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svn path=/trunk/boinc/; revision=12379
2007-04-17 02:27:09 +00:00
// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software 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 Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
Updated the postal address of the Free Software Foundation in all license headers. See http://lists.ssl.berkeley.edu/pipermail/boinc_dev/2007-October/008939.html for reference. svn path=/trunk/boinc/; revision=13804
2007-10-09 11:35:47 +00:00
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
svn path=/trunk/boinc/; revision=12379
2007-04-17 02:27:09 +00:00
/*
* QCrashReport.h
*
*/
/* This is part of a backtrace generator for boinc project applications.
*
* Adapted from Apple Developer Technical Support Sample Code QCrashReport
*
* This code handles Mac OS X 10.3.x through 10.4.9. It may require some
* adjustment for future OS versions; see the discussion of _sigtramp and
* PowerPC Signal Stack Frames in file QBacktrace.c.
*
* For useful tips on using backtrace information, see Apple Tech Note 2123:
* http://developer.apple.com/technotes/tn2004/tn2123.html#SECNOSYMBOLS
*
* To convert addresses to correct symbols, use the atos command-line tool:
* atos -o path/to/executable/with/symbols address
* Note: if address 1a23 is hex, use 0x1a23.
*
* To demangle mangled C++ symbols, use the c++filt command-line tool.
* You may need to prefix C++ symbols with an additonal underscore before
* passing them to c++filt (so they begin with two underscore characters).
*
* A very useful shell script to add symbols to a crash dump can be found at:
* http://developer.apple.com/tools/xcode/symbolizingcrashdumps.html
* Pipe the output of the shell script through c++filt to demangle C++ symbols.
*/
/*
File: QCrashReport.h
Contains: Code for generating crash reports.
Written by: DTS
Copyright: Copyright (c) 2007 Apple Inc. All Rights Reserved.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
("Apple") in consideration of your agreement to the following
terms, and your use, installation, modification or
redistribution of this Apple software constitutes acceptance of
these terms. If you do not agree with these terms, please do
not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following
terms, and subject to these terms, Apple grants you a personal,
non-exclusive license, under Apple's copyrights in this
original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or
without modifications, in source and/or binary forms; provided
that if you redistribute the Apple Software in its entirety and
without modifications, you must retain this notice and the
following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks
or logos of Apple Inc. may be used to endorse or promote
products derived from the Apple Software without specific prior
written permission from Apple. Except as expressly stated in
this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any
patent rights that may be infringed by your derivative works or
by other works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis.
APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY
OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY
OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
Change History (most recent first):
$Log: QCrashReport.h,v $
Revision 1.1 2007/03/02 12:20:01
First checked in.
*/
#ifndef _QCRASHREPORT_H
#define _QCRASHREPORT_H
/////////////////////////////////////////////////////////////////
#include <stdio.h>
// Put <mach/mach.h> inside extern "C" guards for the C++ build
// because the Mach header files don't always have them.
#if defined(__cplusplus)
extern "C" {
#endif
#include <mach/mach.h>
#if defined(__cplusplus)
}
#endif
- MacOS: Changes to allow command line builds on MacOS 10.3 - New preprocessor symbol DARWIN_10_3 is defined in config.h when configure script detects MacOS 10.3 - Added explicit include of config.h in some files in lib/mac svn path=/trunk/boinc/; revision=13771
2007-10-03 21:31:20 +00:00
#include "QMachOImage.h"
svn path=/trunk/boinc/; revision=12379
2007-04-17 02:27:09 +00:00
#include "QBacktrace.h"
/////////////////////////////////////////////////////////////////
#ifdef __cplusplus
extern "C" {
#endif
/*!
@functiongroup Crash Report Object
*/
/////////////////////////////////////////////////////////////////
#pragma mark ***** Crash Report Object
/*!
@header QCrashReport.h
@abstract High-level crash report object.
