зеркало из https://github.com/mozilla/pjs.git
Bug 61241. Change trace-malloc's live object output format to mimic beard's format from Boehm. r=brendan, sr=jband
This commit is contained in:
waterson%netscape.com
Родитель
7e9fd5f5f4
Коммит
1c7febd7de
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@ -375,6 +375,7 @@ struct callsite {
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uint32 serial;
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lfd_set lfdset;
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char *name;
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const char *library;
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int offset;
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callsite *parent;
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callsite *siblings;
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@ -389,7 +390,7 @@ static uint32 callsite_serial_generator = 0;
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static uint32 tmstats_serial_generator = 0;
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/* Root of the tree of callsites, the sum of all (cycle-compressed) stacks. */
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static callsite calltree_root = {0, 0, LFD_SET_STATIC_INITIALIZER, NULL, 0, NULL, NULL, NULL};
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static callsite calltree_root = {0, 0, LFD_SET_STATIC_INITIALIZER, NULL, NULL, 0, NULL, NULL, NULL};
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/* Basic instrumentation. */
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static nsTMStats tmstats = NS_TMSTATS_STATIC_INITIALIZER;
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@ -695,7 +696,8 @@ static callsite *calltree(uint32 *bp)
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site->serial = ++callsite_serial_generator;
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LFD_ZERO(&site->lfdset);
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site->name = method;
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site->offset = offset;
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site->library = info.dli_fname;
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site->offset = (char*)pc - (char*)info.dli_fbase;
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site->parent = parent;
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site->siblings = parent->kids;
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parent->kids = site;
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@ -1273,13 +1275,19 @@ allocation_enumerator(PLHashEntry *he, PRIntn i, void *arg)
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FILE *ofp = (FILE*) arg;
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callsite *site = (callsite*) he->value;
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fprintf(ofp, "%8p %9lu ", he->key, (unsigned long) alloc->size);
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extern const char* nsGetTypeName(const void* ptr);
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unsigned *p, *end;
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fprintf(ofp, "0x%08X <%s> (%lu)\n", (unsigned) he->key, nsGetTypeName(he->key), (unsigned long) alloc->size);
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end = (unsigned*)(((char*) he->key) + alloc->size);
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for (p = (unsigned*)he->key; p < end; ++p)
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fprintf(ofp, "\t0x%08X\n", *p);
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while (site) {
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if (site->name || site->parent)
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fprintf(ofp, " %s+%d", site->name, site->offset);
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fprintf(ofp, "%s[%s +0x%X]\n", site->name, site->library, site->offset);
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site = site->parent;
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if (site)
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fputc(';', ofp);
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}
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fputc('\n', ofp);
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return HT_ENUMERATE_NEXT;
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@ -1294,7 +1302,6 @@ NS_TraceMallocDumpAllocations(const char *pathname)
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ofp = fopen(pathname, "w");
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if (!ofp)
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return -1;
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fprintf(ofp, "Address size stack\n");
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if (allocations)
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PL_HashTableEnumerateEntries(allocations, allocation_enumerator, ofp);
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rv = ferror(ofp) ? -1 : 0;
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@ -0,0 +1,230 @@
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is nsTypeInfo.cpp code, released
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* November 27, 2000.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Patrick C. Beard <beard@netscape.com>
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* Chris Waterson <waterson@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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||||
* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*/
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/*
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typeinfo.cpp
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Speculatively use RTTI on a random object. If it contains a pointer at offset 0
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that is in the current process' address space, and that so on, then attempt to
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use C++ RTTI's typeid operation to obtain the name of the type.
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by Patrick C. Beard.
