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comparison src/os/posix/vm/os_posix.cpp @ 12117:f92b82d454fa

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8014135: The JVMTI specification does not conform to recent changes in JNI specification Summary: Added support for statically linked agents Reviewed-by: sspitsyn, bobv, coleenp
author bpittore
date Fri, 23 Aug 2013 20:33:02 -0400
parents 5e3b6f79d280
children c636758ea616 e2722a66aba7
comparison
equal deleted inserted replaced
12094:73921c720b94 12117:f92b82d454fa
1 /* 1 /*
2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. 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.
258 258
259 FILE* os::open(int fd, const char* mode) { 259 FILE* os::open(int fd, const char* mode) {
260 return ::fdopen(fd, mode); 260 return ::fdopen(fd, mode);
261 } 261 }
262 262
263 void* os::get_default_process_handle() {
264 return (void*)::dlopen(NULL, RTLD_LAZY);
265 }
266
267 // Builds a platform dependent Agent_OnLoad_<lib_name> function name
268 // which is used to find statically linked in agents.
269 // Parameters:
270 // sym_name: Symbol in library we are looking for
271 // lib_name: Name of library to look in, NULL for shared libs.
272 // is_absolute_path == true if lib_name is absolute path to agent
273 // such as "/a/b/libL.so"
274 // == false if only the base name of the library is passed in
275 // such as "L"
276 char* os::build_agent_function_name(const char *sym_name, const char *lib_name,
277 bool is_absolute_path) {
278 char *agent_entry_name;
279 size_t len;
280 size_t name_len;
281 size_t prefix_len = strlen(JNI_LIB_PREFIX);
282 size_t suffix_len = strlen(JNI_LIB_SUFFIX);
283 const char *start;
284
285 if (lib_name != NULL) {
286 len = name_len = strlen(lib_name);
287 if (is_absolute_path) {
288 // Need to strip path, prefix and suffix
289 if ((start = strrchr(lib_name, *os::file_separator())) != NULL) {
290 lib_name = ++start;
291 }
292 if (len <= (prefix_len + suffix_len)) {
293 return NULL;
294 }
295 lib_name += prefix_len;
296 name_len = strlen(lib_name) - suffix_len;
297 }
298 }
299 len = (lib_name != NULL ? name_len : 0) + strlen(sym_name) + 2;
300 agent_entry_name = NEW_C_HEAP_ARRAY_RETURN_NULL(char, len, mtThread);
301 if (agent_entry_name == NULL) {
302 return NULL;
303 }
304 strcpy(agent_entry_name, sym_name);
305 if (lib_name != NULL) {
306 strcat(agent_entry_name, "_");
307 strncat(agent_entry_name, lib_name, name_len);
308 }
309 return agent_entry_name;
310 }
311
263 os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() { 312 os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() {
264 assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread"); 313 assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread");
265 } 314 }
266 315
267 /* 316 /*