@discussion This module provides a high-level interface for creating and
recording crash report information. It encapsulates all of
the complexity of many lower-level modules, providing you with
a nice, clean interface for creating crash reports.
To create a create report object, just call QCRCreateFromTask or
QCRCreateFromSelf. Use QCRDestroy to destroy the resulting
object. Use QCRGetThreadCount and QCRGetThreadAtIndex to
iterate the threads of the crash report, and
QCRGetBacktraceAtIndex to interate the backtraces for those
threads. Call QCRGetSymbols and QCRGetImages to get at the
underlying symbols object and image objects. Finally,
QCRPrintBacktraces, QCRPrintThreadState and QCRPrintImages
provide a standard way to render crash reports to text.
This module assumes that the state of the process you're
investigating is stable. That is, when you create a crash report
object for a process, you need to guarantee that the state
of the process does not change while that object exists.
The best way to prevent this from happening is to suspend the
process while you're accessing it. You can automatically
suspend the task for the lifetime of the crash report object by
pass true to the suspend parameter of QCRCreateFromTask.
One special case of this applies to crash report objects that
target the current process (mach_task_self). In this case,
it's not feasible to suspend the task, a fact that makes for
some interesting challenges. This module copes with that
in two ways:
o When you get a backtrace for a thread, it implicitly gets
the thread's state. It then caches that state and the
associated backtrace. From that point on, you get
a consistent backtrace, although it may not be correlated
with the current state of the thread.
o An exception to this is for the current thread
(mach_thread_self). Unless you explicitly set its state
(using QCRSetThreadStateAtIndex), the act of calling
QCRGetBacktraceAtIndex causes the module to throw away
the cached backtrace for the thread and generate a new one
based on the thread's current state.
This has some interesting consequences on the life time of
certain memory blocks returned by the module. Specifically:
o thread state returned by QCRGetThreadStateAtIndex
o backtrace frames returned by QCRGetBacktraceAtIndex
In both cases, this memory persists until one of the following
happens:
- you destroy the crash report object
- you explicitly set the thread state using QCRSetThreadStateAtIndex
- it's associated with the current thread and you generate
a new backtrace for the thread by calling QCRGetBacktraceAtIndex
In addition, this module provides some helper routines for
launching a crash report tool (QCRExecuteCrashReportTool) and
for giving that tool access to the task control port for the
crashed task (QCRGetParentTask).
*/
/*!
@typedef QCrashReportRef
@abstract A reference to the crash report object.
@discussion This type is opaque; to create, destroy, or access it, you must
use the routines in this module.
*/
typedef struct QCrashReport *QCrashReportRef;
/*!
@functiongroup Create and Destroy
*/
#pragma mark ***** Create and Destroy
/*!
@function QCRCreateFromTask
@abstract Creates a crash report object for an arbitrary process.
@discussion Creates a crash report object for the specified process.
@param task Must be the name of a valid send right for the task control
port of the process to inspect; mach_task_self is just fine.
If you do pass in mach_task_self, this routine automatically
enables some nice optimisations.
@param suspend If true, the target task is suspended while the crash report
object exists.
Must not be true if task is mach_task_self.
@param crashedThread
The name of a valid send right for the thread control port of
the thread that crashed, or MACH_PORT_NULL if you don't have
this information handy. If you pass in MACH_PORT_NULL, you
can also set the crashed thread later by calling
QCRSetCrashedThreadIndex.
It is accepatble to pass mach_thread_self to this parameter,
but it may not do what you expect. See the discussion
above for details.
This value primarily affects the text rendering routines;
see the discussion in QCRSetCrashedThreadIndex for details.
@param cputype The CPU type for which you are creating a crash report.
Typically you would pass CPU_TYPE_ANY to use the CPU type of
the first dynamic linker that's discovered. See
QMOImageCreateFromTaskDyld for a detailed discussion of this
value.
@param crRefPtr On entry, crRefPtr must not be NULL and *crRefPtr must
be NULL. On success, *crRefPtr will be a reference to the
crash report object that's been created. On error, *crRefPtr
will be NULL.
