Merge branch 'lukas/tools/cover_mem_footprint/OTP-9043' into dev

* lukas/tools/cover_mem_footprint/OTP-9043:
  Update testcases which need crypto to be skipped on platforms which does not have crypto
  Update internal pmap to have a process limit Add write concurrancy to cover masters ?COVER_TABLE
  Update documentation to reflect performance enhancement changes of cover
  Add aync_analyse_to_file function to cover
  Split the cover ets tables into two tables, one with the clause info and one with the bump info. This will make it faster to search the tables when analyzing and exporting data.
  Add process debug tags
  Update remote collect to handle multiple requests at once
  Remove io printout warnings when exporting an imported module
  Make the call to cover parallel so that the test_server takes advantage of the new cool parallel cover features.
  Update cover to allow multiple analyse and analyze_to_file calls at the same time. For each call a seperate process will be spawned to handle the request.
  Refactor cover to prepare it for making analysis parallel
  Update remote loading to only load a certain number of modules at a time to prevent memory usage explosion

Conflicts:
	lib/tools/test/cover_SUITE.erl

2 files changed, 36 insertions, 0 deletions

diff --git a/lib/tools/doc/src/cover.xml b/lib/tools/doc/src/cover.xml
index 323bd0dda8..0a3302bda5 100644
--- a/lib/tools/doc/src/cover.xml
+++ b/lib/tools/doc/src/cover.xml
@@ -270,6 +270,8 @@
           defaults to <c>function</c>.</p>
         <p>If <c>Module</c> is not Cover compiled, the function returns
           <c>{error,{not_cover_compiled,Module}}</c>.</p>
+	<p>HINT: It is possible to issue multiple analyse_to_file commands at
+	  the same time. </p>
       </desc>
     </func>
     <func>
@@ -307,6 +309,33 @@
           <c>.beam</c> file, or in <c>../src</c> relative to that
           directory. If no source code is found, 
           <c>,{error,no_source_code_found}</c> is returned.</p>
+	<p>HINT: It is possible to issue multiple analyse_to_file commands at
+	  the same time. </p> 
+      </desc>
+    </func>
+    <func>
+      <name>async_analyse_to_file(Module) -> </name>
+      <name>async_analyse_to_file(Module,Options) -> </name>
+      <name>async_analyse_to_file(Module, OutFile) -> </name>
+      <name>async_analyse_to_file(Module, OutFile, Options) ->  pid()</name>
+      <fsummary>Asynchronous call to analyse_to_file.</fsummary>
+      <type>
+        <v>Module = atom()</v>
+        <v>OutFile = string()</v>
+        <v>Options = [Option]</v>
+        <v>Option = html</v>
+        <v>Error = {not_cover_compiled,Module} | {file,File,Reason} | no_source_code_found | not_main_node</v>
+        <v>&nbsp;File = string()</v>
+        <v>&nbsp;Reason = term()</v>
+      </type>
+      <desc>
+	<p>This function works exactly the same way as 
+	<seealso marker="#analyse_to_file-1">analyse_to_file</seealso> except
+	that it is asynchronous instead of synchronous. The spawned process
+	will link with the caller when created. If an <c>Error</c> occurs
+	while doing the cover analysis the process will crash with the same
+	error reason as <seealso marker="#analyse_to_file-1">analyse_to_file</seealso> 
+	would return.</p>
       </desc>
     </func>
     <func>
diff --git a/lib/tools/doc/src/cover_chapter.xml b/lib/tools/doc/src/cover_chapter.xml
index b4f7919183..92a790c34e 100644
--- a/lib/tools/doc/src/cover_chapter.xml
+++ b/lib/tools/doc/src/cover_chapter.xml
@@ -403,6 +403,13 @@ ok
         database contains information about each executable line in each
         Cover compiled module, performance decreases proportionally to
         the size and number of the Cover compiled modules.</p>
+      <p>To improve performance when analysing cover results it is possible
+	to do multiple calls to <seealso marker="cover#analyse-1">analyse</seealso>
+	and <seealso marker="cover#analyse_to_file-1">analyse_to_file</seealso>
+	at once. You can also use the 
+	<seealso marker="cover#async_analyse_to_file-1">async_analyse_to_file</seealso> 
+	convenience function.
+      </p>
     </section>
 
     <section>