getting rss size implementation for netbsd (#7293)

1 files changed, 20 insertions, 0 deletions

diff --git a/src/zmalloc.c b/src/zmalloc.c
index cefa39aa8..01cb0f917 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -304,6 +304,26 @@ size_t zmalloc_get_rss(void) {
 
     return 0L;
 }
+#elif defined(__NetBSD__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <unistd.h>
+
+size_t zmalloc_get_rss(void) {
+    struct kinfo_proc2 info;
+    size_t infolen = sizeof(info);
+    int mib[6];
+    mib[0] = CTL_KERN;
+    mib[1] = KERN_PROC;
+    mib[2] = KERN_PROC_PID;
+    mib[3] = getpid();
+    mib[4] = sizeof(info);
+    mib[5] = 1;
+    if (sysctl(mib, 4, &info, &infolen, NULL, 0) == 0)
+        return (size_t)info.p_vm_rssize;
+
+    return 0L;
+}
 #else
 size_t zmalloc_get_rss(void) {
     /* If we can't get the RSS in an OS-specific way for this system just