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<div class="title">vTaskSuspendAll</div> </div>
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<p>task. h </p><pre>void <a class="el" href="task_8h.html#a366b302eba79d10b5ee2a3756f0fcc43">vTaskSuspendAll( void )</a>;</pre><p>Suspends the scheduler without disabling interrupts. Context switches will not occur while the scheduler is suspended.</p>
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<p>After calling vTaskSuspendAll () the calling task will continue to execute without risk of being swapped out until a call to xTaskResumeAll () has been made.</p>
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<p>API functions that have the potential to cause a context switch (for example, <a class="el" href="task_8h.html#a067da3e949e248096ec6c01f9cb75a47">vTaskDelayUntil()</a>, <a class="el" href="queue_8h.html#af7eb49d3249351176992950d9185abe9">xQueueSend()</a>, etc.) must not be called while the scheduler is suspended.</p>
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<p>Example usage: </p><pre>
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void vTask1( void * pvParameters )
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{
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for( ;; )
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{
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// Task code goes here.</pre><pre> // ...</pre><pre> // At some point the task wants to perform a long operation during
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// which it does not want to get swapped out. It cannot use
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// taskENTER_CRITICAL ()/taskEXIT_CRITICAL () as the length of the
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// operation may cause interrupts to be missed - including the
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// ticks.</pre><pre> // Prevent the real time kernel swapping out the task.
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vTaskSuspendAll ();</pre><pre> // Perform the operation here. There is no need to use critical
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// sections as we have all the microcontroller processing time.
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// During this time interrupts will still operate and the kernel
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// tick count will be maintained.</pre><pre> // ...</pre><pre> // The operation is complete. Restart the kernel.
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xTaskResumeAll ();
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}
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}
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