@result An errno-style error code per QTMErrnoFromMachError.
*/
extern int QCRCreateFromTask(
task_t task,
bool suspend,
thread_t crashedThread,
cpu_type_t cputype,
QCrashReportRef * crRefPtr
);
/*!
@function QCRCreateFromSelf
@abstract Creates a crash report object for the current process.
@discussion This is equivalent to calling QCRCreateFromTask with
mach_task_self, false, mach_thread_self, and QMOGetLocalCPUType
for the first four parameters.
@param crRefPtr On entry, crRefPtr must not be NULL and *crRefPtr must
be NULL. On success, *crRefPtr will be a reference to the
crash report object that's been created. On error, *crRefPtr
will be NULL.
@result An errno-style error code per QTMErrnoFromMachError.
*/
extern int QCRCreateFromSelf(QCrashReportRef *crRefPtr);
/*!
@function QCRDestroy
@abstract Destroys a crash report object.
@discussion Destroys the supplied crash report object.
@param qmoImage The crash report object to destroy. If this is NULL, the routine
does nothing.
*/
extern void QCRDestroy(QCrashReportRef crRef);
/*!
@functiongroup Accessors
*/
#pragma mark ***** Accessors
/*!
@function QCRGetSymbols
@abstract Gets the symbols for this crash report.
@discussion Gets the symbols object for this crash report object.
@param crRef A valid crash report object.
@result A reference to the symbols object. This will never be
NULL (it is created when the crash report object is created,
and any failures would have caused creation to fail). It
exists until you destroy the crash report object.
*/
extern QSymbolsRef QCRGetSymbols(QCrashReportRef crRef);
/*!
@function QCRGetImages
@abstract Gets the images for this crash report.
@discussion Gets the array of image objects for this crash report object.
This routine can never fail; the image array is created when
the crash report object is created, and any failures would
have caused creation to fail.
IMPORTANT: Do not free the array that this returns, or indeed
any of the image objects contained in the array. These all
belongs to the crash report object and will be destroyed when
the crash report object is destroyed.
@param crRef A valid crash report object.
@param imageArrayPtr
A pointer to an image object array pointer. On entry,
imageArrayPtr must not be NULL and *imageArrayPtr is
ignored. On return, *imageArrayPtr will be a pointer
to *imageCountPtr QMOImageRef objects.
@param imageCountPtr
A pointer to an image object count. On entry, imageCountPtr
must not be NULL and *imageCountPtr is ignored. On return,
*imageCountPtr is the size of the image array whose pointer
is returned in *imageArrayPtr.
*/
extern void QCRGetImages(
QCrashReportRef crRef,
QMOImageRef ** imageArrayPtr,
size_t * imageCountPtr
);
/*!
@function QCRGetThreadCount
@abstract Returns the number of threads in this crash report.
@discussion Return the number of threads running in the process for which
this crash report was created.
@param crRef A valid crash report object.
@result A count of the number of threads.
*/
extern size_t QCRGetThreadCount(QCrashReportRef crRef);
/*!
@function QCRGetThreadAtIndex
@abstract Returns the specified thread for a crash report.
@discussion Returns the thread specified by threadIndex for the crash
report.
@param crRef A valid crash report object.
@param threadIndex
A zero-based index into the array of threads.
@result Returns the name of a send right for the thread control
port. This right is owned by the crash report object;
you must not release it and it goes away when you destroy
the crash report object (although you may have other
references to the right).
*/
extern thread_t QCRGetThreadAtIndex(QCrashReportRef crRef, size_t threadIndex);
/*!
@function QCRGetThreadStateAtIndex
@abstract Gets the thread state of the specified thread.
@discussion Returns the state of the specified thread in the crash
report object. The first time you call this function
(either explicitly, or implicitly by calling functions that
need the thread state), it takes a snapshot of the thread
state. By the time the function returns, this snapshot is
valid only if the thread (or the entire task) is suspend.
