detectors/slsDetectorPackage
24
0
Fork 0
mirror of https://github.com/slsdetectorgroup/slsDetectorPackage.git synced 2026-01-01 17:11:17 +01:00
Code Issues Actions Packages Releases Activity

initial changes

Browse Source
This commit is contained in:
Erik Frojdh
2019-03-12 08:22:07 +01:00
parent 6765fd0dc8
commit a01d68a61f
6 changed files with 100 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
slsDetectorSoftware/sharedMemory/SharedMemory.cpp
View File

@@ -3,6 +3,9 @@
#include "ansi.h"
#include "logger.h"
#include "slsDetector.h"
#include "multiSlsDetector.h"
#include <iostream>
#include <stdio.h> // printf
#include <cerrno> // errno
@@ -18,7 +21,8 @@
#define SHM_SLS_PREFIX "_sls_"
#define SHM_ENV_NAME "SLSDETNAME"
SharedMemory::SharedMemory(int multiId, int slsId):
template<typename T>
SharedMemory<T>::SharedMemory(int multiId, int slsId):
fd(-1),
shmSize(0)
{
@@ -26,14 +30,14 @@ SharedMemory::SharedMemory(int multiId, int slsId):
}
SharedMemory::~SharedMemory(){
template<typename T>
SharedMemory<T>::~SharedMemory(){
if (fd >= 0)
close(fd);
}
bool SharedMemory::IsExisting() {
template<typename T>
bool SharedMemory<T>::IsExisting() {
bool ret = true;
int tempfd = shm_open(name.c_str(), O_RDWR, 0);
if ((tempfd < 0) && (errno == ENOENT)) {
@@ -43,12 +47,13 @@ bool SharedMemory::IsExisting() {
return ret;
}
std::string SharedMemory::GetName() {
template<typename T>
std::string SharedMemory<T>::GetName() {
return name;
}
void* SharedMemory::CreateSharedMemory(size_t sz){
template<typename T>
void SharedMemory<T>::CreateSharedMemory(size_t sz){
// create
fd = shm_open(name.c_str(), O_CREAT | O_TRUNC | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
@@ -65,12 +70,15 @@ void* SharedMemory::CreateSharedMemory(size_t sz){
}
// map
void* addr = MapSharedMemory(sz);
// void* addr = MapSharedMemory(sz);
shared_struct = MapSharedMemory(sz);
FILE_LOG(logINFO) << "Shared memory created " << name;
return addr;
// return addr;
}
void* SharedMemory::OpenSharedMemory(size_t sz){
template<typename T>
void SharedMemory<T>::OpenSharedMemory(size_t sz){
// open
fd = shm_open(name.c_str(), O_RDWR, 0);
if (fd < 0) {
@@ -78,19 +86,21 @@ void* SharedMemory::OpenSharedMemory(size_t sz){
throw SharedMemoryException();
}
return MapSharedMemory(sz);
shared_struct = MapSharedMemory(sz);
// return MapSharedMemory(sz);
}
void SharedMemory::UnmapSharedMemory(void* addr) {
if (munmap(addr, shmSize) < 0) {
template<typename T>
void SharedMemory<T>::UnmapSharedMemory() {
if (munmap(shared_struct, shmSize) < 0) {
FILE_LOG(logERROR) << "Unmapping shared memory " << name << " failed: " << strerror(errno);
close(fd);
throw SharedMemoryException();
}
}
void SharedMemory::RemoveSharedMemory() {
template<typename T>
void SharedMemory<T>::RemoveSharedMemory() {
if (shm_unlink(name.c_str()) < 0) {
// silent exit if shm did not exist anyway
if (errno == ENOENT)
@@ -102,7 +112,8 @@ void SharedMemory::RemoveSharedMemory() {
}
void* SharedMemory::MapSharedMemory(size_t sz) {
template<typename T>
T* SharedMemory<T>::MapSharedMemory(size_t sz) {
void* addr = mmap(nullptr, sz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
FILE_LOG(logERROR) << "Mapping shared memory " << name << " failed: " << strerror(errno);
@@ -111,11 +122,11 @@ void* SharedMemory::MapSharedMemory(size_t sz) {
}
shmSize = sz;
close(fd);
return addr;
return (T*)addr;
}
std::string SharedMemory::ConstructSharedMemoryName(int multiId, int slsId) {
template<typename T>
std::string SharedMemory<T>::ConstructSharedMemoryName(int multiId, int slsId) {
// using environment path
std::string sEnvPath = "";
@@ -141,8 +152,8 @@ std::string SharedMemory::ConstructSharedMemoryName(int multiId, int slsId) {
return temp;
}
int SharedMemory::VerifySizeMatch(size_t expectedSize) {
template<typename T>
int SharedMemory<T>::VerifySizeMatch(size_t expectedSize) {
struct stat sb;
// could not fstat
if (fstat(fd, &sb) < 0) {
@@ -163,3 +174,5 @@ int SharedMemory::VerifySizeMatch(size_t expectedSize) {
return 0;
}
template class SharedMemory<sharedSlsDetector>;
template class SharedMemory<sharedMultiSlsDetector>;