debug.{c,h}: logging functions

2021-11-02 22:59:54 +01:00
parent 06548a6464
commit 45c01f59f7
2 changed files with 150 additions and 0 deletions
--- a/src/debug.c
+++ b/src/debug.c
@@ -0,0 +1,96 @@
+/* debug.c - debug/log management
+ *
+ * Copyright (C) 2021 Bruno Raoult ("br")
+ * Licensed under the GNU General Public License v3.0 or later.
+ * Some rights reserved. See COPYING.
+ *
+ * You should have received a copy of the GNU General Public License along with this
+ * program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.htmlL>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
+ *
+ */
+
+//#ifdef DEBUG
+#include <stdio.h>
+#include <stdarg.h>
+#include <time.h>
+#include "debug.h"
+
+#define NANOSEC  1000000000                       /* nano sec in sec */
+#define MILLISEC 1000000                          /* milli sec in sec */
+
+static int64_t timer_start;                       /* in nanosecond */
+
+int clock_gettime(clockid_t clockid, struct timespec *tp);
+
+void debug_init()
+{
+    struct timespec timer;
+    if (!clock_gettime(CLOCK_MONOTONIC, &timer)) {
+        timer_start = timer.tv_sec * NANOSEC + timer.tv_nsec;
+    }
+    else {
+        timer_start = 0;
+    }
+    log("timer started.\n");
+}
+
+inline static int64_t timer_elapsed()
+{
+    struct timespec timer;
+
+    clock_gettime(CLOCK_MONOTONIC, &timer);
+    return (timer.tv_sec * NANOSEC + timer.tv_nsec) - timer_start;
+}
+
+
+/* void debug - log function
+ * @timestamp : boolean
+ * @indent    : indent level (2 spaces each)
+ * @src       : source filename (or NULL)
+ * @line      : line number
+ */
+void debug(bool timestamp, uint32_t indent, const char *src,
+           uint32_t line, const char *fmt, ...)
+{
+    va_list ap;
+
+    if (indent)
+        printf("%*s", 2*indent, "");
+
+    if (timestamp) {
+        int64_t diff = timer_elapsed();
+        printf("%ld.%03ld ", diff/NANOSEC, (diff/1000000)%1000);
+        printf("%010ld ", diff);
+    }
+
+    if (src) {
+        if (line)
+            printf("[%s:%u] ", src, line);
+        else {
+            printf("[%s] ", src);
+        }
+    }
+    va_start(ap, fmt);
+    vprintf(fmt, ap);
+    va_end(ap);
+}
+
+#ifdef DEBUGBIN
+#include <unistd.h>
+
+int main()
+{
+    int foo=1;
+    debug_init();
+
+    log("log=%d\n", foo++);
+    log_i(1, "log_i=%d\n", foo++);
+    log_i(2, "log_i=%d\n", foo++);
+    log_it(3, "log_it=%d\n", foo++);
+    log_f("log_f=%d\n", foo++);
+}
+#endif
+
+//#endif /* DEBUG_H */