| … | |
… | |
| 56 | |
56 | |
| 57 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
57 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
| 58 | |
58 | |
| 59 | #define ETP_TICKS ((1000000 + 1023) >> 10) |
59 | #define ETP_TICKS ((1000000 + 1023) >> 10) |
| 60 | |
60 | |
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61 | enum { |
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62 | ETP_FLAG_GROUPADD = 0x04, /* some request was added to the group */ |
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63 | ETP_FLAG_DELAYED = 0x08, /* groiup request has been delayed */ |
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64 | }; |
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65 | |
| 61 | /* calculate time difference in ~1/ETP_TICKS of a second */ |
66 | /* calculate time difference in ~1/ETP_TICKS of a second */ |
| 62 | ecb_inline int |
67 | ecb_inline int |
| 63 | etp_tvdiff (struct timeval *tv1, struct timeval *tv2) |
68 | etp_tvdiff (struct timeval *tv1, struct timeval *tv2) |
| 64 | { |
69 | { |
| 65 | return (tv2->tv_sec - tv1->tv_sec ) * ETP_TICKS |
70 | return (tv2->tv_sec - tv1->tv_sec ) * ETP_TICKS |
| … | |
… | |
| 277 | done_poll_cb = done_poll; |
282 | done_poll_cb = done_poll; |
| 278 | |
283 | |
| 279 | return 0; |
284 | return 0; |
| 280 | } |
285 | } |
| 281 | |
286 | |
| 282 | /* not yet in etp.c */ |
287 | static void ecb_noinline ecb_cold |
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288 | etp_proc_init (void) |
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289 | { |
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290 | #if HAVE_PRCTL_SET_NAME |
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291 | /* provide a more sensible "thread name" */ |
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292 | char name[16 + 1]; |
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293 | const int namelen = sizeof (name) - 1; |
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294 | int len; |
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295 | |
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296 | prctl (PR_GET_NAME, (unsigned long)name, 0, 0, 0); |
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297 | name [namelen] = 0; |
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298 | len = strlen (name); |
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299 | strcpy (name + (len <= namelen - 4 ? len : namelen - 4), "/eio"); |
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300 | prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); |
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301 | #endif |
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302 | } |
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303 | |
| 283 | X_THREAD_PROC (etp_proc); |
304 | X_THREAD_PROC (etp_proc) |
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305 | { |
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306 | ETP_REQ *req; |
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307 | struct timespec ts; |
|
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308 | etp_worker *self = (etp_worker *)thr_arg; |
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309 | |
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310 | etp_proc_init (); |
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311 | |
|
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312 | /* try to distribute timeouts somewhat evenly */ |
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313 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
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314 | |
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315 | for (;;) |
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316 | { |
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317 | ts.tv_sec = 0; |
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318 | |
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319 | X_LOCK (reqlock); |
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320 | |
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321 | for (;;) |
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322 | { |
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323 | req = reqq_shift (&req_queue); |
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324 | |
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325 | if (req) |
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326 | break; |
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327 | |
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328 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
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329 | { |
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330 | X_UNLOCK (reqlock); |
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331 | X_LOCK (wrklock); |
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332 | --started; |
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333 | X_UNLOCK (wrklock); |
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334 | goto quit; |
|
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335 | } |
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336 | |
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337 | ++idle; |
|
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338 | |
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339 | if (idle <= max_idle) |
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340 | /* we are allowed to idle, so do so without any timeout */ |
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341 | X_COND_WAIT (reqwait, reqlock); |
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342 | else |
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343 | { |
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344 | /* initialise timeout once */ |
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345 | if (!ts.tv_sec) |
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346 | ts.tv_sec = time (0) + idle_timeout; |
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347 | |
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348 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
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349 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
|
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350 | } |
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351 | |
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352 | --idle; |
|
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353 | } |
|
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354 | |
|
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355 | --nready; |
|
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356 | |
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357 | X_UNLOCK (reqlock); |
|
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358 | |
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359 | if (req->type == ETP_TYPE_QUIT) |
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360 | goto quit; |
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361 | |
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362 | ETP_EXECUTE (self, req); |
|
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363 | |
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364 | X_LOCK (reslock); |
|
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365 | |
|
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366 | ++npending; |
|
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367 | |
|
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368 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
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369 | want_poll_cb (); |
|
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370 | |
|
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371 | etp_worker_clear (self); |
|
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372 | |
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373 | X_UNLOCK (reslock); |
|
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374 | } |
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375 | |
|
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376 | quit: |
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377 | free (req); |
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378 | |
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379 | X_LOCK (wrklock); |
|
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380 | etp_worker_free (self); |
|
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381 | X_UNLOCK (wrklock); |
|
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382 | |
|
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383 | return 0; |
|
|
384 | } |
| 284 | |
385 | |
| 285 | static void ecb_cold |
386 | static void ecb_cold |
| 286 | etp_start_thread (void) |
387 | etp_start_thread (void) |
| 287 | { |
388 | { |
| 288 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
389 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
| … | |
… | |
| 378 | --nreqs; |
479 | --nreqs; |
| 379 | X_UNLOCK (reqlock); |
480 | X_UNLOCK (reqlock); |
| 380 | |
481 | |
| 381 | if (ecb_expect_false (req->type == ETP_TYPE_GROUP && req->size)) |
482 | if (ecb_expect_false (req->type == ETP_TYPE_GROUP && req->size)) |
| 382 | { |
483 | { |
| 383 | req->int1 = 1; /* mark request as delayed */ |
484 | req->flags |= ETP_FLAG_DELAYED; /* mark request as delayed */ |
| 384 | continue; |
485 | continue; |
| 385 | } |
486 | } |
| 386 | else |
487 | else |
| 387 | { |
488 | { |
| 388 | int res = ETP_FINISH (req); |
489 | int res = ETP_FINISH (req); |
