uvg266/src/checkpoint.h

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2014-06-11 05:48:36 +00:00
#ifndef CHECKPOINT_H_
#define CHECKPOINT_H_
/*****************************************************************************
* Copyright (C) 2007-2014 Laurent Fasnacht <l@libres.ch> *
* *
* You can redistribute it and/or modify it under the terms of the GNU *
* General Public License version 2 as published by the Free Software *
* Foundation. *
****************************************************************************/
#ifdef CHECKPOINTS
#ifdef NDEBUG
#error "CHECKPOINTS require assertions to be enabled!"
#endif
#include <stdio.h>
#include <stdlib.h>
extern FILE* g_ckpt_file;
extern int g_ckpt_enabled; //Do we check?
extern int g_ckpt_record; //Do we record?
#endif
#if defined(CHECKPOINTS)
#define CHECKPOINTS_INIT() do { \
if (getenv("CHECKPOINTS")) {\
if (strcmp(getenv("CHECKPOINTS"),"record") == 0) { \
g_ckpt_file = fopen("__debug_ckpt.log", "w"); assert(g_ckpt_file); \
g_ckpt_record = 1; \
} else if (strcmp(getenv("CHECKPOINTS"),"check") == 0) { \
g_ckpt_file = fopen("__debug_ckpt.log", "r"); assert(g_ckpt_file); \
g_ckpt_record = 0; \
g_ckpt_enabled = 0; \
} else { \
g_ckpt_file = NULL; \
} \
} else {\
g_ckpt_file = NULL; \
} \
} while (0)
#define CHECKPOINTS_FINALIZE() do {fclose(g_ckpt_file); g_ckpt_file = NULL;} while (0)
#define CHECKPOINT_MARK(str, ...) do { \
if (g_ckpt_file) { \
if (g_ckpt_record) { \
fprintf(g_ckpt_file, "MARK: " str "\n", __VA_ARGS__); \
} else { \
char buffer_ckpt[4096]; \
long pos; \
snprintf(buffer_ckpt, 4095, "MARK: " str "\n", __VA_ARGS__); \
pos = ftell(g_ckpt_file); \
g_ckpt_enabled = 0; \
while (!feof(g_ckpt_file)) { \
char buffer_file[4096]; \
fgets(buffer_file, 4095, g_ckpt_file); \
if (strncmp(buffer_file, buffer_ckpt, 4096)==0) { \
g_ckpt_enabled = 1; \
break; \
} \
} \
if (!g_ckpt_enabled) fseek(g_ckpt_file, pos, SEEK_SET); \
} \
} \
} while (0)
#define CHECKPOINT(str, ...) do { \
if (g_ckpt_file) { \
if (g_ckpt_record) { \
fprintf(g_ckpt_file, str "\n", __VA_ARGS__); \
} else if (g_ckpt_enabled) { \
char buffer_file[4096], buffer_ckpt[4096]; \
fgets(buffer_file, 4095, g_ckpt_file); \
snprintf(buffer_ckpt, 4095, str "\n", __VA_ARGS__); \
if (strncmp(buffer_file, buffer_ckpt, 4096)!=0) { \
fprintf(stderr, "Checkpoint failed (at %ld):\nFile: %sExec: %s", ftell(g_ckpt_file), buffer_file, buffer_ckpt); \
assert(0); \
} \
} \
} \
} while (0)
#endif
#if !defined(CHECKPOINTS)
#define CHECKPOINTS_INIT() do {} while (0)
#define CHECKPOINTS_FINALIZE() do {} while (0)
#define CHECKPOINT_MARK(str, ...) do {} while (0)
#define CHECKPOINT(str, ...) do {} while (0)
#endif
#endif //CHECKPOINT_H_