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comparison src/share/vm/runtime/os.hpp @ 356:1ee8caae33af

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Merge
author tonyp
date Thu, 21 Aug 2008 23:36:31 -0400
parents 37f87013dfd8 d95b224e9f17
children 24fda36852ce
comparison
equal deleted inserted replaced
355:0edda524b58c 356:1ee8caae33af
1 /* 1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
203 size_t split, bool realloc); 203 size_t split, bool realloc);
204 static bool commit_memory(char* addr, size_t bytes); 204 static bool commit_memory(char* addr, size_t bytes);
205 static bool commit_memory(char* addr, size_t size, size_t alignment_hint); 205 static bool commit_memory(char* addr, size_t size, size_t alignment_hint);
206 static bool uncommit_memory(char* addr, size_t bytes); 206 static bool uncommit_memory(char* addr, size_t bytes);
207 static bool release_memory(char* addr, size_t bytes); 207 static bool release_memory(char* addr, size_t bytes);
208 static bool protect_memory(char* addr, size_t bytes); 208
209 enum ProtType { MEM_PROT_NONE, MEM_PROT_READ, MEM_PROT_RW, MEM_PROT_RWX };
210 static bool protect_memory(char* addr, size_t bytes, ProtType prot,
211 bool is_committed = false);
212
209 static bool guard_memory(char* addr, size_t bytes); 213 static bool guard_memory(char* addr, size_t bytes);
210 static bool unguard_memory(char* addr, size_t bytes); 214 static bool unguard_memory(char* addr, size_t bytes);
211 static char* map_memory(int fd, const char* file_name, size_t file_offset, 215 static char* map_memory(int fd, const char* file_name, size_t file_offset,
212 char *addr, size_t bytes, bool read_only = false, 216 char *addr, size_t bytes, bool read_only = false,
213 bool allow_exec = false); 217 bool allow_exec = false);
396 static const char* dll_file_extension(); 400 static const char* dll_file_extension();
397 401
398 static const char* get_temp_directory(); 402 static const char* get_temp_directory();
399 static const char* get_current_directory(char *buf, int buflen); 403 static const char* get_current_directory(char *buf, int buflen);
400 404
405 // Builds a platform-specific full library path given a ld path and lib name
406 static void dll_build_name(char* buffer, size_t size,
407 const char* pathname, const char* fname);
408
401 // Symbol lookup, find nearest function name; basically it implements 409 // Symbol lookup, find nearest function name; basically it implements
402 // dladdr() for all platforms. Name of the nearest function is copied 410 // dladdr() for all platforms. Name of the nearest function is copied
403 // to buf. Distance from its base address is returned as offset. 411 // to buf. Distance from its base address is returned as offset.
404 // If function name is not found, buf[0] is set to '\0' and offset is 412 // If function name is not found, buf[0] is set to '\0' and offset is
405 // set to -1. 413 // set to -1.
418 426
419 // Loads .dll/.so and 427 // Loads .dll/.so and
420 // in case of error it checks if .dll/.so was built for the 428 // in case of error it checks if .dll/.so was built for the
421 // same architecture as Hotspot is running on 429 // same architecture as Hotspot is running on
422 static void* dll_load(const char *name, char *ebuf, int ebuflen); 430 static void* dll_load(const char *name, char *ebuf, int ebuflen);
431
432 // lookup symbol in a shared library
433 static void* dll_lookup(void* handle, const char* name);
423 434
424 // Print out system information; they are called by fatal error handler. 435 // Print out system information; they are called by fatal error handler.
425 // Output format may be different on different platforms. 436 // Output format may be different on different platforms.
426 static void print_os_info(outputStream* st); 437 static void print_os_info(outputStream* st);
427 static void print_cpu_info(outputStream* st); 438 static void print_cpu_info(outputStream* st);