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nuttx/sched/mqueue/mqueue.h
Xiang Xiao c47b1e2c5b !sys/types.h: change time_t and clock_t to int64_t to align with other OSes 
POSIX leaves the signedness of time_t and clock_t unspecified, but
mainstream implementations (Linux glibc/musl, the BSDs, macOS, RTEMS,
Zephyr's POSIX layer, Windows _time64) expose time_t as signed 64-bit.
NuttX has historically used uint64_t only because it was tied to the
CONFIG_SYSTEM_TIME64 knob; with that gone, switch:

  time_t   : uint64_t  -> int64_t
  clock_t  : uint64_t  -> int64_t
  CLOCK_MAX: UINT64_MAX -> INT64_MAX

This lets (time_t)-1 sentinels, negative tick deltas, and host-side
headers behave as on every other POSIX system without source churn.

Headers updated:
  - include/sys/types.h, include/limits.h, include/nuttx/clock.h
  - include/nuttx/fs/hostfs.h (nuttx_time_t alias)
  - include/nuttx/{mqueue.h,wdog.h,wqueue.h,timers/clkcnt.h}

Because clock_t is now signed 64-bit, the NuttX-internal sclock_t
alias becomes redundant: every sclock_t/SCLOCK_MAX use is folded
back to clock_t/CLOCK_MAX (notably in sched/wdog, sched/mqueue,
sched/sched, sched/clock, sched/timer, libs/libc/time, fs/vfs and
the drivers/arch consumers below).

Tick/period constants (NSEC_PER_SEC, USEC_PER_SEC, MSEC_PER_SEC,
SEC_PER_MIN, ...) in include/nuttx/clock.h are retyped from "long"
literals to INT64_C(...) so that 64-bit arithmetic no longer
depends on the host's long width.

Strip now-redundant (time_t)/(clock_t)/(unsigned long) casts and
unsigned-only branches across the tree:
  - arch RTC / oneshot / tickless lowerhalfs:
      arm: cxd56xx, efm32, imxrt, lc823450, max326xx, sam34, sama5,
           samd5e5, samv7, stm32, stm32f7, stm32h7, stm32l4, stm32wb,
           xmc4
      mips: pic32mz       sparc: bm3803       x86_64: intel64
      risc-v/xtensa: espressif (esp_i2c[_slave], esp_rtc,
           esp32c3{_i2c,_rtc,_wifi_adapter}, esp32{,s2,s3}_*),
           mpfs_perf
  - drivers: audio/tone, input/aw86225, power/pm/{activity,
           stability}_governor, rpmsg/rpmsg_ping,
           timers/{ds3231,mcp794xx,pcf85263,rx8010},
           wireless/ieee80211/bcm43xxx, wireless/spirit/spirit_spi
  - core: fs/vfs/{fs_poll,fs_timerfd}, mm/iob/iob_alloc,
          libs/libc/{netdb/lib_dnscache,time/{lib_calendar2utc,
          lib_time}}, net/icmp/icmp_pmtu, net/icmpv6/icmpv6_pmtu,
          net/ipfrag, net/tcp/{tcp.h,tcp_timer},
          net/utils/net_snoop, net/mld/mld_query (drop the now-dead
          mld_mrc2mrd helper since signed math handles it directly),
          sched/clock/{clock,clock_initialize},
          sched/sched/{sched_profil,sched_setparam,sched_setscheduler},
          sched/pthread/pthread_create,
          sched/wdog/{wd_gettime,wd_start,wdog.h},
          sched/timer/timer_gettime, sched/mqueue/*

Flip the few in-tree printf format strings that assumed an
unsigned 64-bit tv_sec:
  * drivers/rpmsg/rpmsg_ping.c                       PRIu64 -> PRId64
  * arch/xtensa/src/esp32{,s2,s3}/esp32*_oneshot_lowerhalf.c
                                          PRIu32 (already wrong) -> PRId64

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2026-05-19 16:21:28 +08:00

151 lines
4.8 KiB
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/****************************************************************************
* sched/mqueue/mqueue.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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 __SCHED_MQUEUE_MQUEUE_H
#define __SCHED_MQUEUE_MQUEUE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <limits.h>
#include <mqueue.h>
#include <sched.h>
#include <nuttx/spinlock.h>
#include <nuttx/mqueue.h>
#if defined(CONFIG_MQ_MAXMSGSIZE) && CONFIG_MQ_MAXMSGSIZE > 0
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define MQ_MAX_BYTES CONFIG_MQ_MAXMSGSIZE
#define MQ_MAX_MSGS 16
#define MQ_PRIO_MAX _POSIX_MQ_PRIO_MAX
#define MQ_MSG_SIZE(n) (sizeof(struct mqueue_msg_s) + (n) - 1)
/****************************************************************************
* Public Type Definitions
****************************************************************************/
enum mqalloc_e
{
MQ_ALLOC_FIXED = 0, /* Pre-allocated; never freed */
MQ_ALLOC_DYN, /* Dynamically allocated; free when unused */
MQ_ALLOC_IRQ /* Preallocated, reserved for interrupt handling */
};
/* This structure describes one buffered POSIX message. */
struct mqueue_msg_s
{
struct list_node node; /* Link node to message */
uint8_t type; /* (Used to manage allocations) */
uint8_t priority; /* Priority of message */
#if MQ_MAX_BYTES < 256
uint8_t msglen; /* Message data length */
#else
uint16_t msglen; /* Message data length */
#endif
char mail[1]; /* Message data */
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* The g_msgfree is a list of messages that are available for general use.
* The number of messages in this list is a system configuration item.
*/
EXTERN struct list_node g_msgfree;
/* The g_msgfreeirq is a list of messages that are reserved for use by
* interrupt handlers.
*/
EXTERN struct list_node g_msgfreeirq;
EXTERN spinlock_t g_msgfreelock;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
struct tcb_s; /* Forward reference */
struct task_group_s; /* Forward reference */
/* Functions defined in mq_initialize.c *************************************/
void nxmq_initialize(void);
/* mq_msgfree.c *************************************************************/
void nxmq_free_msg(FAR struct mqueue_msg_s *mqmsg);
/* mq_waitirq.c *************************************************************/
void nxmq_wait_irq(FAR struct tcb_s *wtcb, int errcode);
/* mq_rcvinternal.c *********************************************************/
int nxmq_wait_receive(FAR struct mqueue_inode_s *msgq,
FAR struct mqueue_msg_s **rcvmsg,
FAR const struct timespec *abstime,
clock_t ticks);
void nxmq_notify_receive(FAR struct mqueue_inode_s *msgq);
/* mq_sndinternal.c *********************************************************/
int nxmq_wait_send(FAR struct mqueue_inode_s *msgq,
FAR const struct timespec *abstime,
clock_t ticks);
void nxmq_notify_send(FAR struct mqueue_inode_s *msgq);
/* mq_recover.c *************************************************************/
void nxmq_recover(FAR struct tcb_s *tcb);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* defined(CONFIG_MQ_MAXMSGSIZE) && CONFIG_MQ_MAXMSGSIZE > 0 */
#endif /* __SCHED_MQUEUE_MQUEUE_H */
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