RTDECL(int) RTSemRWDestroy(RTSEMRW hRWSem)
{
/*
* Validate input.
*/
RTSEMRWINTERNAL *pThis = hRWSem;
if (pThis == NIL_RTSEMRW)
return VINF_SUCCESS;
AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
AssertReturn(pThis->u32Magic == RTSEMRW_MAGIC, VERR_INVALID_HANDLE);
Assert(!(ASMAtomicReadU64(&pThis->u64State) & (RTSEMRW_CNT_RD_MASK | RTSEMRW_CNT_WR_MASK)));
/*
* Invalidate the object and free up the resources.
*/
AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, ~RTSEMRW_MAGIC, RTSEMRW_MAGIC), VERR_INVALID_HANDLE);
RTSEMEVENTMULTI hEvtRead;
ASMAtomicXchgHandle(&pThis->hEvtRead, NIL_RTSEMEVENTMULTI, &hEvtRead);
int rc = RTSemEventMultiDestroy(hEvtRead);
AssertRC(rc);
RTSEMEVENT hEvtWrite;
ASMAtomicXchgHandle(&pThis->hEvtWrite, NIL_RTSEMEVENT, &hEvtWrite);
rc = RTSemEventDestroy(hEvtWrite);
AssertRC(rc);
#ifdef RTSEMRW_STRICT
RTLockValidatorRecSharedDelete(&pThis->ValidatorRead);
RTLockValidatorRecExclDelete(&pThis->ValidatorWrite);
#endif
RTMemFree(pThis);
return VINF_SUCCESS;
}
RTDECL(int) RTSemXRoadsDestroy(RTSEMXROADS hXRoads)
{
/*
* Validate input.
*/
RTSEMXROADSINTERNAL *pThis = hXRoads;
if (pThis == NIL_RTSEMXROADS)
return VINF_SUCCESS;
AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
AssertReturn(pThis->u32Magic == RTSEMXROADS_MAGIC, VERR_INVALID_HANDLE);
Assert(!(ASMAtomicReadU64(&pThis->u64State) & (RTSEMXROADS_CNT_NS_MASK | RTSEMXROADS_CNT_EW_MASK)));
/*
* Invalidate the object and free up the resources.
*/
AssertReturn(ASMAtomicCmpXchgU32(&pThis->u32Magic, RTSEMXROADS_MAGIC_DEAD, RTSEMXROADS_MAGIC), VERR_INVALID_HANDLE);
RTSEMEVENTMULTI hEvt;
ASMAtomicXchgHandle(&pThis->aDirs[0].hEvt, NIL_RTSEMEVENTMULTI, &hEvt);
int rc = RTSemEventMultiDestroy(hEvt);
AssertRC(rc);
ASMAtomicXchgHandle(&pThis->aDirs[1].hEvt, NIL_RTSEMEVENTMULTI, &hEvt);
rc = RTSemEventMultiDestroy(hEvt);
AssertRC(rc);
RTMemFree(pThis);
return VINF_SUCCESS;
}
/**
* Changes an alias to point to a new address space.
*
* Not all the aliases can be changed, currently it's only DBGF_AS_GLOBAL
* and DBGF_AS_KERNEL.
*
* @returns VBox status code.
* @param pUVM The user mode VM handle.
* @param hAlias The alias to change.
* @param hAliasFor The address space hAlias should be an alias for. This
* can be an alias. The caller's reference to this address
* space will NOT be consumed.
*/
VMMR3DECL(int) DBGFR3AsSetAlias(PUVM pUVM, RTDBGAS hAlias, RTDBGAS hAliasFor)
{
/*
* Input validation.
*/
UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
AssertMsgReturn(DBGF_AS_IS_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
AssertMsgReturn(!DBGF_AS_IS_FIXED_ALIAS(hAlias), ("%p\n", hAlias), VERR_INVALID_PARAMETER);
RTDBGAS hRealAliasFor = DBGFR3AsResolveAndRetain(pUVM, hAliasFor);
if (hRealAliasFor == NIL_RTDBGAS)
return VERR_INVALID_HANDLE;
/*
* Make sure the handle has is already in the database.
*/
int rc = VERR_NOT_FOUND;
DBGF_AS_DB_LOCK_WRITE(pUVM);
if (RTAvlPVGet(&pUVM->dbgf.s.AsHandleTree, hRealAliasFor))
{
/*
* Update the alias table and release the current address space.
*/
RTDBGAS hAsOld;
ASMAtomicXchgHandle(&pUVM->dbgf.s.ahAsAliases[DBGF_AS_ALIAS_2_INDEX(hAlias)], hRealAliasFor, &hAsOld);
uint32_t cRefs = RTDbgAsRelease(hAsOld);
Assert(cRefs > 0); Assert(cRefs != UINT32_MAX); NOREF(cRefs);
rc = VINF_SUCCESS;
}
DBGF_AS_DB_UNLOCK_WRITE(pUVM);
return rc;
}
RTDECL(int) RTTraceSetDefaultBuf(RTTRACEBUF hTraceBuf)
{
/* Retain the new buffer. */
if (hTraceBuf != NIL_RTTRACEBUF)
{
uint32_t cRefs = RTTraceBufRetain(hTraceBuf);
if (cRefs >= _1M)
return VERR_INVALID_HANDLE;
}
RTTRACEBUF hOldTraceBuf;
#ifdef IN_RC
hOldTraceBuf = (RTTRACEBUF)ASMAtomicXchgPtr((void **)&g_hDefaultTraceBuf, hTraceBuf);
#else
ASMAtomicXchgHandle(&g_hDefaultTraceBuf, hTraceBuf, &hOldTraceBuf);
#endif
if ( hOldTraceBuf != NIL_RTTRACEBUF
&& hOldTraceBuf != hTraceBuf)
{
/* Race prevention kludge. */
#ifndef IN_RC
RTThreadSleep(33);
#endif
RTTraceBufRelease(hOldTraceBuf);
}
return VINF_SUCCESS;
}
