*: Use `extern "C"` in all headers

We are going to add C++ parts to wendelin.core soon.
Mark all current functionality with `extern "C"` as a preparatory step.

include/wendelin/bigfile/file.h

@@ -2,7 +2,7 @@
 #define _WENDELIN_BIGFILE_FILE_H_
 
 /* Wendelin.bigfile | Base file class
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -32,6 +32,10 @@
 #include <stddef.h>
 #include <wendelin/bigfile/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 
 /* BigFile base class
  *
@@ -66,5 +70,8 @@ struct bigfile_ops {
     void (*release)  (BigFile *file);
 };
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif

include/wendelin/bigfile/pagemap.h

@@ -2,7 +2,7 @@
 #define _WENDELIN_BIGFILE_PAGEMAP_H_
 
 /* Wendelin.bigfile | Pgoffset -> page mapping
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -55,6 +55,10 @@
 
 #include <wendelin/bigfile/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct Page Page;
 
 
@@ -247,5 +251,9 @@ void  pagemap_clear(PageMap *pmap);
                     /* - also it can say break and break the whole pagemap  */  \
                     /*   iteration                                          */
 
+#ifdef __cplusplus
+}
+#endif
+
 
 #endif

include/wendelin/bigfile/ram.h

@@ -40,6 +40,10 @@
 #include <wendelin/list.h>
 #include <wendelin/bigfile/types.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 
 typedef struct RAMH RAMH;
 typedef struct Page Page;
@@ -195,4 +199,8 @@ struct ram_type {
 void ram_register_type(const struct ram_type *ram_type);
 
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

include/wendelin/bigfile/types.h

@@ -2,7 +2,7 @@
 #define _WENDELIN_BIGFILE_TYPES_H_
 
 /* Wendelin.bigfile | Basic types definition
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -24,7 +24,15 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef uint64_t pgoff_t;       /* page # in file */
 typedef uint64_t blk_t;         /* block # in file */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

include/wendelin/bigfile/virtmem.h

@@ -2,7 +2,7 @@
 #define _WENDELIN_BIGFILE_VIRTMEM_H_
 
 /* Wendelin.bigfile | Virtual memory
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -37,6 +37,10 @@
 #include <wendelin/bigfile/pagemap.h>
 #include <ccan/bitmap/bitmap.h> // XXX can't forward-decl for bitmap
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct RAM RAM;
 typedef struct RAMH RAMH;
 typedef struct Page Page;
@@ -332,5 +336,8 @@ void virt_lock_hookgil(const VirtGilHooks *gilhooks);
 /* what happens on out-of-memory */
 void OOM(void);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif

include/wendelin/bug.h

@@ -22,6 +22,10 @@
  * See https://www.nexedi.com/licensing for rationale and options.
  */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 
 // XXX maybe not needed - just go with std assert()
 
@@ -71,4 +75,8 @@ void __bug_fail(const char *, const char *, unsigned, const char *)
     __attribute__((noreturn));
 
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

include/wendelin/compat_py2.h

 #ifndef _WENDELIN_COMPAT_PY2_H
 #define _WENDELIN_COMPAT_PY2_H
 
+/* Wendelin. Python2 compatibility
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
+ *                          Kirill Smelkov <kirr@nexedi.com>
+ *
+ * This program is free software: you can Use, Study, Modify and Redistribute
+ * it under the terms of the GNU General Public License version 3, or (at your
+ * option) any later version, as published by the Free Software Foundation.
+ *
+ * You can also Link and Combine this program with other software covered by
+ * the terms of any of the Free Software licenses or any of the Open Source
+ * Initiative approved licenses and Convey the resulting work. Corresponding
+ * source of such a combination shall include the source code for all other
+ * software used.
+ *
+ * This program is distributed WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See COPYING file for full licensing terms.
+ * See https://www.nexedi.com/licensing for rationale and options.
+ */
+
 /* compatibility with python2 */
 #include <Python.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 /* in python2 it was indicating support for memoryview */
 #ifndef Py_TPFLAGS_HAVE_NEWBUFFER
 # define Py_TPFLAGS_HAVE_NEWBUFFER  0L
@@ -76,4 +102,9 @@ static inline PyThreadState * _PyThreadState_UncheckedGet(void)
 # error "You are using CPython 3.5.X series. Upgrade your CPython to >= 3.5.2 to get _PyThreadState_UncheckedGet() support."
 #endif
 
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif

include/wendelin/utils.h

@@ -26,6 +26,9 @@
 #include <stdlib.h>
 #include <pthread.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /* compile-time exact ilog2(x); x must be 2^k */
 #define BUILD_ILOG2_EXACT(x) (  \
@@ -85,4 +88,8 @@ void xpthread_sigmask(int how, const sigset_t *set, sigset_t *oldset);
 void xpthread_mutex_lock(pthread_mutex_t *);
 void xpthread_mutex_unlock(pthread_mutex_t *);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

t/t_utils.h

@@ -2,7 +2,7 @@
 #define _WENDELIN_TESTING_UTILS_H_
 
 /* Wendelin.bigfile | various testing utilities
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -24,6 +24,11 @@
 
 #include <wendelin/bigfile/ram.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
 /* access to vma memory as byte[] and blk_t[] */
 #define b(vma, idx) ( ((volatile uint8_t *)vma->addr_start) [ idx ] )
 #define B(vma, idx) ( ((volatile blk_t *)vma->addr_start)   [ idx ] )
@@ -46,4 +51,9 @@ RAMLimited *ram_limited_new(RAM *backend, size_t alloc_max);
 /* current time as float */
 double microtime();
 
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif