usefull commit message

1 files changed, 98 insertions, 0 deletions

diff --git a/src/common.h b/src/common.h
new file mode 100644
index 0000000..b91459a
--- /dev/null
+++ b/src/common.h
@@ -0,0 +1,98 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+// LOGGING
+
+#include <stdio.h>
+#include <time.h>
+
+#define _RED    "\033[0;31m"
+#define _GREEN  "\033[0;32m"
+#define _YELLOW "\033[0;33m"
+#define _RST    "\033[0m"
+
+#define _log_print(...) fprintf(stdout, __VA_ARGS__)
+#define _log(color, message) _log_print("[%s] %s%-7s"_RST" ", timenow(), color, message)
+
+#define info(...) do {                              \
+        _log(_GREEN, "[INFO]");                     \
+        _log_print(__VA_ARGS__); _log_print("\n");  \
+    } while(0)
+#define err(...)  do {                              \
+        _log(_RED,   "[ERROR]");                    \
+        _log_print(__FILE__":%d: ", __LINE__);      \
+        _log_print(__VA_ARGS__); _log_print("\n");  \
+    } while(0)
+#define die(...) do {     \
+        err(__VA_ARGS__); \
+        abort();          \
+    } while(0)
+
+static inline char *timenow(void)
+{
+    static char buffer[64];
+    time_t timer = time(NULL);
+    strftime(buffer, 64, "%H:%M:%S", localtime(&timer));
+    return buffer;
+}
+
+// ERROR MANAGEMENT
+
+#include <errno.h>
+
+#define ERR_NZ(e, r, on_fail) do {                \
+        int r;                                    \
+        if((r = e)) { on_fail; }                  \
+    } while(0)
+
+#define ERR_NZ_RET(e)                             \
+    ERR_NZ(e, r, return r)                        \
+
+#define ERR_ERRNO_SET(e, on_fail)                 \
+    ERR_NZ(e, _r, errno = -_r; on_fail)
+
+#define ERR_Z(e, on_fail) do {                    \
+        if(!(e)) { on_fail; }                     \
+    } while(0)
+
+#endif
+
+// MEMORY MANAGEMENT
+
+#ifdef ENABLE_MEMDEBUG
+#include "memdebug.h"
+#define DISABLE_DIE_ALLOC
+#endif
+
+#ifndef DISABLE_DIE_ALLOC
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+// #ifdef __GNUC__
+// #define __die_alloc(e) ({void *ptr = e; if(!v) die("%s", strerror(errno)); ptr;})
+// #define malloc(...)  __die_alloc(malloc(__VA_ARGS__))
+// #define calloc(...)  __die_alloc(calloc(__VA_ARGS__))
+// #define realloc(...) __die_alloc(realloc(__VA_ARGS__))
+// #else
+
+#define DIE_ALLOC_BUILDER(name, typed_args, args)   \
+    static inline void *__die_##name typed_args     \
+    {                                               \
+        void *r = name args;                        \
+        if(!r) die("%s", strerror(errno));          \
+        return r;                                   \
+    }
+
+DIE_ALLOC_BUILDER(malloc,  (size_t size), (size))
+DIE_ALLOC_BUILDER(calloc,  (size_t nmemb, size_t size), (nmemb, size))
+DIE_ALLOC_BUILDER(realloc, (void *ptr, size_t size), (ptr, size))
+
+#define malloc(size)        __die_malloc (       size)
+#define calloc(nmemb, size) __die_calloc (nmemb, size)
+#define realloc(ptr, size)  __die_realloc(ptr,   size)
+
+// #endif
+#endif
+