966 lines
27 KiB
C++
966 lines
27 KiB
C++
/*
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* Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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# include "incls/_precompiled.incl"
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# include "incls/_debug.cpp.incl"
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#ifndef ASSERT
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# ifdef _DEBUG
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// NOTE: don't turn the lines below into a comment -- if you're getting
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// a compile error here, change the settings to define ASSERT
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ASSERT should be defined when _DEBUG is defined. It is not intended to be used for debugging
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functions that do not slow down the system too much and thus can be left in optimized code.
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On the other hand, the code should not be included in a production version.
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# endif // _DEBUG
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#endif // ASSERT
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#ifdef _DEBUG
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# ifndef ASSERT
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configuration error: ASSERT must be defined in debug version
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# endif // ASSERT
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#endif // _DEBUG
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#ifdef PRODUCT
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# if -defined _DEBUG || -defined ASSERT
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configuration error: ASSERT et al. must not be defined in PRODUCT version
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# endif
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#endif // PRODUCT
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void warning(const char* format, ...) {
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// In case error happens before init or during shutdown
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if (tty == NULL) ostream_init();
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tty->print("%s warning: ", VM_Version::vm_name());
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va_list ap;
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va_start(ap, format);
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tty->vprint_cr(format, ap);
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va_end(ap);
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if (BreakAtWarning) BREAKPOINT;
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}
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#ifndef PRODUCT
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#define is_token_break(ch) (isspace(ch) || (ch) == ',')
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static const char* last_file_name = NULL;
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static int last_line_no = -1;
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// assert/guarantee/... may happen very early during VM initialization.
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// Don't rely on anything that is initialized by Threads::create_vm(). For
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// example, don't use tty.
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bool error_is_suppressed(const char* file_name, int line_no) {
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// The following 1-element cache requires that passed-in
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// file names are always only constant literals.
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if (file_name == last_file_name && line_no == last_line_no) return true;
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int file_name_len = (int)strlen(file_name);
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char separator = os::file_separator()[0];
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const char* base_name = strrchr(file_name, separator);
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if (base_name == NULL)
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base_name = file_name;
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// scan the SuppressErrorAt option
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const char* cp = SuppressErrorAt;
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for (;;) {
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const char* sfile;
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int sfile_len;
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int sline;
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bool noisy;
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while ((*cp) != '\0' && is_token_break(*cp)) cp++;
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if ((*cp) == '\0') break;
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sfile = cp;
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while ((*cp) != '\0' && !is_token_break(*cp) && (*cp) != ':') cp++;
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sfile_len = cp - sfile;
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if ((*cp) == ':') cp++;
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sline = 0;
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while ((*cp) != '\0' && isdigit(*cp)) {
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sline *= 10;
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sline += (*cp) - '0';
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cp++;
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}
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// "file:line!" means the assert suppression is not silent
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noisy = ((*cp) == '!');
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while ((*cp) != '\0' && !is_token_break(*cp)) cp++;
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// match the line
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if (sline != 0) {
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if (sline != line_no) continue;
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}
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// match the file
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if (sfile_len > 0) {
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const char* look = file_name;
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const char* look_max = file_name + file_name_len - sfile_len;
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const char* foundp;
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bool match = false;
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while (!match
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&& (foundp = strchr(look, sfile[0])) != NULL
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&& foundp <= look_max) {
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match = true;
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for (int i = 1; i < sfile_len; i++) {
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if (sfile[i] != foundp[i]) {
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match = false;
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break;
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}
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}
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look = foundp + 1;
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}
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if (!match) continue;
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}
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// got a match!
