mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
611 lines
15 KiB
C++
611 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Chromium headers must come before Mozilla headers.
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#include "base/process_util.h"
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#include "mozilla/Atomics.h"
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#include "nsDebugImpl.h"
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#include "nsDebug.h"
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#ifdef MOZ_CRASHREPORTER
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# include "nsExceptionHandler.h"
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#endif
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#include "nsString.h"
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#include "nsXULAppAPI.h"
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#include "prprf.h"
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#include "nsError.h"
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#include "prerror.h"
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#include "prerr.h"
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#include "prenv.h"
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#ifdef ANDROID
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#include <android/log.h>
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#endif
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#ifdef _WIN32
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/* for getenv() */
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#include <stdlib.h>
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#endif
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#include "nsTraceRefcnt.h"
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#if defined(XP_UNIX)
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#include <signal.h>
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#endif
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#if defined(XP_WIN)
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#include <tchar.h>
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#include "nsString.h"
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#endif
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#if defined(XP_MACOSX) || defined(__DragonFly__) || defined(__FreeBSD__) \
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|| defined(__NetBSD__) || defined(__OpenBSD__)
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#include <stdbool.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#endif
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#if defined(__OpenBSD__)
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#include <sys/proc.h>
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#endif
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#if defined(__DragonFly__) || defined(__FreeBSD__)
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#include <sys/user.h>
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#endif
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#if defined(__NetBSD__)
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#undef KERN_PROC
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#define KERN_PROC KERN_PROC2
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#define KINFO_PROC struct kinfo_proc2
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#else
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#define KINFO_PROC struct kinfo_proc
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#endif
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#if defined(XP_MACOSX)
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#define KP_FLAGS kp_proc.p_flag
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#elif defined(__DragonFly__)
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#define KP_FLAGS kp_flags
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#elif defined(__FreeBSD__)
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#define KP_FLAGS ki_flag
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#elif defined(__OpenBSD__) && !defined(_P_TRACED)
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#define KP_FLAGS p_psflags
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#define P_TRACED PS_TRACED
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#else
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#define KP_FLAGS p_flag
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#endif
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#include "mozilla/mozalloc_abort.h"
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static void
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Abort(const char* aMsg);
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static void
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RealBreak();
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static void
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Break(const char* aMsg);
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#if defined(_WIN32)
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#include <windows.h>
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#include <signal.h>
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#include <malloc.h> // for _alloca
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#elif defined(XP_UNIX)
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#include <stdlib.h>
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#endif
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using namespace mozilla;
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static const char* sMultiprocessDescription = nullptr;
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static Atomic<int32_t> gAssertionCount;
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NS_IMPL_QUERY_INTERFACE(nsDebugImpl, nsIDebug2)
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NS_IMETHODIMP_(MozExternalRefCountType)
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nsDebugImpl::AddRef()
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{
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return 2;
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}
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NS_IMETHODIMP_(MozExternalRefCountType)
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nsDebugImpl::Release()
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{
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return 1;
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}
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NS_IMETHODIMP
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nsDebugImpl::Assertion(const char* aStr, const char* aExpr,
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const char* aFile, int32_t aLine)
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{
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NS_DebugBreak(NS_DEBUG_ASSERTION, aStr, aExpr, aFile, aLine);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::Warning(const char* aStr, const char* aFile, int32_t aLine)
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{
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NS_DebugBreak(NS_DEBUG_WARNING, aStr, nullptr, aFile, aLine);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::Break(const char* aFile, int32_t aLine)
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{
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NS_DebugBreak(NS_DEBUG_BREAK, nullptr, nullptr, aFile, aLine);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::Abort(const char* aFile, int32_t aLine)
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{
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NS_DebugBreak(NS_DEBUG_ABORT, nullptr, nullptr, aFile, aLine);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::GetIsDebugBuild(bool* aResult)
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{
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#ifdef DEBUG
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*aResult = true;
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#else
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*aResult = false;
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::GetAssertionCount(int32_t* aResult)
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{
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*aResult = gAssertionCount;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDebugImpl::GetIsDebuggerAttached(bool* aResult)
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{
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*aResult = false;
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#if defined(XP_WIN)
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*aResult = ::IsDebuggerPresent();
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#elif defined(XP_MACOSX) || defined(__DragonFly__) || defined(__FreeBSD__) \
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|| defined(__NetBSD__) || defined(__OpenBSD__)
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// Specify the info we're looking for
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int mib[] = {
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CTL_KERN,
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KERN_PROC,
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KERN_PROC_PID,
