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* DevNotes: Add entry cgf-000014.

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* cygheap.cc (tls_sentry): Move here, rename from 'sentry' in cygtls.cc
(tls_sentry::lock): Ditto.
(nthreads): Move from cygtls.cc
(THREADLIST_CHUNK): Ditto.
(cygheap_init): Call init_tls_list().
(init_cygheap::init_tls_list): Define new function.
(init_cygheap::add_tls): Ditto.
(init_cygheap::remove_tls): Ditto.
(init_cygheap::find_tls): Ditto.  Semi-resurrect from _cygtls::find_tls.
* cygheap.h (init_cygheap::init_tls_list): Declare new function.
(init_cygheap::add_tls): Ditto.
(init_cygheap::remove_tls): Ditto.
(init_cygheap::find_tls): Ditto.
* cygtls.cc (sentry): Delete.
(sentry::lock): Ditto.
(nthreads): Ditto.
(THREADLIST_CHUNK): Ditto.
(_cygtls::init): Delete definition.
(_cygtls::init_thread): Call cygheap->add_tls() to add thread to global list.
(_cygtls::remove): cygheap->remove_tls() to remove thread from global list.
* cygtls.h (_cygtls::init): Delete declaration.
* dcrt0.cc (dll_crt0_0): Delete call to _cygtls::init().
* exceptions.cc (sigpacket::process): When no thread is specified, try to find
one via cygheap->find_tls.
This commit is contained in:
Christopher Faylor
2012-08-09 19:58:53 +00:00
parent cc02df1286
commit 52d2371da5
9 changed files with 153 additions and 67 deletions
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13
winsup/cygwin/DevNotes
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@ -1,3 +1,16 @@
2012-08-09 cgf-000014
So, apparently I got it somewhat right before wrt signal handling.
Checking on linux, it appears that signals will be sent to a thread
which can accept the signal. So resurrecting and extending the
"find_tls" function is in order. This function will return the tls
of any thread which 1) is waiting for a signal with sigwait*() or
2) has the signal unmasked.
In redoing this it became obvious that I had the class designation wrong
for the threadlist handling so I moved the manipulation of the global
threadlist into the cygheap where it logically belongs.
2012-07-21 cgf-000013
These changes reflect a revamp of the "wait for signal" functionality