mirror of
https://github.com/slsdetectorgroup/slsDetectorPackage.git
synced 2025-04-22 14:38:14 +02:00
178 lines
5.3 KiB
C++
178 lines
5.3 KiB
C++
// #include "SharedMemory.h"
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// #include "sls_detector_exceptions.h"
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// #include "ansi.h"
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// #include "logger.h"
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// #include "slsDetector.h"
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// #include "multiSlsDetector.h"
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// #include <iostream>
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// #include <stdio.h> // printf
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// #include <cerrno> // errno
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// #include <cstring> // strerror
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// #include <unistd.h>
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// #include <fcntl.h> // O_CREAT, O_TRUNC..
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// #include <sys/stat.h> // fstat
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// #include <sys/mman.h> // shared memory
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// #include <sstream>
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// #include "stdlib.h"
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// #define SHM_MULTI_PREFIX "/slsDetectorPackage_multi_"
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// #define SHM_SLS_PREFIX "_sls_"
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// #define SHM_ENV_NAME "SLSDETNAME"
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// template<typename T>
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// SharedMemory<T>::SharedMemory(int multiId, int slsId):
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// fd(-1),
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// shmSize(0)
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// {
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// name = ConstructSharedMemoryName(multiId, slsId);
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// }
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// template<typename T>
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// SharedMemory<T>::~SharedMemory(){
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// if (fd >= 0)
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// close(fd);
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// }
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// template<typename T>
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// bool SharedMemory<T>::IsExisting() {
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// bool ret = true;
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// int tempfd = shm_open(name.c_str(), O_RDWR, 0);
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// if ((tempfd < 0) && (errno == ENOENT)) {
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// ret = false;
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// }
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// close(tempfd);
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// return ret;
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// }
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// template<typename T>
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// std::string SharedMemory<T>::GetName() {
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// return name;
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// }
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// template<typename T>
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// void SharedMemory<T>::CreateSharedMemory(size_t sz){
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// // create
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// fd = shm_open(name.c_str(), O_CREAT | O_TRUNC | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
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// if (fd < 0) {
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// FILE_LOG(logERROR) << "Create shared memory " << name << " failed: " << strerror(errno);
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// throw SharedMemoryException();
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// }
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// // resize
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// if (ftruncate(fd, sz) < 0) {
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// FILE_LOG(logERROR) << "Create shared memory " << name << " failed at ftruncate: " << strerror(errno);
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// close(fd);
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// RemoveSharedMemory();
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// throw SharedMemoryException();
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// }
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// // map
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// // void* addr = MapSharedMemory(sz);
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// shared_struct = MapSharedMemory(sz);
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// FILE_LOG(logINFO) << "Shared memory created " << name;
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// // return addr;
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// }
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// template<typename T>
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// void SharedMemory<T>::OpenSharedMemory(size_t sz){
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// // open
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// fd = shm_open(name.c_str(), O_RDWR, 0);
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// if (fd < 0) {
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// FILE_LOG(logERROR) << "Open existing shared memory " << name << " failed: " << strerror(errno);
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// throw SharedMemoryException();
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// }
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// shared_struct = MapSharedMemory(sz);
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// // return MapSharedMemory(sz);
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// }
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// template<typename T>
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// void SharedMemory<T>::UnmapSharedMemory() {
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// if (munmap(shared_struct, shmSize) < 0) {
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// FILE_LOG(logERROR) << "Unmapping shared memory " << name << " failed: " << strerror(errno);
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// close(fd);
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// throw SharedMemoryException();
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// }
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// }
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// template<typename T>
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// void SharedMemory<T>::RemoveSharedMemory() {
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// if (shm_unlink(name.c_str()) < 0) {
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// // silent exit if shm did not exist anyway
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// if (errno == ENOENT)
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// return;
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// FILE_LOG(logERROR) << "Free Shared Memory " << name << " Failed: " << strerror(errno);
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// throw SharedMemoryException();
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// }
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// FILE_LOG(logINFO) << "Shared memory deleted " << name;
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// }
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// template<typename T>
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// T* SharedMemory<T>::MapSharedMemory(size_t sz) {
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// void* addr = mmap(nullptr, sz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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// if (addr == MAP_FAILED) {
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// FILE_LOG(logERROR) << "Mapping shared memory " << name << " failed: " << strerror(errno);
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// close(fd);
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// throw SharedMemoryException();
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// }
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// shmSize = sz;
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// close(fd);
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// return (T*)addr;
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// }
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// template<typename T>
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// std::string SharedMemory<T>::ConstructSharedMemoryName(int multiId, int slsId) {
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// // using environment path
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// std::string sEnvPath = "";
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// char* envpath = getenv(SHM_ENV_NAME);
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// if (envpath != nullptr) {
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// sEnvPath.assign(envpath);
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// sEnvPath.insert(0,"_");
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// }
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// std::stringstream ss;
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// if (slsId < 0)
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// ss << SHM_MULTI_PREFIX << multiId << sEnvPath;
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// else
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// ss << SHM_MULTI_PREFIX << multiId << SHM_SLS_PREFIX << slsId << sEnvPath;
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// std::string temp = ss.str();
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// if (temp.length() > NAME_MAX) {
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// FILE_LOG(logERROR) << "Shared memory initialization failed. " <<
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// temp << " has " << temp.length() << " characters. \n"
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// "Maximum is " << NAME_MAX << ". Change the environment variable " << SHM_ENV_NAME;
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// throw SharedMemoryException();
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// }
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// return temp;
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// // }
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// template<typename T>
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// int SharedMemory<T>::VerifySizeMatch(size_t expectedSize) {
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// struct stat sb;
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// // could not fstat
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// if (fstat(fd, &sb) < 0) {
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// FILE_LOG(logERROR) << "Could not verify existing shared memory " << name << " size match "
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// "(could not fstat): " << strerror(errno);
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// close(fd);
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// throw SharedMemoryException();
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// }
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// //size does not match
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// long unsigned int sz = (long unsigned int)sb.st_size;
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// if (sz != expectedSize) {
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// FILE_LOG(logERROR) << "Existing shared memory " << name << " size does not match";
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// FILE_LOG(logDEBUG1) << "Expected " << expectedSize << ", found " << sz;
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// throw SharedMemoryException();
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// return 1;
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// }
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// return 0;
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// }
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// template class SharedMemory<sharedSlsDetector>;
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// template class SharedMemory<sharedMultiSlsDetector>;
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