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The way the various properties[] arrays are initialized is inefficient:
- only the .data members change at runtime, yet the whole arrays of
properties with all the fields are constructed on the stack one by
one by the code.
- there's duplication, eg. the properties of "org.freedesktop.systemd1.Unit"
are repeated in several unit types.
Fix it by moving the information about properties into static const
sections. Instead of storing the .data directly in the property, store
a constant offset from a run-time base.
The small arrays of struct BusBoundProperties bind together the constant
information with the right runtime information (the base pointer).
On my system the code shrinks by 60 KB, data increases by 10 KB.
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Now that objects of all unit types are allocated the exact amount of
memory they need, the Unit union has lost its purpose. Remove it.
"Unit" is a more natural name for the base unit class than "Meta", so
rename Meta to Unit.
Access to members of the base class gets simplified.
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Add missing dbus_error_init() in UNKNOWN_OBJECT case. Fixes assertion
systemd[1]: Caught <ABRT>, dumped core as pid 6256.
systemd[1]: Freezing execution.
Core was generated by `/bin/systemd systemd.unit=graphical.target'.
Program terminated with signal 6, Aborted.
#0 0x00007f8966ec81db in raise () from /lib64/libpthread.so.0
(gdb) bt
#0 0x00007f8966ec81db in raise () from /lib64/libpthread.so.0
#1 0x000000000040823b in crash (sig=6) at src/main.c:120
#2 <signal handler called>
#3 0x00007f896613c075 in raise () from /lib64/libc.so.6
#4 0x00007f896613d806 in abort () from /lib64/libc.so.6
#5 0x00007f89672ac8a5 in _dbus_abort () at dbus-sysdeps.c:94
#6 0x00007f89672a37b5 in _dbus_warn_check_failed (
format=0x7f89672b35d8 "arguments to %s() were incorrect, assertion
\"%s\" failed in file %s line %d.\nThis is normally a bug in some
application using the D-Bus library.\n") at dbus-internals.c:289
#7 0x0000000000441500 in bus_unit_message_handler (connection=0x21b6090,
message=0x21b6760, data=0x1f3e870) at src/dbus-unit.c:572
#8 0x00007f8967299f11 in _dbus_object_tree_dispatch_and_unlock (
tree=0x219d660, message=0x21b6760) at dbus-object-tree.c:858
#9 0x00007f896728bca2 in dbus_connection_dispatch (connection=0x21b6090)
at dbus-connection.c:4688
#10 0x000000000043befa in bus_dispatch (m=0x1f3e870) at src/dbus.c:547
#11 0x000000000041056d in manager_loop (m=0x1f3e870) at src/manager.c:2344
#12 0x0000000000409515 in main (argc=<value optimized out>,
argv=<value optimized out>) at src/main.c:1229
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PropertyReadOnly errors
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jobs
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When cross-compiling systemd, the introspection XML files fail to be
generated because the systemd host binary is not executable. This patch
works around this by putting the introspection XML data into separate
ELF sections and extracting them from the binary when generating the XML
files.
The extracted XML data is passed through the strings utility in order to
strip the trailing NUL character. A small AWK script is used to prepend
the doctype and add the opening and closing node tags respectively.
Finally, the C preprocessor is used to substitute the correct doctype
information from the D-Bus header files.
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the dbus queue (i.e. because it was deleted before it was fully created
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unconditionally, and thus get rid of broadcast signals in most cases
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register our services on our own micro usb server in addition to the bus
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