Mercurial > hg > graal-compiler
view src/share/vm/utilities/xmlstream.cpp @ 5984:fd09f2d8283e
7157141: crash in 64 bit with corrupted oops
Reviewed-by: kvn, iveresov
author | never |
---|---|
date | Mon, 02 Apr 2012 16:05:56 -0700 |
parents | 1ac084126285 |
children | d2a62e0f25eb |
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/* * Copyright (c) 2002, 2011, 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. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "code/nmethod.hpp" #include "memory/allocation.hpp" #include "memory/allocation.inline.hpp" #include "oops/methodDataOop.hpp" #include "oops/methodOop.hpp" #include "oops/oop.inline.hpp" #include "runtime/deoptimization.hpp" #include "runtime/vmThread.hpp" #include "utilities/xmlstream.hpp" void xmlStream::initialize(outputStream* out) { _out = out; _last_flush = 0; _markup_state = BODY; _text_init._outer_xmlStream = this; _text = &_text_init; #ifdef ASSERT _element_depth = 0; int init_len = 100; char* init_buf = NEW_C_HEAP_ARRAY(char, init_len); _element_close_stack_low = init_buf; _element_close_stack_high = init_buf + init_len; _element_close_stack_ptr = init_buf + init_len - 1; _element_close_stack_ptr[0] = '\0'; #endif // Make sure each log uses the same base for time stamps. if (is_open()) { _out->time_stamp().update_to(1); } } #ifdef ASSERT xmlStream::~xmlStream() { FREE_C_HEAP_ARRAY(char, _element_close_stack_low); } #endif // Pass the given chars directly to _out. void xmlStream::write(const char* s, size_t len) { if (!is_open()) return; out()->write(s, len); update_position(s, len); } // Pass the given chars directly to _out, except that // we watch for special "<&>" chars. // This is suitable for either attribute text or for body text. // We don't fool with "<![CDATA[" quotes, just single-character entities. // This makes it easier for dumb tools to parse the output. void xmlStream::write_text(const char* s, size_t len) { if (!is_open()) return; size_t written = 0; // All normally printed material goes inside XML quotes. // This leaves the output free to include markup also. // Scan the string looking for inadvertant "<&>" chars for (size_t i = 0; i < len; i++) { char ch = s[i]; // Escape special chars. const char* esc = NULL; switch (ch) { // These are important only in attrs, but we do them always: case '\'': esc = "'"; break; case '"': esc = """; break; case '<': esc = "<"; break; case '&': esc = "&"; break; // This is a freebie. case '>': esc = ">"; break; } if (esc != NULL) { if (written < i) { out()->write(&s[written], i - written); written = i; } out()->print_raw(esc); written++; } } // Print the clean remainder. Usually, it is all of s. if (written < len) { out()->write(&s[written], len - written); } } // ------------------------------------------------------------------ // Outputs XML text, with special characters quoted. void xmlStream::text(const char* format, ...) { va_list ap; va_start(ap, format); va_text(format, ap); va_end(ap); } #define BUFLEN 2*K /* max size of output of individual print methods */ // ------------------------------------------------------------------ void xmlStream::va_tag(bool push, const char* format, va_list ap) { assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs"); char buffer[BUFLEN]; size_t len; const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len); see_tag(kind, push); print_raw("<"); write(kind, len); _markup_state = (push ? HEAD : ELEM); } #ifdef ASSERT /// Debugging goo to make sure element tags nest properly. // ------------------------------------------------------------------ void xmlStream::see_tag(const char* tag, bool push) { assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs"); if (!push) return; // tag goes up until either null or space: const char* tag_end = strchr(tag, ' '); size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag; assert(tag_len > 0, "tag must not be empty"); // push the tag onto the stack, pulling down the pointer char* old_ptr = _element_close_stack_ptr; char* old_low = _element_close_stack_low; char* push_ptr = old_ptr - (tag_len+1); if (push_ptr < old_low) { int old_len = _element_close_stack_high - old_ptr; int new_len = old_len * 2; if (new_len < 100) new_len = 100; char* new_low = NEW_C_HEAP_ARRAY(char, new_len); char* new_high = new_low + new_len; char* new_ptr = new_high - old_len; memcpy(new_ptr, old_ptr, old_len); _element_close_stack_high = new_high; _element_close_stack_low = new_low; _element_close_stack_ptr = new_ptr; FREE_C_HEAP_ARRAY(char, old_low); push_ptr = new_ptr - (tag_len+1); } assert(push_ptr >= _element_close_stack_low, "in range"); memcpy(push_ptr, tag, tag_len); push_ptr[tag_len] = 0; _element_close_stack_ptr = push_ptr; _element_depth += 1; } // ------------------------------------------------------------------ void xmlStream::pop_tag(const char* tag) { assert_if_no_error(!inside_attrs(), "cannot close element inside attrs"); assert(_element_depth > 0, "must be in an element to close"); assert(*tag != 0, "tag must not be empty"); char* cur_tag = _element_close_stack_ptr; bool bad_tag = false; while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) { this->print_cr("</%s> <!