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gecko/xpcom/glue/nsDebug.h
Brian Hackett 7977c3b1cb Remove spurious \r's. Go Windows. b=541220, r=aidan
2010-04-22 11:13:05 -07:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsDebug_h___
#define nsDebug_h___
#ifndef nscore_h___
#include "nscore.h"
#endif
#ifndef nsError_h__
#include "nsError.h"
#endif
#include "nsXPCOM.h"
#ifdef DEBUG
#define NS_DEBUG
#include "prprf.h"
#endif
#ifdef DEBUG
/**
* Abort the execution of the program if the expression evaluates to
* false.
*
* There is no status value returned from the macro.
*
* Note that the non-debug version of this macro does <b>not</b>
* evaluate the expression argument. Hence side effect statements
* as arguments to the macro will yield improper execution in a
* non-debug build. For example:
*
* NS_ABORT_IF_FALSE(0 == foo++, "yikes foo should be zero");
*
* Note also that the non-debug version of this macro does <b>not</b>
* evaluate the message argument.
*/
#define NS_ABORT_IF_FALSE(_expr, _msg) \
PR_BEGIN_MACRO \
if (!(_expr)) { \
NS_DebugBreak(NS_DEBUG_ABORT, _msg, #_expr, __FILE__, __LINE__); \
} \
PR_END_MACRO
/**
* Warn if a given condition is false.
*
* Program execution continues past the usage of this macro.
*
* Note also that the non-debug version of this macro does <b>not</b>
* evaluate the message argument.
*/
#define NS_WARN_IF_FALSE(_expr,_msg) \
PR_BEGIN_MACRO \
if (!(_expr)) { \
NS_DebugBreak(NS_DEBUG_WARNING, _msg, #_expr, __FILE__, __LINE__); \
} \
PR_END_MACRO
/**
* Test a precondition for truth. If the expression is not true then
* trigger a program failure.
*/
#define NS_PRECONDITION(expr, str) \
PR_BEGIN_MACRO \
if (!(expr)) { \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, #expr, __FILE__, __LINE__); \
} \
PR_END_MACRO
/**
* Test an assertion for truth. If the expression is not true then
* trigger a program failure.
*/
#define NS_ASSERTION(expr, str) \
PR_BEGIN_MACRO \
if (!(expr)) { \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, #expr, __FILE__, __LINE__); \
} \
PR_END_MACRO
/**
* Test a post-condition for truth. If the expression is not true then
* trigger a program failure.
*/
#define NS_POSTCONDITION(expr, str) \
PR_BEGIN_MACRO \
if (!(expr)) { \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, #expr, __FILE__, __LINE__); \
} \
PR_END_MACRO
/**
* This macros triggers a program failure if executed. It indicates that
* an attempt was made to execute some unimplemented functionality.
*/
#define NS_NOTYETIMPLEMENTED(str) \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, "NotYetImplemented", __FILE__, __LINE__)
/**
* This macros triggers a program failure if executed. It indicates that
* an attempt was made to execute some unimplemented functionality.
*/
#define NS_NOTREACHED(str) \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, "Not Reached", __FILE__, __LINE__)
/**
* Log an error message.
*/
#define NS_ERROR(str) \
NS_DebugBreak(NS_DEBUG_ASSERTION, str, "Error", __FILE__, __LINE__)
/**
* Log a warning message.
*/
#define NS_WARNING(str) \
NS_DebugBreak(NS_DEBUG_WARNING, str, nsnull, __FILE__, __LINE__)
/**
* Trigger an abort
*/
#define NS_ABORT() \
NS_DebugBreak(NS_DEBUG_ABORT, nsnull, nsnull, __FILE__, __LINE__)
/**
* Cause a break
*/
#define NS_BREAK() \
NS_DebugBreak(NS_DEBUG_BREAK, nsnull, nsnull, __FILE__, __LINE__)
#else /* NS_DEBUG */
/**
* The non-debug version of these macros do not evaluate the
* expression or the message arguments to the macro.
