зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
1.8 KiB
C
69 строки
1.8 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 https://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_glue_Debug_h
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#define mozilla_glue_Debug_h
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/* This header file intends to supply debugging utilities for use in code
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* that cannot use XPCOM debugging facilities like nsDebug.h.
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* e.g. mozglue, browser/app
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*
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* NB: printf_stderr() is in the global namespace, so include this file with
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* care; avoid including from header files.
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*/
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#include <io.h>
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#if defined(XP_WIN)
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# include <windows.h>
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#endif // defined(XP_WIN)
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#include "mozilla/Attributes.h"
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#include "mozilla/Sprintf.h"
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#if defined(MOZILLA_INTERNAL_API)
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# error Do not include this file from XUL sources.
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#endif
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// Though this is a separate implementation than nsDebug's, we want to make the
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// declarations compatible to avoid confusing the linker if both headers are
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// included.
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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inline void printf_stderr(const char* fmt, ...) MOZ_FORMAT_PRINTF(1, 2) {
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#if defined(XP_WIN)
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if (IsDebuggerPresent()) {
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char buf[2048];
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va_list args;
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va_start(args, fmt);
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VsprintfLiteral(buf, fmt, args);
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va_end(args);
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OutputDebugStringA(buf);
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}
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#endif // defined(XP_WIN)
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// stderr is unbuffered by default so we open a new FILE (which is buffered)
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// so that calls to printf_stderr are not as likely to get mixed together.
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int fd = _fileno(stderr);
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if (fd == -2) return;
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FILE* fp = _fdopen(_dup(fd), "a");
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if (!fp) return;
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va_list args;
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va_start(args, fmt);
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vfprintf(fp, fmt, args);
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va_end(args);
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fclose(fp);
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}
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // mozilla_glue_Debug_h
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