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*/
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#include <typeinfo>
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#include <ctype.h>
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extern "C" const char* nsGetTypeName(void* ptr);
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class IUnknown {
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public:
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virtual long QueryInterface() = 0;
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virtual long AddRef() = 0;
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virtual long Release() = 0;
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};
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#if defined(MACOS)
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#include <Processes.h>
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class AddressSpace {
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public:
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AddressSpace();
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Boolean contains(void* ptr);
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private:
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ProcessInfoRec mInfo;
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};
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AddressSpace::AddressSpace()
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{
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ProcessSerialNumber psn = { 0, kCurrentProcess };
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mInfo.processInfoLength = sizeof(mInfo);
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::GetProcessInformation(&psn, &mInfo);
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}
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Boolean AddressSpace::contains(void* ptr)
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{
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UInt32 start = UInt32(mInfo.processLocation);
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return (UInt32(ptr) >= start && UInt32(ptr) < (start + mInfo.processSize));
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}
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const char* nsGetTypeName(void* ptr)
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{
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// construct only one of these per process.
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static AddressSpace space;
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// sanity check the vtable pointer, before trying to use RTTI on the object.
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void** vt = *(void***)ptr;
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if (vt && !(unsigned(vt) & 0x3) && space.contains(vt) && space.contains(*vt)) {
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IUnknown* u = static_cast<IUnknown*>(ptr);
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const char* type = typeid(*u).name();
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// make sure it looks like a C++ identifier.
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if (type && (isalnum(type[0]) || type[0] == '_'))
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return type;
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}
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return "void*";
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}
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#endif
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#if defined(linux)
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#include <signal.h>
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#include <setjmp.h>
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static jmp_buf context;
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static void handler(int signum)
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{
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longjmp(context, signum);
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}
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#define attempt() setjmp(context)
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class Signaller {
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public:
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Signaller(int signum);
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~Signaller();
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private:
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typedef void (*handler_t) (int signum);
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int mSignal;
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handler_t mOldHandler;
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};
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Signaller::Signaller(int signum)
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: mSignal(signum), mOldHandler(signal(signum, &handler))
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{
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}
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Signaller::~Signaller()
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{
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signal(mSignal, mOldHandler);
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}
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// The following are pointers that bamboozle are otherwise feeble
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// attempts to "safely" collect type names.
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//
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// XXX this kind of sucks because it means that anyone trying to use
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// this without NSPR will get unresolved symbols when this library
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// loads. It's also not very extensable. Oh well: FIX ME!
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extern "C" {
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// from nsprpub/pr/src/io/priometh.c (libnspr4.so)
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extern void* _pr_faulty_methods;
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// from nsprpub/pr/src/io/prlayer.c (libnspr4.so)
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extern void* pl_methods;
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};
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static int
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is_bamboozler(void* vt)
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{
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static void* bamboolzers[] = {
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_pr_faulty_methods,
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pl_methods,
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0
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};
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for (void** fn = bamboolzers; *fn; ++fn) {
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if (*fn == vt)
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return 1;
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}
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return 0;
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}
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static inline int
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sanity_check_vtable_i386(void** vt)
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{
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// Now that we're "safe" inside the signal handler, we can
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// start poking around. If we're really an object with
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// RTTI, then the second entry in the vtable should point
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// to a function.
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//
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// Let's see if the second entry:
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//
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// 1) looks like a 4-byte aligned pointer
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//
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// 2) points to something that looks like the following
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// i386 instructions:
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//
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// 55 push %ebp
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// 89e5 mov %esp,%ebp
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//
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// (which is the standard function prologue generated
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// by egcs).
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unsigned** i = reinterpret_cast<unsigned**>(vt) + 1;
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return !(unsigned(*i) & 3) && ((**i & 0xffffff) == 0xe58955);
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}
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static inline int
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sanity_check_vtable_ppc(void** vt)
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{
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// XXX write me!
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return 1;
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}
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#if defined(__i386)
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# define SANITY_CHECK_VTABLE(vt) (sanity_check_vtable_i386(vt))
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#elif defined(PPC)
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# define SANITY_CHECK_VTABLE(vt) (sanity_check_vtable_ppc(vt))
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#else
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# define SANITY_CHECK_VTABLE(vt) (1)
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#endif
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const char* nsGetTypeName(void* ptr)
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{
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// sanity check the vtable pointer, before trying to use RTTI on the object.
