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59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
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/* Copyright (c) 2013-2016 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef SIO_LOCKSTEP_H
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#define SIO_LOCKSTEP_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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enum mLockstepPhase {
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TRANSFER_IDLE = 0,
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TRANSFER_STARTING,
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TRANSFER_STARTED,
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TRANSFER_FINISHING,
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TRANSFER_FINISHED
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};
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struct mLockstep {
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int attached;
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enum mLockstepPhase transferActive;
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int32_t transferCycles;
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void (*lock)(struct mLockstep*);
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void (*unlock)(struct mLockstep*);
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bool (*signal)(struct mLockstep*, unsigned mask);
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bool (*wait)(struct mLockstep*, unsigned mask);
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void (*addCycles)(struct mLockstep*, int id, int32_t cycles);
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int32_t (*useCycles)(struct mLockstep*, int id, int32_t cycles);
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int32_t (*unusedCycles)(struct mLockstep*, int id);
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void (*unload)(struct mLockstep*, int id);
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void* context;
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#ifndef NDEBUG
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int transferId;
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#endif
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};
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void mLockstepInit(struct mLockstep*);
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void mLockstepDeinit(struct mLockstep*);
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static inline void mLockstepLock(struct mLockstep* lockstep) {
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if (lockstep->lock) {
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lockstep->lock(lockstep);
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}
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}
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static inline void mLockstepUnlock(struct mLockstep* lockstep) {
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if (lockstep->unlock) {
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lockstep->unlock(lockstep);
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}
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}
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CXX_GUARD_END
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#endif
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