*/
#define NS_ABORT_IF_FALSE(_expr, _msg) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_WARN_IF_FALSE(_expr, _msg) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_PRECONDITION(expr, str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_ASSERTION(expr, str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_POSTCONDITION(expr, str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_NOTYETIMPLEMENTED(str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_NOTREACHED(str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_ERROR(str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_WARNING(str) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_ABORT() PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define NS_BREAK() PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#endif /* ! NS_DEBUG */
/******************************************************************************
** Macros for static assertions. These are used by the sixgill tool.
** When the tool is not running these macros are no-ops.
******************************************************************************/
#ifdef XGILL_PLUGIN
#define STATIC_PRECONDITION(COND) __attribute__((precondition(#COND)))
#define STATIC_PRECONDITION_ASSUME(COND) __attribute__((precondition_assume(#COND)))
#define STATIC_POSTCONDITION(COND) __attribute__((postcondition(#COND)))
#define STATIC_POSTCONDITION_ASSUME(COND) __attribute__((postcondition_assume(#COND)))
#define STATIC_INVARIANT(COND) __attribute__((invariant(#COND)))
#define STATIC_INVARIANT_ASSUME(COND) __attribute__((invariant_assume(#COND)))
/* Used to make identifiers for assert/assume annotations in a function. */
#define STATIC_PASTE2(X,Y) X ## Y
#define STATIC_PASTE1(X,Y) STATIC_PASTE2(X,Y)
#define STATIC_ASSERT(COND) \
PR_BEGIN_MACRO \
__attribute__((assert(#COND), unused)) \
int STATIC_PASTE1(static_assert_, __COUNTER__); \
PR_END_MACRO
#define STATIC_ASSUME(COND) \
PR_BEGIN_MACRO \
__attribute__((assume(#COND), unused)) \
int STATIC_PASTE1(static_assume_, __COUNTER__); \
PR_END_MACRO
#define STATIC_ASSERT_RUNTIME(COND) \
PR_BEGIN_MACRO \
__attribute__((assert_runtime(#COND), unused)) \
int STATIC_PASTE1(static_assert_runtime_, __COUNTER__); \
PR_END_MACRO
/* Redefine runtime assertion macros to perform static assertions, for both
* debug and release builds. Don't include the original runtime assertions;
* this ensures the tool will consider cases where the assertion fails. */
#undef NS_PRECONDITION
#undef NS_ASSERTION
#undef NS_POSTCONDITION
#define NS_PRECONDITION(expr, str) STATIC_ASSERT_RUNTIME(expr)
#define NS_ASSERTION(expr, str) STATIC_ASSERT_RUNTIME(expr)
#define NS_POSTCONDITION(expr, str) STATIC_ASSERT_RUNTIME(expr)
#else /* XGILL_PLUGIN */
#define STATIC_PRECONDITION(COND) /* nothing */
#define STATIC_PRECONDITION_ASSUME(COND) /* nothing */
#define STATIC_POSTCONDITION(COND) /* nothing */
#define STATIC_POSTCONDITION_ASSUME(COND) /* nothing */
#define STATIC_INVARIANT(COND) /* nothing */
#define STATIC_INVARIANT_ASSUME(COND) /* nothing */
#define STATIC_ASSERT(COND) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define STATIC_ASSUME(COND) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#define STATIC_ASSERT_RUNTIME(COND) PR_BEGIN_MACRO /* nothing */ PR_END_MACRO
#endif /* XGILL_PLUGIN */
/******************************************************************************
** Macros for terminating execution when an unrecoverable condition is
** reached. These need to be compiled regardless of the NS_DEBUG flag.
******************************************************************************/
/**
* Terminate execution <i>immediately</i>, and if possible on the current
* platform, in such a way that execution can't be continued by other
* code (e.g., by intercepting a signal).