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void** vt = *(void***)ptr;
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if (vt && !(unsigned(vt) & 3) && !is_bamboozler(vt)) {
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Signaller s1(SIGSEGV);
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if (attempt() == 0) {
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if (SANITY_CHECK_VTABLE(vt)) {
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// Looks like a function: what the hell, let's call it.
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IUnknown* u = static_cast<IUnknown*>(ptr);
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const char* type = typeid(*u).name();
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// EGCS seems to prefix a length string.
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while (isdigit(*type)) ++type;
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return type;
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}
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}
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}
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return "void*";
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}
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#endif
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@ -73,6 +73,7 @@ EXPORTS = \
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ifdef NS_TRACE_MALLOC
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CSRCS += nsTraceMalloc.c
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CPPSRCS += nsTypeInfo.cpp
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EXPORTS += nsTraceMalloc.h
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DEFINES += -DNS_TRACE_MALLOC
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SIMPLE_PROGRAMS = bloatblame
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@ -375,6 +375,7 @@ struct callsite {
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uint32 serial;
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lfd_set lfdset;
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char *name;
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const char *library;
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int offset;
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callsite *parent;
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callsite *siblings;
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@ -389,7 +390,7 @@ static uint32 callsite_serial_generator = 0;
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static uint32 tmstats_serial_generator = 0;
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/* Root of the tree of callsites, the sum of all (cycle-compressed) stacks. */
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static callsite calltree_root = {0, 0, LFD_SET_STATIC_INITIALIZER, NULL, 0, NULL, NULL, NULL};
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static callsite calltree_root = {0, 0, LFD_SET_STATIC_INITIALIZER, NULL, NULL, 0, NULL, NULL, NULL};
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/* Basic instrumentation. */
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static nsTMStats tmstats = NS_TMSTATS_STATIC_INITIALIZER;
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@ -695,7 +696,8 @@ static callsite *calltree(uint32 *bp)
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site->serial = ++callsite_serial_generator;
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LFD_ZERO(&site->lfdset);
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site->name = method;
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site->offset = offset;
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site->library = info.dli_fname;
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site->offset = (char*)pc - (char*)info.dli_fbase;
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site->parent = parent;
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site->siblings = parent->kids;
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parent->kids = site;
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@ -1273,13 +1275,19 @@ allocation_enumerator(PLHashEntry *he, PRIntn i, void *arg)
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FILE *ofp = (FILE*) arg;
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callsite *site = (callsite*) he->value;
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fprintf(ofp, "%8p %9lu ", he->key, (unsigned long) alloc->size);
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extern const char* nsGetTypeName(const void* ptr);
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unsigned *p, *end;
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fprintf(ofp, "0x%08X <%s> (%lu)\n", (unsigned) he->key, nsGetTypeName(he->key), (unsigned long) alloc->size);
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end = (unsigned*)(((char*) he->key) + alloc->size);
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for (p = (unsigned*)he->key; p < end; ++p)
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fprintf(ofp, "\t0x%08X\n", *p);
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while (site) {
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if (site->name || site->parent)
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fprintf(ofp, " %s+%d", site->name, site->offset);
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fprintf(ofp, "%s[%s +0x%X]\n", site->name, site->library, site->offset);
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site = site->parent;
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if (site)
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fputc(';', ofp);
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}
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fputc('\n', ofp);
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return HT_ENUMERATE_NEXT;
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@ -1294,7 +1302,6 @@ NS_TraceMallocDumpAllocations(const char *pathname)
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ofp = fopen(pathname, "w");
|
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if (!ofp)
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return -1;
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fprintf(ofp, "Address size stack\n");
|
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if (allocations)
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PL_HashTableEnumerateEntries(allocations, allocation_enumerator, ofp);
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rv = ferror(ofp) ? -1 : 0;
|
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|
|
|
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|
|
@ -0,0 +1,230 @@
|
|||
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public
|
||||
* License Version 1.1 (the "License"); you may not use this file
|
||||
* except in compliance with the License. You may obtain a copy of
|
||||
* the License at http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS
|
||||
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
|
||||
* implied. See the License for the specific language governing
|
||||
* rights and limitations under the License.
