mirror/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2024-11-10 18:51:46 +00:00
Code Issues Packages Projects Releases Wiki Activity
2,782 Commits 2 Branches 28 Tags 44 MiB
659ef87974
Commit Graph

302 Commits

Author SHA1 Message Date
Bartosz Taudul
bef31ba073 Separate message for zone begin with alloc src loc and callstack. 2019-03-03 18:05:03 +01:00
Bartosz Taudul
66b8a13e77 Store callstack alloc payloads. 2019-03-03 18:05:03 +01:00
Bartosz Taudul
9fc022346b Replace frame pointers with callstack frame ids. 2019-03-03 18:05:03 +01:00
Bartosz Taudul
664847211c Pack/unpack frame pointer to callstack frame id. 2019-03-03 18:05:03 +01:00
Bartosz Taudul
42c94f7142 Handle discontinuous frame end mismatch failure. 2019-02-28 19:32:42 +01:00
Bartosz Taudul
fb96d60256 Adjust last time in mem alloc/free and sys time messages. 2019-02-24 18:26:23 +01:00
Bartosz Taudul
e190faa7e1 Save/load CPU usage plot. 2019-02-21 22:56:59 +01:00
Bartosz Taudul
e9baa80bf3 Process CPU usage reports. 2019-02-21 22:56:59 +01:00
Bartosz Taudul
4422fce55c Don't decompress GpuZone threads while saving trace. 
Saving the threads compressed in GPU zones and memory event has the
following result on trace dump sizes:

043/aa.tracy (0.4.3) {10055 KB} -> 044/aa.tracy (0.4.4) {9975 KB}  99.20% size change
043/android.tracy (0.4.3) {542739 KB} -> 044/android.tracy (0.4.4) {519248 KB}  95.67% size change
043/asset-new.tracy (0.4.3) {78403 KB} -> 044/asset-new.tracy (0.4.4) {75899 KB}  96.81% size change
043/asset-new-id.tracy (0.4.3) {84341 KB} -> 044/asset-new-id.tracy (0.4.4) {81771 KB}  96.95% size change
043/asset-old.tracy (0.4.3) {80688 KB} -> 044/asset-old.tracy (0.4.4) {78410 KB}  97.18% size change
043/big.tracy (0.4.3) {939577 KB} -> 044/big.tracy (0.4.4) {938427 KB}  99.88% size change
043/callstack.tracy (0.4.3) {14557 KB} -> 044/callstack.tracy (0.4.4) {14465 KB}  99.37% size change
043/callstack-linux.tracy (0.4.3) {6949 KB} -> 044/callstack-linux.tracy (0.4.4) {6942 KB}  99.90% size change
043/crash.tracy (0.4.3) {131 KB} -> 044/crash.tracy (0.4.4) {127 KB}  97.10% size change
043/crash2.tracy (0.4.3) {1422 KB} -> 044/crash2.tracy (0.4.4) {1412 KB}  99.29% size change
043/darkrl.tracy (0.4.3) {15767 KB} -> 044/darkrl.tracy (0.4.4) {15663 KB}  99.34% size change
043/darkrl2.tracy (0.4.3) {7947 KB} -> 044/darkrl2.tracy (0.4.4) {7886 KB}  99.23% size change
043/darkrl-old.tracy (0.4.3) {67448 KB} -> 044/darkrl-old.tracy (0.4.4) {67004 KB}  99.34% size change
043/deadlock.tracy (0.4.3) {5984 KB} -> 044/deadlock.tracy (0.4.4) {5986 KB}  100.03% size change
043/gn-opengl.tracy (0.4.3) {29005 KB} -> 044/gn-opengl.tracy (0.4.4) {28885 KB}  99.59% size change
043/gn-vulkan.tracy (0.4.3) {29352 KB} -> 044/gn-vulkan.tracy (0.4.4) {29257 KB}  99.68% size change
043/long.tracy (0.4.3) {1182800 KB} -> 044/long.tracy (0.4.4) {1176584 KB}  99.47% size change
043/mem.tracy (0.4.3) {1369067 KB} -> 044/mem.tracy (0.4.4) {1262406 KB}  92.21% size change
043/multi.tracy (0.4.3) {8004 KB} -> 044/multi.tracy (0.4.4) {7944 KB}  99.24% size change
