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Emilio Cota e3feb2cc22 util: import GTree as QTree 
The only reason to add this implementation is to control the memory allocator
used. Some users (e.g. TCG) cannot work reliably in multi-threaded
environments (e.g. forking in user-mode) with GTree's allocator, GSlice.
See https://gitlab.com/qemu-project/qemu/-/issues/285 for details.

Importing GTree is a temporary workaround until GTree migrates away
from GSlice.

This implementation is identical to that in glib v2.75.0, except that
we don't import recent additions to the API nor deprecated API calls,
none of which are used in QEMU.

I've imported tests from glib and added a benchmark just to
make sure that performance is similar. Note: it cannot be identical
because (1) we are not using GSlice, (2) we use different compilation flags
(e.g. -fPIC) and (3) we're linking statically.

$ cat /proc/cpuinfo| grep 'model name' | head -1
model name      : AMD Ryzen 7 PRO 5850U with Radeon Graphics
$ echo '0' | sudo tee /sys/devices/system/cpu/cpufreq/boost
$ tests/bench/qtree-bench

 Tree         Op      32            1024            4096          131072         1048576
------------------------------------------------------------------------------------------------
GTree     Lookup   83.23           43.08           25.31           19.40           16.22
QTree     Lookup  113.42 (1.36x)   53.83 (1.25x)   28.38 (1.12x)   17.64 (0.91x)   13.04 (0.80x)
GTree     Insert   44.23           29.37           25.83           19.49           17.03
QTree     Insert   46.87 (1.06x)   25.62 (0.87x)   24.29 (0.94x)   16.83 (0.86x)   12.97 (0.76x)
GTree     Remove   53.27           35.15           31.43           24.64           16.70
QTree     Remove   57.32 (1.08x)   41.76 (1.19x)   38.37 (1.22x)   29.30 (1.19x)   15.07 (0.90x)
GTree  RemoveAll  135.44          127.52          126.72          120.11           64.34
QTree  RemoveAll  127.15 (0.94x)  110.37 (0.87x)  107.97 (0.85x)   97.13 (0.81x)   55.10 (0.86x)
GTree   Traverse  277.71          276.09          272.78          246.72           98.47
QTree   Traverse  370.33 (1.33x)  411.97 (1.49x)  400.23 (1.47x)  262.82 (1.07x)   78.52 (0.80x)
------------------------------------------------------------------------------------------------

As a sanity check, the same benchmark when Glib's version
is >= $glib_dropped_gslice_version (i.e. QTree == GTree):

 Tree         Op      32            1024            4096          131072         1048576
------------------------------------------------------------------------------------------------
GTree     Lookup   82.72           43.09           24.18           19.73           16.09
QTree     Lookup   81.82 (0.99x)   43.10 (1.00x)   24.20 (1.00x)   19.76 (1.00x)   16.26 (1.01x)
GTree     Insert   45.07           29.62           26.34           19.90           17.18
QTree     Insert   45.72 (1.01x)   29.60 (1.00x)   26.38 (1.00x)   19.71 (0.99x)   17.20 (1.00x)
GTree     Remove   54.48           35.36           31.77           24.97           16.95
QTree     Remove   54.46 (1.00x)   35.32 (1.00x)   31.77 (1.00x)   24.91 (1.00x)   17.15 (1.01x)
GTree  RemoveAll  140.68          127.36          125.43          121.45           68.20
QTree  RemoveAll  140.65 (1.00x)  127.64 (1.00x)  125.01 (1.00x)  121.73 (1.00x)   67.06 (0.98x)
GTree   Traverse  278.68          276.05          266.75          251.65          104.93
QTree   Traverse  278.31 (1.00x)  275.78 (1.00x)  266.42 (1.00x)  247.89 (0.99x)  104.58 (1.00x)
------------------------------------------------------------------------------------------------