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if (noisy) {
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fdStream out(defaultStream::output_fd());
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out.print_raw("[error suppressed at ");
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out.print_raw(base_name);
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char buf[16];
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jio_snprintf(buf, sizeof(buf), ":%d]", line_no);
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out.print_raw_cr(buf);
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} else {
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// update 1-element cache for fast silent matches
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last_file_name = file_name;
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last_line_no = line_no;
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}
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return true;
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}
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if (!is_error_reported()) {
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// print a friendly hint:
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fdStream out(defaultStream::output_fd());
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out.print_raw_cr("# To suppress the following error report, specify this argument");
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out.print_raw ("# after -XX: or in .hotspotrc: SuppressErrorAt=");
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out.print_raw (base_name);
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char buf[16];
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jio_snprintf(buf, sizeof(buf), ":%d", line_no);
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out.print_raw_cr(buf);
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}
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return false;
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}
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#undef is_token_break
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#else
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// Place-holder for non-existent suppression check:
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#define error_is_suppressed(file_name, line_no) (false)
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#endif //PRODUCT
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void report_vm_error(const char* file, int line, const char* error_msg,
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const char* detail_msg)
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{
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if (Debugging || error_is_suppressed(file, line)) return;
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Thread* const thread = ThreadLocalStorage::get_thread_slow();
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VMError err(thread, file, line, error_msg, detail_msg);
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err.report_and_die();
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}
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void report_fatal(const char* file, int line, const char* message)
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{
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report_vm_error(file, line, "fatal error", message);
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}
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// Used by report_vm_out_of_memory to detect recursion.
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static jint _exiting_out_of_mem = 0;
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void report_vm_out_of_memory(const char* file, int line, size_t size,
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const char* message) {
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if (Debugging || error_is_suppressed(file, line)) return;
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// We try to gather additional information for the first out of memory
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// error only; gathering additional data might cause an allocation and a
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// recursive out_of_memory condition.
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const jint exiting = 1;
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// If we succeed in changing the value, we're the first one in.
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bool first_time_here = Atomic::xchg(exiting, &_exiting_out_of_mem) != exiting;
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if (first_time_here) {
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Thread* thread = ThreadLocalStorage::get_thread_slow();
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VMError(thread, file, line, size, message).report_and_die();
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}
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// Dump core and abort
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vm_abort(true);
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}
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void report_should_not_call(const char* file, int line) {
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report_vm_error(file, line, "ShouldNotCall()");
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}
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void report_should_not_reach_here(const char* file, int line) {
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report_vm_error(file, line, "ShouldNotReachHere()");
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}
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void report_unimplemented(const char* file, int line) {
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report_vm_error(file, line, "Unimplemented()");
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}
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void report_untested(const char* file, int line, const char* message) {
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#ifndef PRODUCT
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warning("Untested: %s in %s: %d\n", message, file, line);
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#endif // PRODUCT
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}
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void report_java_out_of_memory(const char* message) {
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static jint out_of_memory_reported = 0;
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// A number of threads may attempt to report OutOfMemoryError at around the
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// same time. To avoid dumping the heap or executing the data collection
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// commands multiple times we just do it once when the first threads reports
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// the error.
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if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) {
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// create heap dump before OnOutOfMemoryError commands are executed
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if (HeapDumpOnOutOfMemoryError) {
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tty->print_cr("java.lang.OutOfMemoryError: %s", message);
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HeapDumper::dump_heap();
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}
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if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
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VMError err(message);
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err.report_java_out_of_memory();
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}
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}
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}
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extern "C" void ps();
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static bool error_reported = false;
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// call this when the VM is dying--it might loosen some asserts
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void set_error_reported() {
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error_reported = true;
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}
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bool is_error_reported() {
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return error_reported;
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}
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#ifndef PRODUCT
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#include <signal.h>
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void test_error_handler(size_t test_num)
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{
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if (test_num == 0) return;
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// If asserts are disabled, use the corresponding guarantee instead.
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size_t n = test_num;
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NOT_DEBUG(if (n <= 2) n += 2);
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const char* const str = "hello";
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const size_t num = (size_t)os::vm_page_size();
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const char* const eol = os::line_separator();
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const char* const msg = "this message should be truncated during formatting";
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// Keep this in sync with test/runtime/6888954/vmerrors.sh.
