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92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* BSD 2-Clause License
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*
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* Copyright (C) 2014-2016, Lazaros Koromilas <lostd@2f30.org>
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* Copyright (C) 2014-2016, Dimitris Papastamos <sin@2f30.org>
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* Copyright (C) 2016-2021, Arun Prakash Jana <engineerarun@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#ifdef DBGMODE
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static int DEBUG_FD;
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static int xprintf(int fd, const char *fmt, ...)
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{
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char buf[BUFSIZ];
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int r;
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va_list ap;
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va_start(ap, fmt);
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r = vsnprintf(buf, sizeof(buf), fmt, ap);
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if (r > 0 && (unsigned int)r < sizeof(buf))
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r = write(fd, buf, r);
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va_end(ap);
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return r;
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}
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static int enabledbg(void)
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{
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FILE *fp = fopen("/tmp/nnndbg", "w");
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if (!fp) {
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perror("dbg(1)");
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fp = fopen("./nnndbg", "w");
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if (!fp) {
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perror("dbg(2)");
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return -1;
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}
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}
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DEBUG_FD = dup(fileno(fp));
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fclose(fp);
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if (DEBUG_FD == -1) {
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perror("dbg(3)");
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return -1;
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}
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return 0;
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}
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static void disabledbg(void)
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{
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close(DEBUG_FD);
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}
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#define STRINGIFY(x) #x
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#define TOSTRING(x) STRINGIFY(x)
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#define DPRINTF_D(x) xprintf(DEBUG_FD, "ln " TOSTRING(__line__) ": " #x "=%d\n", x)
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#define DPRINTF_U(x) xprintf(DEBUG_FD, "ln " TOSTRING(__line__) ": " #x "=%u\n", x)
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#define DPRINTF_S(x) xprintf(DEBUG_FD, "ln " TOSTRING(__line__) ": " #x "=%s\n", x)
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#define DPRINTF_P(x) xprintf(DEBUG_FD, "ln " TOSTRING(__line__) ": " #x "=%p\n", x)
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#else
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#define DPRINTF_D(x)
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#define DPRINTF_U(x)
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#define DPRINTF_S(x)
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#define DPRINTF_P(x)
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#endif /* DBGMODE */
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