From 03557b9abaee78e9d1ef5cd236d32a7b3e75e6f8 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Wed, 19 Aug 2015 16:20:20 +0100 Subject: [PATCH] osdep.h: Add header comment Add a header comment to osdep.h, explaining what the header is for and some rules to avoid circular-include difficulties. Signed-off-by: Peter Maydell Reviewed-by: Daniel P. Berrange --- include/qemu/osdep.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 60ac27d195..ab3c8766b4 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -1,3 +1,27 @@ +/* + * OS includes and handling of OS dependencies + * + * This header exists to pull in some common system headers that + * most code in QEMU will want, and to fix up some possible issues with + * it (missing defines, Windows weirdness, and so on). + * + * To avoid getting into possible circular include dependencies, this + * file should not include any other QEMU headers, with the exceptions + * of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which + * are doing a similar job to this file and are under similar constraints. + * + * This header also contains prototypes for functions defined in + * os-*.c and util/oslib-*.c; those would probably be better split + * out into separate header files. + * + * In an ideal world this header would contain only: + * (1) things which everybody needs + * (2) things without which code would work on most platforms but + * fail to compile or misbehave on a minority of host OSes + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ #ifndef QEMU_OSDEP_H #define QEMU_OSDEP_H