50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
#include "internal.h"
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#include <sys/shm.h>
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#include <csignal>
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Impl impl;
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void *getSharedMemory(){
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impl.sharedMemorySize = 8000;
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auto id = shmget(impl.sharedMemoryKey, impl.sharedMemorySize, 0644u | IPC_CREAT);
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if(id == -1){
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//error
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impl.sharedMemorySize = 0;
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return nullptr;
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}
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void *data = shmat(id, nullptr, 0);
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if(data == (char*)(-1)){
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//error
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impl.sharedMemorySize = 0;
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return nullptr;
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}
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return data;
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}
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int getSharedMemorySize(){
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return impl.sharedMemorySize;
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}
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void sendSignal(pid_t pid, int signalNumber) {
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kill(pid, signalNumber);
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}
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void onSignal(int signalNumber, void(*callback)(int)) {
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signal(signalNumber, callback);
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}
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InterruptEntry *getInterrupTable(){
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return (InterruptEntry*)((char*)getSharedMemory() + sizeof(Registers) + 1024/*reserved*/);
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}
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bool callEvent(EventType type) {
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auto ivt = getInterrupTable();
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if(ivt[type].pid != 0){
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sendSignal(ivt[type].pid, ivt[type].signum);
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}
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return true;
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}
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