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ST: Refine switch context.

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winlin 2024-08-22 11:32:12 +08:00
parent ff6a608099
commit 55610cf689
2 changed files with 42 additions and 46 deletions
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70
trunk/3rdparty/st-srs/common.h vendored
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@ -310,6 +310,32 @@ extern __thread _st_eventsys_t *_st_eventsys;
#endif
/*****************************************
* Forward declarations
*/
void _st_vp_schedule(void);
void _st_vp_check_clock(void);
void *_st_idle_thread_start(void *arg);
void _st_thread_main(void);
void _st_thread_cleanup(_st_thread_t *thread);
void _st_add_sleep_q(_st_thread_t *thread, st_utime_t timeout);
void _st_del_sleep_q(_st_thread_t *thread);
_st_stack_t *_st_stack_new(int stack_size);
void _st_stack_free(_st_stack_t *ts);
int _st_io_init(void);
st_utime_t st_utime(void);
_st_cond_t *st_cond_new(void);
int st_cond_destroy(_st_cond_t *cvar);
int st_cond_timedwait(_st_cond_t *cvar, st_utime_t timeout);
int st_cond_signal(_st_cond_t *cvar);
ssize_t st_read(_st_netfd_t *fd, void *buf, size_t nbyte, st_utime_t timeout);
ssize_t st_write(_st_netfd_t *fd, const void *buf, size_t nbyte, st_utime_t timeout);
int st_poll(struct pollfd *pds, int npds, st_utime_t timeout);
_st_thread_t *st_thread_create(void *(*start)(void *arg), void *arg, int joinable, int stk_size);
/*****************************************
* Threads context switching
*/
@ -343,45 +369,33 @@ extern __thread _st_eventsys_t *_st_eventsys;
* Switch away from the current thread context by saving its state and
* calling the thread scheduler
*/
void _st_switch_context(_st_thread_t *thread);
static inline void _st_switch_context(_st_thread_t *thread)
{
ST_SWITCH_OUT_CB(thread);
if (!_st_md_cxt_save(thread->context)) {
_st_vp_schedule();
}
ST_DEBUG_ITERATE_THREADS();
ST_SWITCH_IN_CB(thread);
}
/*
* Restore a thread context that was saved by _st_switch_context or
* initialized by _ST_INIT_CONTEXT
*/
void _st_restore_context(_st_thread_t *thread);
static inline void _st_restore_context(_st_thread_t *thread)
{
_st_this_thread = thread;
_st_md_cxt_restore(thread->context, 1);
}
/*
* Number of bytes reserved under the stack "bottom"
*/
#define _ST_STACK_PAD_SIZE 128
/*****************************************
* Forward declarations
*/
void _st_vp_schedule(void);
void _st_vp_check_clock(void);
void *_st_idle_thread_start(void *arg);
void _st_thread_main(void);
void _st_thread_cleanup(_st_thread_t *thread);
void _st_add_sleep_q(_st_thread_t *thread, st_utime_t timeout);
void _st_del_sleep_q(_st_thread_t *thread);
_st_stack_t *_st_stack_new(int stack_size);
void _st_stack_free(_st_stack_t *ts);
int _st_io_init(void);
st_utime_t st_utime(void);
_st_cond_t *st_cond_new(void);
int st_cond_destroy(_st_cond_t *cvar);
int st_cond_timedwait(_st_cond_t *cvar, st_utime_t timeout);
int st_cond_signal(_st_cond_t *cvar);
ssize_t st_read(_st_netfd_t *fd, void *buf, size_t nbyte, st_utime_t timeout);
ssize_t st_write(_st_netfd_t *fd, const void *buf, size_t nbyte, st_utime_t timeout);
int st_poll(struct pollfd *pds, int npds, st_utime_t timeout);
_st_thread_t *st_thread_create(void *(*start)(void *arg), void *arg, int joinable, int stk_size);
#ifdef __cplusplus
} /* extern "C" */
#endif