46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include "../src/monocoque/simulatorapi/simapi/simapi/simdata.h"
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#include "../src/monocoque/simulatorapi/simapi/simapi/test.h"
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int main(int argc, char* argv[])
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{
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int res;
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int fd;
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pid_t pid;
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void* addr;
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SimData* data = malloc(sizeof(SimData));
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pid = getpid();
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// get shared memory file descriptor (NOT a file)
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fd = shm_open(TEST_MEM_FILE_LOCATION, O_RDONLY, S_IRUSR | S_IWUSR);
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if (fd == -1)
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{
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return 10;
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}
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// map shared memory to process address space
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addr = mmap(NULL, sizeof(SimData), PROT_READ, MAP_SHARED, fd, 0);
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if (addr == MAP_FAILED)
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{
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return 30;
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}
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// place data into memory
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memcpy(data, addr, sizeof(SimData));
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printf("PID %d: Read from shared memory: \"%s\"\n", pid, data);
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printf("PID %d: velocity: %i\n", pid, data->velocity);
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printf("PID %d: rpms: %i\n", pid, data->rpms);
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printf("PID %d: gear: %i\n", pid, data->gear);
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return 0;
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}
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