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getpid(),
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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sizeof(KINFO_PROC),
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1,
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#endif
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};
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u_int mibSize = sizeof(mib) / sizeof(int);
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KINFO_PROC info;
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size_t infoSize = sizeof(info);
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memset(&info, 0, infoSize);
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if (sysctl(mib, mibSize, &info, &infoSize, nullptr, 0)) {
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// if the call fails, default to false
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*aResult = false;
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return NS_OK;
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}
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if (info.KP_FLAGS & P_TRACED) {
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*aResult = true;
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}
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#endif
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return NS_OK;
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}
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/* static */ void
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nsDebugImpl::SetMultiprocessMode(const char* aDesc)
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{
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sMultiprocessDescription = aDesc;
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}
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/**
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* Implementation of the nsDebug methods. Note that this code is
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* always compiled in, in case some other module that uses it is
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* compiled with debugging even if this library is not.
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*/
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enum nsAssertBehavior
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{
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NS_ASSERT_UNINITIALIZED,
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NS_ASSERT_WARN,
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NS_ASSERT_SUSPEND,
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NS_ASSERT_STACK,
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NS_ASSERT_TRAP,
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NS_ASSERT_ABORT,
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NS_ASSERT_STACK_AND_ABORT
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};
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static nsAssertBehavior
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GetAssertBehavior()
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{
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static nsAssertBehavior gAssertBehavior = NS_ASSERT_UNINITIALIZED;
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if (gAssertBehavior != NS_ASSERT_UNINITIALIZED) {
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return gAssertBehavior;
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}
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gAssertBehavior = NS_ASSERT_WARN;
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const char* assertString = PR_GetEnv("XPCOM_DEBUG_BREAK");
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if (!assertString || !*assertString) {
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return gAssertBehavior;
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}
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if (!strcmp(assertString, "warn")) {
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return gAssertBehavior = NS_ASSERT_WARN;
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}
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if (!strcmp(assertString, "suspend")) {
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return gAssertBehavior = NS_ASSERT_SUSPEND;
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}
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if (!strcmp(assertString, "stack")) {
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return gAssertBehavior = NS_ASSERT_STACK;
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}
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if (!strcmp(assertString, "abort")) {
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return gAssertBehavior = NS_ASSERT_ABORT;
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}
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if (!strcmp(assertString, "trap") || !strcmp(assertString, "break")) {
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return gAssertBehavior = NS_ASSERT_TRAP;
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}
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if (!strcmp(assertString, "stack-and-abort")) {
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return gAssertBehavior = NS_ASSERT_STACK_AND_ABORT;
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}
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fprintf(stderr, "Unrecognized value of XPCOM_DEBUG_BREAK\n");
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return gAssertBehavior;
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}
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struct FixedBuffer
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{
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FixedBuffer() : curlen(0)
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{
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buffer[0] = '\0';
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}
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char buffer[1000];
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uint32_t curlen;
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};
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static int
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StuffFixedBuffer(void* aClosure, const char* aBuf, uint32_t aLen)
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{
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if (!aLen) {
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return 0;
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}
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FixedBuffer* fb = (FixedBuffer*)aClosure;
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// strip the trailing null, we add it again later
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if (aBuf[aLen - 1] == '\0') {
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--aLen;
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}
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if (fb->curlen + aLen >= sizeof(fb->buffer)) {
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aLen = sizeof(fb->buffer) - fb->curlen - 1;
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}
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if (aLen) {
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memcpy(fb->buffer + fb->curlen, aBuf, aLen);
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fb->curlen += aLen;
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fb->buffer[fb->curlen] = '\0';
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}
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return aLen;
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}
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EXPORT_XPCOM_API(void)
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NS_DebugBreak(uint32_t aSeverity, const char* aStr, const char* aExpr,
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const char* aFile, int32_t aLine)
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{
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FixedBuffer buf;
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const char* sevString = "WARNING";
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switch (aSeverity) {
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case NS_DEBUG_ASSERTION:
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sevString = "###!!! ASSERTION";
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break;
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case NS_DEBUG_BREAK:
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sevString = "###!!! BREAK";
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break;
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case NS_DEBUG_ABORT:
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sevString = "###!!! ABORT";
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break;
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default:
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aSeverity = NS_DEBUG_WARNING;
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};
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# define PrintToBuffer(...) PR_sxprintf(StuffFixedBuffer, &buf, __VA_ARGS__)
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// Print "[PID]" or "[Desc PID]" at the beginning of the message.
