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https://github.com/Atmosphere-NX/Atmosphere.git
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65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <switch/types.h>
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#include <switch/result.h>
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#include <switch/kernel/mutex.h>
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#include <switch/sf/service.h>
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#include <switch/services/sm.h>
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typedef struct ServiceGuard {
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Mutex mutex;
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u32 refCount;
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} ServiceGuard;
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NX_INLINE bool serviceGuardBeginInit(ServiceGuard* g)
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{
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mutexLock(&g->mutex);
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return (g->refCount++) == 0;
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}
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NX_INLINE Result serviceGuardEndInit(ServiceGuard* g, Result rc, void (*cleanupFunc)(void))
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{
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if (R_FAILED(rc)) {
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cleanupFunc();
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--g->refCount;
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}
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mutexUnlock(&g->mutex);
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return rc;
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}
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NX_INLINE void serviceGuardExit(ServiceGuard* g, void (*cleanupFunc)(void))
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{
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mutexLock(&g->mutex);
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if (g->refCount && (--g->refCount) == 0)
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cleanupFunc();
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mutexUnlock(&g->mutex);
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}
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#define NX_GENERATE_SERVICE_GUARD_PARAMS(name, _paramdecl, _parampass) \
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\
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static ServiceGuard g_##name##Guard; \
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NX_INLINE Result _##name##Initialize _paramdecl; \
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static void _##name##Cleanup(void); \
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\
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Result name##Initialize _paramdecl \
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{ \
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Result rc = 0; \
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if (serviceGuardBeginInit(&g_##name##Guard)) \
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rc = _##name##Initialize _parampass; \
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return serviceGuardEndInit(&g_##name##Guard, rc, _##name##Cleanup); \
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} \
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\
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void name##Exit(void) \
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{ \
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serviceGuardExit(&g_##name##Guard, _##name##Cleanup); \
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}
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#define NX_GENERATE_SERVICE_GUARD(name) NX_GENERATE_SERVICE_GUARD_PARAMS(name, (void), ())
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#ifdef __cplusplus
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}
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#endif
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