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[Kernel] message 可以返回消息的实际大小 (#7709)

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zhkag
2023-06-21 10:22:42 +00:00
committed by GitHub
parent b4e59bac4e
commit 33f550cb65
18 changed files with 73 additions and 56 deletions
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16
include/rtthread.h
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@@ -458,6 +458,16 @@ rt_err_t rt_mb_control(rt_mailbox_t mb, int cmd, void *arg);
#endif
#ifdef RT_USING_MESSAGEQUEUE
struct rt_mq_message
{
struct rt_mq_message *next;
rt_ssize_t length;
};
#define RT_MQ_BUF_SIZE(msg_size, max_msgs) \
((RT_ALIGN((msg_size), RT_ALIGN_SIZE) + sizeof(struct rt_mq_message)) * (max_msgs))
/*
* message queue interface
*/
@@ -492,15 +502,15 @@ rt_err_t rt_mq_send_wait_killable(rt_mq_t mq,
rt_size_t size,
rt_int32_t timeout);
rt_err_t rt_mq_urgent(rt_mq_t mq, const void *buffer, rt_size_t size);
rt_err_t rt_mq_recv(rt_mq_t mq,
rt_ssize_t rt_mq_recv(rt_mq_t mq,
void *buffer,
rt_size_t size,
rt_int32_t timeout);
rt_err_t rt_mq_recv_interruptible(rt_mq_t mq,
rt_ssize_t rt_mq_recv_interruptible(rt_mq_t mq,
void *buffer,
rt_size_t size,
rt_int32_t timeout);
rt_err_t rt_mq_recv_killable(rt_mq_t mq,
rt_ssize_t rt_mq_recv_killable(rt_mq_t mq,
void *buffer,
rt_size_t size,
rt_int32_t timeout);