decouple internal.h headers

Saves comitters' daily life by avoid #include-ing everything from
internal.h to make each file do so instead.  This would significantly
speed up incremental builds.

We take the following inclusion order in this changeset:

1.  "ruby/config.h", where _GNU_SOURCE is defined (must be the very
    first thing among everything).
2.  RUBY_EXTCONF_H if any.
3.  Standard C headers, sorted alphabetically.
4.  Other system headers, maybe guarded by #ifdef
5.  Everything else, sorted alphabetically.

Exceptions are those win32-related headers, which tend not be self-
containing (headers have inclusion order dependencies).

1 files changed, 35 insertions, 27 deletions

diff --git a/vm_core.h b/vm_core.h
index 12c3ac3775..8807c23b6f 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -46,6 +46,19 @@
 #define VMDEBUG 3
 #endif
 
+#include "ruby/config.h"
+
+#include <stddef.h>
+#include <signal.h>
+
+#ifdef HAVE_STDARG_PROTOTYPES
+#include <stdarg.h>
+#define va_init_list(a,b) va_start((a),(b))
+#else
+#include <varargs.h>
+#define va_init_list(a,b) va_start((a))
+#endif
+
 #include "ruby_assert.h"
 
 #if VM_CHECK_MODE > 0
@@ -57,27 +70,21 @@
 #define VM_UNREACHABLE(func) UNREACHABLE
 #endif
 
-#define RUBY_VM_THREAD_MODEL 2
-
-/*
- * implementation selector of get_insn_info algorithm
- *   0: linear search
- *   1: binary search
- *   2: succinct bitvector
- */
-#ifndef VM_INSN_INFO_TABLE_IMPL
-# define VM_INSN_INFO_TABLE_IMPL 2
-#endif
-
-#include "ruby/ruby.h"
-#include "ruby/st.h"
+#include <setjmp.h>
 
-#include "node.h"
-#include "vm_opts.h"
 #include "id.h"
+#include "internal.h"
+#include "internal/array.h"
+#include "internal/serial.h"
+#include "internal/stdbool.h"
+#include "ccan/list/list.h"
+#include "internal/vm.h"
 #include "method.h"
+#include "node.h"
+#include "ruby/ruby.h"
+#include "ruby/st.h"
 #include "ruby_atomic.h"
-#include "ccan/list/list.h"
+#include "vm_opts.h"
 
 #include "ruby/thread_native.h"
 #if   defined(_WIN32)
@@ -86,8 +93,17 @@
 #include "thread_pthread.h"
 #endif
 
-#include <setjmp.h>
-#include <signal.h>
+#define RUBY_VM_THREAD_MODEL 2
+
+/*
+ * implementation selector of get_insn_info algorithm
+ *   0: linear search
+ *   1: binary search
+ *   2: succinct bitvector
+ */
+#ifndef VM_INSN_INFO_TABLE_IMPL
+# define VM_INSN_INFO_TABLE_IMPL 2
+#endif
 
 #if defined(NSIG_MAX)           /* POSIX issue 8 */
 # undef NSIG
@@ -123,14 +139,6 @@
 /* define to 0 to test old code path */
 #define WAITPID_USE_SIGCHLD (RUBY_SIGCHLD || SIGCHLD_LOSSY)
 
-#ifdef HAVE_STDARG_PROTOTYPES
-#include <stdarg.h>
-#define va_init_list(a,b) va_start((a),(b))
-#else
-#include <varargs.h>
-#define va_init_list(a,b) va_start((a))
-#endif
-
 #if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) && defined(SA_SIGINFO) && !defined(__NetBSD__)
 #  define USE_SIGALTSTACK
 void *rb_register_sigaltstack(void);