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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _SCHED_H_
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#ifndef _SCHED_H_
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#define _SCHED_H_
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#define _SCHED_H_
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#include "debug.h"
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void sched_init(void);
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void sched_reset(void);
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#define SCHED_HEAP_SIZE 128
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void sched_next_insn(void (*func)(void *), void *dat);
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#define SCHED_TIME_MAX INT32_MAX
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void sched_find_remove(void (*job_func)(void *), void *dat, const char *func);
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void sched_add(void (*job_func)(void *), void *job_param, int32_t job_time,
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DECLARE_DEBUG_CHANNEL(sched);
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const char *func);
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DECLARE_DEBUG_CHANNEL(sched_jobs);
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#define SCHED_ADD(job_func, job_param, job_time) sched_add(job_func, job_param, job_time, #job_func)
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#define SCHED_FIND_REMOVE(f, p) sched_find_remove(f, p, __FUNCTION__)
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/* Structure for holding one job entry */
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/* Structure for holding one job entry */
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struct sched_entry {
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struct sched_entry {
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int32_t time; /* Clock cycles before job starts */
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int32_t time; /* Clock cycles before job starts */
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void *param; /* Parameter to pass to the function */
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void *param; /* Parameter to pass to the function */
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struct scheduler_struct {
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struct scheduler_struct {
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struct sched_entry *free_job_queue;
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struct sched_entry *free_job_queue;
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struct sched_entry *job_queue;
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struct sched_entry *job_queue;
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};
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};
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void sched_init(void);
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void sched_reset(void);
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void sched_next_insn(void (*func)(void *), void *dat);
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extern struct scheduler_struct scheduler;
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extern struct scheduler_struct scheduler;
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static inline void sched_print_jobs(void)
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{
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struct sched_entry *cur;
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int i;
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for (cur = scheduler.job_queue, i = 0; cur; cur = cur->next, i++)
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TRACE_(sched)("\t%i: %p $%p @ %"PRIi32"\n", i, cur->func, cur->param,
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cur->time);
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}
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/* Adds new job to the queue */
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static inline void sched_add(void (*job_func)(void *), void *job_param,
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int32_t job_time, const char *func)
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{
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struct sched_entry *cur, *prev, *new_job;
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int32_t alltime;
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TRACE_(sched)("%s@%lli:SCHED_ADD(time %"PRIi32")\n", func, runtime.sim.cycles,
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job_time);
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if(TRACE_ON(sched_jobs))
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sched_print_jobs();
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if(TRACE_ON(sched_jobs))
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TRACE_(sched) ("--------\n");
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cur = scheduler.job_queue;
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prev = NULL;
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alltime = cur->time;
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while(cur && (alltime < job_time)) {
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prev = cur;
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cur = cur->next;
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if(cur)
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alltime += cur->time;
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}
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new_job = scheduler.free_job_queue;
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scheduler.free_job_queue = new_job->next;
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new_job->next = cur;
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new_job->func = job_func;
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new_job->param = job_param;
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if(prev) {
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new_job->time = job_time - (alltime - (cur ? cur->time : 0));
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prev->next = new_job;
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TRACE_(sched)("Scheduled job not going to head of queue, relative time: %"
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PRIi32"\n", new_job->time);
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} else {
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scheduler.job_queue = new_job;
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new_job->time = job_time >= 0 ? job_time : cur->time;
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TRACE_(sched)("Setting to-go cycles to %"PRIi32" at %lli\n", job_time,
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runtime.sim.cycles);
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}
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if(cur)
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cur->time -= new_job->time;
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if(TRACE_ON(sched_jobs))
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sched_print_jobs();
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}
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#define SCHED_ADD(job_func, job_param, job_time) sched_add(job_func, job_param, job_time, __FUNCTION__)
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/* Returns a job with specified function and param, NULL if not found */
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static inline void sched_find_remove(void (*job_func)(void *), void *dat,
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const char *func)
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{
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struct sched_entry *cur;
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struct sched_entry *prev = NULL;
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TRACE_(sched)("%s@%lli:SCHED_REMOVE()\n", func, runtime.sim.cycles);
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for (cur = scheduler.job_queue; cur; prev = cur, cur = cur->next) {
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if ((cur->func == job_func) && (cur->param == dat)) {
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if(cur->next)
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cur->next->time += cur->time;
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if(prev) {
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prev->next = cur->next;
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} else {
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scheduler.job_queue = cur->next;
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if(cur->next)
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TRACE_(sched)("Setting to-go cycles to %"PRIi32" at %lli\n",
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cur->next->time, runtime.sim.cycles);
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}
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cur->next = scheduler.free_job_queue;
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scheduler.free_job_queue = cur;
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break;
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}
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}
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}
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/* Deletes job with specified function and param */
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#define SCHED_FIND_REMOVE(f, p) sched_find_remove(f, p, __FUNCTION__)
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/* If we are not running with dynamic execution, then do_scheduler will be
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/* If we are not running with dynamic execution, then do_scheduler will be
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* inlined and this declaration will be useless (it will also fail to compile)*/
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* inlined and this declaration will be useless (it will also fail to compile)*/
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#if DYNAMIC_EXECUTION
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#if DYNAMIC_EXECUTION
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void do_scheduler (void);
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void do_scheduler (void);
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