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8078513: [linux] Clean up code relevant to LinuxThreads implementation

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Reviewed-by: dholmes, sla, coleenp, simonis
This commit is contained in:
Thomas Stuefe 2015-06-22 19:21:04 -04:00
parent 5b6281adb8
commit b46373e827
10 changed files with 58 additions and 350 deletions
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22
hotspot/src/os/linux/vm/os_linux.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
* 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
@ -27,9 +27,6 @@
// 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; }
@ -63,8 +60,6 @@ class Linux {
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;
@ -90,10 +85,6 @@ class Linux {
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; }
@ -178,14 +169,6 @@ class Linux {
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);
@ -234,9 +217,6 @@ class Linux {
// 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);