8273815: move have_special_privileges to os_posix for POSIX platforms

Reviewed-by: mdoerr, stuefe, dholmes

src/hotspot/os/aix/os_aix.cpp

@@ -267,18 +267,6 @@ julong os::physical_memory() {
   return Aix::physical_memory();
 }
 
-// Return true if user is running as root.
-
-bool os::have_special_privileges() {
-  static bool init = false;
-  static bool privileges = false;
-  if (!init) {
-    privileges = (getuid() != geteuid()) || (getgid() != getegid());
-    init = true;
-  }
-  return privileges;
-}
-
 // Helper function, emulates disclaim64 using multiple 32bit disclaims
 // because we cannot use disclaim64() on AS/400 and old AIX releases.
 static bool my_disclaim64(char* addr, size_t size) {

src/hotspot/os/bsd/os_bsd.cpp

@@ -179,20 +179,6 @@ julong os::physical_memory() {
   return Bsd::physical_memory();
 }
 
-// Return true if user is running as root.
-
-bool os::have_special_privileges() {
-  static bool init = false;
-  static bool privileges = false;
-  if (!init) {
-    privileges = (getuid() != geteuid()) || (getgid() != getegid());
-    init = true;
-  }
-  return privileges;
-}
-
-
-
 // Cpu architecture string
 #if   defined(ZERO)
 static char cpu_arch[] = ZERO_LIBARCH;

src/hotspot/os/linux/os_linux.cpp

@@ -308,19 +308,6 @@ bool os::Linux::get_tick_information(CPUPerfTicks* pticks, int which_logical_cpu
   return true;
 }
 
-// Return true if user is running as root.
-
-bool os::have_special_privileges() {
-  static bool init = false;
-  static bool privileges = false;
-  if (!init) {
-    privileges = (getuid() != geteuid()) || (getgid() != getegid());
-    init = true;
-  }
-  return privileges;
-}
-
-
 #ifndef SYS_gettid
 // i386: 224, ia64: 1105, amd64: 186, sparc: 143
   #ifdef __ia64__

src/hotspot/os/posix/os_posix.cpp

@@ -177,6 +177,12 @@ size_t os::lasterror(char *buf, size_t len) {
   return n;
 }
 
+// Return true if user is running as root.
+bool os::have_special_privileges() {
+  static bool privileges = (getuid() != geteuid()) || (getgid() != getegid());
+  return privileges;
+}
+
 void os::wait_for_keypress_at_exit(void) {
   // don't do anything on posix platforms
   return;