid);
int timer_delete(timer_t timerid);
int timer_gettime(timer_t timerid, struct itimerspec *its);
int timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
struct itimerspec *ovalue);
#ifdef __cplusplus
}