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| author | Vicențiu Ciorbaru <vicentiu@mariadb.org> | 2018-01-16 22:57:52 +0200 |
|---|---|---|
| committer | Vicențiu Ciorbaru <vicentiu@mariadb.org> | 2018-01-19 16:11:34 +0200 |
| commit | 26e5f9dda13efad33e867742ea4e42e479b51b2b (patch) | |
| tree | 022d92626b90a9253c37770f1d2dfc5d7a02a4de /config.h.cmake | |
| parent | a7a4519a40c58947796c6d9b2e4e58acc18aeef8 (diff) | |
| download | mariadb-git-26e5f9dda13efad33e867742ea4e42e479b51b2b.tar.gz | |
MDEV-14229: Stack trace is not resolved for shared objects
Resolving a stacktrace including functions in dynamic libraries requires
us to look inside the libraries for the symbols. Addr2line needs to be
started with the correct binary for each address on the stack. To do this,
figure out which library it is using dladdr, then if the addr2line
binary was started with a different binary, fork it again with the
correct one.
We only have one addr2line process running at any point during the
stacktrace resolving step. The maximum number of forks for addr2line should
generally be around 6.
One for server stacktrace code, one for plugin code, one when going back
into server code, one for pthread library, one for libc, one for the
_start function in the server. More can come up if plugin calls server
function which goes back to a plugin, etc.
Diffstat (limited to 'config.h.cmake')
| -rw-r--r-- | config.h.cmake | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/config.h.cmake b/config.h.cmake index dfdd4215e4a..99a2ebdd093 100644 --- a/config.h.cmake +++ b/config.h.cmake @@ -148,6 +148,7 @@ #cmakedefine HAVE_CUSERID 1 #cmakedefine HAVE_CXX_NEW 1 #cmakedefine HAVE_DIRECTIO 1 +#cmakedefine HAVE_DLADDR 1 #cmakedefine HAVE_DLERROR 1 #cmakedefine HAVE_DLOPEN 1 #cmakedefine HAVE_DOPRNT 1 |