| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * 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. |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <sys/cdefs.h> |
| #include <stdarg.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| // This file is an alternative to <android/log.h>, but reuses |
| // `android_LogPriority` and should not have conflicting identifiers. |
| #include <android/log.h> |
| |
| // These functions do not allocate memory to send data to the log. |
| |
| __BEGIN_DECLS |
| |
| // Formats a message to the log (priority 'fatal'), then aborts. |
| // Implemented as a macro so that async_safe_fatal isn't on the stack when we crash: |
| // we appear to go straight from the caller to abort, saving an uninteresting stack |
| // frame. |
| #define async_safe_fatal(...) \ |
| do { \ |
| async_safe_fatal_no_abort(__VA_ARGS__); \ |
| abort(); \ |
| } while (0) \ |
| |
| |
| // These functions do return, so callers that want to abort, must do so themselves, |
| // or use the macro above. |
| void async_safe_fatal_no_abort(const char* fmt, ...) __printflike(1, 2); |
| void async_safe_fatal_va_list(const char* prefix, const char* fmt, va_list args); |
| |
| // |
| // Formatting routines for the C library's internal debugging. |
| // Unlike the usual alternatives, these don't allocate, and they don't drag in all of stdio. |
| // These are async signal safe, so they can be called from signal handlers. |
| // |
| |
| int async_safe_format_buffer(char* buf, size_t size, const char* fmt, ...) __printflike(3, 4); |
| int async_safe_format_buffer_va_list(char* buffer, size_t buffer_size, const char* format, va_list args); |
| |
| int async_safe_format_fd(int fd, const char* format , ...) __printflike(2, 3); |
| int async_safe_format_fd_va_list(int fd, const char* format, va_list args); |
| int async_safe_format_log(int priority, const char* tag, const char* fmt, ...) __printflike(3, 4); |
| int async_safe_format_log_va_list(int priority, const char* tag, const char* fmt, va_list ap); |
| int async_safe_write_log(int priority, const char* tag, const char* msg); |
| |
| __END_DECLS |