Also, the lifetime of this snapshot is controlled by a number
of factors; see the detailed discussion of this topic,
above.
If you have explicitly set the thread state (by calling
QCRSetThreadStateAtIndex) you will get back the values you
set most recently.
@param crRef A valid crash report object.
@param threadIndex
A zero-based index into the array of threads.
If this specifies the current thread (that is, QCRGetThreadAtIndex
for this index returns mach_thread_self), you probably won't
get useful results. See the discussion above for details.
@param cpuTypePtr
If NULL, this parameter is ignored. Otherwise,
on entry, the value of *cpuTypePtr is ignored. On success,
*cpuTypePtr will be the CPU type of the process that contains
the thread (for example, CPU_TYPE_X86). This will be the same
for all threads within the process. On error, the value in
*cpuTypePtr is undefined.
@param threadStateFlavorPtr
If NULL, this parameter is ignored. Otherwise,
on entry, the value of *threadStateFlavorPtr is ignored.
On success, *threadStateFlavorPtr will be the thread state
flavor of the thread's state (for example, x86_THREAD_STATE32).
On error, the value in *threadStateFlavorPtr is undefined.
@param threadStatePtr
If NULL, this parameter is ignored. Otherwise,
on entry, the value of *threadStatePtr is ignored.
On success, *threadStatePtr will contain a pointer to the
thread's state (for example, you could treat this as a pointer
to a x86_thread_state32_t structure). On error, the value in
*threadStatePtr is undefined.
IMPORTANT: The lifetime of this pointer is controlled by
a number of factors. See the detailed discussion of this
topic, above.
@param threadStateSizePtr
If NULL, this parameter is ignored. Otherwise,
on entry, the value of *threadStateSizePtr is ignored.
On success, *threadStateSizePtr will be the size, in bytes,
of thread's state (for example, sizeof(x86_thread_state32_t)).
On error, the value in *threadStateSizePtr is undefined.
@result An errno-style error code per QTMErrnoFromMachError.
If threadIndex is out of range, this will be EINVAL.
*/
extern int QCRGetThreadStateAtIndex(
QCrashReportRef crRef,
size_t threadIndex,
cpu_type_t * cpuTypePtr,
thread_state_flavor_t * threadStateFlavorPtr,
const void ** threadStatePtr,
size_t * threadStateSizePtr
);
/*!
@function QCRSetThreadStateAtIndex
@abstract Set the thread state for the specified thread.
@discussion Sets the thread state of the specified thread within the
the crash report. This is useful if you have a better idea
of the thread's state than the default mechanism for getting
the thread state used by QCRGetThreadStateAtIndex (which gets
it by calling the Mach routine thread_get_state). For example,
if you're running in a signal handler, you can extract the
interrupted thread's state from the signal handlers parameters.
If you set a thread's state by calling this routine, it
persists for the lifetime of the crash report object (unless
you override it by calling this routine again).
The memory buffer specified by threadState and threadStateSize
is copied by this routine; you do not need to maintain it
once the routine has returned.
@param crRef A valid crash report object.
@param threadIndex
A zero-based index into the array of threads.
It is both acceptable and useful to specify the current
thread here (that is, pass in a value for which QCRGetThreadAtIndex
would return mach_thread_self).
@param threadStateFlavor
Must be the thread state flavor of the new thread state
(for example, x86_THREAD_STATE32).
@param threadState
Must be a pointer to the new thread state (for example, a
pointer to a x86_thread_state32_t structure). NULL is not
acceptable.
@param threadStateSize
The size, in bytes, of the new thread state pointed to by
threadState (for example, sizeof(x86_thread_state32_t)). Due
to the nature of Mach thread states, this must not be zero and
must be an even multiple of sizeof(integer_t).
@result An errno-style error code per QTMErrnoFromMachError.
If threadIndex is out of range, this will be EINVAL.
