really create glitch-free branch

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2120 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 90 insertions, 0 deletions

diff --git a/src/pulsecore/gccmacro.h b/src/pulsecore/gccmacro.h
new file mode 100644
index 00000000..f94a8c45
--- /dev/null
+++ b/src/pulsecore/gccmacro.h
@@ -0,0 +1,90 @@
+#ifndef foopulsegccmacrohfoo
+#define foopulsegccmacrohfoo
+
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+
+  PulseAudio 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 Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef __GNUC__
+#define PA_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b)))
+#else
+/** If we're in GNU C, use some magic for detecting invalid format strings */
+#define PA_GCC_PRINTF_ATTR(a,b)
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#define PA_GCC_SENTINEL __attribute__ ((sentinel))
+#else
+/** Macro for usage of GCC's sentinel compilation warnings */
+#define PA_GCC_SENTINEL
+#endif
+
+#ifdef __GNUC__
+#define PA_GCC_NORETURN __attribute__((noreturn))
+#else
+/** Macro for no-return functions */
+#define PA_GCC_NORETURN
+#endif
+
+#ifdef __GNUC__
+#define PA_GCC_UNUSED __attribute__ ((unused))
+#else
+/** Macro for not used parameter */
+#define PA_GCC_UNUSED
+#endif
+
+#ifdef __GNUC__
+#define PA_GCC_DESTRUCTOR __attribute__ ((destructor))
+#else
+/** Call this function when process terminates */
+#define PA_GCC_DESTRUCTOR
+#endif
+
+#ifndef PA_GCC_PURE
+#ifdef __GNUC__
+#define PA_GCC_PURE __attribute__ ((pure))
+#else
+/** This function's return value depends only the arguments list and global state **/
+#define PA_GCC_PURE
+#endif
+#endif
+
+#ifndef PA_GCC_CONST
+#ifdef __GNUC__
+#define PA_GCC_CONST __attribute__ ((const))
+#else
+/** This function's return value depends only the arguments list (stricter version of PA_GCC_PURE) **/
+#define PA_GCC_CONST
+#endif
+#endif
+
+#ifndef PA_LIKELY
+#ifdef __GNUC__
+#define PA_LIKELY(x) (__builtin_expect(!!(x),1))
+#define PA_UNLIKELY(x) (__builtin_expect((x),0))
+#else
+#define PA_LIKELY(x) (x)
+#define PA_UNLIKELY(x) (x)
+#endif
+#endif
+
+#endif