/**
* Initializes the thread database.
*
* @returns iprt status code.
*/
DECLHIDDEN(int) rtThreadInit(void)
{
#ifdef IN_RING3
int rc = VINF_ALREADY_INITIALIZED;
if (g_ThreadRWSem == NIL_RTSEMRW)
{
/*
* We assume the caller is the 1st thread, which we'll call 'main'.
* But first, we'll create the semaphore.
*/
rc = RTSemRWCreateEx(&g_ThreadRWSem, RTSEMRW_FLAGS_NO_LOCK_VAL, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
if (RT_SUCCESS(rc))
{
rc = rtThreadNativeInit();
if (RT_SUCCESS(rc))
rc = rtThreadAdopt(RTTHREADTYPE_DEFAULT, 0, RTTHREADINT_FLAGS_MAIN, "main");
if (RT_SUCCESS(rc))
rc = rtSchedNativeCalcDefaultPriority(RTTHREADTYPE_DEFAULT);
if (RT_SUCCESS(rc))
{
g_frtThreadInitialized = true;
return VINF_SUCCESS;
}
/* failed, clear out */
RTSemRWDestroy(g_ThreadRWSem);
g_ThreadRWSem = NIL_RTSEMRW;
}
}
#elif defined(IN_RING0)
int rc;
/*
* Create the spinlock and to native init.
*/
Assert(g_ThreadSpinlock == NIL_RTSPINLOCK);
rc = RTSpinlockCreate(&g_ThreadSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "RTThread");
if (RT_SUCCESS(rc))
{
rc = rtThreadNativeInit();
if (RT_SUCCESS(rc))
{
g_frtThreadInitialized = true;
return VINF_SUCCESS;
}
/* failed, clear out */
RTSpinlockDestroy(g_ThreadSpinlock);
g_ThreadSpinlock = NIL_RTSPINLOCK;
}
#else
# error "!IN_RING0 && !IN_RING3"
#endif
return rc;
}
RTDECL(int) RTSemRWCreate(PRTSEMRW phRWSem)
{
return RTSemRWCreateEx(phRWSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, "RTSemRW");
}
