Age | Commit message (Collapse) | Author |
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Use `counters:add/3` instead of `ets:update_counter/3`
for counting the number of times a line is executed.
By default, the reference to the counter array for each module will be
stored in a persistent term and retrieved every time a counter is
updated. This makes the compiler test suite with coverage enabled run
*almost* twice as fast (on my computer, in about 6 minutes down from
more than 11 minutes).
To get even more speed, the new `cover:local_only/0` function can be
called to put cover into a mode where the cover-compiled code can only
be run on the local node. In this mode, the cover-compiled modules in
a more efficient way by compiling the counter reference into the
code. This shaves off about one more minute, making the compiler test
suite with coverage enabled run *more than* twice as fast (in about 5
minutes on my computer).
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introduced after OTP_R13B03.
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I did not find any legitimate use of "can not", however skipped
changing e.g RFCs archived in the source tree.
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Add functions for cover compilation and analysis on multiple
files. This allows for more parallelisation.
All functions for cover compilation can now take a list of
modules/files.
cover:analyse/analyze and cover:analyse_to_file/analyze_to_file can be
called without the Modules arguement in order to analyse all cover
compiled and imported modules, or with a list of modules.
Also, the number of lookups in ets tables is reduced, which has also
improved the performance when analysing and resetting cover data.
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Commit 29231033 made cover fall back to compile info if source was not
found in pwd or ../src. This isn't sufficient for source that lies in
subdirectories of ../src when beams and source have been moved since
compilation (eg. install of some OTP applications), so first try finding
source relative to the beam directory.
For example, given a beam path
/installed/path/to/app-1.0/ebin/root.beam
and a source path
/compiled/path/to/app/src/subdir/root.erl
then look for
/installed/path/to/app-1.0/ebin/../src/subdir/root.erl
before the source path.
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The change was introduced in commit 29231033.
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OTP-10523
Earlier, if the connection to a remote cover node was lost, all cover
data was lost and the cover_server on the remote node would die. This
would cause problems if there were cover compiled modules that would
still be executed since they would attempt to write to the no longer
existing ets tables belonging to the cover_server.
This commit changes this behavior so that the cover_server on the
remote node will survive connection loss and continue collecting cover
data. If the connection is re-established then the main node will sync
with the remote node again and cover data will not be lost (unless the
node was down).
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OTP-10523
* Added cover:flush(Nodes), which will fetch data from remote nodes
without stopping cover on those nodes.
* Added cover:get_main_node(), which returns the node name of the main
node. This is used by test_server to avoid {error,not_main_node}
when a slave starts another slave (e.g. in test_server's own tests).
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