/usr/include/grpc/support/log.h is in libgrpc-dev 0.11.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright 2015, Google Inc.
* 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 Google Inc. 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 GRPC_SUPPORT_LOG_H
#define GRPC_SUPPORT_LOG_H
#include <stdlib.h> /* for abort() */
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
/* GPR log API.
Usage (within grpc):
int argument1 = 3;
char* argument2 = "hello";
gpr_log(GPR_DEBUG, "format string %d", argument1);
gpr_log(GPR_INFO, "hello world");
gpr_log(GPR_ERROR, "%d %s!!", argument1, argument2); */
/* The severity of a log message - use the #defines below when calling into
gpr_log to additionally supply file and line data */
typedef enum gpr_log_severity {
GPR_LOG_SEVERITY_DEBUG,
GPR_LOG_SEVERITY_INFO,
GPR_LOG_SEVERITY_ERROR
} gpr_log_severity;
/* Returns a string representation of the log severity */
const char *gpr_log_severity_string(gpr_log_severity severity);
/* Macros to build log contexts at various severity levels */
#define GPR_DEBUG __FILE__, __LINE__, GPR_LOG_SEVERITY_DEBUG
#define GPR_INFO __FILE__, __LINE__, GPR_LOG_SEVERITY_INFO
#define GPR_ERROR __FILE__, __LINE__, GPR_LOG_SEVERITY_ERROR
/* Log a message. It's advised to use GPR_xxx above to generate the context
* for each message */
void gpr_log(const char *file, int line, gpr_log_severity severity,
const char *format, ...);
void gpr_log_message(const char *file, int line, gpr_log_severity severity,
const char *message);
/* Log overrides: applications can use this API to intercept logging calls
and use their own implementations */
typedef struct {
const char *file;
int line;
gpr_log_severity severity;
const char *message;
} gpr_log_func_args;
typedef void (*gpr_log_func)(gpr_log_func_args *args);
void gpr_set_log_function(gpr_log_func func);
/* abort() the process if x is zero, having written a line to the log.
Intended for internal invariants. If the error can be recovered from,
without the possibility of corruption, or might best be reflected via
an exception in a higher-level language, consider returning error code. */
#define GPR_ASSERT(x) \
do { \
if (!(x)) { \
gpr_log(GPR_ERROR, "assertion failed: %s", #x); \
abort(); \
} \
} while (0)
#ifdef __cplusplus
}
#endif
#endif /* GRPC_SUPPORT_LOG_H */
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