504 lines
12 KiB
C
504 lines
12 KiB
C
/**************************************************************************
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*
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* Copyright 2008 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Cross-platform debugging helpers.
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*
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* For now it just has assert and printf replacements, but it might be extended
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* with stack trace reports and more advanced logging in the near future.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#ifndef U_DEBUG_H_
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#define U_DEBUG_H_
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#include <stdarg.h>
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#include <string.h>
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#if !defined(_WIN32)
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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#include "util/os_misc.h"
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#include "util/detect_os.h"
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#include "util/macros.h"
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#if DETECT_OS_HAIKU
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/* Haiku provides debug_printf in libroot with OS.h */
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#include <OS.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum util_debug_type
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{
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UTIL_DEBUG_TYPE_OUT_OF_MEMORY = 1,
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UTIL_DEBUG_TYPE_ERROR,
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UTIL_DEBUG_TYPE_SHADER_INFO,
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UTIL_DEBUG_TYPE_PERF_INFO,
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UTIL_DEBUG_TYPE_INFO,
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UTIL_DEBUG_TYPE_FALLBACK,
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UTIL_DEBUG_TYPE_CONFORMANCE,
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};
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/**
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* Structure that contains a callback for debug messages from the driver back
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* to the gallium frontend.
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*/
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struct util_debug_callback
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{
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/**
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* When set to \c true, the callback may be called asynchronously from a
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* driver-created thread.
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*/
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bool async;
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/**
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* Callback for the driver to report debug/performance/etc information back
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* to the gallium frontend.
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*
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* \param data user-supplied data pointer
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* \param id message type identifier, if pointed value is 0, then a
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* new id is assigned
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* \param type UTIL_DEBUG_TYPE_*
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* \param format printf-style format string
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* \param args args for format string
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*/
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void (*debug_message)(void *data,
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unsigned *id,
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enum util_debug_type type,
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const char *fmt,
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va_list args);
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void *data;
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};
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#define _util_printf_format(fmt, list) PRINTFLIKE(fmt, list)
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void _debug_vprintf(const char *format, va_list ap);
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static inline void
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_debug_printf(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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_debug_vprintf(format, ap);
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va_end(ap);
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}
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/**
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* Print debug messages.
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*
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* The actual channel used to output debug message is platform specific. To
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* avoid misformating or truncation, follow these rules of thumb:
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* - output whole lines
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* - avoid outputing large strings (512 bytes is the current maximum length
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* that is guaranteed to be printed in all platforms)
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*/
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#if !DETECT_OS_HAIKU
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static inline void
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debug_printf(const char *format, ...) _util_printf_format(1,2);
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static inline void
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debug_printf(const char *format, ...)
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{
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#ifdef DEBUG
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va_list ap;
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va_start(ap, format);
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_debug_vprintf(format, ap);
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va_end(ap);
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#else
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(void) format; /* silence warning */
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#endif
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}
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#endif
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/*
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* ... isn't portable so we need to pass arguments in parentheses.
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*
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* usage:
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* debug_printf_once(("answer: %i\n", 42));
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*/
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#define debug_printf_once(args) \
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do { \
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static bool once = true; \
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if (once) { \
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once = false; \
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debug_printf args; \
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} \
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} while (0)
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#ifdef DEBUG
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#define debug_vprintf(_format, _ap) _debug_vprintf(_format, _ap)
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#else
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#define debug_vprintf(_format, _ap) ((void)0)
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#endif
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#ifdef DEBUG
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/**
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* Dump a blob in hex to the same place that debug_printf sends its
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* messages.
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*/
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void debug_print_blob( const char *name, const void *blob, unsigned size );
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#else
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#define debug_print_blob(_name, _blob, _size) ((void)0)
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#endif
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#ifdef _WIN32
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/**
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* Disable Win32 interactive error message boxes.
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*
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* Should be called as soon as possible for effectiveness.
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*/
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void
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debug_disable_win32_error_dialogs(void);
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#endif
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/**
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* Hard-coded breakpoint.
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*/
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#ifdef DEBUG
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#define debug_break() os_break()
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#else /* !DEBUG */
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#define debug_break() ((void)0)
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#endif /* !DEBUG */
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long
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debug_get_num_option(const char *name, long dfault);
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void
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debug_get_version_option(const char *name, unsigned *major, unsigned *minor);
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/**
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* Output the current function name.