043/new.tracy (0.4.3) {1108 KB} -> 044/new.tracy (0.4.4) {1099 KB}  99.18% size change
043/q3bsp-mt.tracy (0.4.3) {949855 KB} -> 044/q3bsp-mt.tracy (0.4.4) {937574 KB}  98.71% size change
043/q3bsp-st.tracy (0.4.3) {240347 KB} -> 044/q3bsp-st.tracy (0.4.4) {230092 KB}  95.73% size change
043/selfprofile.tracy (0.4.3) {197708 KB} -> 044/selfprofile.tracy (0.4.4) {197659 KB}  99.98% size change
043/tbrowser.tracy (0.4.3) {9503 KB} -> 044/tbrowser.tracy (0.4.4) {9503 KB}  100.00% size change
043/test.tracy (0.4.3) {40700 KB} -> 044/test.tracy (0.4.4) {40699 KB}  100.00% size change
043/virtualfile_hc.tracy (0.4.3) {72424 KB} -> 044/virtualfile_hc.tracy (0.4.4) {72304 KB}  99.83% size change
043/zfile_hc.tracy (0.4.3) {39419 KB} -> 044/zfile_hc.tracy (0.4.4) {39328 KB}  99.77% size change
 2019-02-17 00:29:01 +01:00
Bartosz Taudul
760e9105d0 Don't decompress memory thread data while saving trace. 2019-02-17 00:27:41 +01:00
Bartosz Taudul
9ee494c0f4 Store thread compression layout in trace dump. 2019-02-16 22:48:29 +01:00
Bartosz Taudul
d030674b83 Simplify loading memory events. 2019-02-16 22:32:14 +01:00
Bartosz Taudul
569a9fb9be Change order of file version checks during loading memory events. 2019-02-16 22:26:50 +01:00
Bartosz Taudul
88b7961421 Allocate memory for all zones at the current level at once. 2019-02-16 20:53:07 +01:00
Bartosz Taudul
c127f51767 Load time offsets to scratch buffers. 2019-02-15 02:46:25 +01:00
Bartosz Taudul
7b023e533d Use big allocation mode for Vector's reserve_exact. 2019-02-15 01:59:33 +01:00
Bartosz Taudul
127be8e995 GpuEvent doesn't need init. 2019-02-15 01:31:58 +01:00
Bartosz Taudul
92c1420c30 Improve handling of post-load background jobs. 
Background tasks (source location zones sorting, reconstruction of
memory plot) are now started only after trace loading is finished.
Multithreaded sorting was previously impacting trace load times.

Only one thread is used to perform both jobs, one after another.
 2019-02-14 01:17:37 +01:00
Bartosz Taudul
080873003b Simplify support for 0.2 traces. 2019-02-14 01:13:11 +01:00
Bartosz Taudul
bd1c1d044b Force inline read/write time offset functions. 2019-02-14 00:17:50 +01:00
Bartosz Taudul
08642d034b Preserve string length in string map. 2019-02-12 22:11:15 +01:00
Bartosz Taudul
d32c070a9e Two more places where connection can silently drop. 2019-02-12 11:07:12 +01:00
Bartosz Taudul
7f11260bf0 Handle dropped connection during handshake. 2019-02-12 01:41:09 +01:00
Bartosz Taudul
76186f3221 Allow zone name retrieval from source location. 2019-02-10 16:45:19 +01:00
Bartosz Taudul
c7e64bb8a8 Replace select() with poll(). 2019-02-10 15:45:23 +01:00
Bartosz Taudul
e801943b90 Array index is changing here. 2019-01-31 18:37:59 +01:00
Bartosz Taudul
852fe03cbc More references. 2019-01-29 22:10:14 +01:00
Bartosz Taudul
d6c616848c Use reference instead of repeated deep dereferences. 2019-01-29 21:59:52 +01:00
Bartosz Taudul
d86e36cc62 Fix progress of loading CPU zones. 2019-01-26 22:18:07 +01:00
Bartosz Taudul
39680ad315 Boost lock loading time. 2019-01-24 22:44:09 +01:00
Bartosz Taudul