-- missing closing tag -->", cur_tag); _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1); _element_depth -= 1; bad_tag = true; } if (*cur_tag == 0) { bad_tag = true; } else { // Pop the stack, by skipping over the tag and its null. _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1; _element_depth -= 1; } if (bad_tag && !VMThread::should_terminate() && !VM_Exit::vm_exited() && !is_error_reported()) { assert(false, "bad tag in log"); } } #endif // ------------------------------------------------------------------ // First word in formatted string is element kind, and any subsequent // words must be XML attributes. Outputs "<kind .../>". void xmlStream::elem(const char* format, ...) { va_list ap; va_start(ap, format); va_elem(format, ap); va_end(ap); } // ------------------------------------------------------------------ void xmlStream::va_elem(const char* format, va_list ap) { va_begin_elem(format, ap); end_elem(); } // ------------------------------------------------------------------ // First word in formatted string is element kind, and any subsequent // words must be XML attributes. Outputs "<kind ...", not including "/>". void xmlStream::begin_elem(const char* format, ...) { va_list ap; va_start(ap, format); va_tag(false, format, ap); va_end(ap); } // ------------------------------------------------------------------ void xmlStream::va_begin_elem(const char* format, va_list ap) { va_tag(false, format, ap); } // ------------------------------------------------------------------ // Outputs "/>". void xmlStream::end_elem() { assert(_markup_state == ELEM, "misplaced end_elem"); print_raw("/>\n"); _markup_state = BODY; } // ------------------------------------------------------------------ // Outputs formatted text, followed by "/>". void xmlStream::end_elem(const char* format, ...) { va_list ap; va_start(ap, format); out()->vprint(format, ap); va_end(ap); end_elem(); } // ------------------------------------------------------------------ // First word in formatted string is element kind, and any subsequent // words must be XML attributes. Outputs "<kind ...>". void xmlStream::head(const char* format, ...) { va_list ap; va_start(ap, format); va_head(format, ap); va_end(ap); } // ------------------------------------------------------------------ void xmlStream::va_head(const char* format, va_list ap) { va_begin_head(format, ap); end_head(); } // ------------------------------------------------------------------ // First word in formatted string is element kind, and any subsequent // words must be XML attributes. Outputs "<kind ...", not including ">". void xmlStream::begin_head(const char* format, ...) { va_list ap; va_start(ap, format); va_tag(true, format, ap); va_end(ap); } // ------------------------------------------------------------------ void xmlStream::va_begin_head(const char* format, va_list ap) { va_tag(true, format, ap); } // ------------------------------------------------------------------ // Outputs ">". void xmlStream::end_head() { assert(_markup_state == HEAD, "misplaced end_head"); print_raw(">\n"); _markup_state = BODY; } // ------------------------------------------------------------------ // Outputs formatted text, followed by ">". void xmlStream::end_head(const char* format, ...) { va_list ap; va_start(ap, format); out()->vprint(format, ap); va_end(ap); end_head(); } // ------------------------------------------------------------------ // Outputs "</kind>". void xmlStream::tail(const char* kind) { pop_tag(kind); print_raw("</"); print_raw(kind); print_raw(">\n"); } // ------------------------------------------------------------------ // Outputs "<kind_done ... stamp='D.DD'/> </kind>". void xmlStream::done(const char* format, ...) { va_list ap; va_start(ap, format); va_done(format, ap); va_end(ap); } // ------------------------------------------------------------------ // Outputs "<kind_done stamp='D.DD'/> </kind>". // Because done_raw() doesn't need to format