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*/
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#ifdef DEBUG
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#define debug_checkpoint() \
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_debug_printf("%s\n", __FUNCTION__)
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#else
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#define debug_checkpoint() \
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((void)0)
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#endif
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/**
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* Output the full source code position.
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*/
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#ifdef DEBUG
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#define debug_checkpoint_full() \
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_debug_printf("%s:%u:%s\n", __FILE__, __LINE__, __FUNCTION__)
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#else
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#define debug_checkpoint_full() \
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((void)0)
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#endif
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/**
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* Output a warning message. Muted on release version.
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*/
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#ifdef DEBUG
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#define debug_warning(__msg) \
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_debug_printf("%s:%u:%s: warning: %s\n", __FILE__, __LINE__, __FUNCTION__, __msg)
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#else
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#define debug_warning(__msg) \
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((void)0)
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#endif
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/**
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* Emit a warning message, but only once.
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*/
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#ifdef DEBUG
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#define debug_warn_once(__msg) \
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do { \
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static bool warned = false; \
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if (!warned) { \
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_debug_printf("%s:%u:%s: one time warning: %s\n", \
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__FILE__, __LINE__, __FUNCTION__, __msg); \
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warned = true; \
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} \
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} while (0)
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#else
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#define debug_warn_once(__msg) \
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((void)0)
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#endif
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/**
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* Output an error message. Not muted on release version.
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*/
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#ifdef DEBUG
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#define debug_error(__msg) \
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_debug_printf("%s:%u:%s: error: %s\n", __FILE__, __LINE__, __FUNCTION__, __msg)
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#else
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#define debug_error(__msg) \
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_debug_printf("error: %s\n", __msg)
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#endif
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/**
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* Output a debug log message to the debug info callback.
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*/
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#define util_debug_message(cb, type, fmt, ...) do { \
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static unsigned id = 0; \
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if ((cb) && (cb)->debug_message) { \
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_util_debug_message(cb, &id, \
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UTIL_DEBUG_TYPE_ ## type, \
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fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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void
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_util_debug_message(
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struct util_debug_callback *cb,
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unsigned *id,
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enum util_debug_type type,
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const char *fmt, ...) _util_printf_format(4, 5);
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/**
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* Used by debug_dump_enum and debug_dump_flags to describe symbols.
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*/
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struct debug_named_value
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{
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const char *name;
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uint64_t value;
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const char *desc;
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};
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/**
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* Some C pre-processor magic to simplify creating named values.
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*
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* Example:
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* @code
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* static const debug_named_value my_names[] = {
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* DEBUG_NAMED_VALUE(MY_ENUM_VALUE_X),
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* DEBUG_NAMED_VALUE(MY_ENUM_VALUE_Y),
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* DEBUG_NAMED_VALUE(MY_ENUM_VALUE_Z),
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* DEBUG_NAMED_VALUE_END
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* };
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*
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* ...
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* debug_printf("%s = %s\n",
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* name,
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* debug_dump_enum(my_names, my_value));
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* ...
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* @endcode
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*/
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#define DEBUG_NAMED_VALUE(__symbol) {#__symbol, (unsigned long)__symbol, NULL}
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#define DEBUG_NAMED_VALUE_WITH_DESCRIPTION(__symbol, __desc) {#__symbol, (unsigned long)__symbol, __desc}
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#define DEBUG_NAMED_VALUE_END {NULL, 0, NULL}
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/**
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* Convert a enum value to a string.
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*/
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const char *
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debug_dump_enum(const struct debug_named_value *names,
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unsigned long value);
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const char *
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debug_dump_enum_noprefix(const struct debug_named_value *names,
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const char *prefix,
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unsigned long value);
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/**
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* Convert binary flags value to a string.