42af2d14cc Calculate self min and max times of source location zones. 2019-01-23 14:24:22 +01:00
Bartosz Taudul
ddad475c19 Make it possible to store multiple frames at single frame address. 2019-01-20 19:11:48 +01:00
Rokas Kupstys
8157e3a0b3 Fix builds with MingW. 2019-01-19 13:53:10 +02:00
Bartosz Taudul
92f3a4bba0 Add ZoneText and ZoneName to the C API. 2019-01-16 02:10:21 +01:00
Bartosz Taudul
49e270d8a6 Detect zone end without begin failure. 2019-01-16 00:45:48 +01:00
Bartosz Taudul
708fdfea49 Track memory alloc+free matching failures. 2019-01-15 18:56:26 +01:00
Bartosz Taudul
ecf9a299de Check for proper number of failure reasons. 2019-01-15 18:56:17 +01:00
Bartosz Taudul
76ab70a948 Simplify failure detection code. 2019-01-15 18:55:47 +01:00
Bartosz Taudul
9944a73444 Store failure reason strings in Worker. 2019-01-15 18:42:15 +01:00
Bartosz Taudul
ac6e7439e2 TODO: track memory allocation tracking failures. 2019-01-14 23:26:32 +01:00
Bartosz Taudul
c3246ca3b5 Gracefully store failure states. 2019-01-14 23:22:31 +01:00
Bartosz Taudul
4dc339c933 Close connection when zone validation fails. 2019-01-14 23:12:11 +01:00
Bartosz Taudul
c3b67e4482 Perform zone stack validation. 2019-01-14 23:08:34 +01:00
Bartosz Taudul
dcc6bee607 Process zone validation messages. 2019-01-14 22:56:10 +01:00
Bartosz Taudul
da8b01357d Proper skipping of locks in 0.4.1+ (fixes compare menu). 2019-01-08 17:19:04 +01:00
Bartosz Taudul
13a0ddfe03 No need to perform capture here. 2019-01-06 21:11:36 +01:00
Bartosz Taudul
6a1c552c61 Reduce zone loading time. 2019-01-06 20:49:37 +01:00
Bartosz Taudul
980c54e349 Track trace loading time. 2019-01-06 19:09:50 +01:00
Bartosz Taudul
5ac26ce084 Init common Worker variables in header. 2019-01-06 19:04:50 +01:00
Bartosz Taudul
a313ed4720 Track separate time offset for GPU times. 
This is second version of 0.4.2 dump file format. Previous 0.4.2 format
cannot be read anymore.

041/aa.tracy (0.4.1) {18987 KB} -> 042/aa.tracy (0.4.2) {10051 KB}  52.94% size change
041/android.tracy (0.4.1) {696753 KB} -> 042/android.tracy (0.4.2) {542738 KB}  77.90% size change
041/asset-new.tracy (0.4.1) {97163 KB} -> 042/asset-new.tracy (0.4.2) {78402 KB}  80.69% size change
041/asset-new-id.tracy (0.4.1) {105683 KB} -> 042/asset-new-id.tracy (0.4.2) {84341 KB}  79.81% size change
041/asset-old.tracy (0.4.1) {100205 KB} -> 042/asset-old.tracy (0.4.2) {80688 KB}  80.52% size change
041/big.tracy (0.4.1) {2246014 KB} -> 042/big.tracy (0.4.2) {939578 KB}  41.83% size change
041/crash.tracy (0.4.1) {143 KB} -> 042/crash.tracy (0.4.2) {131 KB}  91.37% size change
041/crash2.tracy (0.4.1) {3411 KB} -> 042/crash2.tracy (0.4.2) {1420 KB}  41.63% size change
041/darkrl.tracy (0.4.1) {31818 KB} -> 042/darkrl.tracy (0.4.2) {15762 KB}  49.54% size change
041/darkrl2.tracy (0.4.1) {18778 KB} -> 042/darkrl2.tracy (0.4.2) {7945 KB}  42.31% size change
041/darkrl-old.tracy (0.4.1) {151346 KB} -> 042/darkrl-old.tracy (0.4.2) {67449 KB}  44.57% size change
041/deadlock.tracy (0.4.1) {53 KB} -> 042/deadlock.tracy (0.4.2) {52 KB}  98.55% size change
041/gn-opengl.tracy (0.4.1) {45860 KB} -> 042/gn-opengl.tracy (0.4.2) {29005 KB}  63.25% size change
