Add test for madvise() being declared in C++ code, because it is not

on Solaris even though it is available, and declare it ourselves in
that case. (Bug #7156)

configure.in

@@ -2043,6 +2043,13 @@ AC_CACHE_CHECK([style of gethost* routines], mysql_cv_gethost_style,
 AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 
+# Test whether madvise() is declared in C++ code -- it is not on some
+# systems, such as Solaris
+AC_CHECK_DECLS(madvise, [], [], [#if HAVE_SYS_MMAN_H
+#include <sys/types.h>
+#include <sys/mman.h>
+#endif])
+
 # Do not treat warnings as errors if we are linking against other libc
 # this is to work around gcc not being permissive on non-system includes
 # with respect to ANSI C++

include/my_global.h

@@ -310,6 +310,10 @@ C_MODE_END
 #undef setrlimit
 #define setrlimit cma_setrlimit64
 #endif
+/* Declare madvise where it is not declared for C++, like Solaris */
+#if HAVE_MADVISE && !HAVE_DECL_MADVISE && defined(__cplusplus)
+extern "C" int madvise(void *addr, size_t len, int behav);
+#endif
 
 #ifdef __QNXNTO__
 /* This has to be after include limits.h */

isam/extra.c

@@ -67,7 +67,7 @@ int nisam_extra(N_INFO *info, enum ha_extra_function function)
       break;
     }
 #endif
-#if defined(HAVE_MMAP) && defined(HAVE_MADVICE)
+#if defined(HAVE_MMAP) && defined(HAVE_MADVISE)
     if ((info->options & HA_OPTION_COMPRESS_RECORD))
     {
       pthread_mutex_lock(&info->s->intern_lock);
@@ -144,7 +144,7 @@ int nisam_extra(N_INFO *info, enum ha_extra_function function)
       info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
       error=end_io_cache(&info->rec_cache);
     }
-#if defined(HAVE_MMAP) && defined(HAVE_MADVICE)
+#if defined(HAVE_MMAP) && defined(HAVE_MADVISE)
     if (info->opt_flag & MEMMAP_USED)
       madvise(info->s->file_map,info->s->state.data_file_length,MADV_RANDOM);
 #endif

myisam/mi_extra.c

@@ -62,7 +62,7 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg)
     }
     if (share->base.blobs)
       mi_alloc_rec_buff(info, -1, &info->rec_buff);
-#if defined(HAVE_MMAP) && defined(HAVE_MADVICE)
+#if defined(HAVE_MMAP) && defined(HAVE_MADVISE)
     if (info->opt_flag & MEMMAP_USED)
       madvise(share->file_map,share->state.state.data_file_length,MADV_RANDOM);
 #endif
@@ -93,7 +93,7 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg)
       my_errno=EACCES;
       break;
     }
-#if defined(HAVE_MMAP) && defined(HAVE_MADVICE)
+#if defined(HAVE_MMAP) && defined(HAVE_MADVISE)
     if ((share->options & HA_OPTION_COMPRESS_RECORD))
     {
       pthread_mutex_lock(&share->intern_lock);
@@ -177,7 +177,7 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg)
       error=end_io_cache(&info->rec_cache);
       /* Sergei will insert full text index caching here */
     }
-#if defined(HAVE_MMAP) && defined(HAVE_MADVICE)
+#if defined(HAVE_MMAP) && defined(HAVE_MADVISE)
     if (info->opt_flag & MEMMAP_USED)
       madvise(share->file_map,share->state.state.data_file_length,MADV_RANDOM);
 #endif

sql/examples/ha_tina.cc

@@ -608,7 +608,9 @@ int ha_tina::rnd_init(bool scan)
   current_position= next_position= 0;
   records= 0;
   chain_ptr= chain;
+#ifdef HAVE_MADVISE
   (void)madvise(share->mapped_file,share->file_stat.st_size,MADV_SEQUENTIAL);
+#endif
 
   DBUG_RETURN(0);
 }