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switch (n) {
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case 1: assert(str == NULL, "expected null");
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case 2: assert(num == 1023 && *str == 'X',
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err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
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case 3: guarantee(str == NULL, "expected null");
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case 4: guarantee(num == 1023 && *str == 'X',
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err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
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case 5: fatal("expected null");
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case 6: fatal(err_msg("num=" SIZE_FORMAT " str=\"%s\"", num, str));
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case 7: fatal(err_msg("%s%s# %s%s# %s%s# %s%s# %s%s# "
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"%s%s# %s%s# %s%s# %s%s# %s%s# "
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"%s%s# %s%s# %s%s# %s%s# %s",
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msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
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msg, eol, msg, eol, msg, eol, msg, eol, msg, eol,
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msg, eol, msg, eol, msg, eol, msg, eol, msg));
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case 8: vm_exit_out_of_memory(num, "ChunkPool::allocate");
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case 9: ShouldNotCallThis();
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case 10: ShouldNotReachHere();
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case 11: Unimplemented();
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// This is last because it does not generate an hs_err* file on Windows.
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case 12: os::signal_raise(SIGSEGV);
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default: ShouldNotReachHere();
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}
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}
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#endif // #ifndef PRODUCT
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// ------ helper functions for debugging go here ------------
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#ifndef PRODUCT
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// All debug entries should be wrapped with a stack allocated
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// Command object. It makes sure a resource mark is set and
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// flushes the logfile to prevent file sharing problems.
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class Command : public StackObj {
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private:
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ResourceMark rm;
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ResetNoHandleMark rnhm;
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HandleMark hm;
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bool debug_save;
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public:
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static int level;
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Command(const char* str) {
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debug_save = Debugging;
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Debugging = true;
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if (level++ > 0) return;
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tty->cr();
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tty->print_cr("\"Executing %s\"", str);
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}
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~Command() { tty->flush(); Debugging = debug_save; level--; }
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};
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int Command::level = 0;
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extern "C" void blob(CodeBlob* cb) {
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Command c("blob");
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cb->print();
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}
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extern "C" void dump_vtable(address p) {
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Command c("dump_vtable");
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klassOop k = (klassOop)p;
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instanceKlass::cast(k)->vtable()->print();
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}
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extern "C" void nm(intptr_t p) {
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// Actually we look through all CodeBlobs (the nm name has been kept for backwards compatability)
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Command c("nm");
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CodeBlob* cb = CodeCache::find_blob((address)p);
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if (cb == NULL) {
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tty->print_cr("NULL");
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} else {
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cb->print();
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}
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}
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extern "C" void disnm(intptr_t p) {
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Command c("disnm");
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CodeBlob* cb = CodeCache::find_blob((address) p);
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cb->print();
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Disassembler::decode(cb);
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}
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extern "C" void printnm(intptr_t p) {
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char buffer[256];
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sprintf(buffer, "printnm: " INTPTR_FORMAT, p);
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Command c(buffer);
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CodeBlob* cb = CodeCache::find_blob((address) p);
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if (cb->is_nmethod()) {
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nmethod* nm = (nmethod*)cb;
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nm->print_nmethod(true);
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}
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}
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extern "C" void universe() {
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Command c("universe");
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Universe::print();
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}
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extern "C" void verify() {
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// try to run a verify on the entire system
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// note: this may not be safe if we're not at a safepoint; for debugging,
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// this manipulates the safepoint settings to avoid assertion failures
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Command c("universe verify");
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bool safe = SafepointSynchronize::is_at_safepoint();
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if (!safe) {
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tty->print_cr("warning: not at safepoint -- verify may fail");
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SafepointSynchronize::set_is_at_safepoint();
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}
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// Ensure Eden top is correct before verification
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Universe::heap()->prepare_for_verify();
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Universe::verify(true);
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if (!safe) SafepointSynchronize::set_is_not_at_safepoint();
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}
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extern "C" void pp(void* p) {
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Command c("pp");
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FlagSetting fl(PrintVMMessages, true);
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if (Universe::heap()->is_in(p)) {
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oop obj = oop(p);
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obj->print();
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} else {
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tty->print("%#p", p);
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}
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}
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// pv: print vm-printable object
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extern "C" void pa(intptr_t p) { ((AllocatedObj*) p)->print(); }
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extern "C" void findpc(intptr_t x);
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extern "C" void ps() { // print stack
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Command c("ps");
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// Prints the stack of the current Java thread
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JavaThread* p = JavaThread::active();
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tty->print(" for thread: ");
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p->print();
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tty->cr();
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if (p->has_last_Java_frame()) {
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// If the last_Java_fp is set we are in C land and
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// can call the standard stack_trace function.
