Use nanosleep instead of usleep

So not to rely on the non-standard unistd.h header

2 files changed, 13 insertions, 3 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 32f717a2..4955d250 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -137,8 +137,8 @@ IF(NOT "${HAVE_WINDOWS_H}")
         MESSAGE(FATAL_ERROR "No timing function found!")
     ENDIF()
 
-    CHECK_FUNCTION_EXISTS(usleep HAVE_USLEEP)
-    IF(NOT "${HAVE_USLEEP}")
+    CHECK_FUNCTION_EXISTS(nanosleep HAVE_NANOSLEEP)
+    IF(NOT "${HAVE_NANOSLEEP}")
         MESSAGE(FATAL_ERROR "No sleep function found!")
     ENDIF()
 
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 113101e4..c238a3a9 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -14,6 +14,8 @@
 #include <assert.h>
 #include <pthread.h>
 #include <sys/time.h>
+#include <time.h>
+#include <errno.h>
 
 #define IsBadWritePtr(a,b) (0)
 
@@ -68,7 +70,15 @@ static inline ALuint timeGetTime(void)
     return tv.tv_usec/1000 + tv.tv_sec*1000;
 }
 
-#define Sleep(x) ((void)usleep((unsigned int)x*1000))
+static inline void Sleep(ALuint t)
+{
+    struct timespec tv, rem;
+    tv.tv_nsec = (t*1000000)%1000000000;
+    tv.tv_sec = t/1000;
+
+    while(nanosleep(&tv, &rem) == -1 && errno == EINTR)
+        tv = rem;
+}
 #define min(x,y) (((x)<(y))?(x):(y))
 #define max(x,y) (((x)>(y))?(x):(y))
 #endif