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rework memory block management to be thread-safe and mostly lock-free.

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pa_memblock is now an opaque structure. Access to its fields is now done
through various accessor functions in a thread-safe manner.

pa_memblock_acquire() and pa_memblock_release() are now used to access the
attached audio data. Why? To allow safe manipulation of the memory pointer
maintained by the memory block. Internally _acquire() and _release() maintain a
reference counter. Please do not confuse this reference counter whith the one
maintained by pa_memblock_ref()/_unref()!

As a side effect this patch removes all direct usages of AO_t and replaces it
with pa_atomic_xxx based code.

This stuff needs some serious testing love. Especially if threads are actively
used.



git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1404 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2006-09-26 23:50:56 +00:00
parent 5ad143b3ab
commit d210ebbb09
36 changed files with 991 additions and 500 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/Makefile.am
View file

@ -268,8 +268,7 @@ thread_test_CFLAGS = $(AM_CFLAGS)
thread_test_LDADD = $(AM_LDADD) libpulsecore.la
thread_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
flist_test_SOURCES = tests/flist-test.c \
pulsecore/flist.c pulsecore/flist.h
flist_test_SOURCES = tests/flist-test.c
flist_test_CFLAGS = $(AM_CFLAGS)
flist_test_LDADD = $(AM_LDADD) libpulsecore.la
flist_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
@ -448,6 +447,8 @@ libpulse_la_SOURCES += \
pulsecore/core-error.c pulsecore/core-error.h \
pulsecore/winsock.h pulsecore/creds.h \
pulsecore/shm.c pulsecore/shm.h \
pulsecore/flist.c pulsecore/flist.h \
pulsecore/anotify.c pulsecore/anotify.h \
$(PA_THREAD_OBJS)
if OS_IS_WIN32
@ -628,6 +629,8 @@ libpulsecore_la_SOURCES += \
pulsecore/core-error.c pulsecore/core-error.h \
pulsecore/hook-list.c pulsecore/hook-list.h \
pulsecore/shm.c pulsecore/shm.h \
pulsecore/flist.c pulsecore/flist.h \
pulsecore/anotify.c pulsecore/anotify.h \
$(PA_THREAD_OBJS)
if OS_IS_WIN32