#ifndef GDHELPERS_H
#define GDHELPERS_H 1

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

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

char *gd_strtok_r(char *s, const 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)

/* The extended version of gdReallocEx will free *ptr if the
 * realloc fails. */
void *gdReallocEx(void *ptr, size_t size);

/* Internal deterministic allocation hook used by the vector2d failure tests. */
void *gdVector2dMalloc(size_t size);
void gdVector2dTestSetAllocationFailureCountdown(int countdown);

/* 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);
int overflowMul3(int a, int b, int c);

#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

#define DPCM2DPI(dpcm) (unsigned int)((dpcm) * 2.54 + 0.5)
#define DPM2DPI(dpm) (unsigned int)((dpm) * 0.0254 + 0.5)
#define DPI2DPCM(dpi) (unsigned int)((dpi) / 2.54 + 0.5)
#define DPI2DPM(dpi) (unsigned int)((dpi) / 0.0254 + 0.5)

#endif /* GDHELPERS_H */
