# HG changeset patch
# User Sam Lantinga <slouken@libsdl.org>
# Date 1296190005 28800
# Node ID b3f075368b1fbcbcfcfa5289a4bf848c03c49c1e
# Parent  edd0f0617be4a3cc6a093084d3744b0a2ca48a11
Added API function to get CPU cache line size.

diff -r edd0f0617be4 -r b3f075368b1f include/SDL_cpuinfo.h
--- a/include/SDL_cpuinfo.h	Thu Jan 27 20:37:54 2011 -0800
+++ b/include/SDL_cpuinfo.h	Thu Jan 27 20:46:45 2011 -0800
@@ -52,6 +52,14 @@
 extern DECLSPEC int SDLCALL SDL_GetCPUCount(void);
 
 /**
+ *  This function returns the L1 cache line size of the CPU
+ *
+ *  This is useful for determining multi-threaded structure padding
+ *  or SIMD prefetch sizes.
+ */
+extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void);
+
+/**
  *  This function returns true if the CPU has the RDTSC instruction.
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void);
diff -r edd0f0617be4 -r b3f075368b1f src/cpuinfo/SDL_cpuinfo.c
--- a/src/cpuinfo/SDL_cpuinfo.c	Thu Jan 27 20:37:54 2011 -0800
+++ b/src/cpuinfo/SDL_cpuinfo.c	Thu Jan 27 20:46:45 2011 -0800
@@ -304,7 +304,7 @@
 static int SDL_CPUCount = 0;
 
 int
-SDL_GetCPUCount()
+SDL_GetCPUCount(void)
 {
     if (!SDL_CPUCount) {
 #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
@@ -335,7 +335,7 @@
 
 /* Oh, such a sweet sweet trick, just not very useful. :) */
 static const char *
-SDL_GetCPUType()
+SDL_GetCPUType(void)
 {
     static char SDL_CPUType[13];
 
@@ -366,7 +366,7 @@
 }
 
 static const char *
-SDL_GetCPUName()
+SDL_GetCPUName(void)
 {
     static char SDL_CPUName[48];
 
@@ -437,8 +437,8 @@
     return SDL_CPUName;
 }
 
-static int
-SDL_GetCPUCacheLineSize()
+int
+SDL_GetCPUCacheLineSize(void)
 {
     const char *cpuType = SDL_GetCPUType();