*/
#define NS_RUNTIMEABORT(msg) \
NS_DebugBreak(NS_DEBUG_ABORT, msg, nsnull, __FILE__, __LINE__)
/* Macros for checking the trueness of an expression passed in within an
* interface implementation. These need to be compiled regardless of the */
/* NS_DEBUG flag
******************************************************************************/
#define NS_ENSURE_TRUE(x, ret) \
PR_BEGIN_MACRO \
if (NS_UNLIKELY(!(x))) { \
NS_WARNING("NS_ENSURE_TRUE(" #x ") failed"); \
return ret; \
} \
PR_END_MACRO
#define NS_ENSURE_FALSE(x, ret) \
NS_ENSURE_TRUE(!(x), ret)
/******************************************************************************
** Macros for checking results
******************************************************************************/
#if defined(DEBUG) && !defined(XPCOM_GLUE_AVOID_NSPR)
#define NS_ENSURE_SUCCESS_BODY(res, ret) \
char *msg = PR_smprintf("NS_ENSURE_SUCCESS(%s, %s) failed with " \
"result 0x%X", #res, #ret, __rv); \
NS_WARNING(msg); \
PR_smprintf_free(msg);
#else
#define NS_ENSURE_SUCCESS_BODY(res, ret) \
NS_WARNING("NS_ENSURE_SUCCESS(" #res ", " #ret ") failed");
#endif
#define NS_ENSURE_SUCCESS(res, ret) \
PR_BEGIN_MACRO \
nsresult __rv = res; /* Don't evaluate |res| more than once */ \
if (NS_FAILED(__rv)) { \
NS_ENSURE_SUCCESS_BODY(res, ret) \
return ret; \
} \
PR_END_MACRO
/******************************************************************************
** Macros for checking state and arguments upon entering interface boundaries
******************************************************************************/
#define NS_ENSURE_ARG(arg) \
NS_ENSURE_TRUE(arg, NS_ERROR_INVALID_ARG)
#define NS_ENSURE_ARG_POINTER(arg) \
NS_ENSURE_TRUE(arg, NS_ERROR_INVALID_POINTER)
#define NS_ENSURE_ARG_MIN(arg, min) \
NS_ENSURE_TRUE((arg) >= min, NS_ERROR_INVALID_ARG)
#define NS_ENSURE_ARG_MAX(arg, max) \
NS_ENSURE_TRUE((arg) <= max, NS_ERROR_INVALID_ARG)
#define NS_ENSURE_ARG_RANGE(arg, min, max) \
NS_ENSURE_TRUE(((arg) >= min) && ((arg) <= max), NS_ERROR_INVALID_ARG)
#define NS_ENSURE_STATE(state) \
NS_ENSURE_TRUE(state, NS_ERROR_UNEXPECTED)
#define NS_ENSURE_NO_AGGREGATION(outer) \
NS_ENSURE_FALSE(outer, NS_ERROR_NO_AGGREGATION)
#define NS_ENSURE_PROPER_AGGREGATION(outer, iid) \
NS_ENSURE_FALSE(outer && !iid.Equals(NS_GET_IID(nsISupports)), NS_ERROR_INVALID_ARG)
/*****************************************************************************/
#ifdef XPCOM_GLUE
#define NS_CheckThreadSafe
#else
#define NS_CheckThreadSafe(owningThread, msg) \
NS_ASSERTION(owningThread == PR_GetCurrentThread(), msg)
#endif
/* When compiling the XPCOM Glue on Windows, we pretend that it's going to
* be linked with a static CRT (-MT) even when it's not. This means that we
* cannot link to data exports from the CRT, only function exports. So,
* instead of referencing "stderr" directly, use fdopen.
*/
PR_BEGIN_EXTERN_C
NS_COM_GLUE void
printf_stderr(const char *fmt, ...);
PR_END_EXTERN_C
#endif /* nsDebug_h___ */
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