1 /*
   2  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
  26 #define OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
  27 
  28 #include "runtime/os.hpp"
  29 
  30 // System includes
  31 #include <sys/param.h>
  32 #include <dlfcn.h>
  33 #include <sys/socket.h>
  34 #include <poll.h>
  35 #include <sys/filio.h>
  36 #include <unistd.h>
  37 #include <netdb.h>
  38 #include <setjmp.h>
  39 
  40 // File names are case-insensitive on windows only
  41 inline int os::file_name_strncmp(const char* s1, const char* s2, size_t num) {
  42   return strncmp(s1, s2, num);
  43 }
  44 
  45 inline bool os::uses_stack_guard_pages() {
  46   return true;
  47 }
  48 
  49 inline bool os::must_commit_stack_guard_pages() {
  50   assert(uses_stack_guard_pages(), "sanity check");
  51   int r = thr_main() ;
  52   guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
  53   return r;
  54 }
  55 
  56 
  57 // On Solaris, reservations are made on a page by page basis, nothing to do.
  58 inline void os::pd_split_reserved_memory(char *base, size_t size,
  59                                       size_t split, bool realloc) {
  60 }
  61 
  62 
  63 // Bang the shadow pages if they need to be touched to be mapped.
  64 inline void os::map_stack_shadow_pages(address sp) {
  65 }
  66 
  67 inline void os::dll_unload(void *lib) { ::dlclose(lib); }
  68 
  69 inline const int os::default_file_open_flags() { return 0;}
  70 
  71 //////////////////////////////////////////////////////////////////////////////
  72 ////////////////////////////////////////////////////////////////////////////////
  73 
  74 // macros for restartable system calls
  75 
  76 #define RESTARTABLE(_cmd, _result) do { \
  77   do { \
  78     _result = _cmd; \
  79   } while((_result == OS_ERR) && (errno == EINTR)); \
  80 } while(false)
  81 
  82 #define RESTARTABLE_RETURN_INT(_cmd) do { \
  83   int _result; \
  84   RESTARTABLE(_cmd, _result); \
  85   return _result; \
  86 } while(false)
  87 
  88 inline bool os::numa_has_static_binding()   { return false; }
  89 inline bool os::numa_has_group_homing()     { return true;  }
  90 
  91 inline int    os::socket(int domain, int type, int protocol) {
  92   return ::socket(domain, type, protocol);
  93 }
  94 
  95 inline struct hostent* os::get_host_by_name(char* name) {
  96   return ::gethostbyname(name);
  97 }
  98 
  99 inline bool os::supports_monotonic_clock() {
 100   // javaTimeNanos() is monotonic on Solaris, see getTimeNanos() comments
 101   return true;
 102 }
 103 
 104 inline void os::exit(int num) {
 105   ::exit(num);
 106 }
 107 
 108 #endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP