this patch series aims to save memory allocations and some system calls
related to PA's client/server protocol implementation
patches 1 to 5 ('tagstruct:') introduce a new tagstruct type _APPENDED
which can hold tagstruct data up to a certain size; tagstructs are now
kept in a specific free-list -- this typically replaces two malloc()/free()s
with one flist push()/pop()
patches 6 to 8 ('packet:') make packets fixed-size (typically); packets are
kept in a specific free-list -- this replaces one malloc()/free() with one
flist push()/pop()
patches 9 to 14 ('pstream:') allows to send tagstructs directly to a pstream
without encapsulation in a packet -- this saves one flist push()/pop()
patches 15 and 16 ('pstream') often save a read() call by reading more than
just the descriptor (up to 40 bytes, e.g. description (20 bytes) + shm
info (16 bytes)); the idea is similar to b4342845d, "Optimize write
of smaller packages", but for read -- this trades some extra memcpy() for
a read()
patch 17 ('iochannel') fixes a strange behaviour in iochannel/mainloop that
deleted the input_event with every read which caused a rebuild of the pollfds
for every read()!
with these patches typical playback (i.e. after setup) runs without any malloc()/free()
thanks to the use of free-lists; number of memory management operations is reduced
no benchmarking yet
Peter Meerwald (17):
tagstruct: Distinguish pa_tagstruct_new() use cases
tagstruct: Replace dynamic flag with type
tagstruct: Get rid of pa_tagstruct_free_data()
tagstruct: Add type _APPENDED
tagstruct: Use flist to potentially save calls to malloc()/free()
packet: Hide internals of pa_packet, introduce pa_packet_data()
packet: Make pa_packet_new() create fixed-size packets
packet: Introduce pa_packet_new_data() to copy data into a newly
created packet
packet: Use flist to save calls to malloc()/free()
pstream: Unionize item_info
pstream: Add pa_pstream_send_tagstruct()
pstream: #define PA_PSTREAM_SHM_SIZE
pstream: Duplicate assignment, write.data is always NULL
pstream: Only reset memchunk if it has been used
pstream: Split up do_read()
pstream: Use small minibuffer to combine several read()s if possible
iochannel: Fix channel enable
src/modules/module-card-restore.c | 4 +-
src/modules/module-device-manager.c | 12 +-
src/modules/module-device-restore.c | 16 +-
src/modules/module-stream-restore.c | 12 +-
src/modules/module-tunnel.c | 52 +--
src/pulse/context.c | 26 +-
src/pulse/ext-device-manager.c | 14 +-
src/pulse/ext-device-restore.c | 10 +-
src/pulse/ext-stream-restore.c | 10 +-
src/pulse/introspect.c | 82 ++---
src/pulse/scache.c | 10 +-
src/pulse/stream.c | 22 +-
src/pulse/subscribe.c | 2 +-
src/pulsecore/iochannel.c | 35 +-
src/pulsecore/packet.c | 53 ++-
src/pulsecore/packet.h | 20 +-
src/pulsecore/pdispatch.c | 9 +-
src/pulsecore/protocol-native.c | 94 +++---
src/pulsecore/pstream-util.c | 33 +-
src/pulsecore/pstream-util.h | 2 -
src/pulsecore/pstream.c | 635 +++++++++++++++++++++---------------
src/pulsecore/pstream.h | 2 +
src/pulsecore/tagstruct.c | 66 ++--
src/pulsecore/tagstruct.h | 4 +-
src/tests/srbchannel-test.c | 21 +-
25 files changed, 704 insertions(+), 542 deletions(-)
--
1.9.1