041/gn-vulkan.tracy (0.4.1) {45618 KB} -> 042/gn-vulkan.tracy (0.4.2) {29352 KB}  64.34% size change
041/long.tracy (0.4.1) {1583550 KB} -> 042/long.tracy (0.4.2) {1182800 KB}  74.69% size change
041/mem.tracy (0.4.1) {1243058 KB} -> 042/mem.tracy (0.4.2) {1369067 KB}  110.14% size change
041/multi.tracy (0.4.1) {14519 KB} -> 042/multi.tracy (0.4.2) {8000 KB}  55.10% size change
041/new.tracy (0.4.1) {1439 KB} -> 042/new.tracy (0.4.2) {1105 KB}  76.75% size change
041/q3bsp-mt.tracy (0.4.1) {1414323 KB} -> 042/q3bsp-mt.tracy (0.4.2) {949855 KB}  67.16% size change
041/q3bsp-st.tracy (0.4.1) {301334 KB} -> 042/q3bsp-st.tracy (0.4.2) {240347 KB}  79.76% size change
041/selfprofile.tracy (0.4.1) {399648 KB} -> 042/selfprofile.tracy (0.4.2) {197704 KB}  49.47% size change
041/tbrowser.tracy (0.4.1) {13052 KB} -> 042/tbrowser.tracy (0.4.2) {9503 KB}  72.81% size change
041/test.tracy (0.4.1) {60309 KB} -> 042/test.tracy (0.4.2) {40700 KB}  67.49% size change
041/virtualfile_hc.tracy (0.4.1) {108967 KB} -> 042/virtualfile_hc.tracy (0.4.2) {72424 KB}  66.46% size change
041/zfile_hc.tracy (0.4.1) {58814 KB} -> 042/zfile_hc.tracy (0.4.2) {39418 KB}  67.02% size change
 2019-01-03 21:52:43 +01:00
Bartosz Taudul
f8ef5b726a Store time deltas, instead of absolute time in trace dumps. 
This change greatly reduces the size of saved dumps, but increase the
cost of processing during loading. One notable outlier in the dataset
below is mem.tracy, which increased in size, even if changes in the
memory dump saving scheme decrease size of the other traces.

041/aa.tracy (0.4.1) {18987 KB} -> 042/aa.tracy (0.4.2) {10140 KB}  53.40% size change
041/android.tracy (0.4.1) {696753 KB} -> 042/android.tracy (0.4.2) {542738 KB}  77.90% size change
041/asset-new.tracy (0.4.1) {97163 KB} -> 042/asset-new.tracy (0.4.2) {78402 KB}  80.69% size change
041/asset-new-id.tracy (0.4.1) {105683 KB} -> 042/asset-new-id.tracy (0.4.2) {84341 KB}  79.81% size change
041/asset-old.tracy (0.4.1) {100205 KB} -> 042/asset-old.tracy (0.4.2) {80688 KB}  80.52% size change
041/big.tracy (0.4.1) {2246014 KB} -> 042/big.tracy (0.4.2) {943083 KB}  41.99% size change
041/crash.tracy (0.4.1) {143 KB} -> 042/crash.tracy (0.4.2) {131 KB}  91.39% size change
041/crash2.tracy (0.4.1) {3411 KB} -> 042/crash2.tracy (0.4.2) {1425 KB}  41.80% size change
041/darkrl.tracy (0.4.1) {31818 KB} -> 042/darkrl.tracy (0.4.2) {15897 KB}  49.96% size change
041/darkrl2.tracy (0.4.1) {18778 KB} -> 042/darkrl2.tracy (0.4.2) {8002 KB}  42.62% size change
041/darkrl-old.tracy (0.4.1) {151346 KB} -> 042/darkrl-old.tracy (0.4.2) {67945 KB}  44.89% size change
041/deadlock.tracy (0.4.1) {53 KB} -> 042/deadlock.tracy (0.4.2) {52 KB}  98.55% size change
041/gn-opengl.tracy (0.4.1) {45860 KB} -> 042/gn-opengl.tracy (0.4.2) {30983 KB}  67.56% size change
041/gn-vulkan.tracy (0.4.1) {45618 KB} -> 042/gn-vulkan.tracy (0.4.2) {31349 KB}  68.72% size change
041/long.tracy (0.4.1) {1583550 KB} -> 042/long.tracy (0.4.2) {1225316 KB}  77.38% size change
