Release 6.1.9
This commit is contained in:
Yuxin Zhou
@@ -12,8 +12,8 @@
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** ThreadX Component */
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/** */
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/** ThreadX Component */
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/** */
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/** Queue */
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/** */
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@@ -31,50 +31,52 @@
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#include "tx_queue.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _tx_queue_receive PORTABLE C */
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _tx_queue_receive PORTABLE C */
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/* 6.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function receives a message from the specified queue. If there */
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/* are no messages in the queue, this function waits according to the */
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/* option specified. */
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/* */
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/* INPUT */
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/* */
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/* queue_ptr Pointer to queue control block */
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/* destination_ptr Pointer to message destination */
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/* **** MUST BE LARGE ENOUGH TO */
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/* HOLD MESSAGE **** */
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/* wait_option Suspension option */
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/* */
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/* OUTPUT */
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/* */
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/* status Completion status */
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/* */
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/* CALLS */
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/* */
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/* _tx_thread_system_resume Resume thread routine */
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/* _tx_thread_system_ni_resume Non-interruptable resume thread */
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/* _tx_thread_system_suspend Suspend thread routine */
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/* _tx_thread_system_ni_suspend Non-interruptable suspend thread */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* */
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/* This function receives a message from the specified queue. If there */
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/* are no messages in the queue, this function waits according to the */
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/* option specified. */
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/* */
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/* INPUT */
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/* */
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/* queue_ptr Pointer to queue control block */
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/* destination_ptr Pointer to message destination */
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/* **** MUST BE LARGE ENOUGH TO */
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/* HOLD MESSAGE **** */
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/* wait_option Suspension option */
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/* */
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/* OUTPUT */
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/* */
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/* status Completion status */
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/* */
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/* CALLS */
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/* */
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/* _tx_thread_system_resume Resume thread routine */
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/* _tx_thread_system_ni_resume Non-interruptable resume thread */
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/* _tx_thread_system_suspend Suspend thread routine */
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/* _tx_thread_system_ni_suspend Non-interruptable suspend thread */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 09-30-2020 William E. Lamie Initial Version 6.1 */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 Yuxin Zhou Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _tx_queue_receive(TX_QUEUE *queue_ptr, VOID *destination_ptr, ULONG wait_option)
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@@ -82,9 +84,9 @@ UINT _tx_queue_receive(TX_QUEUE *queue_ptr, VOID *destination_ptr, ULONG wait_o
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TX_INTERRUPT_SAVE_AREA
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TX_THREAD *thread_ptr;
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ULONG *source;
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ULONG *destination;
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TX_THREAD *thread_ptr;
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ULONG *source;
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ULONG *destination;
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UINT size;
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UINT suspended_count;
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TX_THREAD *next_thread;
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@@ -116,7 +118,7 @@ UINT status;
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/* Pickup the thread suspension count. */
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suspended_count = queue_ptr -> tx_queue_suspended_count;
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/* Determine if there is anything in the queue. */
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if (queue_ptr -> tx_queue_enqueued != TX_NO_MESSAGES)
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{
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@@ -126,13 +128,13 @@ UINT status;
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{
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/* There is a message waiting in the queue and there are no suspensi. */
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/* Setup source and destination pointers. */
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source = queue_ptr -> tx_queue_read;
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destination = TX_VOID_TO_ULONG_POINTER_CONVERT(destination_ptr);
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size = queue_ptr -> tx_queue_message_size;
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size = queue_ptr -> tx_queue_message_size;
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/* Copy message. Note that the source and destination pointers are
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/* Copy message. Note that the source and destination pointers are
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incremented by the macro. */
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TX_QUEUE_MESSAGE_COPY(source, destination, size)
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@@ -143,10 +145,10 @@ UINT status;
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/* Yes, wrap around to the beginning. */
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source = queue_ptr -> tx_queue_start;
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}
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/* Setup the queue read pointer. */
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queue_ptr -> tx_queue_read = source;
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/* Increase the amount of available storage. */
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queue_ptr -> tx_queue_available_storage++;
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@@ -158,18 +160,18 @@ UINT status;
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}
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else
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{
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/* At this point we know the queue is full. */
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/* Pickup thread suspension list head pointer. */
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thread_ptr = queue_ptr -> tx_queue_suspension_list;
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/* Now determine if there is a queue front suspension active. */
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/* Is the front suspension flag set? */
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if (thread_ptr -> tx_thread_suspend_option == TX_TRUE)
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{
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/* Yes, a queue front suspension is present. */
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/* Return the message associated with this suspension. */
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@@ -177,13 +179,13 @@ UINT status;
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/* Setup source and destination pointers. */
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source = TX_VOID_TO_ULONG_POINTER_CONVERT(thread_ptr -> tx_thread_additional_suspend_info);
