Date: Sun, 25 May 2003 00:58:22 -0700 (PDT) From: Mike Makonnen <mtm@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libthr/thread thr_kern.c thr_private.h Message-ID: <200305250758.h4P7wMlf053529@repoman.freebsd.org>
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mtm 2003/05/25 00:58:22 PDT
FreeBSD src repository
Modified files:
lib/libthr/thread thr_kern.c thr_private.h
Log:
The libthr code makes use of higher-level primitives (pthread_mutex_t and
pthread_cond_t) internaly in addition to the low-level spinlock_t. The
garbage collector mutex and condition variable are two such examples. This
might lead to critical sections nested within critical sections. Implement
a reference counting mechanism so that signals are masked only on the first
entry and unmasked on the last exit.
I'm not sure I like the idea of nested critical sections, but if
the library is going to use the pthread primitives it might be necessary.
Approved by: re/blanket libthr
Revision Changes Path
1.8 +13 -0 src/lib/libthr/thread/thr_kern.c
1.10 +1 -0 src/lib/libthr/thread/thr_private.h
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