Signed-off-by: Emilio Cota <cota@braap.org>
Message-Id: <20230205163758.416992-2-cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-28 15:23:10 -07:00
..
check-block-qdict.c tests: unit: add NULL-pointer check 2022-09-18 09:17:41 +02:00
check-qdict.c
check-qjson.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
check-qlist.c
check-qlit.c
check-qnull.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
check-qnum.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
check-qobject.c tests: remove block/qdict checks from check-qobject.c 2022-04-21 17:03:51 +04:00
check-qom-interface.c
check-qom-proplist.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
check-qstring.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
crypto-tls-psk-helpers.c tests: avoid DOS line endings in PSK file 2022-10-27 11:55:41 +01:00
crypto-tls-psk-helpers.h tests: add migration tests of TLS with PSK credentials 2022-05-16 11:46:04 +01:00
crypto-tls-x509-helpers.c tests: fix encoding of IP addresses in x509 certs 2022-05-16 11:46:04 +01:00
crypto-tls-x509-helpers.h tests: add more helper macros for creating TLS x509 certs 2022-05-16 11:46:04 +01:00
io-channel-helpers.c tests/channel-helper: set blocking in main thread 2022-10-12 19:22:01 +04:00
io-channel-helpers.h
iothread.c async: the main AioContext is only "current" if under the BQL 2021-06-18 10:59:52 -05:00
iothread.h
meson.build util: import GTree as QTree 2023-03-28 15:23:10 -07:00
pkix_asn1_tab.c tests: remove QCRYPTO_HAVE_TLS_TEST_SUPPORT 2021-06-25 10:53:46 +02:00
ptimer-test-stubs.c replay: Extract core API to 'exec/replay-core.h' 2023-02-27 22:29:01 +01:00
ptimer-test.c tests/unit: Replace g_memdup() by g_memdup2() 2022-07-18 20:24:36 +02:00
ptimer-test.h
rcutorture.c Updated the FSF address to <https://www.gnu.org/licenses/> 2023-02-27 09:15:39 +01:00
socket-helpers.c win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
socket-helpers.h tests/unit: Update test-io-channel-socket.c for Windows 2022-09-02 15:54:47 +04:00
test-aio-multithread.c
test-aio.c coroutine: Split qemu/coroutine-core.h off qemu/coroutine.h 2023-01-20 07:21:46 +01:00
test-authz-list.c
test-authz-listfile.c
test-authz-pam.c
test-authz-simple.c
test-base64.c
test-bdrv-drain.c block: Mark public read/write functions GRAPH_RDLOCK 2023-02-23 19:49:17 +01:00
test-bdrv-graph-mod.c test-bdrv-graph-mod: fix filters to be filters 2022-10-27 20:14:11 +02:00
test-bitcnt.c
test-bitmap.c
test-bitops.c
test-block-backend.c
test-block-iothread.c block: Mark bdrv_co_block_status() and callers GRAPH_RDLOCK 2023-02-23 19:49:07 +01:00
test-blockjob-txn.c jobs: use job locks also in the unit tests 2022-10-07 12:11:41 +02:00
test-blockjob.c tests/unit/test-blockjob: Disable complete_in_standby test 2023-03-20 12:43:50 +01:00
test-bufferiszero.c
test-char.c qapi chardev: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
test-clone-visitor.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
test-coroutine.c coroutine: Clean up superfluous inclusion of qemu/lockable.h 2023-01-19 10:18:28 +01:00
test-crypto-afsplit.c
test-crypto-akcipher.c tests/crypto: Add test suite for RSA keys 2022-05-26 11:41:56 +01:00
test-crypto-block.c qapi crypto: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
test-crypto-cipher.c crypto: replace 'des-rfb' cipher with 'des' 2021-07-14 14:15:52 +01:00
test-crypto-der.c crypto: Support DER encodings 2022-11-02 06:56:32 -04:00
test-crypto-hash.c crypto: use &error_fatal in crypto tests 2021-07-14 14:15:52 +01:00
test-crypto-hmac.c crypto: use &error_fatal in crypto tests 2021-07-14 14:15:52 +01:00
test-crypto-ivgen.c crypto: skip essiv ivgen tests if AES+ECB isn't available 2021-07-14 14:15:52 +01:00
test-crypto-pbkdf.c crypto: remove obsolete crypto test condition 2021-07-14 14:15:52 +01:00
test-crypto-secret.c
test-crypto-tlscredsx509.c tests: Use g_mkdir_with_parents() 2022-08-25 15:24:09 +02:00
