#include <nitro/os.h>u32 OS_EnableScheduler( void );None.
The internal counter value after canceling the suppression of the scheduler operation.
When this value is larger than 0, the scheduler operation is suppressed.
Cancels the suppressed operation of the thread system scheduler. In other words, rescheduling will be resumed.
If the operation of the thread system scheduler is suppressed, the rescheduling of the thread will not occur, even when the functions such as OS_WakeupThread and OS_SetThreadPriority that have the possibility of generating the rescheduling of threads are called.
Normally, this OS_EnableScheduler is called with OS_DisableScheduler() as a pair.
Call OS_DisableScheduler and OS_EnableScheduler while the interrupts are prohibited.
The scheduler has the internal counter. That counter, which is normally set to 0, increments by one with OS_DisableScheduler and decrements by one with OS_EnableScheduler. In addition, if it is larger than 0, this prevents rescheduling. The return value from this function is the value after the counter has changed. If it is larger than 0, it is the state that has not yet rescheduled.
A set of OS_DisableScheduler and OS_EnableScheduler as a pair can be nested. For an example see the reference for OS_DisableScheduler().
OS_SelectThread, OS_RescheduleThread, OS_DisableScheduler
2005/03/08 Standardized the Japanese term for "interrupt."
2005/01/21 Initial version.
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