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p->trace_stack();
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} else {
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frame f = os::current_frame();
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RegisterMap reg_map(p);
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f = f.sender(®_map);
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tty->print("(guessing starting frame id=%#p based on current fp)\n", f.id());
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p->trace_stack_from(vframe::new_vframe(&f, ®_map, p));
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pd_ps(f);
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}
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}
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extern "C" void psf() { // print stack frames
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{
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Command c("psf");
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JavaThread* p = JavaThread::active();
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tty->print(" for thread: ");
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p->print();
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tty->cr();
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if (p->has_last_Java_frame()) {
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p->trace_frames();
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}
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}
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}
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extern "C" void threads() {
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Command c("threads");
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Threads::print(false, true);
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}
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extern "C" void psd() {
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Command c("psd");
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SystemDictionary::print();
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}
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extern "C" void safepoints() {
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Command c("safepoints");
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SafepointSynchronize::print_state();
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}
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extern "C" void pss() { // print all stacks
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Command c("pss");
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Threads::print(true, true);
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}
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extern "C" void debug() { // to set things up for compiler debugging
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Command c("debug");
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WizardMode = true;
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PrintVMMessages = PrintCompilation = true;
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PrintInlining = PrintAssembly = true;
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tty->flush();
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}
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extern "C" void ndebug() { // undo debug()
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Command c("ndebug");
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PrintCompilation = false;
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PrintInlining = PrintAssembly = false;
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tty->flush();
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}
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extern "C" void flush() {
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Command c("flush");
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tty->flush();
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}
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extern "C" void events() {
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Command c("events");
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Events::print_last(tty, 50);
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}
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extern "C" void nevents(int n) {
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Command c("events");
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Events::print_last(tty, n);
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}
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// Given a heap address that was valid before the most recent GC, if
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// the oop that used to contain it is still live, prints the new
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|
// location of the oop and the address. Useful for tracking down
|
|
// certain kinds of naked oop and oop map bugs.
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|
