split internal.h into files

One day, I could not resist the way it was written.  I finally started
to make the code clean.  This changeset is the beginning of a series of
housekeeping commits.  It is a simple refactoring; split internal.h into
files, so that we can divide and concur in the upcoming commits.  No
lines of codes are either added or removed, except the obvious file
headers/footers.  The generated binary is identical to the one before.

1 files changed, 95 insertions, 0 deletions

diff --git a/internal/process.h b/internal/process.h
new file mode 100644
index 0000000000..8258f97f1b
--- /dev/null
+++ b/internal/process.h
@@ -0,0 +1,95 @@
+#ifndef INTERNAL_PROCESS_H /* -*- C -*- */
+#define INTERNAL_PROCESS_H
+/**
+ * @file
+ * @brief      Internal header for Process.
+ * @author     \@shyouhei
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+
+/* process.c */
+#define RB_MAX_GROUPS (65536)
+
+struct waitpid_state;
+struct rb_execarg {
+    union {
+        struct {
+            VALUE shell_script;
+        } sh;
+        struct {
+            VALUE command_name;
+            VALUE command_abspath; /* full path string or nil */
+            VALUE argv_str;
+            VALUE argv_buf;
+        } cmd;
+    } invoke;
+    VALUE redirect_fds;
+    VALUE envp_str;
+    VALUE envp_buf;
+    VALUE dup2_tmpbuf;
+    unsigned use_shell : 1;
+    unsigned pgroup_given : 1;
+    unsigned umask_given : 1;
+    unsigned unsetenv_others_given : 1;
+    unsigned unsetenv_others_do : 1;
+    unsigned close_others_given : 1;
+    unsigned close_others_do : 1;
+    unsigned chdir_given : 1;
+    unsigned new_pgroup_given : 1;
+    unsigned new_pgroup_flag : 1;
+    unsigned uid_given : 1;
+    unsigned gid_given : 1;
+    unsigned exception : 1;
+    unsigned exception_given : 1;
+    struct waitpid_state *waitpid_state; /* for async process management */
+    rb_pid_t pgroup_pgid; /* asis(-1), new pgroup(0), specified pgroup (0<V). */
+    VALUE rlimit_limits; /* Qfalse or [[rtype, softlim, hardlim], ...] */
+    mode_t umask_mask;
+    rb_uid_t uid;
+    rb_gid_t gid;
+    int close_others_maxhint;
+    VALUE fd_dup2;
+    VALUE fd_close;
+    VALUE fd_open;
+    VALUE fd_dup2_child;
+    VALUE env_modification; /* Qfalse or [[k1,v1], ...] */
+    VALUE path_env;
+    VALUE chdir_dir;
+};
+
+/* argv_str contains extra two elements.
+ * The beginning one is for /bin/sh used by exec_with_sh.
+ * The last one for terminating NULL used by execve.
+ * See rb_exec_fillarg() in process.c. */
+#define ARGVSTR2ARGV(argv_str) ((char **)RB_IMEMO_TMPBUF_PTR(argv_str) + 1)
+
+static inline size_t
+ARGVSTR2ARGC(VALUE argv_str)
+{
+    size_t i = 0;
+    char *const *p = ARGVSTR2ARGV(argv_str);
+    while (p[i++])
+        ;
+    return i - 1;
+}
+
+rb_pid_t rb_fork_ruby(int *status);
+void rb_last_status_clear(void);
+
+RUBY_SYMBOL_EXPORT_BEGIN
+/* process.c (export) */
+int rb_exec_async_signal_safe(const struct rb_execarg *e, char *errmsg, size_t errmsg_buflen);
+rb_pid_t rb_fork_async_signal_safe(int *status, int (*chfunc)(void*, char *, size_t), void *charg, VALUE fds, char *errmsg, size_t errmsg_buflen);
+VALUE rb_execarg_new(int argc, const VALUE *argv, int accept_shell, int allow_exc_opt);
+struct rb_execarg *rb_execarg_get(VALUE execarg_obj); /* dangerous.  needs GC guard. */
+int rb_execarg_addopt(VALUE execarg_obj, VALUE key, VALUE val);
+void rb_execarg_parent_start(VALUE execarg_obj);
+void rb_execarg_parent_end(VALUE execarg_obj);
+int rb_execarg_run_options(const struct rb_execarg *e, struct rb_execarg *s, char* errmsg, size_t errmsg_buflen);
+VALUE rb_execarg_extract_options(VALUE execarg_obj, VALUE opthash);
+void rb_execarg_setenv(VALUE execarg_obj, VALUE env);
+RUBY_SYMBOL_EXPORT_END
+#endif /* INTERNAL_PROCESS_H */