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author | Richard Carlsson <[email protected]> | 2013-09-27 11:07:32 +0200 |
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committer | Fredrik Gustafsson <[email protected]> | 2013-11-05 10:55:59 +0100 |
commit | d64c016b8453ac143a6c26493a0fb1908f34ed99 (patch) | |
tree | 53dc0a2ebd203ebee2fc3e39f70ce0332eed9fbe /Makefile.in | |
parent | 00a3dade2d58836bca334be36843775343e5e269 (diff) | |
download | otp-d64c016b8453ac143a6c26493a0fb1908f34ed99.tar.gz otp-d64c016b8453ac143a6c26493a0fb1908f34ed99.tar.bz2 otp-d64c016b8453ac143a6c26493a0fb1908f34ed99.zip |
Avoid serialization on code_server in xmerl:export()
The inheritance mechanism in xmerl used to use 'catch apply(M,F,Args)' to
try different modules M until one was found that had a function F/A.
However, when M:F/A does not exist, apply/3 will trap to
error_handler:undefined_function/3, which will call code:ensure_loaded(M),
making a synchronous request to the code server process. If many processes
tried to use xmerl:export() concurrently, they would get serialized waiting
for the code server process. This patch uses erlang:function_exported/3
instead to check if M:F/A exists. If M exists, it should already have been
loaded at that point due to the inheritance checking in the
xmerl:callbacks/1 function.
Diffstat (limited to 'Makefile.in')
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