extern "C" void pnl(intptr_t old_heap_addr) {
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// Print New Location of old heap address
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Command c("pnl");
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|
#ifndef VALIDATE_MARK_SWEEP
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tty->print_cr("Requires build with VALIDATE_MARK_SWEEP defined (debug build) and RecordMarkSweepCompaction enabled");
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#else
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MarkSweep::print_new_location_of_heap_address((HeapWord*) old_heap_addr);
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#endif
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}
|
|
|
|
|
|
extern "C" methodOop findm(intptr_t pc) {
|
|
Command c("findm");
|
|
nmethod* nm = CodeCache::find_nmethod((address)pc);
|
|
return (nm == NULL) ? (methodOop)NULL : nm->method();
|
|
}
|
|
|
|
|
|
extern "C" nmethod* findnm(intptr_t addr) {
|
|
Command c("findnm");
|
|
return CodeCache::find_nmethod((address)addr);
|
|
}
|
|
|
|
static address same_page(address x, address y) {
|
|
intptr_t page_bits = -os::vm_page_size();
|
|
if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) {
|
|
return x;
|
|
} else if (x > y) {
|
|
return (address)(intptr_t(y) | ~page_bits) + 1;
|
|
} else {
|
|
return (address)(intptr_t(y) & page_bits);
|
|
}
|
|
}
|
|
|
|
|
|
static void find(intptr_t x, bool print_pc) {
|
|
address addr = (address)x;
|
|
|
|
CodeBlob* b = CodeCache::find_blob_unsafe(addr);
|
|
if (b != NULL) {
|
|
if (b->is_buffer_blob()) {
|
|
// the interpreter is generated into a buffer blob
|
|
InterpreterCodelet* i = Interpreter::codelet_containing(addr);
|
|
if (i != NULL) {
|
|
i->print();
|
|
return;
|
|
}
|
|
if (Interpreter::contains(addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is pointing into interpreter code (not bytecode specific)", addr);
|
|
return;
|
|
}
|
|
//
|
|
if (AdapterHandlerLibrary::contains(b)) {
|
|
AdapterHandlerLibrary::print_handler(b);
|
|
}
|
|
// the stubroutines are generated into a buffer blob
|
|
StubCodeDesc* d = StubCodeDesc::desc_for(addr);
|
|
if (d != NULL) {
|
|
d->print();
|
|
if (print_pc) tty->cr();
|
|
return;
|
|
}
|
|
if (StubRoutines::contains(addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", addr);
|
|
return;
|
|
}
|
|
// the InlineCacheBuffer is using stubs generated into a buffer blob
|
|
if (InlineCacheBuffer::contains(addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is pointing into InlineCacheBuffer", addr);
|
|
return;
|
|
}
|
|
VtableStub* v = VtableStubs::stub_containing(addr);
|
|
if (v != NULL) {
|
|
v->print();
|
|
return;
|
|
}
|
|
}
|
|
if (print_pc && b->is_nmethod()) {
|
|
ResourceMark rm;
|
|
tty->print("%#p: Compiled ", addr);
|
|
((nmethod*)b)->method()->print_value_on(tty);
|
|
tty->print(" = (CodeBlob*)" INTPTR_FORMAT, b);
|
|
tty->cr();
|
|
return;
|
|
}
|
|
if ( b->is_nmethod()) {
|
|
if (b->is_zombie()) {
|
|
tty->print_cr(INTPTR_FORMAT " is zombie nmethod", b);
|
|
} else if (b->is_not_entrant()) {
|
|
tty->print_cr(INTPTR_FORMAT " is non-entrant nmethod", b);
|
|
}
|
|
}
|
|
b->print();
|
|
return;
|
|
}
|
|
|
|
if (Universe::heap()->is_in(addr)) {
|
|
HeapWord* p = Universe::heap()->block_start(addr);
|
|
bool print = false;
|
|
// If we couldn't find it it just may mean that heap wasn't parseable
|
|
// See if we were just given an oop directly
|
|
if (p != NULL && Universe::heap()->block_is_obj(p)) {
|
|
print = true;
|
|
} else if (p == NULL && ((oopDesc*)addr)->is_oop()) {
|
|
p = (HeapWord*) addr;
|
|
print = true;
|
|
}
|
|
if (print) {
|
|
oop(p)->print();
|
|
if (p != (HeapWord*)x && oop(p)->is_constMethod() &&
|
|
constMethodOop(p)->contains(addr)) {
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
methodHandle mh (thread, constMethodOop(p)->method());
|
|
if (!mh->is_native()) {
|
|
tty->print_cr("bci_from(%p) = %d; print_codes():",
|
|
addr, mh->bci_from(address(x)));
|
|
mh->print_codes();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
} else if (Universe::heap()->is_in_reserved(addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is an unallocated location in the heap", addr);
|
|
return;
|
|
}
|
|
|
|
if (JNIHandles::is_global_handle((jobject) addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is a global jni handle", addr);
|
|
return;
|
|
}
|
|
if (JNIHandles::is_weak_global_handle((jobject) addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is a weak global jni handle", addr);
|
|
return;
|
|
}
|
|
if (JNIHandleBlock::any_contains((jobject) addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is a local jni handle", addr);
|
|
return;
|
|
}
|
|
|
|
for(JavaThread *thread = Threads::first(); thread; thread = thread->next()) {
|
|
// Check for privilege stack
|
|
if (thread->privileged_stack_top() != NULL && thread->privileged_stack_top()->contains(addr)) {
|
|
tty->print_cr(INTPTR_FORMAT " is pointing into the privilege stack for thread: " INTPTR_FORMAT, addr, thread);
|
|
return;
|
|
}
|
|
// If the addr is a java thread print information about that.
