From 1b03fa2f74c3a740316e1b3e8cedd5ba8e4902f1 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Tue, 12 May 2020 01:25:03 +0200
Subject: [PATCH] bpo-40602: Rename hashtable.h to pycore_hashtable.h

* Move Modules/hashtable.h to Include/internal/pycore_hashtable.h
* Move Modules/hashtable.c to Python/hashtable.c
* Python is now linked to hashtable.c. _tracemalloc is no longer
  linked to hashtable.c. Previously, marshal.c got hashtable.c via
  _tracemalloc.c which is built as a builtin module.
---
 .../internal/pycore_hashtable.h                 | 17 ++++++++++++-----
 Makefile.pre.in                                 |  2 ++
 Modules/Setup                                   |  2 +-
 Modules/_tracemalloc.c                          |  2 +-
 PCbuild/pythoncore.vcxproj                      |  3 ++-
 PCbuild/pythoncore.vcxproj.filters              |  9 ++++++---
 {Modules => Python}/hashtable.c                 |  2 +-
 Python/marshal.c                                |  2 +-
 8 files changed, 26 insertions(+), 13 deletions(-)
 rename Modules/hashtable.h => Include/internal/pycore_hashtable.h (96%)
 rename {Modules => Python}/hashtable.c (99%)

diff --git a/Modules/hashtable.h b/Include/internal/pycore_hashtable.h
similarity index 96%
rename from Modules/hashtable.h
rename to Include/internal/pycore_hashtable.h
index dbec23d2851872..585f76b51d7112 100644
--- a/Modules/hashtable.h
+++ b/Include/internal/pycore_hashtable.h
@@ -1,7 +1,12 @@
-#ifndef Py_HASHTABLE_H
-#define Py_HASHTABLE_H
-/* The whole API is private */
-#ifndef Py_LIMITED_API
+#ifndef Py_INTERNAL_HASHTABLE_H
+#define Py_INTERNAL_HASHTABLE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
 
 /* Single linked list */
 
@@ -207,5 +212,7 @@ PyAPI_FUNC(int) _Py_hashtable_pop(
     _Py_hashtable_pop(TABLE, sizeof(KEY), &(KEY), sizeof(DATA), &(DATA))
 
 
-#endif   /* Py_LIMITED_API */
+#ifdef __cplusplus
+}
 #endif
+#endif   /* !Py_INTERNAL_HASHTABLE_H */
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 0d616d304484ce..d545a9efb3cd99 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -351,6 +351,7 @@ PYTHON_OBJS=	\
 		Python/getversion.o \
 		Python/graminit.o \
 		Python/hamt.o \
+		Python/hashtable.o \
 		Python/import.o \
 		Python/importdl.o \
 		Python/initconfig.o \
@@ -1131,6 +1132,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/internal/pycore_getopt.h \
 		$(srcdir)/Include/internal/pycore_gil.h \
 		$(srcdir)/Include/internal/pycore_hamt.h \
+		$(srcdir)/Include/internal/pycore_hashtable.h \
 		$(srcdir)/Include/internal/pycore_import.h \
 		$(srcdir)/Include/internal/pycore_initconfig.h \
 		$(srcdir)/Include/internal/pycore_interp.h \
diff --git a/Modules/Setup b/Modules/Setup
index 6bf142419de3d9..87e73bac78faec 100644
--- a/Modules/Setup
+++ b/Modules/Setup
@@ -132,7 +132,7 @@ faulthandler faulthandler.c
 #
 # bpo-35053: The module must be builtin since _Py_NewReference()
 # can call _PyTraceMalloc_NewReference().
-_tracemalloc _tracemalloc.c hashtable.c
+_tracemalloc _tracemalloc.c
 