strings, it's simpler than // done(), and can be called safely by fatal error handler. void xmlStream::done_raw(const char* kind) { print_raw("<"); print_raw(kind); print_raw("_done stamp='"); out()->stamp(); print_raw_cr("'/>"); print_raw("</"); print_raw(kind); print_raw_cr(">"); } // ------------------------------------------------------------------ void xmlStream::va_done(const char* format, va_list ap) { char buffer[200]; guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer"); const char* kind = format; const char* kind_end = strchr(kind, ' '); size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind); strncpy(buffer, kind, kind_len); strcpy(buffer + kind_len, "_done"); strcat(buffer, format + kind_len); // Output the trailing event with the timestamp. va_begin_elem(buffer, ap); stamp(); end_elem(); // Output the tail-tag of the enclosing element. buffer[kind_len] = 0; tail(buffer); } // Output a timestamp attribute. void xmlStream::stamp() { assert_if_no_error(inside_attrs(), "stamp must be an attribute"); print_raw(" stamp='"); out()->stamp(); print_raw("'"); } // ------------------------------------------------------------------ // Output a method attribute, in the form " method='pkg/cls name sig'". // This is used only when there is no ciMethod available. void xmlStream::method(methodHandle method) { assert_if_no_error(inside_attrs(), "printing attributes"); if (method.is_null()) return; print_raw(" method='"); method_text(method); print("' bytes='%d'", method->code_size()); print(" count='%d'", method->invocation_count()); int bec = method->backedge_count(); if (bec != 0) print(" backedge_count='%d'", bec); print(" iicount='%d'", method->interpreter_invocation_count()); int throwouts = method->interpreter_throwout_count(); if (throwouts != 0) print(" throwouts='%d'", throwouts); methodDataOop mdo = method->method_data(); if (mdo != NULL) { uint cnt; cnt = mdo->decompile_count(); if (cnt != 0) print(" decompiles='%d'", cnt); for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) { cnt = mdo->trap_count(reason); if (cnt != 0) print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt); } cnt = mdo->overflow_trap_count(); if (cnt != 0) print(" overflow_traps='%d'", cnt); cnt = mdo->overflow_recompile_count(); if (cnt != 0) print(" overflow_recompiles='%d'", cnt); } } void xmlStream::method_text(methodHandle method) { assert_if_no_error(inside_attrs(), "printing attributes"); if (method.is_null()) return; //method->print_short_name(text()); method->method_holder()->klass_part()->name()->print_symbol_on(text()); print_raw(" "); // " " is easier for tools to parse than "::" method->name()->print_symbol_on(text()); print_raw(" "); // separator method->signature()->print_symbol_on(text()); } // ------------------------------------------------------------------ // Output a klass attribute, in the form " klass='pkg/cls'". // This is used only when there is no ciKlass available. void xmlStream::klass(KlassHandle klass) { assert_if_no_error(inside_attrs(), "printing attributes"); if (klass.is_null()) return; print_raw(" klass='"); klass_text(klass); print_raw("'"); } void xmlStream::klass_text(KlassHandle klass) { assert_if_no_error(inside_attrs(), "printing attributes"); if (klass.is_null()) return; //klass->print_short_name(log->out()); klass->name()->print_symbol_on(out()); } void xmlStream::name(const Symbol* name) { assert_if_no_error(inside_attrs(), "printing attributes"); if (name == NULL) return; print_raw(" name='"); name_text(name); print_raw("'"); } void xmlStream::name_text(const Symbol* name) { assert_if_no_error(inside_attrs(), "printing attributes"); if (name == NULL) return; //name->print_short_name(text()); name->print_symbol_on(text()); } void xmlStream::object(const char* attr, Handle x) { assert_if_no_error(inside_attrs(), "printing attributes"); if (x.is_null()) return; print_raw(" "); print_raw(attr); print_raw("='"); object_text(x); print_raw("'"); } void xmlStream::object_text(Handle x) { assert_if_no_error(inside_attrs(), "printing attributes"); if (x.is_null()) return; //x->print_value_on(text()); if (x->is_method()) method_text(methodOop(x())); else if (x->is_klass()) klass_text(klassOop(x())); else x->print_value_on(text()); } void xmlStream::flush() { out()->flush(); _last_flush = count(); } void xmlTextStream::flush() { if (_outer_xmlStream == NULL) return; _outer_xmlStream->flush(); } void xmlTextStream::write(const char* str, size_t len) { if (_outer_xmlStream == NULL) return; _outer_xmlStream->write_text(str, len); update_position(str, len); }