There are a few things acceptable/safe in a
signal handler, and taking locks is not one of them.
This replaces the logic with a simple counter that
serves the purpose just as well.
If we get a double signal, we log and ignore.
Change-Id: If589c18492468c120d00c213805467bcbba05d27
Reviewed-on: https://gerrit.libreoffice.org/83150
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
Tested-by: Ashod Nakashian <ashnakash@gmail.com>
The following flags are affected:
ShutdownRequestFlag
TerminationFlag
DumpGlobalState
Since it's common to grep for all places
that set or reset these global flags, it
makes more sense to have explicit functions
for each operation. Now we have set and reset
accessors where appropriate and get is reserved
for read-only access.
This changes the getters to only return
the boolean value of these flags rather than
a reference to the atomic object, now that
they are read-only.
Also, a few Mobile-specific cases were folded
either with other Mobile-specific sections, or
they were now identical to the non-Mobile case
and therefore deduplicated, making the code
cleaner and more readable.
Change-Id: Icc852aa43e86695d4e7d5962040a9b5086d9d08c
Reviewed-on: https://gerrit.libreoffice.org/81978
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
Tested-by: Ashod Nakashian <ashnakash@gmail.com>
Otherwise both loolwsd and unit-copy-paste.so would have a
SigHandlerTrap:
==26186==ERROR: AddressSanitizer: odr-violation (0x000002090ae0):
[1] size=40 'SigHandlerTrap' ../common/SigUtil.cpp:76:12
[2] size=40 'SigHandlerTrap' common/SigUtil.cpp:76:12
These globals were registered at these points:
[1]:
#0 0x5f9a28 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0x7f8f537f1d8b in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/test/../test/.libs/unit-copy-paste.so+0x60ad8b)
[2]:
#0 0x5f9a28 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0xe2bcfe in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/loolwsd+0xe2bcfe)
Change-Id: I54d5f6d4298848cacd437d302cff0e8c5003fb8c
Otherwise both loolwsd and unit-copy-paste.so would have a
ShutdownRequestFlag:
==13663==ERROR: AddressSanitizer: odr-violation (0x00000208f860):
[1] size=1 'ShutdownRequestFlag' ../common/SigUtil.cpp:60:19
[2] size=1 'ShutdownRequestFlag' common/SigUtil.cpp:60:19
These globals were registered at these points:
[1]:
#0 0x5f9a18 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0x7f9b903f1d0b in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/test/../test/.libs/unit-copy-paste.so+0x60ad0b)
[2]:
#0 0x5f9a18 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0xe2b9fe in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/loolwsd+0xe2b9fe)
Change-Id: I247760325f804813249e814dbb4576493619dee7
Otherwise both loolwsd and unit-copy-paste.so would have a
DumpGlobalState:
==5783==ERROR: AddressSanitizer: odr-violation (0x00000208f7a0):
[1] size=1 'DumpGlobalState' ../common/SigUtil.cpp:49:19
[2] size=1 'DumpGlobalState' common/SigUtil.cpp:49:19
These globals were registered at these points:
[1]:
#0 0x5f9a08 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0x7f5c5edf1c9b in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/test/../test/.libs/unit-copy-paste.so+0x60ac9b)
[2]:
#0 0x5f9a08 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0xe2b98e in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/loolwsd+0xe2b98e)
Change-Id: I4b7b0238eb9b38a30875e8788c1dcb27f1d1643f
Otherwise both loolwsd and unit-copy-paste.so would have a
TerminationFlag:
==11732==ERROR: AddressSanitizer: odr-violation (0x00000208f4a0):
[1] size=1 'TerminationFlag' ../common/SigUtil.cpp:41:19
[2] size=1 'TerminationFlag' common/SigUtil.cpp:41:19
These globals were registered at these points:
[1]:
#0 0x5f9988 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0x7f5df9cf18cb in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/test/../test/.libs/unit-copy-paste.so+0x60a8cb)
[2]:
#0 0x5f9988 in __asan_register_globals.part.13 /home/vmiklos/git/libreoffice/lode/packages/llvm-472c6ef8b0f53061b049039f9775ab127beafbe4.src/compiler-rt/lib/asan/asan_globals.cc:365
#1 0xe2b4fe in asan.module_ctor (/home/vmiklos/git/libreoffice/online-san/loolwsd+0xe2b4fe)
Change-Id: Ic620b143ecb77699f40676ff39d0fa7abceb34d5
Spent hours on trying to cleverly use the existing TerminationFlag
(with minor modifications to the code that checks it, and some
additional code to set and reset it), but could not get it to work.
This is simpler, but sure, using a global variable is ugly of course.
At least the new MobileTerminationFlag is very specific in semantics
and only used in the mobile apps.
Change-Id: I0775fdfa7880750ca12c6fd7ec41d3d3ceb2f0ad
We don't have any user-generated signals to handle by shutting down in
an app.
One less thing to worry about. Now it's just the global
TerminationFlag that is problematic when the code runs in just one
process.
Pull the notification pieces out of SigUtil.cpp - not signal safe,
and invoked only from LOOLWSD anyway.
In a non-blocking world, the socket close notification sends are
instant - so more work required to count-down / timeout remaining
clients.
