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tweak the defines for memory barriers. This should fix the freebsd build, and adds proper memory barrier defines for msvc build. 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4175 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris 2007-02-09 02:05:46 +00:00
parent ed41805c17
commit ea3e61f3d8
1 changed files with 24 additions and 24 deletions
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48
src/mod/endpoints/mod_portaudio/pa_ringbuffer.c
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@ -71,7 +71,17 @@
*
****************/
#if defined(__APPLE__) || defined(__FreeBSD__)
#if defined(__VIA_HACK__)
#define NO_BARRIER
#endif
#if defined(NO_BARRIER)
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
#else
#if defined(__APPLE__) //|| defined(__FreeBSD__)
# include <libkern/OSAtomic.h>
/* Here are the memory barrier functions. Mac OS X and FreeBSD only provide
full memory barriers, so the three types of barriers are the same. */
@ -85,39 +95,29 @@
# define PaUtil_FullMemoryBarrier() asm volatile("sync":::"memory")
# define PaUtil_ReadMemoryBarrier() asm volatile("sync":::"memory")
# define PaUtil_WriteMemoryBarrier() asm volatile("sync":::"memory")
# elif defined(__VIA_HACK__)
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
# elif defined( __i386__ ) || defined( __i486__ ) || defined( __i586__ ) || defined( __i686__ ) || defined(__x86_64__)
# define PaUtil_FullMemoryBarrier() asm volatile("mfence":::"memory")
# define PaUtil_ReadMemoryBarrier() asm volatile("lfence":::"memory")
# define PaUtil_WriteMemoryBarrier() asm volatile("sfence":::"memory")
# else
# ifdef ALLOW_SMP_DANGERS
# warning Memory barriers not defined on this system or system unknown
# warning For SMP safety, you should fix this.
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
# else
# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
# endif
# endif
#else
# ifdef ALLOW_SMP_DANGERS
# ifndef _MSC_VER
# warning Memory barriers not defined on this system or system unknown
# warning For SMP safety, you should fix this.
# endif
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
# else
# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
# endif
#elif defined(_MSC_VER)
# include <intrin.h>
# pragma intrinsic(_ReadWriteBarrier)
# pragma intrinsic(_ReadBarrier)
# pragma intrinsic(_WriteBarrier)
# define PaUtil_FullMemoryBarrier() _ReadWriteBarrier()
# define PaUtil_ReadMemoryBarrier() _ReadBarrier()
# define PaUtil_WriteMemoryBarrier() _WriteBarrier()
#else
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
#endif
#endif
/***************************************************************************
* Initialize FIFO.
* numBytes must be power of 2, returns -1 if not.