gos_linux.h

/*
 * This file is subject to the terms of the GFX License. If a copy of
 * the license was not distributed with this file, you can obtain one at:
 *
 *              http://ugfx.io/license.html
 */
 
#ifndef _GOS_LINUX_H
#define _GOS_LINUX_H
 
#if GFX_USE_OS_LINUX
 
// We don't put this in the general sys_options.h as it is Linux specific.
#ifndef GFX_USE_POSIX_SEMAPHORES
    #define GFX_USE_POSIX_SEMAPHORES    GFXON
#endif
 
#include <sys/types.h>
#include <stdlib.h>
#include <pthread.h>
 
#if GFX_USE_POSIX_SEMAPHORES
    #include <semaphore.h>
#endif
 
typedef unsigned long       gTicks;
typedef void *              gThreadreturn;
typedef unsigned long       gDelay;
typedef pthread_t           gThread;
typedef int                 gThreadpriority;
typedef gU32                gSemcount;
typedef pthread_mutex_t     gMutex;
 
#define GFX_THREAD_FUNCTION(fnName, param)  gThreadreturn fnName(void *param)
#define GFX_THREAD_STACK(name, sz)          gU8 name[0];
#define gfxThreadReturn(retval)             return retval
 
#define gfxExit()                       exit(0)
#define gfxAlloc(sz)                    malloc(sz)
#define gfxRealloc(p,osz,nsz)           realloc(p, nsz)
#define gfxFree(ptr)                    free(ptr)
#define gfxMillisecondsToTicks(ms)      (ms)
#define gfxThreadMe()                   pthread_self()
#define gfxThreadClose(th)              (void)th
#define gfxMutexInit(pmtx)              pthread_mutex_init(pmtx, 0)
#define gfxMutexDestroy(pmtx)           pthread_mutex_destroy(pmtx)
#define gfxMutexEnter(pmtx)             pthread_mutex_lock(pmtx)
#define gfxMutexExit(pmtx)              pthread_mutex_unlock(pmtx)
#define gfxSemWaitI(psem)               gfxSemWait(psem, gDelayNone)
#define gfxSemSignalI(psem)             gfxSemSignal(psem)
 
#define gDelayNone              0
#define gDelayForever           ((gDelay)-1)
#define gSemMaxCount            ((gSemcount)-1)
#define gThreadpriorityLow      10
#define gThreadpriorityNormal   0
#define gThreadpriorityHigh     -10
 
#if GFX_USE_POSIX_SEMAPHORES
    typedef struct gSem {
        sem_t           sem;
        gSemcount       max;
    } gSem;
#else
    typedef struct gSem {
        pthread_mutex_t mtx;
        pthread_cond_t  cond;
        gSemcount       cnt;
        gSemcount       max;
    } gSem;
#endif
 
/*===========================================================================*/
/* Function declarations.                                                    */
/*===========================================================================*/
 
void gfxYield(void);
void gfxHalt(const char *msg);
void gfxSleepMilliseconds(gDelay ms);
void gfxSleepMicroseconds(gDelay ms);
gTicks gfxSystemTicks(void);
void gfxSystemLock(void);
void gfxSystemUnlock(void);
void gfxSemInit(gSem *psem, gSemcount val, gSemcount limit);
void gfxSemDestroy(gSem *psem);
gBool gfxSemWait(gSem *psem, gDelay ms);
void gfxSemSignal(gSem *psem);
gThread gfxThreadCreate(void *stackarea, gMemSize stacksz, gThreadpriority prio, GFX_THREAD_FUNCTION((*fn),p), void *param);
gThreadreturn gfxThreadWait(gThread thread);
 
#endif /* GFX_USE_OS_LINUX */
 
#endif /* _GOS_LINUX_H */