041/mem.tracy (0.4.1) {1243058 KB} -> 042/mem.tracy (0.4.2) {1369291 KB}  110.15% size change
041/multi.tracy (0.4.1) {14519 KB} -> 042/multi.tracy (0.4.2) {8110 KB}  55.86% size change
041/new.tracy (0.4.1) {1439 KB} -> 042/new.tracy (0.4.2) {1108 KB}  77.01% size change
041/q3bsp-mt.tracy (0.4.1) {1414323 KB} -> 042/q3bsp-mt.tracy (0.4.2) {949855 KB}  67.16% size change
041/q3bsp-st.tracy (0.4.1) {301334 KB} -> 042/q3bsp-st.tracy (0.4.2) {240347 KB}  79.76% size change
041/selfprofile.tracy (0.4.1) {399648 KB} -> 042/selfprofile.tracy (0.4.2) {197713 KB}  49.47% size change
041/tbrowser.tracy (0.4.1) {13052 KB} -> 042/tbrowser.tracy (0.4.2) {9503 KB}  72.81% size change
041/test.tracy (0.4.1) {60309 KB} -> 042/test.tracy (0.4.2) {40700 KB}  67.49% size change
041/virtualfile_hc.tracy (0.4.1) {108967 KB} -> 042/virtualfile_hc.tracy (0.4.2) {72839 KB}  66.85% size change
041/zfile_hc.tracy (0.4.1) {58814 KB} -> 042/zfile_hc.tracy (0.4.2) {39608 KB}  67.35% size change
 2018-12-30 23:42:17 +01:00
Bartosz Taudul
8c5670489c Freeing nullptr is valid. 2018-12-20 17:03:09 +01:00
Bartosz Taudul
a220f38fbd Add support for matching source locations ignoring case. 2018-12-18 16:52:29 +01:00
Bartosz Taudul
acddcbd9bf Add case-ignoring string matcher. 2018-12-18 16:52:05 +01:00
Bartosz Taudul
7376ec65b0 Store lock announce and terminate time in trace dump. 2018-12-16 21:09:37 +01:00
Bartosz Taudul
9360df89b1 Store announce and terminate time of locks. 2018-12-16 21:07:26 +01:00
Bartosz Taudul
f42d52923a No-op processing of lock terminate events. 2018-12-16 20:46:33 +01:00
Bartosz Taudul
793e955480 Fix crash when loading a trace with unresolved strings. 
Unresolved strings ("???") are not saved, but the internal string
pointers are saved. Resolving such string pointers caused a crash.
 2018-10-21 16:38:20 +02:00
Bartosz Taudul
9211ce42da Non-on-demand client is only able to handle one connection. 2018-09-09 19:42:06 +02:00
Bartosz Taudul
984a711666 Send protocol version to verify handshake. 2018-09-09 19:28:53 +02:00
Bartosz Taudul
270072b09e Require shibboleth match at start of connection. 2018-09-09 18:26:53 +02:00
Bartosz Taudul
806c8de463 Only one outgoing server connection is supported. 2018-09-09 17:47:20 +02:00
Bartosz Taudul
9f4d6692dc Proper way to get full frame count. 2018-09-01 12:38:12 +02:00
Bartosz Taudul
8f1acf2571 Store explicit program name and capture time. 2018-08-29 01:02:29 +02:00
Bartosz Taudul
bc6a553a3a Fetch thread names in memory events. 2018-08-28 01:48:19 +02:00
Bartosz Taudul
99b7a39c52 Save/load crash information. 2018-08-20 02:27:24 +02:00
Bartosz Taudul
3b526b074e Send crash report. 2018-08-20 02:23:55 +02:00
Bartosz Taudul
366ea35593 Allow crash event reporting. 
When crash happens there's no longer anything to profile -- don't wait
for unfinished zones to finish before sending client terminate
confirmation.
 2018-08-20 01:03:16 +02:00
Bartosz Taudul
e0a4b9c56a Save/load host info. 2018-08-19 18:28:48 +02:00
Bartosz Taudul
203d9b4b85 Store host info. 2018-08-19 18:21:56 +02:00
Bartosz Taudul
a15a287a6b Don't over-allocate vectors, when exact needed size is known. 
