rt-thread.git/components/drivers/ipc/dataqueue.c, branch v5.3.0-beta

ipc: fix recursive data queue locking on SMP

2026-08-03T01:43:57Z

rt_data_queue_pop() holds the data queue spinlock while updating the ring state, then calls rt_data_queue_len(). The length function tries to acquire the same non-recursive spinlock again, causing an SMP deadlock when a pop leaves the queue non-empty. Add a private _data_queue_len_nolock() helper for callers which already hold the queue lock. Keep the public rt_data_queue_len() protected by one spinlock acquisition. This does not change the public API, ABI, queue state transitions, low-water mark wakeups, or event callback behavior. Tested on a four-core Spacemit K1 with cyclic HDMI playback and by building the SMP QEMU Virt64 RISC-V BSP with generic audio, Intel HDA and VirtIO Sound. Signed-off-by: GuEe-GUI <2991707448@qq.com>

RT_TIMER_CTRL_SET_TIME only accept rt_tick_t, pass rt_tick_t instead int/rt_int32_t

2025-09-24T10:12:36Z

[ipc] [dataqueue] 修复队列 pop 挂起的线程 push 无法恢复运行的错误 (#8839)

2024-04-22T12:20:35Z

队列在 push 后查找挂起列表时使用了错误的挂起列表。

🎯 Sync smart & scheduler codes (#8537)

2024-02-23T09:49:15Z

Signed-off-by: Shell Co-authored-by: xqyjlj

🎈 perf: perf rt_hw_interrupt_disable/enable (#8042)

2023-10-25T12:31:25Z

Signed-off-by: Shell Co-authored-by: Shell

[drivers/ipc] fix the recursive including if legacy enabled

2023-07-29T02:17:40Z

[HUST CSE] Fix many abnormal symbols in annotations and format code

2023-04-18T02:26:23Z

[errno code]fix that use RT_ENOMEM without -

2023-03-23T05:55:21Z

[errno code][-RT_ETIMEOUT] fix that use RT_ETIMEOUT without -

2023-03-22T05:54:52Z

[errno code][-RT_ERROR] fix that use RT_ERROR without -

2023-03-20T04:06:16Z