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$ valgrind --show-leak-kinds=all --leak-check=full build/coredumpctl dump --output /tmp/ff
...
==16431== HEAP SUMMARY:
==16431== in use at exit: 3,680 bytes in 13 blocks
==16431== total heap usage: 831 allocs, 818 frees, 197,776 bytes allocated
==16431==
==16431== 2 bytes in 1 blocks are still reachable in loss record 1 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x4C4D5AD: strdup (strdup.c:42)
==16431== by 0x49B2387: bus_message_parse_fields (bus-message.c:5300)
==16431== by 0x49A23AF: bus_message_from_malloc (bus-message.c:560)
==16431== by 0x49C459B: bus_socket_make_message (bus-socket.c:1099)
==16431== by 0x49C4C5B: bus_socket_read_message (bus-socket.c:1213)
==16431== by 0x49CE4CE: bus_read_message (sd-bus.c:1777)
==16431== by 0x49CFA2C: sd_bus_call (sd-bus.c:2176)
==16431== by 0x1105F3: check_units_active (coredumpctl.c:1029)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== 9 bytes in 1 blocks are still reachable in loss record 2 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x4939067: malloc_multiply (alloc-util.h:78)
==16431== by 0x493921D: hexmem (hexdecoct.c:62)
==16431== by 0x49C2B75: bus_socket_start_auth_client (bus-socket.c:626)
==16431== by 0x49C2D78: bus_socket_start_auth (bus-socket.c:665)
==16431== by 0x49C3B09: bus_socket_connect (bus-socket.c:915)
==16431== by 0x49CBB08: bus_start_address (sd-bus.c:1103)
==16431== by 0x49CBFEA: sd_bus_start (sd-bus.c:1187)
==16431== by 0x49CC452: sd_bus_open_system_with_description (sd-bus.c:1294)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431==
==16431== 9 bytes in 1 blocks are still reachable in loss record 3 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x4C4D5AD: strdup (strdup.c:42)
==16431== by 0x497364E: free_and_strdup (string-util.c:1013)
==16431== by 0x49C9FB1: hello_callback (sd-bus.c:547)
==16431== by 0x49D0A3A: process_reply (sd-bus.c:2498)
==16431== by 0x49D13E0: process_message (sd-bus.c:2677)
==16431== by 0x49D165F: process_running (sd-bus.c:2739)
==16431== by 0x49D20DD: bus_process_internal (sd-bus.c:2957)
==16431== by 0x49D21E8: sd_bus_process (sd-bus.c:2984)
==16431== by 0x49CF21E: bus_ensure_running (sd-bus.c:2053)
==16431== by 0x49CF51F: sd_bus_call (sd-bus.c:2095)
==16431== by 0x1105F3: check_units_active (coredumpctl.c:1029)
==16431==
==16431== 24 bytes in 1 blocks are still reachable in loss record 4 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x495CB0D: malloc_multiply (alloc-util.h:78)
==16431== by 0x495CB2A: prioq_new (prioq.c:35)
==16431== by 0x495CC02: prioq_ensure_allocated (prioq.c:60)
==16431== by 0x49CEF84: sd_bus_call_async (sd-bus.c:1995)
==16431== by 0x49CA0E6: bus_send_hello (sd-bus.c:581)
==16431== by 0x49CC019: sd_bus_start (sd-bus.c:1196)
==16431== by 0x49CC452: sd_bus_open_system_with_description (sd-bus.c:1294)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431==
==16431== 38 bytes in 1 blocks are still reachable in loss record 5 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x4C4D5AD: strdup (strdup.c:42)
==16431== by 0x497364E: free_and_strdup (string-util.c:1013)
==16431== by 0x49C7F97: sd_bus_set_address (sd-bus.c:269)
==16431== by 0x49CC314: bus_set_address_system (sd-bus.c:1262)
==16431== by 0x49CC3E0: sd_bus_open_system_with_description (sd-bus.c:1281)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== 64 bytes in 1 blocks are still reachable in loss record 6 of 13
==16431== at 0x4838748: malloc (vg_replace_malloc.c:298)
==16431== by 0x483AD63: realloc (vg_replace_malloc.c:826)
==16431== by 0x4902663: greedy_realloc (alloc-util.c:55)
==16431== by 0x49C7D7D: sd_bus_new (sd-bus.c:255)
==16431== by 0x49CC398: sd_bus_open_system_with_description (sd-bus.c:1271)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== 64 bytes in 1 blocks are still reachable in loss record 7 of 13
==16431== at 0x4838748: malloc (vg_replace_malloc.c:298)
==16431== by 0x483AD63: realloc (vg_replace_malloc.c:826)
==16431== by 0x4902663: greedy_realloc (alloc-util.c:55)
==16431== by 0x49CE54E: bus_rqueue_make_room (sd-bus.c:1786)
==16431== by 0x49C44FC: bus_socket_make_message (bus-socket.c:1087)
==16431== by 0x49C4C5B: bus_socket_read_message (bus-socket.c:1213)
