Rename hprof to tprof

Instead of having 4 profilers with 4 different APIs,
this pull request unifies call, time, and memory
profiling under a single module.

lib/tools/doc/src/Makefile

@@ -35,7 +35,7 @@ XML_APPLICATION_FILES = ref_man.xml
 XML_REF3_FILES = \
 	cover.xml \
 	eprof.xml \
-	hprof.xml \
+	tprof.xml \
 	fprof.xml \
 	cprof.xml \
 	lcnt.xml \

lib/tools/doc/src/ref_man.xml

@@ -52,8 +52,8 @@
        Erlang programs. Uses trace to file to minimize runtime
        performance impact, and displays time for calling and called 
        functions.</item>
-       <tag><em>hprof</em></tag>
-      <item>A heap profiling tool; measures how much heap space is
+       <tag><em>tprof</em></tag>
+      <item>A tracing profiling tool; measures how much time or heap space is
        allocated by Erlang processes.</item>
 
       <tag><em>lcnt</em></tag>
@@ -74,7 +74,7 @@
   <xi:include href="eprof.xml"/>
   <xi:include href="erlang_mode.xml"/>
   <xi:include href="fprof.xml"/>
-  <xi:include href="hprof.xml"/>
+  <xi:include href="tprof.xml"/>
   <xi:include href="lcnt.xml"/>
   <xi:include href="make.xml"/>
   <xi:include href="tags.xml"/>

lib/tools/doc/src/specs.xml

@@ -5,7 +5,7 @@
   <xi:include href="../specs/specs_make.xml"/>
   <xi:include href="../specs/specs_lcnt.xml"/>
   <xi:include href="../specs/specs_eprof.xml"/>
-  <xi:include href="../specs/specs_hprof.xml"/>
+  <xi:include href="../specs/specs_tprof.xml"/>
   <xi:include href="../specs/specs_tags.xml"/>
   <xi:include href="../specs/specs_cover.xml"/>
   <xi:include href="../specs/specs_xref.xml"/>

lib/tools/src/Makefile

@@ -38,7 +38,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/tools-$(VSN)
 MODULES= \
 	cover                \
 	eprof                \
-	hprof                \
+	tprof                \
 	fprof                \
 	cprof                \
 	lcnt                 \

lib/tools/test/Makefile

@@ -23,7 +23,7 @@ include $(ERL_TOP)/make/$(TARGET)/otp.mk
 MODULES =  \
 	cover_SUITE \
 	eprof_SUITE \
-	hprof_SUITE \
+	tprof_SUITE \
 	emacs_SUITE \
 	fprof_SUITE \
 	cprof_SUITE \

system/doc/efficiency_guide/profiling.xml

@@ -41,22 +41,14 @@
     <p>Erlang/OTP contains several tools to help finding bottlenecks:</p>
 
     <list type="bulleted">
+      <item><p><seeerl marker="tools:tprof"><c>tprof</c></seeerl> is
+          a tracing profiler that can measure call count, call time, or
+          heap allocations per function call.</p></item>
+
       <item><p><seeerl marker="tools:fprof"><c>fprof</c></seeerl> provides
           the most detailed information about where the program time is spent,
           but it significantly slows down the program it profiles.</p></item>
 
-      <item><p><seeerl marker="tools:eprof"><c>eprof</c></seeerl> provides
-          time information of each function used in the program. No call graph is
-          produced, but <c>eprof</c> has considerably less impact on the program it
-          profiles.</p>
-        <p>If the program is too large to be profiled by <c>fprof</c> or
-          <c>eprof</c>, <c>cprof</c> can be used to locate code parts that
-          are to be more thoroughly profiled using <c>fprof</c> or <c>eprof</c>.</p></item>
-
-      <item><p><seeerl marker="tools:cprof"><c>cprof</c></seeerl> is the
-          most lightweight tool, but it only provides execution counts on a
-          function basis (for all processes, not per process).</p></item>
-
       <item><p><seeerl marker="runtime_tools:dbg"><c>dbg</c></seeerl> is the
           generic erlang tracing frontend. By using the <c>timestamp</c> or
           <c>cpu_timestamp</c> options it can be used to time how long function
@@ -67,7 +59,6 @@
           locking mechanisms. It is useful when looking for bottlenecks in
           interaction between process, port, ets tables and other entities
           that can be run in parallel.</p></item>
-
     </list>
 
     <p>The tools are further described in

system/doc/general_info/upcoming_incompatibilities.xml

@@ -331,6 +331,16 @@ String Content
         warnings about all occurrences of <c>maybe</c> without quotes.
       </p>
     </section>
+
+    <section>
+      <title>cprof and eprof will be replaced by tprof</title>
+      <p>
+	As of OTP 29, the <c>cprof</c> and <c>eprof</c> will be
+	removed in favor of
+	<seeerl marker="tools:tprof"><c>tprof</c></seeerl> added
+	in OTP 27.
+      </p>
+    </section>
   </section>
 
 </chapter>