summaryrefslogtreecommitdiffstats
path: root/src/kmk/os.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
commit29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc (patch)
tree63ef546b10a81d461e5cf5ed9e98a68cd7dee1aa /src/kmk/os.h
parentInitial commit. (diff)
downloadkbuild-29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc.tar.xz
kbuild-29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc.zip
Adding upstream version 1:0.1.9998svn3589+dfsg.upstream/1%0.1.9998svn3589+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/kmk/os.h')
-rw-r--r--src/kmk/os.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/kmk/os.h b/src/kmk/os.h
new file mode 100644
index 0000000..c1a19e1
--- /dev/null
+++ b/src/kmk/os.h
@@ -0,0 +1,84 @@
+/* Declarations for operating system interfaces for GNU Make.
+Copyright (C) 2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>. */
+
+
+/* This section provides OS-specific functions to support the jobserver. */
+
+#ifdef MAKE_JOBSERVER
+
+/* Returns 1 if the jobserver is enabled, else 0. */
+unsigned int jobserver_enabled (void);
+
+/* Called in the master instance to set up the jobserver initially. */
+unsigned int jobserver_setup (int job_slots);
+
+/* Called in a child instance to connect to the jobserver. */
+unsigned int jobserver_parse_auth (const char* auth);
+
+/* Returns an allocated buffer used to pass to child instances. */
+char *jobserver_get_auth (void);
+
+/* Clear this instance's jobserver configuration. */
+void jobserver_clear (void);
+
+/* Recover all the jobserver tokens and return the number we got. */
+unsigned int jobserver_acquire_all (void);
+
+/* Release a jobserver token. If it fails and is_fatal is 1, fatal. */
+void jobserver_release (int is_fatal);
+
+/* Notify the jobserver that a child exited. */
+void jobserver_signal (void);
+
+/* Get ready to start a non-recursive child. */
+void jobserver_pre_child (int);
+
+/* Complete starting a non-recursive child. */
+void jobserver_post_child (int);
+
+/* Set up to acquire a new token. */
+void jobserver_pre_acquire (void);
+
+/* Wait until we can acquire a jobserver token.
+ TIMEOUT is 1 if we have other jobs waiting for the load to go down;
+ in this case we won't wait forever, so we can check the load.
+ Returns 1 if we got a token, or 0 if we stopped waiting due to a child
+ exiting or a timeout. */
+unsigned int jobserver_acquire (int timeout);
+
+#else
+
+#define jobserver_enabled() (0)
+#define jobserver_setup(_slots) (0)
+#define jobserver_parse_auth(_auth) (0)
+#define jobserver_get_auth() (NULL)
+#define jobserver_clear() (void)(0)
+#define jobserver_release(_fatal) (void)(0)
+#define jobserver_acquire_all() (0)
+#define jobserver_signal() (void)(0)
+#define jobserver_pre_child(_r) (void)(0)
+#define jobserver_post_child(_r) (void)(0)
+#define jobserver_pre_acquire() (void)(0)
+#define jobserver_acquire(_tmout) (0)
+
+#endif
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run. */
+#if !defined(VMD) && !defined(WINDOWS32) && !defined(_AMIGA) && !defined(__MSDOS__)
+int get_bad_stdin (void);
+#else
+# define get_bad_stdin() (-1)
+#endif