[SIGAR-62] stub swap.page_{in,out}

include/sigar.h

@@ -134,7 +134,9 @@ typedef struct {
     sigar_uint64_t
         total,
         used, 
-        free;
+        free,
+        page_in,
+        page_out;
 } sigar_swap_t;
 
 SIGAR_DECLARE(int) sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap);

src/os/aix/aix_sigar.c

@@ -684,6 +684,8 @@ static int sigar_swap_get_perfstat(sigar_t *sigar, sigar_swap_t *swap)
 
 int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
 {
+    swap->page_in = swap->page_out = -1;
+
     if (sigar_perfstat_init(sigar) == SIGAR_OK) {
         sigar_log(sigar, SIGAR_LOG_DEBUG, "[swap] using libperfstat");
         return sigar_swap_get_perfstat(sigar, swap);

src/os/darwin/darwin_sigar.c

@@ -450,6 +450,7 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
 
     swap->free = swap->total - swap->used;
 
+    swap->page_in = swap->page_out = -1;
 #elif defined(__FreeBSD__)
     struct kvm_swap kswap[1];
 
@@ -473,6 +474,8 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     swap->total = kswap[0].ksw_total * sigar->pagesize;
     swap->used  = kswap[0].ksw_used * sigar->pagesize;
     swap->free  = swap->total - swap->used;
+
+    swap->page_in = swap->page_out = -1;
 #else
     /*XXX OpenBSD*/
 #endif

src/os/hpux/hpux_sigar.c

@@ -116,7 +116,9 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     }
 
     swap->used = swap->total - swap->free;
-    
+
+    swap->page_in = swap->page_out = -1;    
+
     return SIGAR_OK;
 }
 

src/os/linux/linux_sigar.c

@@ -438,6 +438,8 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     swap->free   = sigar_meminfo(buffer, MEMINFO_PARAM("SwapFree"));
     swap->used   = swap->total - swap->free;
 
+    swap->page_in = swap->page_out = -1;
+
     return SIGAR_OK;
 }
 

src/os/netware/netware_sigar.c

@@ -130,6 +130,7 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     swap->used  = info.SwapPageCount * PAGESIZE;
     swap->free  = info.SwapFreeCount * PAGESIZE;
     swap->total = swap->used + swap->free;
+    swap->page_in = swap->page_out = -1;
 
     return SIGAR_OK;
 }

src/os/osf1/osf1_sigar.c

@@ -86,6 +86,8 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
 
     swap->used   = swap->total - swap->free;
 
+    swap->page_in = swap->page_out = -1;
+
     return SIGAR_OK;
 }
 

src/os/solaris/solaris_sigar.c

@@ -246,6 +246,8 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     swap->free  <<= sigar->pagesize;
     swap->used  <<= sigar->pagesize;
 
+    swap->page_in = swap->page_out = -1;
+
     return SIGAR_OK;
 }
 

src/os/stub/stub_sigar.c

@@ -37,6 +37,8 @@ int sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
     swap->total  = -1;
     swap->used   = -1;
     swap->free   = -1;
+    swap->page_in = -1;
+    swap->page_out = -1;
 
     return SIGAR_OK;
 }

src/os/win32/win32_sigar.c

@@ -545,6 +545,8 @@ SIGAR_DECLARE(int) sigar_swap_get(sigar_t *sigar, sigar_swap_t *swap)
 
     swap->used = swap->total - swap->free;
 
+    swap->page_in = swap->page_out = -1;
+
     return SIGAR_OK;
 }