*/
extern int QCRSetThreadStateAtIndex(
QCrashReportRef crRef,
size_t threadIndex,
thread_state_flavor_t threadStateFlavor,
const void * threadState,
size_t threadStateSize
);
/*!
@function QCRGetBacktraceAtIndex
@abstract Returns a backtrace for the specified thread.
@discussion Returns a backtrace for the specified thread. The first time
you call this function (except when specifying the current
thread, see below), it takes a snapshot of the thread's
backtrace. For each subsequent call, you get back the
same backtrace. This lifetime of this backtrace is
controlled by a number of factors; see the detailed
discussion of this topic, above.
This routine has a special case so that you can easily get a
meaningful backtrace for the current thread. If you specify
the current thread (that is, you pass in a value for which
QCRGetThreadAtIndex would return mach_thread_self) and you
have not explicitly set the thread state (by calling
QCRSetThreadStateByIndex), this routine will return a backtrace
for the current thread at the current time. This backtrace
will persist until you call this function again (or until any
of the other events that can clear the backtrace occurs; see
the detailed discussion above).
If you call this for anything except the current thread,
it implicitly snapshots the current thread state; this ensures
that the current thread state and the backtrace are in sync.
IMPORTANT: The lifetime of the array returned by this routine
is controlled by a number of factors. See the detailed
discussion of this topic, above.
IMPORTANT: Do not free the array that this returns, or indeed
any of the items in the array. These all belongs to the crash
report object and will be destroyed when the crash report
object is destroyed.
@param crRef A valid crash report object.
@param threadIndex
A zero-based index into the array of threads.
@param frameArrayPtr
Must not be NULL. On entry, the value of *frameArrayPtr is ignored.
On success, *frameArrayPtr will contain a pointer to an array
of *frameCountPtr QBTFrame objects. On error, the value in
*frameArrayPtr is undefined.
@param frameCountPtr
Must not be NULL. On entry, the value of *frameCountPtr is
ignored. On success, *frameCountPtr will be the number of
valid elements in the array pointed to be *frameArrayPtr.
On error, the value in *frameCountPtr is undefined.
@result An errno-style error code per QTMErrnoFromMachError.
If threadIndex is out of range, this will be EINVAL.
*/
extern int QCRGetBacktraceAtIndex(
QCrashReportRef crRef,
size_t threadIndex,
const QBTFrame ** frameArrayPtr,
size_t * frameCountPtr
);
enum {
kQCRNoThread = (size_t) -1
};
/*!
@function QCRGetCrashedThreadIndex
@abstract Returns the crashed thread.
@discussion Returns the index of the crashed thread. Unless you've
explicitly set this (using QCRSetCrashedThreadIndex), this
value is determined as follows:
1. If you specified MACH_PORT_NULL when you created the crash
report object, the result will be kQCRNoThread.
2. Otherwise, the result will be the index of the thread that
matches the thread that you specified.
@param crRef A valid crash report object.
@result The index of the crashed thread, or kQCRNoThread if none
was specified.
*/
extern size_t QCRGetCrashedThreadIndex(QCrashReportRef crRef);
/*!
@function QCRSetCrashedThreadIndex
@abstract Sets the crashed thread.
@discussion Sets the index of the crashed thread. This value can be
specified initially by passing a value to the crashedThread
parameter of QCRCreateFromTask. However, you can use this
function to override this value at any time.
The information primarily affects the text rendering routines.
The crashed thread will be highlighted by QCRPrintBacktraces.
Also, QCRPrintThreadState prints the thread state of the
crashed thread.
@param crRef A valid crash report object.
@param threadIndex
A zero-based index into the array of threads.
@result An errno-style error code per QTMErrnoFromMachError.
If threadIndex is out of range, this will be EINVAL.
*/
extern int QCRSetCrashedThreadIndex(QCrashReportRef crRef, size_t threadIndex);
/*!
@functiongroup Text Rendering
*/
#pragma mark ***** Text Rendering
/*!