 # PEG-based parser module -- slated to be *the* parser
 _peg_parser _peg_parser.c
diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index ea7e0127366ab0..f22338166d0dc1 100644
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -2,7 +2,7 @@
 #include "pycore_gc.h"            // PyGC_Head
 #include "pycore_pymem.h"         // _Py_tracemalloc_config
 #include "pycore_traceback.h"
-#include "hashtable.h"
+#include "pycore_hashtable.h"
 #include "frameobject.h"          // PyFrame_GetBack()
 
 #include "clinic/_tracemalloc.c.h"
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index 73274ac9acf557..b6b0cf3e991ba7 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -181,6 +181,7 @@
     <ClInclude Include="..\Include\internal\pycore_getopt.h" />
     <ClInclude Include="..\Include\internal\pycore_gil.h" />
     <ClInclude Include="..\Include\internal\pycore_hamt.h" />
+    <ClInclude Include="..\Include\internal\pycore_hashtable.h" />
     <ClInclude Include="..\Include\internal\pycore_import.h" />
     <ClInclude Include="..\Include\internal\pycore_initconfig.h" />
     <ClInclude Include="..\Include\internal\pycore_interp.h" />
@@ -335,7 +336,6 @@
     <ClCompile Include="..\Modules\errnomodule.c" />
     <ClCompile Include="..\Modules\faulthandler.c" />
     <ClCompile Include="..\Modules\gcmodule.c" />
-    <ClCompile Include="..\Modules\hashtable.c" />
     <ClCompile Include="..\Modules\itertoolsmodule.c" />
     <ClCompile Include="..\Modules\main.c" />
     <ClCompile Include="..\Modules\mathmodule.c" />
@@ -462,6 +462,7 @@
     <ClCompile Include="..\Python\getversion.c" />
     <ClCompile Include="..\Python\graminit.c" />
     <ClCompile Include="..\Python\hamt.c" />
+    <ClCompile Include="..\Python\hashtable.c" />
     <ClCompile Include="..\Python\import.c" />
     <ClCompile Include="..\Python\importdl.c" />
     <ClCompile Include="..\Python\initconfig.c" />
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index 254c8fbbea5fb8..10dfffba6113e5 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -237,6 +237,9 @@
     <ClInclude Include="..\Include\internal\pycore_hamt.h">
       <Filter>Include</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_hashtable.h">
+      <Filter>Include</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_import.h">
       <Filter>Include</Filter>
     </ClInclude>
@@ -1034,6 +1037,9 @@
     <ClCompile Include="..\Python\hamt.h">
       <Filter>Python</Filter>
     </ClCompile>
+    <ClCompile Include="..\Python\hashtable.c">
+      <Filter>Modules</Filter>
+    </ClCompile>
     <ClCompile Include="..\Python\import.c">
       <Filter>Python</Filter>
     </ClCompile>
@@ -1142,9 +1148,6 @@
     <ClCompile Include="..\Modules\_tracemalloc.c">
       <Filter>Modules</Filter>
     </ClCompile>
-    <ClCompile Include="..\Modules\hashtable.c">
-      <Filter>Modules</Filter>
-    </ClCompile>
     <ClCompile Include="..\PC\invalid_parameter_handler.c">
       <Filter>PC</Filter>
     </ClCompile>
diff --git a/Modules/hashtable.c b/Python/hashtable.c
similarity index 99%
rename from Modules/hashtable.c
rename to Python/hashtable.c
index 4a36a1e71cdd05..22b84590105f9e 100644
--- a/Modules/hashtable.c
+++ b/Python/hashtable.c
@@ -45,7 +45,7 @@
 */
 
 #include "Python.h"
-#include "hashtable.h"
+#include "pycore_hashtable.h"
 
 #define HASHTABLE_MIN_SIZE 16
 #define HASHTABLE_HIGH 0.50
diff --git a/Python/marshal.c b/Python/marshal.c
index b4429aea502d3f..d2bff524f30dde 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -12,7 +12,7 @@
 #include "longintrepr.h"
 #include "code.h"
 #include "marshal.h"
-#include "../Modules/hashtable.h"
+#include "pycore_hashtable.h"
 
 /*[clinic input]
 module marshal

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