/*************************************************************************** * Copyright (c) 2024 Microsoft Corporation * * This program and the accompanying materials are made available under the * terms of the MIT License which is available at * https://opensource.org/licenses/MIT. * * SPDX-License-Identifier: MIT **************************************************************************/ /**************************************************************************/ /**************************************************************************/ /** */ /** ThreadX Component */ /** */ /** Thread */ /** */ /**************************************************************************/ /**************************************************************************/ #define TX_SOURCE_CODE /* Include necessary system files. */ #include "tx_api.h" #include "tx_trace.h" #include "tx_thread.h" /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _tx_thread_wait_abort PORTABLE C */ /* 6.2.1 */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function aborts the wait condition that the specified thread */ /* is in - regardless of what object the thread is waiting on - and */ /* returns a TX_WAIT_ABORTED status to the specified thread. */ /* */ /* INPUT */ /* */ /* thread_ptr Thread to abort the wait on */ /* */ /* OUTPUT */ /* */ /* status Return completion status */ /* */ /* CALLS */ /* */ /* Suspension Cleanup Functions */ /* _tx_thread_system_resume */ /* _tx_thread_system_ni_resume Non-interruptable resume thread */ /* */ /* CALLED BY */ /* */ /* Application code */ /* */ /* RELEASE HISTORY */ /* */ /* DATE NAME DESCRIPTION */ /* */ /* 05-19-2020 William E. Lamie Initial Version 6.0 */ /* 09-30-2020 Yuxin Zhou Modified comment(s), */ /* resulting in version 6.1 */ /* 03-08-2023 Scott Larson Check if thread is coming out */ /* of suspension elsewhere, */ /* resulting in version 6.2.1 */ /* */ /**************************************************************************/ UINT _tx_thread_wait_abort(TX_THREAD *thread_ptr) { TX_INTERRUPT_SAVE_AREA VOID (*suspend_cleanup)(struct TX_THREAD_STRUCT *suspend_thread_ptr, ULONG suspension_sequence); UINT status; ULONG suspension_sequence; /* Disable interrupts. */ TX_DISABLE /* If trace is enabled, insert this event into the trace buffer. */ TX_TRACE_IN_LINE_INSERT(TX_TRACE_THREAD_WAIT_ABORT, thread_ptr, thread_ptr -> tx_thread_state, 0, 0, TX_TRACE_THREAD_EVENTS) /* Log this kernel call. */ TX_EL_THREAD_WAIT_ABORT_INSERT /* Determine if the thread is currently suspended. */ if (thread_ptr -> tx_thread_state < TX_SLEEP) { /* Thread is either ready, completed, terminated, or in a pure suspension condition. */ /* Restore interrupts. */ TX_RESTORE /* Just return with an error message to indicate that nothing was done. */ status = TX_WAIT_ABORT_ERROR; } else { /* Check for a sleep condition. */ if (thread_ptr -> tx_thread_state == TX_SLEEP) { /* Set the state to terminated. */ thread_ptr -> tx_thread_state = TX_SUSPENDED; /* Set the TX_WAIT_ABORTED status in the thread that is sleeping. */ thread_ptr -> tx_thread_suspend_status = TX_WAIT_ABORTED; /* Make sure there isn't a suspend cleanup routine. */ thread_ptr -> tx_thread_suspend_cleanup = TX_NULL; #ifndef TX_NOT_INTERRUPTABLE /* Increment the disable preemption flag. */ _tx_thread_preempt_disable++; /* Restore interrupts. */ TX_RESTORE #endif } else if(thread_ptr -> tx_thread_suspend_cleanup == TX_NULL) { /* Thread is coming out of suspension elsewhere. */ #ifndef TX_NOT_INTERRUPTABLE /* Increment the disable preemption flag. */ _tx_thread_preempt_disable++; /* Restore interrupts. */ TX_RESTORE #endif } else { /* Process all other suspension timeouts. */ /* Set the state to suspended. */ thread_ptr -> tx_thread_state = TX_SUSPENDED; /* Pickup the cleanup routine address. */ suspend_cleanup = thread_ptr -> tx_thread_suspend_cleanup; #ifndef TX_NOT_INTERRUPTABLE /* Pickup the suspension sequence number that is used later to verify that the cleanup is still necessary. */ suspension_sequence = thread_ptr -> tx_thread_suspension_sequence; #else /* When not interruptable is selected, the suspension sequence is not used - just set to 0. */ suspension_sequence = ((ULONG) 0); #endif /* Set the TX_WAIT_ABORTED status in the thread that was suspended. */ thread_ptr -> tx_thread_suspend_status = TX_WAIT_ABORTED; #ifndef TX_NOT_INTERRUPTABLE /* Increment the disable preemption flag. */ _tx_thread_preempt_disable++; /* Restore interrupts. */ TX_RESTORE #endif /* Call cleanup routine. */ (suspend_cleanup)(thread_ptr, suspension_sequence); } /* If the abort of the thread wait was successful, if so resume the thread. */ if (thread_ptr -> tx_thread_suspend_status == TX_WAIT_ABORTED) { #ifdef TX_THREAD_ENABLE_PERFORMANCE_INFO /* Increment the total number of thread wait aborts. */ _tx_thread_performance_wait_abort_count++; /* Increment this thread's wait abort count. */ thread_ptr -> tx_thread_performance_wait_abort_count++; #endif #ifdef TX_NOT_INTERRUPTABLE /* Resume the thread! */ _tx_thread_system_ni_resume(thread_ptr); /* Restore interrupts. */ TX_RESTORE #else /* Lift the suspension on the previously waiting thread. */ _tx_thread_system_resume(thread_ptr); #endif /* Return a successful status. */ status = TX_SUCCESS; } else { #ifdef TX_NOT_INTERRUPTABLE /* Restore interrupts. */ TX_RESTORE #else /* Disable interrupts. */ TX_DISABLE /* Decrement the disable preemption flag. */ _tx_thread_preempt_disable--; /* Restore interrupts. */ TX_RESTORE #endif /* Return with an error message to indicate that nothing was done. */ status = TX_WAIT_ABORT_ERROR; } } /* Return completion status. */ return(status); }