30 lines
751 B
C
30 lines
751 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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int main(){
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const int shmSize = 4096;
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const char* shmName = "FOX";
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const char* message_0 = "Hello, ";
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const char* message_1 = "Shared Memory!\n";
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int shm_fd; // Shared memory to file descripter
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char* ptr; // Shared memory to pointer
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shm_fd = shm_open(shmName, O_CREAT | O_RDWR, 0666);
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ftruncate(shm_fd, shmSize);
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ptr = (char*) mmap(0, shmSize, PROT_READ | PROT_WRITE, MAP_SHARED, shm_fd, 0);
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sprintf(ptr, "%s", message_0);
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ptr += strlen(message_0);
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sprintf(ptr, "%s", message_1);
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ptr += strlen(message_1);
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return 0;
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} |