Trivial Description
Hitting this issue with most of the forestdb tests. It looks like on a Raspbery Pi (For whatever reason) the `initial_lock` is locked from the start of main:
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will@pi3 /home/will/usb/couchbase/couchbase/build/forestdb/tests/functional gdb ./compact_functional_test 20:57:35 |
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GNU gdb (Raspbian 7.7.1+dfsg-5) 7.7.1
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Copyright (C) 2014 Free Software Foundation, Inc.
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> |
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This is free software: you are free to change and redistribute it. |
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There is NO WARRANTY, to the extent permitted by law. Type "show copying" |
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and "show warranty" for details. |
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This GDB was configured as "arm-linux-gnueabihf". |
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Type "show configuration" for configuration details. |
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For bug reporting instructions, please see:
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<http://www.gnu.org/software/gdb/bugs/>. |
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Find the GDB manual and other documentation resources online at:
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<http://www.gnu.org/software/gdb/documentation/>. |
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For help, type "help". |
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Type "apropos word" to search for commands related to "word"... |
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Reading symbols from ./compact_functional_test...done. |
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(gdb) b main
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Breakpoint 1 at 0x12678: file /home/will/usb/couchbase/couchbase/forestdb/tests/functional/compact_functional_test.cc, line 3284. |
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(gdb) run
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Starting program: /home/will/usb/couchbase/couchbase/build/forestdb/tests/functional/compact_functional_test |
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[Thread debugging using libthread_db enabled]
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Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1". |
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Breakpoint 1, main () at /home/will/usb/couchbase/couchbase/forestdb/tests/functional/compact_functional_test.cc:3284 |
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3284 int main(){
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(gdb) p initial_lock
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$1 = 1
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(gdb)
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By comparison on my macbook;
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(lldb) b main
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Breakpoint 1: where = compact_functional_test`main + 4 at compact_functional_test.cc:3287, address = 0x0000000100012794
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(lldb) run
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Process 22002 launched: './compact_functional_test' (x86_64) |
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Process 22002 stopped
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* thread #1: tid = 0x126a47c, 0x0000000100012794 compact_functional_test`main + 4 at compact_functional_test.cc:3287, queue = 'com.apple.main-thread, stop reason = breakpoint 1.1 |
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frame #0: 0x0000000100012794 compact_functional_test` main + 4 at compact_functional_test.cc:3287 |
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3284 int main(){
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3285 int i;
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3286
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-> 3287 compact_deleted_doc_test();
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3288 compact_upto_test(false); // single kv instance in file |
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3289 compact_upto_test(true); // multiple kv instance in file |
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3290 wal_delete_compact_upto_test();
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(lldb) p initial_lock
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(OSSpinLock) $0 = 0
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Edit:
Seems to be an initialisation issue. I manually set the spinlock to 0 when inside the spinlock loop and it continued on fine.