|
||||
*
|
||||
* The Original Code is nsTypeInfo.cpp code, released
|
||||
* November 27, 2000.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape
|
||||
* Communications Corporation. Portions created by Netscape are
|
||||
* Copyright (C) 2000 Netscape Communications Corporation. All
|
||||
* Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Patrick C. Beard <beard@netscape.com>
|
||||
* Chris Waterson <waterson@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the
|
||||
* terms of the GNU Public License (the "GPL"), in which case the
|
||||
* provisions of the GPL are applicable instead of those above.
|
||||
* If you wish to allow use of your version of this file only
|
||||
* under the terms of the GPL and not to allow others to use your
|
||||
* version of this file under the MPL, indicate your decision by
|
||||
* deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this
|
||||
* file under either the MPL or the GPL.
|
||||
*/
|
||||
|
||||
/*
|
||||
typeinfo.cpp
|
||||
|
||||
Speculatively use RTTI on a random object. If it contains a pointer at offset 0
|
||||
that is in the current process' address space, and that so on, then attempt to
|
||||
use C++ RTTI's typeid operation to obtain the name of the type.
|
||||
|
||||
by Patrick C. Beard.
|
||||
*/
|
||||
|
||||
#include <typeinfo>
|
||||
#include <ctype.h>
|
||||
|
||||
extern "C" const char* nsGetTypeName(void* ptr);
|
||||
|
||||
class IUnknown {
|
||||
public:
|
||||
virtual long QueryInterface() = 0;
|
||||
virtual long AddRef() = 0;
|
||||
virtual long Release() = 0;
|
||||
};
|
||||
|
||||
#if defined(MACOS)
|
||||
|
||||
#include <Processes.h>
|
||||
|
||||
class AddressSpace {
|
||||
public:
|
||||
AddressSpace();
|
||||
Boolean contains(void* ptr);
|
||||
private:
|
||||
ProcessInfoRec mInfo;
|
||||
};
|
||||
|
||||
AddressSpace::AddressSpace()
|
||||
{
|
||||
ProcessSerialNumber psn = { 0, kCurrentProcess };
|
||||
mInfo.processInfoLength = sizeof(mInfo);
|
||||
::GetProcessInformation(&psn, &mInfo);
|
||||
}
|
||||
|
||||
Boolean AddressSpace::contains(void* ptr)
|
||||
{
|
||||
UInt32 start = UInt32(mInfo.processLocation);
|
||||
return (UInt32(ptr) >= start && UInt32(ptr) < (start + mInfo.processSize));
|
||||
}
|
||||
|
||||
const char* nsGetTypeName(void* ptr)
|
||||
{
|
||||
// construct only one of these per process.
|
||||
static AddressSpace space;
|
||||
|
||||
// sanity check the vtable pointer, before trying to use RTTI on the object.
|
||||
void** vt = *(void***)ptr;
|
||||
if (vt && !(unsigned(vt) & 0x3) && space.contains(vt) && space.contains(*vt)) {
|
||||
IUnknown* u = static_cast<IUnknown*>(ptr);
|
||||
const char* type = typeid(*u).name();
|
||||
// make sure it looks like a C++ identifier.
|
||||
if (type && (isalnum(type[0]) || type[0] == '_'))
|
||||
return type;
|
||||
}
|
||||
return "void*";
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(linux)
|
||||
|
||||
#include <signal.h>
|
||||
#include <setjmp.h>
|
||||
|
||||
static jmp_buf context;
|
||||
|
||||
static void handler(int signum)
|
||||
{
|
||||
longjmp(context, signum);
|
||||
}
|
||||
|
||||
#define attempt() setjmp(context)
|
||||
|
||||
class Signaller {
|
||||
public:
|
||||
Signaller(int signum);
|
||||
~Signaller();
|
||||
|
||||
private:
|
||||
typedef void (*handler_t) (int signum);
|
||||
int mSignal;
|
||||
handler_t mOldHandler;
|
||||
};
|
||||
|
||||
Signaller::Signaller(int signum)
|
||||
: mSignal(signum), mOldHandler(signal(signum, &handler))
|
||||
{
|
||||
}
|
||||
|
||||
Signaller::~Signaller()
|
||||
{
|
||||
signal(mSignal, mOldHandler);
|
||||
}
|
||||
|
||||
// The following are pointers that bamboozle are otherwise feeble
|
||||
// attempts to "safely" collect type names.