|
|
if (addr == (address)thread) {
|
|
thread->print();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Try an OS specific find
|
|
if (os::find(addr)) {
|
|
return;
|
|
}
|
|
|
|
if (print_pc) {
|
|
tty->print_cr(INTPTR_FORMAT ": probably in C++ code; check debugger", addr);
|
|
Disassembler::decode(same_page(addr-40,addr),same_page(addr+40,addr));
|
|
return;
|
|
}
|
|
|
|
tty->print_cr(INTPTR_FORMAT " is pointing to unknown location", addr);
|
|
}
|
|
|
|
|
|
class LookForRefInGenClosure : public OopsInGenClosure {
|
|
public:
|
|
oop target;
|
|
void do_oop(oop* o) {
|
|
if (o != NULL && *o == target) {
|
|
tty->print_cr(INTPTR_FORMAT, o);
|
|
}
|
|
}
|
|
void do_oop(narrowOop* o) { ShouldNotReachHere(); }
|
|
};
|
|
|
|
|
|
class LookForRefInObjectClosure : public ObjectClosure {
|
|
private:
|
|
LookForRefInGenClosure look_in_object;
|
|
public:
|
|
LookForRefInObjectClosure(oop target) { look_in_object.target = target; }
|
|
void do_object(oop obj) {
|
|
obj->oop_iterate(&look_in_object);
|
|
}
|
|
};
|
|
|
|
|
|
static void findref(intptr_t x) {
|
|
CollectedHeap *ch = Universe::heap();
|
|
LookForRefInGenClosure lookFor;
|
|
lookFor.target = (oop) x;
|
|
LookForRefInObjectClosure look_in_object((oop) x);
|
|
|
|
tty->print_cr("Searching heap:");
|
|
ch->object_iterate(&look_in_object);
|
|
|
|
tty->print_cr("Searching strong roots:");
|
|
Universe::oops_do(&lookFor, false);
|
|
JNIHandles::oops_do(&lookFor); // Global (strong) JNI handles
|
|
Threads::oops_do(&lookFor, NULL);
|
|
ObjectSynchronizer::oops_do(&lookFor);
|
|
//FlatProfiler::oops_do(&lookFor);
|
|
SystemDictionary::oops_do(&lookFor);
|
|
|
|
tty->print_cr("Searching code cache:");
|
|
CodeCache::oops_do(&lookFor);
|
|
|
|
tty->print_cr("Done.");
|
|
}
|
|
|
|
class FindClassObjectClosure: public ObjectClosure {
|
|
private:
|
|
const char* _target;
|
|
public:
|
|
FindClassObjectClosure(const char name[]) { _target = name; }
|
|
|
|
virtual void do_object(oop obj) {
|
|
if (obj->is_klass()) {
|
|
Klass* k = klassOop(obj)->klass_part();
|
|
if (k->name() != NULL) {
|
|
ResourceMark rm;
|
|
const char* ext = k->external_name();
|
|
if ( strcmp(_target, ext) == 0 ) {
|
|
tty->print_cr("Found " INTPTR_FORMAT, obj);
|
|
obj->print();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
//
|
|
extern "C" void findclass(const char name[]) {
|
|
Command c("findclass");
|
|
if (name != NULL) {
|
|
tty->print_cr("Finding class %s -> ", name);
|
|
FindClassObjectClosure srch(name);
|
|
Universe::heap()->permanent_object_iterate(&srch);
|
|
}
|
|
}
|
|
|
|
// Another interface that isn't ambiguous in dbx.
