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a82e949c00
Avoid using linker magic to define the init, task, and shutdown functions. Instead, use the compile_time_request system. This simplifies the build and produces more efficient code. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#ifndef __SCHED_H
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#define __SCHED_H
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#include <stdint.h> // uint32_t
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#include "ctr.h" // DECL_CTR
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// Declare an init function (called at firmware startup)
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#define DECL_INIT(FUNC) _DECL_CALLLIST(ctr_run_initfuncs, FUNC)
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// Declare a task function (called periodically during normal runtime)
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#define DECL_TASK(FUNC) _DECL_CALLLIST(ctr_run_taskfuncs, FUNC)
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// Declare a shutdown function (called on an emergency stop)
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#define DECL_SHUTDOWN(FUNC) _DECL_CALLLIST(ctr_run_shutdownfuncs, FUNC)
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// Timer structure for scheduling timed events (see sched_add_timer() )
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struct timer {
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struct timer *next;
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uint_fast8_t (*func)(struct timer*);
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uint32_t waketime;
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};
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enum { SF_DONE=0, SF_RESCHEDULE=1 };
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// sched.c
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uint8_t sched_check_periodic(uint16_t time, uint16_t *pnext);
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void sched_add_timer(struct timer*);
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void sched_del_timer(struct timer *del);
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unsigned int sched_timer_dispatch(void);
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uint8_t sched_is_shutdown(void);
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void sched_clear_shutdown(void);
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void sched_try_shutdown(uint_fast8_t reason);
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void sched_shutdown(uint_fast8_t reason) __noreturn;
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void sched_report_shutdown(void);
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void sched_main(void);
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// Compiler glue for DECL_X macros above.
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#define _DECL_CALLLIST(NAME, FUNC) \
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DECL_CTR("_DECL_CALLLIST " __stringify(NAME) " " __stringify(FUNC))
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#endif // sched.h
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