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Port the atomic_fetchadd_int function for use on 5.X.

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Reported by:	pointyhat via pav
This commit is contained in:
Joe Marcus Clarke 2008-03-02 06:03:38 +00:00
parent bb2a641b04
commit 864ba2de5d
Notes: svn2git 2021-03-31 03:12:20 +00:00 
svn path=/head/; revision=208305
1 changed files with 34 additions and 2 deletions
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36
audio/pulseaudio/files/patch-src_pulsecore_atomic.h
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@ -1,6 +1,6 @@
--- src/pulsecore/atomic.h.orig 2008-01-23 19:44:20.000000000 -0500
+++ src/pulsecore/atomic.h 2008-02-25 14:02:59.000000000 -0500
@@ -106,6 +106,76 @@ static inline int pa_atomic_ptr_cmpxchg(
+++ src/pulsecore/atomic.h 2008-03-02 01:02:20.000000000 -0500
@@ -106,6 +106,108 @@ static inline int pa_atomic_ptr_cmpxchg(
return __sync_bool_compare_and_swap(&a->value, (long) old_p, (long) new_p);
}
@ -8,8 +8,40 @@
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <machine/atomic.h>
+
+#if __FreeBSD_version < 600000
+#if defined(__i386__) || defined(__amd64__)
+static inline u_int
+atomic_fetchadd_int(volatile u_int *p, u_int v)
+{
+ __asm __volatile(
+ " " MPLOCKED " "
+ " xaddl %0, %1 ; "
+ "# atomic_fetchadd_int"
+ : "+r" (v),
+ "=m" (*p)
+ : "m" (*p));
+
+ return (v);
+}
+#elif defined(__sparc64__)
+#define atomic_fetchadd_int atomic_add_int
+#elif defined(__ia64__)
+static inline uint32_t
+atomic_fetchadd_int(volatile uint32_t *p, uint32_t v)
+{
+ uint32_t value;
+
+ do {
+ value = *p;
+ } while (!atomic_cmpset_32(p, value, value + v));
+ return (value);
+}
+#endif
+#endif
+
+typedef struct pa_atomic {
+ volatile unsigned long value;
+} pa_atomic_t;