|
|
// Can we someday rename the other find to hsfind?
|
|
extern "C" void hsfind(intptr_t x) {
|
|
Command c("hsfind");
|
|
find(x, false);
|
|
}
|
|
|
|
|
|
extern "C" void hsfindref(intptr_t x) {
|
|
Command c("hsfindref");
|
|
findref(x);
|
|
}
|
|
|
|
extern "C" void find(intptr_t x) {
|
|
Command c("find");
|
|
find(x, false);
|
|
}
|
|
|
|
|
|
extern "C" void findpc(intptr_t x) {
|
|
Command c("findpc");
|
|
find(x, true);
|
|
}
|
|
|
|
|
|
// int versions of all methods to avoid having to type type casts in the debugger
|
|
|
|
void pp(intptr_t p) { pp((void*)p); }
|
|
void pp(oop p) { pp((void*)p); }
|
|
|
|
void help() {
|
|
Command c("help");
|
|
tty->print_cr("basic");
|
|
tty->print_cr(" pp(void* p) - try to make sense of p");
|
|
tty->print_cr(" pv(intptr_t p)- ((PrintableResourceObj*) p)->print()");
|
|
tty->print_cr(" ps() - print current thread stack");
|
|
tty->print_cr(" pss() - print all thread stacks");
|
|
tty->print_cr(" pm(int pc) - print methodOop given compiled PC");
|
|
tty->print_cr(" findm(intptr_t pc) - finds methodOop");
|
|
tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it");
|
|
|
|
tty->print_cr("misc.");
|
|
tty->print_cr(" flush() - flushes the log file");
|
|
tty->print_cr(" events() - dump last 50 events");
|
|
|
|
|
|
tty->print_cr("compiler debugging");
|
|
tty->print_cr(" debug() - to set things up for compiler debugging");
|
|
tty->print_cr(" ndebug() - undo debug");
|
|
}
|
|
|
|
#if 0
|
|
|
|
// BobV's command parser for debugging on windows when nothing else works.
|
|
|
|
enum CommandID {
|
|
CMDID_HELP,
|
|
CMDID_QUIT,
|
|
CMDID_HSFIND,
|
|
CMDID_PSS,
|
|
CMDID_PS,
|
|
CMDID_PSF,
|
|
CMDID_FINDM,
|
|
CMDID_FINDNM,
|
|
CMDID_PP,
|
|
CMDID_BPT,
|
|
CMDID_EXIT,
|
|
CMDID_VERIFY,
|
|
CMDID_THREADS,
|
|
CMDID_ILLEGAL = 99
|
|
};
|
|
|
|
struct CommandParser {
|
|
char *name;
|
|
CommandID code;
|
|
char *description;
|
|
};
|
|
|
|
struct CommandParser CommandList[] = {
|
|
(char *)"help", CMDID_HELP, " Dump this list",
|
|
(char *)"quit", CMDID_QUIT, " Return from this routine",
|
|
(char *)"hsfind", CMDID_HSFIND, "Perform an hsfind on an address",
|
|
(char *)"ps", CMDID_PS, " Print Current Thread Stack Trace",
|
|
(char *)"pss", CMDID_PSS, " Print All Thread Stack Trace",
|
|
(char *)"psf", CMDID_PSF, " Print All Stack Frames",
|
|
(char *)"findm", CMDID_FINDM, " Find a methodOop from a PC",
|
|
(char *)"findnm", CMDID_FINDNM, "Find an nmethod from a PC",
|
|
(char *)"pp", CMDID_PP, " Find out something about a pointer",
|
|
(char *)"break", CMDID_BPT, " Execute a breakpoint",
|
|
(char *)"exitvm", CMDID_EXIT, "Exit the VM",
|
|
(char *)"verify", CMDID_VERIFY, "Perform a Heap Verify",
|
|
(char *)"thread", CMDID_THREADS, "Dump Info on all Threads",
|
|
(char *)0, CMDID_ILLEGAL
|
|
};
|
|
|
|
|
|
// get_debug_command()
|
|
//
|
|
// Read a command from standard input.