==16431== by 0x49CE4CE: bus_read_message (sd-bus.c:1777)
==16431== by 0x49CE6AF: dispatch_rqueue (sd-bus.c:1814)
==16431== by 0x49D162E: process_running (sd-bus.c:2733)
==16431== by 0x49D20DD: bus_process_internal (sd-bus.c:2957)
==16431== by 0x49D21E8: sd_bus_process (sd-bus.c:2984)
==16431== by 0x49CF21E: bus_ensure_running (sd-bus.c:2053)
==16431==
==16431== 65 bytes in 1 blocks are still reachable in loss record 8 of 13
==16431== at 0x483AB1A: calloc (vg_replace_malloc.c:752)
==16431== by 0x496E5D6: getpeersec (socket-util.c:969)
==16431== by 0x49C291C: bus_get_peercred (bus-socket.c:594)
==16431== by 0x49C2CB2: bus_socket_start_auth (bus-socket.c:650)
==16431== by 0x49C3B09: bus_socket_connect (bus-socket.c:915)
==16431== by 0x49CBB08: bus_start_address (sd-bus.c:1103)
==16431== by 0x49CBFEA: sd_bus_start (sd-bus.c:1187)
==16431== by 0x49CC452: sd_bus_open_system_with_description (sd-bus.c:1294)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431==
==16431== 181 bytes in 1 blocks are still reachable in loss record 9 of 13
==16431== at 0x483AD19: realloc (vg_replace_malloc.c:826)
==16431== by 0x49C4791: bus_socket_read_message (bus-socket.c:1143)
==16431== by 0x49CE4CE: bus_read_message (sd-bus.c:1777)
==16431== by 0x49CFA2C: sd_bus_call (sd-bus.c:2176)
==16431== by 0x1105F3: check_units_active (coredumpctl.c:1029)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== 256 bytes in 1 blocks are still reachable in loss record 10 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x496E740: getpeergroups (socket-util.c:998)
==16431== by 0x49C29BD: bus_get_peercred (bus-socket.c:599)
==16431== by 0x49C2CB2: bus_socket_start_auth (bus-socket.c:650)
==16431== by 0x49C3B09: bus_socket_connect (bus-socket.c:915)
==16431== by 0x49CBB08: bus_start_address (sd-bus.c:1103)
==16431== by 0x49CBFEA: sd_bus_start (sd-bus.c:1187)
==16431== by 0x49CC452: sd_bus_open_system_with_description (sd-bus.c:1294)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431==
==16431== 256 bytes in 1 blocks are still reachable in loss record 11 of 13
==16431== at 0x4838748: malloc (vg_replace_malloc.c:298)
==16431== by 0x483AD63: realloc (vg_replace_malloc.c:826)
==16431== by 0x495D1A0: prioq_put (prioq.c:162)
==16431== by 0x49CF0EA: sd_bus_call_async (sd-bus.c:2023)
==16431== by 0x49CA0E6: bus_send_hello (sd-bus.c:581)
==16431== by 0x49CC019: sd_bus_start (sd-bus.c:1196)
==16431== by 0x49CC452: sd_bus_open_system_with_description (sd-bus.c:1294)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431==
==16431== 856 bytes in 1 blocks are still reachable in loss record 12 of 13
==16431== at 0x483AB1A: calloc (vg_replace_malloc.c:752)
==16431== by 0x49A1F33: bus_message_from_header (bus-message.c:458)
==16431== by 0x49A22B1: bus_message_from_malloc (bus-message.c:535)
==16431== by 0x49C459B: bus_socket_make_message (bus-socket.c:1099)
==16431== by 0x49C4C5B: bus_socket_read_message (bus-socket.c:1213)
==16431== by 0x49CE4CE: bus_read_message (sd-bus.c:1777)
==16431== by 0x49CFA2C: sd_bus_call (sd-bus.c:2176)
==16431== by 0x1105F3: check_units_active (coredumpctl.c:1029)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== 1,856 bytes in 1 blocks are still reachable in loss record 13 of 13
==16431== at 0x483880B: malloc (vg_replace_malloc.c:299)
==16431== by 0x49C6EDF: malloc_multiply (alloc-util.h:78)
==16431== by 0x49C7C81: sd_bus_new (sd-bus.c:235)
==16431== by 0x49CC398: sd_bus_open_system_with_description (sd-bus.c:1271)
==16431== by 0x49CC4C6: sd_bus_open_system (sd-bus.c:1303)
==16431== by 0x49D4424: bus_default (sd-bus.c:3655)
==16431== by 0x49D44BC: sd_bus_default_system (sd-bus.c:3668)
==16431== by 0x110444: check_units_active (coredumpctl.c:1007)
==16431== by 0x110998: run (coredumpctl.c:1087)
==16431== by 0x110A45: main (coredumpctl.c:1100)
==16431==
==16431== LEAK SUMMARY:
==16431== definitely lost: 0 bytes in 0 blocks
==16431== indirectly lost: 0 bytes in 0 blocks
==16431== possibly lost: 0 bytes in 0 blocks
==16431== still reachable: 3,680 bytes in 13 blocks
==16431== suppressed: 0 bytes in 0 blocks
==16431==
We want to propagate the return value from gdb, hence this commit makes
use of the liberalization of DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE()
in previous commit.
