forked from Imagelibrary/rtems
7ee5931393
The aim of this clock driver hook was to stop clock tick interrupts at some late point in the exit() procedure. The use of atexit() pulls in malloc() which pulls in errno. It is incompatible with the intention of the CONFIGURE_DISABLE_NEWLIB_REENTRANCY configuration option. The exit() function must be called from thread context, so accompanied clock tick interrupts should cause no harm. On the contrary, someone may assume a normal operating system operation, e.g. working timeouts. Remove the Clock_driver_support_shutdown_hardware() clock driver hook. Close #3436.
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Instantiate the clock driver shell.
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*
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* Since there is no clock source on the simulator, we fake
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* it with a special IDLE task.
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*/
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#include <rtems.h>
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#include <rtems/score/percpu.h>
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#include <rtems/score/threaddispatch.h>
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#define CLOCK_VECTOR 0
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#define Clock_driver_support_initialize_hardware() \
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do { } while (0)
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#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER
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#include "clockimpl.h"
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/*
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* If this is defined, then the BSP has defined a delay of some sort so
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* time passage appears somewhat correctly. Otherwise, it runs extremely
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* fast with no delays.
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*/
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#ifndef BSP_CLOCK_DRIVER_DELAY
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#define BSP_CLOCK_DRIVER_DELAY()
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#endif
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/*
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* Since there is no interrupt on this simulator, let's just
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* fake time passing. This will not let preemption from an
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* interrupt work but is enough for many tests.
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*/
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void *clock_driver_sim_idle_body(
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uintptr_t ignored
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)
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{
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for( ; ; ) {
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Per_CPU_Control *cpu = _Thread_Dispatch_disable();
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_ISR_Nest_level++;
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rtems_clock_tick();
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_ISR_Nest_level--;
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_Thread_Dispatch_enable( cpu );
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BSP_CLOCK_DRIVER_DELAY();
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}
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return 0; /* to avoid warning */
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}
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