@function QCRPrintBacktraces
@abstract Prints backtraces of each thread in the crash report.
@discussion This function is designed to ape the backtraces section of
a CrashReporter crash log as much as possible.
@param crRef A valid crash report object.
@param f The file to print to. If you want to print to something
other than a file, create a custom (FILE *) object using
<x-man-page://3/funopen>.
*/
extern void QCRPrintBacktraces(QCrashReportRef crRef, FILE *f);
/*!
@function QCRPrintThreadState
@abstract Prints the thread state of the crashed thread.
@discussion This function is designed to ape the thread state section of
a CrashReporter crash log as much as possible.
@param crRef A valid crash report object.
@param f The file to print to. If you want to print to something
other than a file, create a custom (FILE *) object using
<x-man-page://3/funopen>.
*/
extern void QCRPrintThreadState(QCrashReportRef crRef, FILE *f);
/*!
@function QCRPrintImages
@abstract Prints the dyld images of the crashed thread.
@discussion This function is designed to ape the "Binary Images Description"
section of a CrashReporter crash log as much as possible.
@param crRef A valid crash report object.
@param f The file to print to. If you want to print to something
other than a file, create a custom (FILE *) object using
<x-man-page://3/funopen>.
*/
extern void QCRPrintImages(QCrashReportRef crRef, FILE *f);
/*!
@functiongroup Tool Helpers
*/
/////////////////////////////////////////////////////////////////
#pragma mark ***** Tool Helpers
/*!
@function QCRExecuteCrashReportTool
@abstract Runs a crash report tool, giving it access to our task.
@discussion This function runs a crash report tool against the current
task in such a way that the crash report tool can get a
send right to the current process's task control port by
calling QCRGetParentTask.
IMPORTANT: This routine isn't thread safe. To do its work
it must switch the current task's bootstrap port, fork/exec
the tool, and then switch the port back. This can't be
done in a thread-safe way on current versions of Mac OS X.
@param toolArgs An array of arguments for the tool. The array must be
terminated by a NULL entry. The first entry must contain
the path to the tool.
@param pidPtr If NULL, the tool runs synchronously. That is, the routine
waits for the tool to exit before returning. In that case,
toolStatusPtr must not be NULL.
If non-NULL, the tools runs asynchronously and the routine
returns the process ID of the tool so that you can wait
for it to complete. On entry, *pidPtr must be -1. On
success, *pidPtr will be the process ID of the running tool
(that is, not -1). On error, *pidPtr will be -1.
@param toolStatusPtr
If the tool is run synchronously, the routine returns the
tool's exit status here. This is the value returned from
its main function (typically EXIT_SUCCESS or EXIT_FAILURE).
In the synchronous case, toolStatusPtr must not be NULL.
On entry, *toolStatusPtr is ignore. On success,
*toolStatusPtr contains the tool's exit status. On error,
the value of *toolStatusPtr is undefined.
In the asynchronous case, toolStatusPtr must be NULL.
@result An errno-style error code per QTMErrnoFromMachError.
*/
extern int QCRExecuteCrashReportTool(const char *toolArgs[], pid_t *pidPtr, int *toolStatusPtr);
/*!
@function QCRGetParentTask
@abstract Returns the task control port for the parent task.
@discussion For a crash report tool executed by QCRExecuteCrashReportTool,
this routine returns the name of a send right for the parent
process's task control port. This allows you to interrogate
the parent process using routines like QCRCreateFromTask.
@param taskPtr Must not be NULL. On entry, *taskPtr must be MACH_PORT_NULL.
On success, *taskPtr will be the name of a send right for the
parent process's task control port. On error, *taskPtr will
be MACH_PORT_NULL.
@result An errno-style error code per QTMErrnoFromMachError.
*/
extern int QCRGetParentTask(task_t *taskPtr);
/////////////////////////////////////////////////////////////////
#ifdef __cplusplus
}
#endif
#endif