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PrintToBuffer("[");
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if (sMultiprocessDescription) {
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PrintToBuffer("%s ", sMultiprocessDescription);
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}
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#if !defined(MOZILLA_XPCOMRT_API)
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PrintToBuffer("%d] ", base::GetCurrentProcId());
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#endif // !defined(MOZILLA_XPCOMRT_API)
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PrintToBuffer("%s: ", sevString);
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if (aStr) {
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PrintToBuffer("%s: ", aStr);
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}
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if (aExpr) {
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PrintToBuffer("'%s', ", aExpr);
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}
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if (aFile) {
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PrintToBuffer("file %s, ", aFile);
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}
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if (aLine != -1) {
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PrintToBuffer("line %d", aLine);
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}
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# undef PrintToBuffer
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// errors on platforms without a debugdlg ring a bell on stderr
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#if !defined(XP_WIN)
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if (aSeverity != NS_DEBUG_WARNING) {
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fprintf(stderr, "\07");
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}
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#endif
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#ifdef ANDROID
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__android_log_print(ANDROID_LOG_INFO, "Gecko", "%s", buf.buffer);
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#endif
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// Write the message to stderr unless it's a warning and MOZ_IGNORE_WARNINGS
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// is set.
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if (!(PR_GetEnv("MOZ_IGNORE_WARNINGS") && aSeverity == NS_DEBUG_WARNING)) {
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fprintf(stderr, "%s\n", buf.buffer);
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fflush(stderr);
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}
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switch (aSeverity) {
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case NS_DEBUG_WARNING:
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return;
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case NS_DEBUG_BREAK:
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Break(buf.buffer);
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return;
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case NS_DEBUG_ABORT: {
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#if defined(MOZ_CRASHREPORTER) && !defined(MOZILLA_XPCOMRT_API)
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// Updating crash annotations in the child causes us to do IPC. This can
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// really cause trouble if we're asserting from within IPC code. So we
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// have to do without the annotations in that case.
