add missing "extern C" qualifiers to a few headers for C++ linking; (t…

…witter#150)

fix a few typos/style deviations

include/cc_mm.h

@@ -17,6 +17,10 @@
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <cc_define.h>
 
 #include <stddef.h>
@@ -70,3 +74,7 @@ void * _cc_realloc_move(void *ptr, size_t size, const char *name, int line);
 void _cc_free(void *ptr, const char *name, int line);
 void * _cc_mmap(size_t size, const char *name, int line);
 int _cc_munmap(void *p, size_t size, const char *name, int line);
+
+#ifdef __cplusplus
+}
+#endif

include/cc_rbuf.h

@@ -21,6 +21,10 @@
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <cc_metric.h>
 
 #include <stdint.h>
@@ -86,3 +90,7 @@ size_t rbuf_wcap(struct rbuf *buf);
 size_t rbuf_read(void *dst, struct rbuf *src, size_t n);
 /* write from a buffer in memory to the rbuf */
 size_t rbuf_write(struct rbuf *dst, void *src, size_t n);
+
+#ifdef __cplusplus
+}
+#endif

include/cc_ring_array.h

@@ -26,6 +26,10 @@
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <cc_define.h>
 
 #include <stddef.h>
@@ -53,4 +57,9 @@ rstatus_i ring_array_pop(void *elem, struct ring_array *arr);
 
 /* creation/destruction */
 struct ring_array *ring_array_create(size_t elem_size, uint32_t cap);
+
 void ring_array_destroy(struct ring_array *arr);
+
+#ifdef __cplusplus
+}
+#endif

include/hash/cc_murmur3.h

@@ -16,11 +16,11 @@
  */
 
 /**
- * The cc_murmur3.[ch] are adapated from the canonical implementation of
+ * The cc_murmur3.[ch] are adapted from the canonical implementation of
  * MurmurHash3 by Austin Appleby, released as part of SMHasher:
  *   https://github.com/aappleby/smhasher
  *
- * Changes include renaming fuctions, removing MSVC-related code, adding "static"
+ * Changes include renaming functions, removing MSVC-related code, adding "static"
  * keyword to local-scope functions according to C language spec (original code is
  * in C++), to better fit them into the scope and style of ccommon
  *
@@ -29,11 +29,19 @@
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 
 
-void hash_murmur3_32 ( const void * key, int len, uint32_t seed, void * out );
+void hash_murmur3_32(const void *key, int len, uint32_t seed, void *out);
+
+void hash_murmur3_128_x86(const void *key, int len, uint32_t seed, void *out);
 
-void hash_murmur3_128_x86 ( const void * key, int len, uint32_t seed, void * out );
+void hash_murmur3_128_x64(const void *key, int len, uint32_t seed, void *out);
 
-void hash_murmur3_128_x64 ( const void * key, int len, uint32_t seed, void * out );
+#ifdef __cplusplus
+}
+#endif