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destination = TX_VOID_TO_ULONG_POINTER_CONVERT(destination_ptr);
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size = queue_ptr -> tx_queue_message_size;
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size = queue_ptr -> tx_queue_message_size;
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/* Copy message. Note that the source and destination pointers are
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/* Copy message. Note that the source and destination pointers are
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incremented by the macro. */
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TX_QUEUE_MESSAGE_COPY(source, destination, size)
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/* Message is now in the caller's destination. See if this is the only suspended thread
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/* Message is now in the caller's destination. See if this is the only suspended thread
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on the list. */
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suspended_count--;
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if (suspended_count == TX_NO_SUSPENSIONS)
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@@ -207,8 +209,8 @@ UINT status;
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previous_thread = thread_ptr -> tx_thread_suspended_previous;
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next_thread -> tx_thread_suspended_previous = previous_thread;
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previous_thread -> tx_thread_suspended_next = next_thread;
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}
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}
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/* Decrement the suspension count. */
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queue_ptr -> tx_queue_suspended_count = suspended_count;
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@@ -218,7 +220,7 @@ UINT status;
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thread_ptr -> tx_thread_suspend_cleanup = TX_NULL;
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/* Put return status into the thread control block. */
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thread_ptr -> tx_thread_suspend_status = TX_SUCCESS;
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thread_ptr -> tx_thread_suspend_status = TX_SUCCESS;
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#ifdef TX_NOT_INTERRUPTABLE
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@@ -242,16 +244,16 @@ UINT status;
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else
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{
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/* At this point, we know that the queue is full and there
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/* At this point, we know that the queue is full and there
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are one or more threads suspended trying to send another
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message to this queue. */
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/* Setup source and destination pointers. */
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source = queue_ptr -> tx_queue_read;
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destination = TX_VOID_TO_ULONG_POINTER_CONVERT(destination_ptr);
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size = queue_ptr -> tx_queue_message_size;
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size = queue_ptr -> tx_queue_message_size;
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/* Copy message. Note that the source and destination pointers are
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/* Copy message. Note that the source and destination pointers are
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incremented by the macro. */
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TX_QUEUE_MESSAGE_COPY(source, destination, size)
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@@ -265,7 +267,7 @@ UINT status;
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/* Setup the queue read pointer. */
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queue_ptr -> tx_queue_read = source;
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/* Disable preemption. */
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_tx_thread_preempt_disable++;
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@@ -287,16 +289,16 @@ UINT status;
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/* Setup source and destination pointers. */
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source = TX_VOID_TO_ULONG_POINTER_CONVERT(thread_ptr -> tx_thread_additional_suspend_info);
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destination = queue_ptr -> tx_queue_write;
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size = queue_ptr -> tx_queue_message_size;
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size = queue_ptr -> tx_queue_message_size;
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/* Copy message. Note that the source and destination pointers are
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/* Copy message. Note that the source and destination pointers are
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incremented by the macro. */
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TX_QUEUE_MESSAGE_COPY(source, destination, size)
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/* Determine if we are at the end. */
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if (destination == queue_ptr -> tx_queue_end)
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{
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/* Yes, wrap around to the beginning. */
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destination = queue_ptr -> tx_queue_start;
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}
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@@ -307,7 +309,7 @@ UINT status;
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/* Pickup thread pointer. */
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thread_ptr = queue_ptr -> tx_queue_suspension_list;
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/* Message is now in the queue. See if this is the only suspended thread
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/* Message is now in the queue. See if this is the only suspended thread
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on the list. */
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suspended_count--;
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if (suspended_count == TX_NO_SUSPENSIONS)
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@@ -331,8 +333,8 @@ UINT status;
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previous_thread = thread_ptr -> tx_thread_suspended_previous;
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next_thread -> tx_thread_suspended_previous = previous_thread;
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previous_thread -> tx_thread_suspended_next = next_thread;
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}
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}
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/* Decrement the suspension count. */
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queue_ptr -> tx_queue_suspended_count = suspended_count;
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@@ -342,7 +344,7 @@ UINT status;
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thread_ptr -> tx_thread_suspend_cleanup = TX_NULL;
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/* Put return status into the thread control block. */
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thread_ptr -> tx_thread_suspend_status = TX_SUCCESS;
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thread_ptr -> tx_thread_suspend_status = TX_SUCCESS;
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#ifdef TX_NOT_INTERRUPTABLE
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@@ -376,7 +378,7 @@ UINT status;
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/* Restore interrupts. */
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TX_RESTORE
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/* Suspension is not allowed if the preempt disable flag is non-zero at this point - return error completion. */
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status = TX_QUEUE_EMPTY;
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}
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@@ -393,7 +395,7 @@ UINT status;
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/* Increment the number of empty suspensions on this queue. */
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queue_ptr -> tx_queue_performance_empty_suspension_count++;
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#endif
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/* Pickup thread pointer. */
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TX_THREAD_GET_CURRENT(thread_ptr)
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@@ -475,7 +477,7 @@ UINT status;
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/* Restore interrupts. */
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TX_RESTORE
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/* Immediate return, return error completion. */
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status = TX_QUEUE_EMPTY;
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}
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