#ifndef GDHELPERS_H
#define GDHELPERS_H 1

#include <sys/types.h>
#include "php.h"

/* TBB: strtok_r is not universal; provide an implementation of it. */

extern char *gd_strtok_r(char *s, char *sep, char **state);

/* These functions wrap memory management. gdFree is
in gd.h, where callers can utilize it to correctly
free memory allocated by these functions with the
right version of free(). */
#define gdCalloc(nmemb, size) ecalloc(nmemb, size)
#define gdMalloc(size) emalloc(size)
#define gdRealloc(ptr, size) erealloc(ptr, size)
#define gdEstrdup(ptr) estrdup(ptr)
#define gdFree(ptr) efree(ptr)
#define gdPMalloc(ptr) pemalloc(ptr, 1)
#define gdPFree(ptr) pefree(ptr, 1)
#define gdPEstrdup(ptr) pestrdup(ptr, 1)

/* Returns nonzero if multiplying the two quantities will
result in integer overflow. Also returns nonzero if
either quantity is negative. By Phil Knirsch based on
netpbm fixes by Alan Cox. */

int overflow2(int a, int b);

#ifdef ZTS
#define gdMutexDeclare(x) MUTEX_T x
#define gdMutexSetup(x) x = tsrm_mutex_alloc()
#define gdMutexShutdown(x) tsrm_mutex_free(x)
#define gdMutexLock(x) tsrm_mutex_lock(x)
#define gdMutexUnlock(x) tsrm_mutex_unlock(x)
#else
#define gdMutexDeclare(x)
#define gdMutexSetup(x)
#define gdMutexShutdown(x)
#define gdMutexLock(x)
#define gdMutexUnlock(x)
#endif

#endif /* GDHELPERS_H */