We would open the file very early, which is not nice, if we e.g. fail when
parsing later options. Let's do the usual thing and just open it just before
writing, and close immediately after writing.
This changes DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE() to propagate positive
return values as they were, i.e. stops mapping them all to EXIT_FAILURE. This
was suggested in review, but I thought that we only ever return EXIT_FAILURE,
so we don't need to propagate multiple return values.
I was wrong. Turns out that we already *do* have multiple positive return
values, when we call external binaries and propagate the result. systemd-inhibit
is one example, and b453c447e0 actually broke
this propagation. This commit fixes it.
In systemd-fsck we have the opposite case: we have only one failure value, and the
code needs to be adjusted, so that it keeps returning EXIT_FAILURE.
All other users of DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE() return <= 1, and
are unaffected by this change.
We generally want to close the pager last. This patch closes the pager last,
after the static destuctor calls. This means that they can do logging and such
like during normal program runtime.
The rule is changed from "put in basic unless there's a reason not to" to "put
in shared unless there's a reason not to", to match the change done in previous
commit. This minimizes libbasic. See previous commit for the reasons why this
is useful.
Previously, the guideline was based on whether the files in question use
"publicly exported APIs". This distinction is not particularly relevant. Let's
consider all other programs we compile: most of them use "publicly exported
APIs", usually linking to libsystemd-shared.so for the actual code. But those
programs are not forced to be in src/basic, and the distinction whether they
happen to use 'sd-*.h' or not is of no importance. The same is true for files
in src/shared/. If we didn't have publicly exported shared objects, we'd put
everything in libsystemd-shared.so. So let's only move things out of it that we
need to. Previous guideline was not "wrong", in the sense that it created *a*
split that was functional (no code in src/shared was required in the publicly
exported shared objects), but it put more files in basic/ then necessary.
Not much changes in practice, because (as previous commit shows), moving files
between libbasic.a and libsystemd-shared.so mostly just changes compilation
order.
The list of components which cannot use libsystemd-shared.so is adjusted.
This doesn't have much effect on the final build, because we link libbasic.a
into libsystemd-shared.so, so in the end, all the object built from basic/
end up in libsystemd-shared. And when the static library is linked into binaries,
any objects that are included in it but are not used are trimmed. Hence, the
size of output artifacts doesn't change:
$ du -sb /var/tmp/inst*
54181861 /var/tmp/inst1 (old)
54207441 /var/tmp/inst1s (old split-usr)
54182477 /var/tmp/inst2 (new)
54208041 /var/tmp/inst2s (new split-usr)
(The negligible change in size is because libsystemd-shared.so is bigger
by a few hundred bytes. I guess it's because symbols are named differently
or something like that.)
The effect is on the build process, in particular partial builds. This change
effectively moves the requirements on some build steps toward the leaves of the
dependency tree. Two effects:
- when building items that do not depend on libsystemd-shared, we
build less stuff for libbasic.a (which wouldn't be used anyway,
so it's a net win).
- when building items that do depend on libshared, we reduce libbasic.a as a
synchronization point, possibly allowing better parallelism.
Method:
1. copy list of .h files from src/basic/meson.build to /tmp/basic
2. $ for i in $(grep '.h$' /tmp/basic); do echo $i; git --no-pager grep "include \"$i\"" src/basic/ 'src/lib*' 'src/nss-*' 'src/journal/sd-journal.c' |grep -v "${i%.h}.c";echo ;done | less
