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authorMagnus Henoch <[email protected]>2014-12-12 18:51:26 +0000
committerBjörn Gustavsson <[email protected]>2015-05-28 13:41:11 +0200
commit0f5916b35938c983cd5a4a9931730a5e554358f3 (patch)
treec8a44a6c42b00c25e65be03579c77c4b3fb2ce72
parent7f3a057a179af274f24667ecbb7b8f3d40b667b6 (diff)
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Dialyzer to cache results of HiPE compilation
Cache the results of native compilation in $XDG_CACHE_HOME/dialyzer_hipe_cache. This can reduce the startup time significantly. If XDG_CACHE_HOME is unset, it defaults to $HOME/.cache. See the XDG Base Directory spec for more details: http://standards.freedesktop.org/basedir-spec/basedir-spec-0.7.html Under that directory, create a subdirectory called ARCH-VERSION-CHECKSUM, where ARCH is the HiPE architecture, VERSION is the HiPE version number, and CHECKSUM is the return value of hipe_bifs:system_crc/0. Caching can be disabled by specifying --no_native_cache on the command line.
-rw-r--r--lib/dialyzer/doc/src/dialyzer.xml7
-rw-r--r--lib/dialyzer/src/dialyzer_cl.erl64
-rw-r--r--lib/dialyzer/src/dialyzer_cl_parse.erl10
3 files changed, 72 insertions, 9 deletions
diff --git a/lib/dialyzer/doc/src/dialyzer.xml b/lib/dialyzer/doc/src/dialyzer.xml
index 5f52906625..fc076c24a6 100644
--- a/lib/dialyzer/doc/src/dialyzer.xml
+++ b/lib/dialyzer/doc/src/dialyzer.xml
@@ -70,7 +70,7 @@
[--build_plt] [--add_to_plt] [--remove_from_plt]
[--check_plt] [--no_check_plt] [--plt_info] [--get_warnings]
[--dump_callgraph file] [--no_native] [--fullpath]
- [--statistics]</code>
+ [--statistics] [--no_native_cache]</code>
<p>Options:</p>
<taglist>
<tag><c><![CDATA[files_or_dirs]]></c> (for backwards compatibility also
@@ -198,6 +198,11 @@
heuristically performs when dialyzing many files; this avoids the
compilation time but it may result in (much) longer analysis
time.</item>
+ <tag><c><![CDATA[--no_native_cache]]></c></tag>
+ <item>By default, Dialyzer caches the results of native compilation in the
+ <c>$XDG_CACHE_HOME/erlang/dialyzer_hipe_cache</c> directory.
+ <c>XDG_CACHE_HOME</c> defaults to <c>$HOME/.cache</c>.
+ Use this option to disable caching.</item>
<tag><c><![CDATA[--fullpath]]></c></tag>
<item>Display the full path names of files for which warnings are emitted.</item>
<tag><c><![CDATA[--gui]]></c></tag>
diff --git a/lib/dialyzer/src/dialyzer_cl.erl b/lib/dialyzer/src/dialyzer_cl.erl
index 4386a8d52a..55fcd15641 100644
--- a/lib/dialyzer/src/dialyzer_cl.erl
+++ b/lib/dialyzer/src/dialyzer_cl.erl
@@ -512,32 +512,82 @@ hipe_compile(Files, #options{erlang_mode = ErlangMode} = Options) ->
dialyzer_worker],
report_native_comp(Options),
{T1, _} = statistics(wall_clock),
- native_compile(Mods),
+ Cache = (get(dialyzer_options_native_cache) =/= false),
+ native_compile(Mods, Cache),
{T2, _} = statistics(wall_clock),
report_elapsed_time(T1, T2, Options)
end
end.
-native_compile(Mods) ->
+native_compile(Mods, Cache) ->
case dialyzer_utils:parallelism() > ?MIN_PARALLELISM of
true ->
Parent = self(),
- Pids = [spawn(fun () -> Parent ! {self(), hc(M)} end) || M <- Mods],
+ Pids = [spawn(fun () -> Parent ! {self(), hc(M, Cache)} end) || M <- Mods],
lists:foreach(fun (Pid) -> receive {Pid, Res} -> Res end end, Pids);
false ->
- lists:foreach(fun (Mod) -> hc(Mod) end, Mods)
+ lists:foreach(fun (Mod) -> hc(Mod, Cache) end, Mods)
end.
