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62 lines
1.1 KiB
62 lines
1.1 KiB
#ifndef C_SRC_CRITICAL_SECTION_H_
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#define C_SRC_CRITICAL_SECTION_H_
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#include "erl_nif.h"
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#include "macros.h"
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class CriticalSection
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{
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public:
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CriticalSection() { }
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virtual ~CriticalSection() {}
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virtual void Enter() = 0;
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virtual void Leave() = 0;
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};
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class NullCriticalSection : public CriticalSection
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{
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public:
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NullCriticalSection() {}
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~NullCriticalSection() {}
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void Enter() override {}
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void Leave() override {}
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private:
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DISALLOW_COPY_AND_ASSIGN(NullCriticalSection);
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};
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class EnifCriticalSection : public CriticalSection
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{
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public:
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EnifCriticalSection() { mutex_ = enif_mutex_create(NULL);}
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~EnifCriticalSection() {enif_mutex_destroy(mutex_);}
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void Enter() override {enif_mutex_lock(mutex_);}
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void Leave() override {enif_mutex_unlock(mutex_);}
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private:
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ErlNifMutex *mutex_;
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DISALLOW_COPY_AND_ASSIGN(EnifCriticalSection);
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};
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class CritScope
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{
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public:
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explicit CritScope(CriticalSection *pp) : pcrit_(pp) { pcrit_->Enter();}
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~CritScope() {pcrit_->Leave();}
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private:
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CriticalSection *pcrit_;
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DISALLOW_COPY_AND_ASSIGN(CritScope);
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};
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#endif // C_SRC_CRITICAL_SECTION_H_
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