The release of the semaphore indicating the item was successfully sent must be the last semaphore released. The receiver may be in another task and may delete the Ringbuffer (such as with a return code across tasks design pattern) if they are through with the Ringbuffer.
The function xRingbufferSendAcquire followed by xRingbufferSendComplete had the semaphores released in the proper order and that same pattern should have been used in xRingbufferSend and xRingbufferSendFromISR. This commit fixes this order.
Issue (IDFGH-6030) #7716 describes the problem in more detail.
Closes IDFGH-6030, https://github.com/espressif/esp-idf/issues/7716
Closes IDFGH-6036, https://github.com/espressif/esp-idf/pull/7721
* Target components pull in xtensa component directly
* Use CPU HAL where applicable
* Remove unnecessary xtensa headers
* Compilation changes necessary to support non-xtensa gcc types (ie int32_t/uint32_t is no
longer signed/unsigned int).
Changes come from internal branch commit a6723fc
This commit updates does the following:
- xRingbufferCreateStatic() added to allow ringbuffers via to be statically
allocated. Docs and unit tests update accordingly. Closes#3064
- Fix doc typos, closes#3248. Updated API reference regarding to mention
item size limits of no-split buffers when calling
xRingbufferGetCurFreeSize() or xRingbufferGetMaxItemSize(), closes#3117.
- Remove the following deprecated types/functions for v4.0
- xRingbufferIsNextItemWrapped()
- xRingbufferAddToQueueSetWrite()
- xRingbufferRemoveFromQueueSetWrite()
The following 2 compiler warnings are only reproducible when setting:
OPTIMIZATION_FLAGS = -Ofast
esp-idf/components/soc/esp32/rtc_clk.c:
In function 'rtc_clk_cpu_freq_get':
esp-idf/components/soc/esp32/rtc_clk.c:506:12:
error: 'freq' may be used uninitialized in this function
[-Werror=maybe-uninitialized]
return freq;
esp-idf/components/esp_ringbuf/ringbuf.c:
In function 'xRingbufferReceiveSplitFromISR':
esp-idf/components/esp_ringbuf/ringbuf.c:934:26:
error: 'pvTempTailItem' may be used uninitialized in this function
[-Werror=maybe-uninitialized]
*ppvTailItem = pvTempTailItem;
Closes https://github.com/espressif/esp-idf/pull/2878
