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#ifndef MXSTDLIB_H
#define MXSTDLIB_H
/* Standard stuff I use often -- not Python specific
(c) Marc-Andre Lemburg; All Rights Reserved; mailto: mal@lemburg.com
See the documentation for further copyright information or contact
the author.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <math.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#else
#ifndef INT_MAX
# define INT_MAX 2147483647
#endif
#ifndef LONG_MAX
# define LONG_MAX INT_MAX
#endif
#endif
/* --- My own macros for memory allocation... --------------------------- */
#ifdef MAL_MEM_DEBUG
# define newstruct(x) \
(mxDebugPrintf("* malloc for struct "#x" (%s:%i)\n",__FILE__,__LINE__),\
(x *)malloc(sizeof(x)))
# define cnewstruct(x) \
(mxDebugPrintf("* calloc for struct "#x" (%s:%i)\n",c,__FILE__,__LINE__),\
(x *)calloc(sizeof(x),1))
# define new(x,c) \
(mxDebugPrintf("* malloc for "#c"=%i '"#x"'s (%s:%i)\n",c,__FILE__,__LINE__),\
(x *)malloc(sizeof(x)*(c)))
# define cnew(x,c) \
(mxDebugPrintf("* calloc for "#c"=%i '"#x"'s (%s:%i)\n",c,__FILE__,__LINE__),\
(x *)calloc((c),sizeof(x)))
# define resize(var,x,c) \
(mxDebugPrintf("* realloc "#x" at %X to size "#c"=%i (%s:%i)\n",x,c,__FILE__,__LINE__),\
(x *)realloc((void*)(var),sizeof(x)*(c)))
# define free(x) \
(mxDebugPrintf("* freeing "#x" at %X (%s:%i)\n",x,__FILE__,__LINE__),\
free((void*)(x)))
#else
# define newstruct(x) ((x *)malloc(sizeof(x)))
# define cnewstruct(x) ((x *)calloc(sizeof(x),1))
# define new(x,c) ((x *)malloc(sizeof(x)*(c)))
# define cnew(x,c) ((x *)calloc((c),sizeof(x)))
# define resize(var,x,c) ((x *)realloc((void*)(var),sizeof(x)*(c)))
# define free(x) free((void*)(x))
#endif
/* --- Debugging output ------------------------------------------------- */
/* Use the flag MAL_DEBUG to enable debug processing.
The flag MAL_DEBUG_WITH_PYTHON can be used to indicate that the
object file will be linked with Python, so we can use Python APIs
for the debug processing here.
*/
#ifdef MAL_DEBUG_WITH_PYTHON
# ifndef PYTHON_API_VERSION
# error "mx.h must be included when compiling with MAL_DEBUG_WITH_PYTHON"
# endif
# define MAL_DEBUG
#else
# if defined(PYTHON_API_VERSION) && defined(MAL_DEBUG)
# define MAL_DEBUG_WITH_PYTHON
# endif
#endif
/* Indicator for the availability of these interfaces: */
#define HAVE_MAL_DEBUG
/* Name of the environment variable defining the log file name
to be used: */
#ifndef MAL_DEBUG_OUTPUTFILE_ENV_VARIABLE
# define MAL_DEBUG_OUTPUTFILE_ENV_VARIABLE "mxLogFile"
#endif
/* File name to be used for debug logging (each object file using this
facility may set its own logging file) if no environment variable
is set: */
#ifndef MAL_DEBUG_OUTPUTFILE
# define MAL_DEBUG_OUTPUTFILE "stderr"
#endif
/* Log id to be used */
#ifndef MAL_DEBUG_LOGID
# define MAL_DEBUG_LOGID "New Log Session"
#endif
static
int mxDebugPrintf(const char *format, ...)
{
va_list args;
static FILE *mxDebugPrintf_file;
if (!mxDebugPrintf_file) {
time_t now;
char *filename;
now = time(NULL);
filename = getenv(MAL_DEBUG_OUTPUTFILE_ENV_VARIABLE);
if (!filename)
filename = MAL_DEBUG_OUTPUTFILE;
if (strcmp(filename,"stdout") == 0)
mxDebugPrintf_file = stdout;
else if (strcmp(filename,"stderr") == 0)
mxDebugPrintf_file = stderr;
else
mxDebugPrintf_file = fopen(filename,"ab");
if (!mxDebugPrintf_file) {
/* Hack to shut up "cc -Wall" warning that this function
is not used... */
static void *mxDebugPrintf_used;
mxDebugPrintf_used = (void *)mxDebugPrintf;
/* Default to stderr in case the log file cannot be opened */
mxDebugPrintf_file = stderr;
fprintf(mxDebugPrintf_file,
"\n*** Failed to open log file '%s'; "
"using stderr\n",filename);
}
fprintf(mxDebugPrintf_file,
"\n--- "MAL_DEBUG_LOGID" --- %s\n",
ctime(&now));
}
va_start(args,format);
vfprintf(mxDebugPrintf_file,format,args);
fflush(mxDebugPrintf_file);
va_end(args);
return 1;
}
#ifdef MAL_DEBUG
# ifdef MAL_DEBUG_WITH_PYTHON
/* Use the Python debug flag to enable debugging output (python -d) */
# define DPRINTF if (Py_DebugFlag) mxDebugPrintf
# define IF_DEBUGGING if (Py_DebugFlag)
# define DEBUGGING (Py_DebugFlag > 0)
# else
/* Always output debugging information */
# define DPRINTF mxDebugPrintf
# define IF_DEBUGGING
# define DEBUGGING (1)
# endif
#else
# ifndef _MSC_VER
/* This assumes that you are using an optimizing compiler which
eliminates the resulting debug code. */
# define DPRINTF if (0) mxDebugPrintf
# define IF_DEBUGGING if (0)
# define DEBUGGING (0)
# else
/* MSVC doesn't do a good job here, so we use a different approach. */
# define DPRINTF 0 && mxDebugPrintf
# define IF_DEBUGGING if (0)
# define DEBUGGING (0)
# endif
#endif
/* --- Misc ------------------------------------------------------------- */
/* The usual bunch... */
#ifndef max
#define max(a,b) ((a>b)?(a):(b))
#endif
#ifndef min
#define min(a,b) ((a<b)?(a):(b))
#endif
/* Bit testing... returns 1 iff bit is on in value, 0 otherwise */
#ifndef testbit
# define testbit(value,bit) (((value) & (1<<(bit))) != 0)
#endif
/* Flag testing... returns 1 iff flag is on in value, 0 otherwise */
#ifndef testflag
# define testflag(value,flag) (((value) & (flag)) != 0)
#endif
/* EOF */
#endif
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