-hc(Mod) ->
+hc(Mod, Cache) ->
{module, Mod} = code:ensure_loaded(Mod),
case code:is_module_native(Mod) of
true -> ok;
false ->
%% io:format(" ~w", [Mod]),
- {ok, Mod} = hipe:c(Mod),
- ok
+ case Cache of
+ false ->
+ {ok, Mod} = hipe:c(Mod),
+ ok;
+ true ->
+ hc_cache(Mod)
+ end
end.
+hc_cache(Mod) ->
+ CacheBase = cache_base_dir(),
+ %% Use HiPE architecture and version in directory name, to avoid
+ %% clashes between incompatible binaries.
+ HipeArchVersion =
+ lists:concat(
+ [erlang:system_info(hipe_architecture), "-",
+ hipe:version(), "-",
+ hipe_bifs:system_crc()]),
+ CacheDir = filename:join(CacheBase, HipeArchVersion),
+ OrigBeamFile = code:which(Mod),
+ {ok, {Mod, <<Checksum:128>>}} = beam_lib:md5(OrigBeamFile),
+ CachedBeamFile = filename:join(CacheDir, lists:concat([Mod, "-", Checksum, ".beam"])),
+ ok = filelib:ensure_dir(CachedBeamFile),
+ ModBin =
+ case filelib:is_file(CachedBeamFile) of
+ true ->
+ {ok, BinFromFile} = file:read_file(CachedBeamFile),
+ BinFromFile;
+ false ->
+ {ok, Mod, CompiledBin} = compile:file(OrigBeamFile, [from_beam, native, binary]),
+ ok = file:write_file(CachedBeamFile, CompiledBin),
+ CompiledBin
+ end,
+ code:unstick_dir(filename:dirname(OrigBeamFile)),
+ {module, Mod} = code:load_binary(Mod, CachedBeamFile, ModBin),
+ true = code:is_module_native(Mod),
+ ok.
+
+cache_base_dir() ->
+ %% http://standards.freedesktop.org/basedir-spec/basedir-spec-0.7.html
+ %% If XDG_CACHE_HOME is set to an absolute path, use it as base.
+ XdgCacheHome = os:getenv("XDG_CACHE_HOME"),
+ CacheHome =
+ case is_list(XdgCacheHome) andalso filename:pathtype(XdgCacheHome) =:= absolute of
+ true ->
+ XdgCacheHome;
+ false ->
+ %% Otherwise, the default is $HOME/.cache.
+ {ok, [[Home]]} = init:get_argument(home),
+ filename:join(Home, ".cache")
+ end,
+ filename:join([CacheHome, "dialyzer_hipe_cache"]).
+
new_state() ->
#cl_state{}.
diff --git a/lib/dialyzer/src/dialyzer_cl_parse.erl b/lib/dialyzer/src/dialyzer_cl_parse.erl
index 21fc424a1b..fae88ed6e8 100644
--- a/lib/dialyzer/src/dialyzer_cl_parse.erl
+++ b/lib/dialyzer/src/dialyzer_cl_parse.erl
@@ -75,6 +75,9 @@ cl(["-nn"|T]) ->
cl(["--no_native"|T]) ->
put(dialyzer_options_native, false),
cl(T);
+cl(["--no_native_cache"|T]) ->
+ put(dialyzer_options_native_cache, false),
+ cl(T);
cl(["--plt_info"|T]) ->
put(dialyzer_options_analysis_type, plt_info),
cl(T);
@@ -363,7 +366,7 @@ help_message() ->
[--build_plt] [--add_to_plt] [--remove_from_plt]
[--check_plt] [--no_check_plt] [--plt_info] [--get_warnings]
[--dump_callgraph file] [--no_native] [--fullpath]
- [--statistics]
+ [--statistics] [--no_native_cache]
Options:
files_or_dirs (for backwards compatibility also as: -c files_or_dirs)
Use Dialyzer from the command line to detect defects in the
@@ -468,6 +471,11 @@ Options:
Bypass the native code compilation of some key files that Dialyzer
heuristically performs when dialyzing many files; this avoids the
compilation time but it may result in (much) longer analysis time.
+ --no_native_cache
+ By default, Dialyzer caches the results of native compilation in the
+ $XDG_CACHE_HOME/erlang/dialyzer_hipe_cache directory.
+ XDG_CACHE_HOME defaults to $HOME/.cache. Use this option to disable
+ caching.
--fullpath
Display the full path names of files for which warnings are emitted.
--gui