|
||||
//
|
||||
// XXX this kind of sucks because it means that anyone trying to use
|
||||
// this without NSPR will get unresolved symbols when this library
|
||||
// loads. It's also not very extensable. Oh well: FIX ME!
|
||||
extern "C" {
|
||||
// from nsprpub/pr/src/io/priometh.c (libnspr4.so)
|
||||
extern void* _pr_faulty_methods;
|
||||
|
||||
// from nsprpub/pr/src/io/prlayer.c (libnspr4.so)
|
||||
extern void* pl_methods;
|
||||
};
|
||||
|
||||
static int
|
||||
is_bamboozler(void* vt)
|
||||
{
|
||||
static void* bamboolzers[] = {
|
||||
_pr_faulty_methods,
|
||||
pl_methods,
|
||||
0
|
||||
};
|
||||
|
||||
for (void** fn = bamboolzers; *fn; ++fn) {
|
||||
if (*fn == vt)
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static inline int
|
||||
sanity_check_vtable_i386(void** vt)
|
||||
{
|
||||
// Now that we're "safe" inside the signal handler, we can
|
||||
// start poking around. If we're really an object with
|
||||
// RTTI, then the second entry in the vtable should point
|
||||
// to a function.
|
||||
//
|
||||
// Let's see if the second entry:
|
||||
//
|
||||
// 1) looks like a 4-byte aligned pointer
|
||||
//
|
||||
// 2) points to something that looks like the following
|
||||
// i386 instructions:
|
||||
//
|
||||
// 55 push %ebp
|
||||
// 89e5 mov %esp,%ebp
|
||||
//
|
||||
// (which is the standard function prologue generated
|
||||
// by egcs).
|
||||
unsigned** i = reinterpret_cast<unsigned**>(vt) + 1;
|
||||
return !(unsigned(*i) & 3) && ((**i & 0xffffff) == 0xe58955);
|
||||
}
|
||||
|
||||
static inline int
|
||||
sanity_check_vtable_ppc(void** vt)
|
||||
{
|
||||
// XXX write me!
|
||||
return 1;
|
||||
}
|
||||
|
||||
#if defined(__i386)
|
||||
# define SANITY_CHECK_VTABLE(vt) (sanity_check_vtable_i386(vt))
|
||||
#elif defined(PPC)
|
||||
# define SANITY_CHECK_VTABLE(vt) (sanity_check_vtable_ppc(vt))
|
||||
#else
|
||||
# define SANITY_CHECK_VTABLE(vt) (1)
|
||||
#endif
|
||||
|
||||
const char* nsGetTypeName(void* ptr)
|
||||
{
|
||||
// sanity check the vtable pointer, before trying to use RTTI on the object.
|
||||
void** vt = *(void***)ptr;
|
||||
if (vt && !(unsigned(vt) & 3) && !is_bamboozler(vt)) {
|
||||
Signaller s1(SIGSEGV);
|
||||
if (attempt() == 0) {
|
||||
if (SANITY_CHECK_VTABLE(vt)) {
|
||||
// Looks like a function: what the hell, let's call it.
|
||||
IUnknown* u = static_cast<IUnknown*>(ptr);
|
||||
const char* type = typeid(*u).name();
|
||||
// EGCS seems to prefix a length string.
|
||||
while (isdigit(*type)) ++type;
|
||||
return type;
|
||||
}
|
||||
}
|
||||
}
|
||||
return "void*";
|
||||
}
|
||||
|
||||
#endif
|
||||
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