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Fix SessionDelegate::OnSessionHang docs header #22928

Merged
merged 1 commit into from
Sep 29, 2022
Merged

Fix SessionDelegate::OnSessionHang docs header #22928

merged 1 commit into from
Sep 29, 2022

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msandstedt
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Issue Being Resolved

Change overview

The SessionDelegate::OnSessionHang docs header note is inaccurate. It lists that it is not safe to modify the SessionHolder or underlying Session from this callback context. That's not correct. The SessionHolder can be modified (e.g. released) from here, and the Session can be modified. For instance, changing the session from state kDefunct to kPendingEviction would be legal.

What would not be safe is allocating a new session from this context, as this could cause the underlying session (always in kDefunct state from this context) to be evicted and freed while it is still in use to distribute the OnSessionHang to all holders, resulting in use after free. This means that the actual limitation is the same as that listed in OnSessionReleased.

Change the docs header to reflect.

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github-actions bot commented Sep 28, 2022 •
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PR #22928: Size comparison from a8bd389 to 2e289ec

Increases (4 builds for bl602, cc13x2_26x2, esp32)
platform target config section a8bd389 2e289ec change % change
bl602 lighting-app bl602 (read/write) 1388746 1388754 8 0.0
.text 1068352 1068356 4 0.0
cc13x2_26x2 pump-controller-app LP_CC2652R7 (read/write) 177680 177688 8 0.0
esp32 all-clusters-app c3devkit (read/write) 1788054 1788062 8 0.0
.flash.rodata 257624 257632 8 0.0
m5stack (read/write) 563948 563956 8 0.0
.flash.rodata 314680 314688 8 0.0
Decreases (4 builds for bl602, cc13x2_26x2, psoc6, telink)
platform target config section a8bd389 2e289ec change % change
bl602 lighting-app bl602+rpc .text 1099702 1099700 -2 -0.0
cc13x2_26x2 pump-controller-app LP_CC2652R7 (read only) 671839 671831 -8 -0.0
.text 585272 585264 -8 -0.0
psoc6 all-clusters cy8ckit_062s2_43012 .debug_info 26821647 26821646 -1 -0.0
telink ota-requestor-app tlsr9518adk80d (read/write) 844564 844556 -8 -0.0
text 598978 598976 -2 -0.0
Full report (37 builds for bl602, bl702, cc13x2_26x2, cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, psoc6, qpg, telink)
platform target config section a8bd389 2e289ec change % change
bl602 lighting-app bl602 (read/write) 1388746 1388754 8 0.0
.bss 90729 90729 0 0.0
.data 9928 9928 0 0.0
.text 1068352 1068356 4 0.0
bl602+rpc (read/write) 1433966 1433966 0 0.0
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.data 10312 10312 0 0.0
.text 1099702 1099700 -2 -0.0
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.debug_abbrev 1506903 1506903 0 0.0
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(read/write) 182484 182484 0 0.0
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pump-controller-app LP_CC2652R7 (read only) 671839 671831 -8 -0.0
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.data 752 752 0 0.0
.rodata 0 0 0 0.0
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ota-requestor-no-progress-logging cyw930739m2evb_01 (read/write) 543282 543282 0 0.0
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.data 716 716 0 0.0
.rodata 0 0 0 0.0
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efr32 lighting-app BRD4161A (read/write) 1110520 1110520 0 0.0
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.data 2072 2072 0 0.0
.text 971896 971896 0 0.0
BRD4161A+rpc (read/write) 973676 973676 0 0.0
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.text 820360 820360 0 0.0
BRD4161A+rs911x (read/write) 1003792 1003792 0 0.0
.bss 169368 169368 0 0.0
.data 2064 2064 0 0.0
.text 832340 832340 0 0.0
lock-app BRD4161A+wf200 (read/write) 1151316 1151316 0 0.0
.bss 152248 152248 0 0.0
.data 2072 2072 0 0.0
.text 996976 996976 0 0.0
window-app BRD4161A (read/write) 1102576 1102576 0 0.0
.bss 137980 137980 0 0.0
.data 2096 2096 0 0.0
.text 962480 962480 0 0.0
esp32 all-clusters-app c3devkit (read only) 1222930 1222930 0 0.0
(read/write) 1788054 1788062 8 0.0
.dram0.bss 76944 76944 0 0.0
.dram0.data 13840 13840 0 0.0
.flash.rodata 257624 257632 8 0.0
.flash.text 1222930 1222930 0 0.0
.iram0.text 65204 65204 0 0.0
m5stack (read only) 1233023 1233023 0 0.0
(read/write) 563948 563956 8 0.0
.dram0.bss 82304 82304 0 0.0
.dram0.data 34296 34296 0 0.0
.flash.rodata 314680 314688 8 0.0
.flash.text 1227639 1227639 0 0.0
.iram0.text 123939 123939 0 0.0
k32w light k32w0+release (read/write) 649908 649908 0 0.0
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.data 2068 2068 0 0.0
.text 574400 574400 0 0.0
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.data 2076 2076 0 0.0
.text 630868 630868 0 0.0
linux chip-tool-ipv6only arm64 (read only) 10422220 10422220 0 0.0
(read/write) 706257 706257 0 0.0
.bss 33953 33953 0 0.0
.data 2864 2864 0 0.0
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.dynamic 560 560 0 0.0
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thermostat-no-ble arm64 (read only) 2387428 2387428 0 0.0
(read/write) 143649 143649 0 0.0
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bss 143660 143660 0 0.0
rodata 135780 135780 0 0.0
text 803196 803196 0 0.0
psoc6 all-clusters cy8ckit_062s2_43012 (read only) 841968 841968 0 0.0
(read/write) 1744340 1744340 0 0.0
.ARM.attributes 46 46 0 0.0
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.data 2664 2664 0 0.0
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.heap 841968 841968 0 0.0
.noinit 148 148 0 0.0
.ramVectors 736 736 0 0.0
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.stab 156 156 0 0.0
.stabstr 335 335 0 0.0
.stack_dummy 4096 4096 0 0.0
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.text 1544576 1544576 0 0.0
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text 0 0 0 0.0
all-clusters-minimal cy8ckit_062s2_43012 (read only) 842704 842704 0 0.0
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.stab 156 156 0 0.0
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.strtab 476186 476186 0 0.0
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8 8 0 0.0
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text 592792 592792 0 0.0
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bss 73936 73936 0 0.0
noinit 43488 43488 0 0.0
text 598978 598976 -2 -0.0

@andy31415 andy31415 merged commit 8b01c85 into project-chip:master Sep 29, 2022
sharad-patil24 pushed a commit to sharad-patil24/connectedhomeip that referenced this pull request Sep 30, 2022
@msandstedt @sharad-patil24
Fix SessionDelegate::OnSessionHang docs header (project-chip#22928)
c95ebef
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[Documentation] SessionDelegate::OnSessionHang docs header note is inaccurate
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@msandstedt @andy31415 @arkq