This reduces memory usage when loading saved traces. Memory usage
reduction observed on a selected number of traces:

5625.76 MB -> 5330.29 MB
3292.94 MB -> 2978.66 MB
632.77 MB  -> 479.58 MB
681.32 MB  -> 506.27 MB
11.9 GB    -> 11.22 GB
854.21 MB  -> 806.17 MB
10.57 GB   -> 7175.31 MB
67.38 MB   -> 66.63 MB
2026.12 MB -> 1744.2 MB
86.55 MB   -> 85.57 MB
343.64 MB  -> 244.81 MB
201.93 MB  -> 162.25 MB
 2018-08-09 19:41:15 +02:00
Bartosz Taudul
a14a6fa8fb Don't shadow variables. 2018-08-09 19:41:15 +02:00
Bartosz Taudul
a51da71fa4 Add lock, plot counts to worker. 2018-08-08 19:21:53 +02:00
Bartosz Taudul
d36b0aff45 Fix progress of loading GPU zones. 2018-08-05 13:07:58 +02:00
Bartosz Taudul
9d051cf5ee Add support for discontinuous frames. 2018-08-05 02:15:54 +02:00
Bartosz Taudul
6b8a3b25ba Fix drawing of last frame. 2018-08-04 23:19:35 +02:00
Bartosz Taudul
9b4348b497 Handle frame name queries. 2018-08-04 21:10:45 +02:00
Bartosz Taudul
4424a7d7e8 Last time should never be zero. 2018-08-04 21:10:45 +02:00
Bartosz Taudul
23dfc2e3fc Multiple frame sets support. 2018-08-04 21:10:45 +02:00
Bartosz Taudul
0b4c2724ce Add strings to map directly in StringDiscovery. 2018-08-04 17:10:45 +02:00
Bartosz Taudul
ada9f78678 Use StringDiscovery for plots. 2018-08-04 16:33:03 +02:00
Bartosz Taudul
e174e2c12a Remove obsolete comment. 
Nothing happens with the source data, as the strings are uniquely stored
in the StoreString() function.
 2018-08-04 15:46:10 +02:00
Bartosz Taudul
6ef2d2d9a3 Track progress of loading plots. 2018-08-04 15:17:37 +02:00
Bartosz Taudul
18896044c4 Display explicit names of loaded things. 2018-07-29 16:56:46 +02:00
Bartosz Taudul
9f13475b52 Track trace version in worker. 2018-07-29 15:33:48 +02:00
Bartosz Taudul
13509c14f1 Save size of 'active' and 'frees' memory data structures. 2018-07-29 15:29:56 +02:00
Bartosz Taudul
00d07e39f7 Save threadExpand size to allow vector preallocation. 2018-07-29 15:19:44 +02:00
Bartosz Taudul
bff6eb4c34 Save source location zones counts. 
This allows preallocation of zones-in-source-location vectors.
 2018-07-29 14:58:01 +02:00
Bartosz Taudul
12b90d1630 Move tracy version to a separate header. 2018-07-29 14:20:44 +02:00
Bartosz Taudul
ccc5c37af5 Always count source location zones. 2018-07-29 14:16:13 +02:00
Bartosz Taudul
4456c8a454 Reserve space for string data. 2018-07-29 14:13:29 +02:00
Bartosz Taudul
648070e6a1 Include each loaded zone in sub progress. 2018-07-28 19:22:28 +02:00
Bartosz Taudul
4741dab833 Track sub progress. 2018-07-28 19:05:01 +02:00
Bartosz Taudul
a14238c199 Add sub progress display. 2018-07-28 18:56:52 +02:00
Bartosz Taudul
a46425f4e9 Adjust load stages. 2018-07-28 18:26:00 +02:00
Bartosz Taudul
0bf0ceed3d Track trace loading progress. 2018-07-28 17:59:17 +02:00
Bartosz Taudul
d84d0b7754 Don't try to read empty timelines. 2018-07-22 21:15:28 +02:00
Bartosz Taudul
25116a8059 Don't try to compress invalid thread. 2018-07-22 21:13:42 +02:00
Bartosz Taudul
010cf66e43 Call Vector destructors. 2018-07-22 21:01:45 +02:00
Bartosz Taudul
29159069ab Properly initialize child index. 2018-07-22 20:14:55 +02:00