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if (XRE_IsParentProcess()) {
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nsCString note("xpcom_runtime_abort(");
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note += buf.buffer;
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note += ")";
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CrashReporter::AppendAppNotesToCrashReport(note);
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CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("AbortMessage"),
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nsDependentCString(buf.buffer));
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}
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#endif // MOZ_CRASHREPORTER
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#if defined(DEBUG) && defined(_WIN32)
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RealBreak();
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#endif
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#if defined(DEBUG) && !defined(MOZILLA_XPCOMRT_API)
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nsTraceRefcnt::WalkTheStack(stderr);
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#endif
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Abort(buf.buffer);
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return;
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}
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}
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// Now we deal with assertions
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gAssertionCount++;
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switch (GetAssertBehavior()) {
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case NS_ASSERT_WARN:
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return;
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case NS_ASSERT_SUSPEND:
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#ifdef XP_UNIX
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fprintf(stderr, "Suspending process; attach with the debugger.\n");
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kill(0, SIGSTOP);
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#else
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Break(buf.buffer);
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#endif
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return;
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case NS_ASSERT_STACK:
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#if !defined(MOZILLA_XPCOMRT_API)
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nsTraceRefcnt::WalkTheStack(stderr);
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#endif // !defined(MOZILLA_XPCOMRT_API)
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return;
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case NS_ASSERT_STACK_AND_ABORT:
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#if !defined(MOZILLA_XPCOMRT_API)
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nsTraceRefcnt::WalkTheStack(stderr);
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#endif // !defined(MOZILLA_XPCOMRT_API)
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// Fall through to abort
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MOZ_FALLTHROUGH;
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case NS_ASSERT_ABORT:
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Abort(buf.buffer);
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return;
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case NS_ASSERT_TRAP:
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case NS_ASSERT_UNINITIALIZED: // Default to "trap" behavior
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Break(buf.buffer);
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return;
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}
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}
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static void
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Abort(const char* aMsg)
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{
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mozalloc_abort(aMsg);
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}
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static void
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RealBreak()
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{
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#if defined(_WIN32)
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::DebugBreak();
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#elif defined(XP_MACOSX)
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raise(SIGTRAP);
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#elif defined(__GNUC__) && (defined(__i386__) || defined(__i386) || defined(__x86_64__))
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asm("int $3");
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#elif defined(__arm__)
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asm(
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#ifdef __ARM_ARCH_4T__
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/* ARMv4T doesn't support the BKPT instruction, so if the compiler target
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* is ARMv4T, we want to ensure the assembler will understand that ARMv5T
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* instruction, while keeping the resulting object tagged as ARMv4T.
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*/
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".arch armv5t\n"
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".object_arch armv4t\n"
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#endif
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"BKPT #0");
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#elif defined(SOLARIS)
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#if defined(__i386__) || defined(__i386) || defined(__x86_64__)
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asm("int $3");
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#else
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raise(SIGTRAP);
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#endif
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#else
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#warning do not know how to break on this platform
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#endif
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}
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// Abort() calls this function, don't call it!
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static void
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Break(const char* aMsg)
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{
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#if defined(_WIN32)
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static int ignoreDebugger;
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if (!ignoreDebugger) {
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const char* shouldIgnoreDebugger = getenv("XPCOM_DEBUG_DLG");
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ignoreDebugger =
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1 + (shouldIgnoreDebugger && !strcmp(shouldIgnoreDebugger, "1"));
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}
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if ((ignoreDebugger == 2) || !::IsDebuggerPresent()) {
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DWORD code = IDRETRY;
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/* Create the debug dialog out of process to avoid the crashes caused by
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* Windows events leaking into our event loop from an in process dialog.
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* We do this by launching windbgdlg.exe (built in xpcom/windbgdlg).
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* See http://bugzilla.mozilla.org/show_bug.cgi?id=54792
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*/
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PROCESS_INFORMATION pi;
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STARTUPINFOW si;
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wchar_t executable[MAX_PATH];
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wchar_t* pName;
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memset(&pi, 0, sizeof(pi));
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memset(&si, 0, sizeof(si));
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si.cb = sizeof(si);
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si.wShowWindow = SW_SHOW;
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// 2nd arg of CreateProcess is in/out
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wchar_t* msgCopy = (wchar_t*)_alloca((strlen(aMsg) + 1) * sizeof(wchar_t));
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wcscpy(msgCopy, NS_ConvertUTF8toUTF16(aMsg).get());
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if (GetModuleFileNameW(GetModuleHandleW(L"xpcom.dll"), executable, MAX_PATH) &&
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(pName = wcsrchr(executable, '\\')) != nullptr &&
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wcscpy(pName + 1, L"windbgdlg.exe") &&
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CreateProcessW(executable, msgCopy, nullptr, nullptr,
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false, DETACHED_PROCESS | NORMAL_PRIORITY_CLASS,
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nullptr, nullptr, &si, &pi)) {
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WaitForSingleObject(pi.hProcess, INFINITE);
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GetExitCodeProcess(pi.hProcess, &code);
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CloseHandle(pi.hProcess);
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CloseHandle(pi.hThread);
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}
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switch (code) {
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case IDABORT:
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//This should exit us
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raise(SIGABRT);
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//If we are ignored exit this way..