|
|
// This is useful when you have a debugger
|
|
// which doesn't support calling into functions.
|
|
//
|
|
void get_debug_command()
|
|
{
|
|
ssize_t count;
|
|
int i,j;
|
|
bool gotcommand;
|
|
intptr_t addr;
|
|
char buffer[256];
|
|
nmethod *nm;
|
|
methodOop m;
|
|
|
|
tty->print_cr("You have entered the diagnostic command interpreter");
|
|
tty->print("The supported commands are:\n");
|
|
for ( i=0; ; i++ ) {
|
|
if ( CommandList[i].code == CMDID_ILLEGAL )
|
|
break;
|
|
tty->print_cr(" %s \n", CommandList[i].name );
|
|
}
|
|
|
|
while ( 1 ) {
|
|
gotcommand = false;
|
|
tty->print("Please enter a command: ");
|
|
count = scanf("%s", buffer) ;
|
|
if ( count >=0 ) {
|
|
for ( i=0; ; i++ ) {
|
|
if ( CommandList[i].code == CMDID_ILLEGAL ) {
|
|
if (!gotcommand) tty->print("Invalid command, please try again\n");
|
|
break;
|
|
}
|
|
if ( strcmp(buffer, CommandList[i].name) == 0 ) {
|
|
gotcommand = true;
|
|
switch ( CommandList[i].code ) {
|
|
case CMDID_PS:
|
|
ps();
|
|
break;
|
|
case CMDID_PSS:
|
|
pss();
|
|
break;
|
|
case CMDID_PSF:
|
|
psf();
|
|
break;
|
|
case CMDID_FINDM:
|
|
tty->print("Please enter the hex addr to pass to findm: ");
|
|
scanf("%I64X", &addr);
|
|
m = (methodOop)findm(addr);
|
|
tty->print("findm(0x%I64X) returned 0x%I64X\n", addr, m);
|
|
break;
|
|
case CMDID_FINDNM:
|
|
tty->print("Please enter the hex addr to pass to findnm: ");
|
|
scanf("%I64X", &addr);
|
|
nm = (nmethod*)findnm(addr);
|
|
tty->print("findnm(0x%I64X) returned 0x%I64X\n", addr, nm);
|
|
break;
|
|
case CMDID_PP:
|
|
tty->print("Please enter the hex addr to pass to pp: ");
|
|
scanf("%I64X", &addr);
|
|
pp((void*)addr);
|
|
break;
|
|
case CMDID_EXIT:
|
|
exit(0);
|
|
case CMDID_HELP:
|
|
tty->print("Here are the supported commands: ");
|
|
for ( j=0; ; j++ ) {
|
|
if ( CommandList[j].code == CMDID_ILLEGAL )
|
|
break;
|
|
tty->print_cr(" %s -- %s\n", CommandList[j].name,
|
|
CommandList[j].description );
|
|
}
|
|
break;
|
|
case CMDID_QUIT:
|
|
return;
|
|
break;
|
|
case CMDID_BPT:
|
|
BREAKPOINT;
|
|
break;
|
|
case CMDID_VERIFY:
|
|
verify();;
|
|
break;
|
|
case CMDID_THREADS:
|
|
threads();;
|
|
break;
|
|
case CMDID_HSFIND:
|
|
tty->print("Please enter the hex addr to pass to hsfind: ");
|
|
scanf("%I64X", &addr);
|
|
tty->print("Calling hsfind(0x%I64X)\n", addr);
|
|
hsfind(addr);
|
|
break;
|
|
default:
|
|
case CMDID_ILLEGAL:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#endif // PRODUCT
|