src/os/linux/vm/os_linux.hpp

rev 8517 : 8078513: [linux]  Clean up code relevant to LinuxThreads implementation
Reviewed-by: dholmes, sla, coleenp

*** 1,7 ****
  /*
!  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 25,37 ****
  #ifndef OS_LINUX_VM_OS_LINUX_HPP
  #define OS_LINUX_VM_OS_LINUX_HPP
  
  // Linux_OS defines the interface to Linux operating systems
  
- // pthread_getattr_np comes with LinuxThreads-0.9-7 on RedHat 7.1
- typedef int (*pthread_getattr_func_type)(pthread_t, pthread_attr_t *);
- 
  // Information about the protection of the page at address '0' on this os.
  static bool zero_page_read_protected() { return true; }
  
  class Linux {
    friend class os;
--- 25,34 ----
*** 61,72 ****
    static uintptr_t _initial_thread_stack_size;
  
    static const char *_glibc_version;
    static const char *_libpthread_version;
  
-   static bool _is_floating_stack;
-   static bool _is_NPTL;
    static bool _supports_fast_thread_cpu_time;
  
    static GrowableArray<int>* _cpu_to_node;
  
   protected:
--- 58,67 ----
*** 88,101 ****
    static void set_glibc_version(const char *s)      { _glibc_version = s; }
    static void set_libpthread_version(const char *s) { _libpthread_version = s; }
  
    static bool supports_variable_stack_size();
  
-   static void set_is_NPTL()                   { _is_NPTL = true;  }
-   static void set_is_LinuxThreads()           { _is_NPTL = false; }
-   static void set_is_floating_stack()         { _is_floating_stack = true; }
- 
    static void rebuild_cpu_to_node_map();
    static GrowableArray<int>* cpu_to_node()    { return _cpu_to_node; }
  
    static size_t find_large_page_size();
    static size_t setup_large_page_size();
--- 83,92 ----
*** 176,193 ****
  
    // GNU libc and libpthread version strings
    static const char *glibc_version()          { return _glibc_version; }
    static const char *libpthread_version()     { return _libpthread_version; }
  
-   // NPTL or LinuxThreads?
-   static bool is_LinuxThreads()               { return !_is_NPTL; }
-   static bool is_NPTL()                       { return _is_NPTL;  }
- 
-   // NPTL is always floating stack. LinuxThreads could be using floating
-   // stack or fixed stack.
-   static bool is_floating_stack()             { return _is_floating_stack; }
- 
    static void libpthread_init();
    static bool libnuma_init();
    static void* libnuma_dlsym(void* handle, const char* name);
    // Minimum stack size a thread can be created with (allowing
    // the VM to completely create the thread and enter user code)
--- 167,176 ----
*** 232,244 ****
  
    // Stack repair handling
  
    // none present
  
-   // LinuxThreads work-around for 6292965
-   static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
- 
   private:
    typedef int (*sched_getcpu_func_t)(void);
    typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
    typedef int (*numa_max_node_func_t)(void);
    typedef int (*numa_available_func_t)(void);
--- 215,224 ----