acrn-hypervisor/hypervisor/include/debug/printf.h

74 lines
2.5 KiB
C

/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PRINTF_H
#define PRINTF_H
#ifdef HV_DEBUG
/** The well known printf() function.
*
* Formats a string and writes it to the console output.
*
* @param fmt A pointer to the NUL terminated format string.
*
* @return The number of characters actually written or a negative
* number if an error occurred.
*/
int printf(const char *fmt, ...);
/** The well known vprintf() function.
*
* Formats a string and writes it to the console output.
*
* @param fmt A pointer to the NUL terminated format string.
* @param args The variable long argument list as va_list.
* @return The number of characters actually written or a negative
* number if an error occurred.
*/
int vprintf(const char *fmt, va_list args);
#else /* HV_DEBUG */
static inline int printf(__unused const char *fmt, ...)
{
return 0;
}
static inline int vprintf(__unused const char *fmt, __unused va_list args)
{
return 0;
}
#endif /* HV_DEBUG */
#endif /* PRINTF_H */