test-crypto-tlssession.c Call qemu_socketpair() instead of socketpair() when possible 2023-01-16 17:42:17 +01:00
test-crypto-xts.c
test-cutils.c Drop duplicate #include 2023-02-08 07:28:05 +01:00
test-div128.c host-utils: add unit tests for divu128/divs128 2021-10-27 17:10:00 -07:00
test-error-report.c error: add global &error_warn destination 2023-03-13 15:23:37 +04:00
test-fdmon-epoll.c aio-posix: split poll check from ready handler 2022-01-12 17:09:39 +00:00
test-forward-visitor.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
test-hbitmap.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
test-image-locking.c tests/unit/test-image-locking: Fix handling of temporary files 2022-10-12 12:48:53 +02:00
test-int128.c qemu/int128: add int128_urshift 2022-04-20 18:00:30 -03:00
test-interval-tree.c util: Add interval-tree.c 2022-12-20 17:09:41 -08:00
test-io-channel-buffer.c
test-io-channel-command.c tests: fix path separator, use g_build_filename() 2023-03-13 15:39:31 +04:00
test-io-channel-file.c tests: replace pipe() with g_unix_open_pipe(CLOEXEC) 2022-05-03 15:46:08 +04:00
test-io-channel-null.c io: add a QIOChannelNull equivalent to /dev/null 2022-06-22 18:11:21 +01:00
test-io-channel-socket.c io: Add support for MSG_PEEK for socket channel 2023-02-06 19:22:56 +01:00
test-io-channel-tls.c Call qemu_socketpair() instead of socketpair() when possible 2023-01-16 17:42:17 +01:00
test-io-task.c
test-iov.c tests/unit: Replace g_memdup() by g_memdup2() 2022-07-18 20:24:36 +02:00
test-keyval.c include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
test-logging.c util/log: Remove qemu_log_close 2022-04-20 10:51:11 -07:00
test-mul64.c
test-opts-visitor.c
test-qapi-util.c
test-qdev-global-props.c
test-qdist.c
test-qemu-opts.c qemu-option: remove now-dead code 2021-07-06 08:33:51 +02:00
test-qga.c tests/unit: test-qga: Avoid using hardcoded /tmp 2022-09-27 20:51:20 +02:00
test-qgraph.c tests: Remove uses of deprecated raspi2/raspi3 machine names 2021-09-01 11:08:15 +01:00
test-qht.c
test-qmp-cmds.c tests: add G_GNUC_PRINTF for various functions 2023-01-11 10:44:34 +01:00
test-qmp-event.c qapi tests: Elide redundant has_FOO in generated C 2022-12-13 18:31:37 +01:00
test-qobject-input-visitor.c qapi tests: Elide redundant has_FOO in generated C 2022-12-13 18:31:37 +01:00
test-qobject-output-visitor.c qapi tests: Elide redundant has_FOO in generated C 2022-12-13 18:31:37 +01:00
test-qtree.c util: import GTree as QTree 2023-03-28 15:23:10 -07:00
test-rcu-list.c replace TABs with spaces 2023-03-20 12:43:50 +01:00
test-rcu-simpleq.c
test-rcu-slist.c
test-rcu-tailq.c
test-replication.c replication: move include out of root directory 2021-05-26 14:49:46 +02:00
test-seccomp.c Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
test-shift128.c
test-smp-parse.c tests/unit/test-smp-parse: Keep default MIN/MAX CPUs in machine_base_class_init 2021-12-31 13:42:48 +01:00
test-string-input-visitor.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
test-string-output-visitor.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
test-thread-pool.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
test-throttle.c
test-timed-average.c
test-util-filemonitor.c
test-util-sockets.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
test-uuid.c
test-visitor-serialization.c qapi tests: Elide redundant has_FOO in generated C 2022-12-13 18:31:37 +01:00
test-vmstate.c test-vmstate: fix bad GTree usage, use-after-free 2023-03-02 17:06:27 +01:00
test-write-threshold.c write-threshold: deal with includes 2021-05-14 16:14:10 +02:00
test-x86-cpuid.c
test-xbzrle.c Update bench-code for addressing CI problem 2023-02-11 16:51:09 +01:00
test-xs-node.c hw/xen: Add foreignmem operations to allow redirection to internal emulation 2023-03-07 17:04:30 +00:00
test-yank.c qapi: Convert simple union SocketAddressLegacy to flat one 2021-09-27 08:23:25 +02:00