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_exit(3);
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case IDIGNORE:
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return;
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}
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}
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RealBreak();
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#elif defined(XP_MACOSX)
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/* Note that we put this Mac OS X test above the GNUC/x86 test because the
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* GNUC/x86 test is also true on Intel Mac OS X and we want the PPC/x86
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* impls to be the same.
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*/
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RealBreak();
|
|
#elif defined(__GNUC__) && (defined(__i386__) || defined(__i386) || defined(__x86_64__))
|
|
RealBreak();
|
|
#elif defined(__arm__)
|
|
RealBreak();
|
|
#elif defined(SOLARIS)
|
|
RealBreak();
|
|
#else
|
|
#warning do not know how to break on this platform
|
|
#endif
|
|
}
|
|
|
|
nsresult
|
|
nsDebugImpl::Create(nsISupports* aOuter, const nsIID& aIID, void** aInstancePtr)
|
|
{
|
|
static const nsDebugImpl* sImpl;
|
|
|
|
if (NS_WARN_IF(aOuter)) {
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
}
|
|
|
|
if (!sImpl) {
|
|
sImpl = new nsDebugImpl();
|
|
}
|
|
|
|
return const_cast<nsDebugImpl*>(sImpl)->QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
nsresult
|
|
NS_ErrorAccordingToNSPR()
|
|
{
|
|
PRErrorCode err = PR_GetError();
|
|
switch (err) {
|
|
case PR_OUT_OF_MEMORY_ERROR: return NS_ERROR_OUT_OF_MEMORY;
|
|
case PR_WOULD_BLOCK_ERROR: return NS_BASE_STREAM_WOULD_BLOCK;
|
|
case PR_FILE_NOT_FOUND_ERROR: return NS_ERROR_FILE_NOT_FOUND;
|
|
case PR_READ_ONLY_FILESYSTEM_ERROR: return NS_ERROR_FILE_READ_ONLY;
|
|
case PR_NOT_DIRECTORY_ERROR: return NS_ERROR_FILE_NOT_DIRECTORY;
|
|
case PR_IS_DIRECTORY_ERROR: return NS_ERROR_FILE_IS_DIRECTORY;
|
|
case PR_LOOP_ERROR: return NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
|
|
case PR_FILE_EXISTS_ERROR: return NS_ERROR_FILE_ALREADY_EXISTS;
|
|
case PR_FILE_IS_LOCKED_ERROR: return NS_ERROR_FILE_IS_LOCKED;
|
|
case PR_FILE_TOO_BIG_ERROR: return NS_ERROR_FILE_TOO_BIG;
|
|
case PR_NO_DEVICE_SPACE_ERROR: return NS_ERROR_FILE_NO_DEVICE_SPACE;
|
|
case PR_NAME_TOO_LONG_ERROR: return NS_ERROR_FILE_NAME_TOO_LONG;
|
|
case PR_DIRECTORY_NOT_EMPTY_ERROR: return NS_ERROR_FILE_DIR_NOT_EMPTY;
|
|
case PR_NO_ACCESS_RIGHTS_ERROR: return NS_ERROR_FILE_ACCESS_DENIED;
|
|
default: return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
void
|
|
NS_ABORT_OOM(size_t aSize)
|
|
{
|
|
#if defined(MOZ_CRASHREPORTER) && !defined(MOZILLA_XPCOMRT_API)
|
|
CrashReporter::AnnotateOOMAllocationSize(aSize);
|
|
#endif
|
|
MOZ_CRASH();
|
|
}
|