This patch introduces "oneshot_lines" mode for `Coverage.start`, which
checks "whether each line was executed at least once or not", instead of
"how many times each line was executed". A hook for each line is fired
at most once, and after it is fired, the hook flag was removed; it runs
with zero overhead.
See [Feature #15022] in detail.
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This change makes method coverage result have not only first lineno of
method defintion, but also code range (i.e. first lineno, first column,
last lineno, and last column).
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This change makes each ISeq keep NODE's code range. This information is
needed for method coverage.
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Traditionally, method coverage measurement was implemented by inserting
`trace2` instruction to the head of method iseq. So, it just measured
methods defined by `def` keyword.
This commit drastically changes the measuring mechanism of method
coverage; at `RUBY_EVENT_CALL`, it keeps a hash from rb_method_entry_t*
to runs (i.e., it counts the runs per method entry), and at
`Coverage.result`, it creates the result hash by enumerating all
`rb_method_entry_t*` objects (by `ObjectSpace.each_object`).
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* compile.c (DECL_BRANCH_BASE, ADD_TRACE_BRANCH_COVERAGE): Add
a last location to arguments.
* compile.c (compile_if, compile_case, compile_case2, compile_loop, iseq_compile_each0):
Pass a last location to macros.
* ext/coverage/coverage.c (branch_coverage): Add a last location to
a return value.
* test/coverage/test_coverage.rb: Follow-up these changes.
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Ensure `opt` is a hash before using `rb_hash_lookup` to `opt`.
This will prevent SEGV when an inappropriate object (i.e. an array)
is passed to `opt`.
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Coverage generates unique ID numbers for each branch and each method.
Use long instead of int for the IDs. I don't want to see 2^32 branches
and methods in one file, but just in case...
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The old API:
Coverage.start
load "foo.rb"
p Coverage.result #=> {"foo.rb" => [1, 2, nil]}
The new API:
ENV["COVERAGE_EXPERIMENTAL_MODE"] = "true"
Coverage.start(lines: true)
load "foo.rb"
p Coverage.result #=> {"foo.rb" => {:lines => [1, 2, nil]}}
This new API allows us to add other measuring target types.
Notes:
* To keep compatibility, the old interface is still remained; passing no
optional argument makes `Coverage.result` return the old format.
* This feature is still experimental. So, to enable the new API, the
environment variable `COVERAGE_EXPERIMENTAL_MODE` must be set. I plan
to activate this feature by Ruby 2.5.
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To prepare new measuring targets: branch and method coverages.
So far, iseq->coverage was an array of counts executed for line coverage.
Now, it is a three-element array for each measuring target,
whose first element is an array for line coverage.
The second element is planned for branch coverage, and the third will be
for method coverage.
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* ext/coverage/coverage.c (rb_coverage_running): add to quickly
check if coverage is enabled. patched by Burke Libbey <burke AT
libbey.me> in [ruby-core:81726]. [Feature #13667]
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It was returning old file coverages as empty arrays to the user.
[ruby-core:74596] [Bug #12220]
* ext/coverage/coverage.c (rb_coverages): remove unused static state.
* thread.c: Moved and renamed coverage_clear_result_i to reset_coverage_i.
* test/coverage/test_coverage.rb: improve precision of tests.
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* ext/coverage/coverage.c (coverage_clear_result_i): use local
variable coverage.
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capture coverage information without stopping the coverage tool.
[ruby-core:67940] [Feature #10816]
* test/coverage/test_coverage.rb: test for change.
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RBASIC_CLASS(obj) macro which returns a class of `obj'.
This change is a part of RGENGC branch [ruby-trunk - Feature #8339].
* object.c: add new function rb_obj_reveal().
This function reveal interal (hidden) object by rb_obj_hide().
Note that do not change class before and after hiding.
Only permitted example is:
klass = RBASIC_CLASS(obj);
rb_obj_hide(obj);
....
rb_obj_reveal(obj, klass);
TODO: API design. rb_obj_reveal() should be replaced with others.
TODO: modify constified variables using cast may be harmful for
compiler's analysis and optimizaton.
Any idea to prohibt inserting RBasic::klass directly?
If rename RBasic::klass and force to use RBASIC_CLASS(obj),
then all codes such as `RBASIC(obj)->klass' will be
compilation error. Is it acceptable? (We have similar
experience at Ruby 1.9,
for example "RARRAY(ary)->ptr" to "RARRAY_PTR(ary)".
* internal.h: add some macros.
* RBASIC_CLEAR_CLASS(obj) clear RBasic::klass to make it internal
object.
* RBASIC_SET_CLASS(obj, cls) set RBasic::klass.
* RBASIC_SET_CLASS_RAW(obj, cls) same as RBASIC_SET_CLASS
without write barrier (planned).
* RCLASS_SET_SUPER(a, b) set super class of a.
* array.c, class.c, compile.c, encoding.c, enum.c, error.c, eval.c,
file.c, gc.c, hash.c, io.c, iseq.c, marshal.c, object.c,
parse.y, proc.c, process.c, random.c, ruby.c, sprintf.c,
string.c, thread.c, transcode.c, vm.c, vm_eval.c, win32/file.c:
Use above macros and functions to access RBasic::klass.
* ext/coverage/coverage.c, ext/readline/readline.c,
ext/socket/ancdata.c, ext/socket/init.c,
* ext/zlib/zlib.c: ditto.
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some minor nonfree OS. I have no means of debugging the bug. My
personal opinion is that such OS should be unsupported unless there
is an active maintainer. [ruby-core:37352]
* test/coverage/test_coverage.rb: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
COVERAGE__ and introduce coverage.so instead. How to measure
coverage: (1) require "coverage.so", (2) require or load Ruby source
file, and (3) Coverage.result will return the same hash as COVERAGE__.
[ruby-dev:35324]
* thread.c (rb_enable_coverages): start coverage measurement by using
rb_add_event_hook.
* thread.c (rb_get_coverages): returns current results of coverage
measurement.
* include/ruby/intern.h: add prototype for above two functions.
* vm_core.h, vm.c: add field of coverages to rb_vm_t.
* insns.def (trace): remove special handling for COVERAGE__.
* iseq.c (prepare_iseq_build): switch COVERAGE__ to
rb_get_coverages().
* parse.y (coverage): ditto.
* thread.c (clear_coverage): ditto.
* lib/coverage.rb: use coverage.so instead of COVERAGE__.
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