Mercurial > hg > Members > innparusu > xv6-rpi
comparison src/proc.c @ 28:68de775c3a29
add cbc_sched
| author | mir3636 |
|---|---|
| date | Fri, 18 Jan 2019 09:40:22 +0900 |
| parents | 36bd61f5c847 |
| children | 96af12a50fdb |
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| 27:1a64b5645cdd | 28:68de775c3a29 |
|---|---|
| 351 | 351 |
| 352 release(&ptable.lock); | 352 release(&ptable.lock); |
| 353 } | 353 } |
| 354 } | 354 } |
| 355 | 355 |
| 356 __code cbc_sched(__code(*next)()) | |
| 357 { | |
| 358 int intena; | |
| 359 | |
| 360 if(!holding(&ptable.lock)) { | |
| 361 panic("sched ptable.lock"); | |
| 362 } | |
| 363 | |
| 364 if(cpu->ncli != 1) { | |
| 365 panic("sched locks"); | |
| 366 } | |
| 367 | |
| 368 if(proc->state == RUNNING) { | |
| 369 panic("sched running"); | |
| 370 } | |
| 371 | |
| 372 if(int_enabled ()) { | |
| 373 panic("sched interruptible"); | |
| 374 } | |
| 375 | |
| 376 intena = cpu->intena; | |
| 377 swtch(&proc->context, cpu->scheduler); | |
| 378 cpu->intena = intena; | |
| 379 | |
| 380 goto next(); | |
| 381 } | |
| 382 | |
| 383 | |
| 356 // Enter scheduler. Must hold only ptable.lock | 384 // Enter scheduler. Must hold only ptable.lock |
| 357 // and have changed proc->state. | 385 // and have changed proc->state. |
| 358 void sched(void) | 386 void sched(void) |
| 359 { | 387 { |
| 360 int intena; | 388 int intena; |