HelenOSHelenOS-docHelenOS-historic

Català-Valencià – Catalan中文 – Chinese (Simplified)中文 – Chinese (Traditional)Česky – CzechDansk – DanishNederlands – DutchEnglish – EnglishSuomi – FinnishFrançais – FrenchDeutsch – Germanעברית – Hebrewहिंदी – HindiMagyar – HungarianBahasa Indonesia – IndonesianItaliano – Italian日本語 – Japanese한국어 – KoreanМакедонски – Macedonianमराठी – MarathiNorsk – NorwegianPolski – PolishPortuguês – PortuguesePortuguês – Portuguese (Brazil)Русский – RussianSlovenčina – SlovakSlovenščina – SlovenianEspañol – SpanishSvenska – SwedishTürkçe – TurkishУкраїнська – UkrainianOëzbekcha – Uzbek

Compare Revisions

• This comparison shows the changes necessary to convert path

  → /trunk/kernel/generic/src/synch/ @ 1887

  → /trunk/kernel/generic/src/synch/ @ 1888

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1887 → Rev 1888

/trunk/kernel/generic/src/synch/rwlock.c
206,35 → 206,35
rc = _mutex_lock_timeout(&rwl->exclusive, usec, flags);
switch (rc) {
case ESYNCH_WOULD_BLOCK:
/*
* release_spinlock() wasn't called
*/
thread_register_call_me(NULL, NULL);
spinlock_unlock(&rwl->lock);
case ESYNCH_TIMEOUT:
case ESYNCH_INTERRUPTED:
/*
* The sleep timed out.
* We just restore interrupt priority level.
*/
case ESYNCH_OK_BLOCKED:
/*
* We were woken with rwl->readers_in already incremented.
* Note that this arrangement avoids race condition between
* two concurrent readers. (Race is avoided if 'exclusive' is
* locked at the same time as 'readers_in' is incremented.
* Same time means both events happen atomically when
* rwl->lock is held.)
*/
interrupts_restore(ipl);
break;
case ESYNCH_OK_ATOMIC:
panic("_mutex_lock_timeout()==ESYNCH_OK_ATOMIC\n");
break;
default:
panic("invalid ESYNCH\n");
break;
case ESYNCH_WOULD_BLOCK:
/*
* release_spinlock() wasn't called
*/
thread_register_call_me(NULL, NULL);
spinlock_unlock(&rwl->lock);
case ESYNCH_TIMEOUT:
case ESYNCH_INTERRUPTED:
/*
* The sleep timed out.
* We just restore interrupt priority level.
*/
case ESYNCH_OK_BLOCKED:
/*
* We were woken with rwl->readers_in already incremented.
* Note that this arrangement avoids race condition between
* two concurrent readers. (Race is avoided if 'exclusive' is
* locked at the same time as 'readers_in' is incremented.
* Same time means both events happen atomically when
* rwl->lock is held.)
*/
interrupts_restore(ipl);
break;
case ESYNCH_OK_ATOMIC:
panic("_mutex_lock_timeout()==ESYNCH_OK_ATOMIC\n");
break;
default:
panic("invalid ESYNCH\n");
break;
}
return rc;
}