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*/
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const char *
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debug_dump_flags(const struct debug_named_value *names,
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unsigned long value);
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/**
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* Function enter exit loggers
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*/
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#ifdef DEBUG
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int debug_funclog_enter(const char* f, const int line, const char* file);
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void debug_funclog_exit(const char* f, const int line, const char* file);
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void debug_funclog_enter_exit(const char* f, const int line, const char* file);
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#define DEBUG_FUNCLOG_ENTER() \
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int __debug_decleration_work_around = \
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debug_funclog_enter(__FUNCTION__, __LINE__, __FILE__)
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#define DEBUG_FUNCLOG_EXIT() \
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do { \
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(void)__debug_decleration_work_around; \
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debug_funclog_exit(__FUNCTION__, __LINE__, __FILE__); \
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return; \
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} while(0)
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#define DEBUG_FUNCLOG_EXIT_RET(ret) \
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do { \
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(void)__debug_decleration_work_around; \
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debug_funclog_exit(__FUNCTION__, __LINE__, __FILE__); \
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return ret; \
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} while(0)
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#define DEBUG_FUNCLOG_ENTER_EXIT() \
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debug_funclog_enter_exit(__FUNCTION__, __LINE__, __FILE__)
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#else
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#define DEBUG_FUNCLOG_ENTER() \
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int __debug_decleration_work_around
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#define DEBUG_FUNCLOG_EXIT() \
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do { (void)__debug_decleration_work_around; return; } while(0)
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#define DEBUG_FUNCLOG_EXIT_RET(ret) \
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do { (void)__debug_decleration_work_around; return ret; } while(0)
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#define DEBUG_FUNCLOG_ENTER_EXIT()
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#endif
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/**
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* Get option.
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*
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* It is an alias for getenv on Linux.
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*
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* On Windows it reads C:\gallium.cfg, which is a text file with CR+LF line
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* endings with one option per line as
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*
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* NAME=value
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*
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* This file must be terminated with an extra empty line.
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*/
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const char *
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debug_get_option(const char *name, const char *dfault);
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bool
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debug_get_bool_option(const char *name, bool dfault);
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long
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debug_get_num_option(const char *name, long dfault);
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uint64_t
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debug_get_flags_option(const char *name,
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const struct debug_named_value *flags,
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uint64_t dfault);
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#define DEBUG_GET_ONCE_OPTION(suffix, name, dfault) \
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static const char * \
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debug_get_option_ ## suffix (void) \
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{ \
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static bool initialized = false; \
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static const char * value; \
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if (!initialized) { \
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initialized = true; \
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value = debug_get_option(name, dfault); \
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} \
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return value; \
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}
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static inline bool
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__check_suid(void)
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{
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#if !defined(_WIN32)
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if (geteuid() != getuid())
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return true;
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#endif
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return false;
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}
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/**
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* Define a getter for a debug option which specifies a 'FILE *'
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* to open, with additional checks for suid executables. Note
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* that if the return is not NULL, the caller owns the 'FILE *'
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* reference.
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*/
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#define DEBUG_GET_ONCE_FILE_OPTION(suffix, name, dfault, mode) \
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static FILE * \
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debug_get_option_ ## suffix (void) \
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{ \
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static bool initialized = false; \
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static const char * value; \
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if (__check_suid()) \
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return NULL; \
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if (!initialized) { \
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initialized = true; \
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value = debug_get_option(name, dfault); \
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} \
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if (!value) \
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return NULL; \
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return fopen(value, mode); \
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}
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#define DEBUG_GET_ONCE_BOOL_OPTION(sufix, name, dfault) \
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static bool \
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debug_get_option_ ## sufix (void) \
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{ \
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static bool initialized = false; \
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static bool value; \
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if (!initialized) { \
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initialized = true; \
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value = debug_get_bool_option(name, dfault); \
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} \
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return value; \
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}
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#define DEBUG_GET_ONCE_NUM_OPTION(sufix, name, dfault) \
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static long \
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debug_get_option_ ## sufix (void) \
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{ \
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static bool initialized = false; \
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static long value; \
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if (!initialized) { \
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initialized = true; \
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value = debug_get_num_option(name, dfault); \
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} \
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return value; \
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}
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#define DEBUG_GET_ONCE_FLAGS_OPTION(sufix, name, flags, dfault) \
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static unsigned long \
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debug_get_option_ ## sufix (void) \
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{ \
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static bool initialized = false; \
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static unsigned long value; \
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if (!initialized) { \
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initialized = true; \
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value = debug_get_flags_option(name, flags, dfault); \
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} \
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return value; \
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* U_DEBUG_H_ */
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