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slsDetectorSoftware: sharedmemory, appends environment variable of SLS_SHM_NAME to shm name

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This commit is contained in:
maliakal_d 2018-07-06 15:30:06 +02:00
parent ecd0c810ca
commit 37dd5fb902
1 changed files with 15 additions and 2 deletions
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17
slsDetectorSoftware/sharedMemory/SharedMemory.cpp
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@ -11,7 +11,11 @@
#include <sys/stat.h> // fstat #include <sys/stat.h> // fstat
#include <sys/mman.h> // shared memory #include <sys/mman.h> // shared memory
#include <sstream> #include <sstream>
#include "stdlib.h"
#define SHM_MULTI_PREFIX "/slsDetectorPackage_multi_"
#define SHM_SLS_PREFIX "_sls_"
#define SHM_ENV_NAME "SLS_SHM_NAME"
SharedMemory::SharedMemory(int multiId, int slsId): SharedMemory::SharedMemory(int multiId, int slsId):
fd(-1), fd(-1),
@ -116,11 +120,20 @@ void* SharedMemory::MapSharedMemory(size_t sz) {
std::string SharedMemory::ConstructSharedMemoryName(int multiId, int slsId) { std::string SharedMemory::ConstructSharedMemoryName(int multiId, int slsId) {
// using environment path
string sEnvPath = "";
char* envpath = getenv(SHM_ENV_NAME);
if (envpath != NULL) {
sEnvPath.assign(envpath);
sEnvPath.insert(0,"_");
}
stringstream ss; stringstream ss;
if (slsId < 0) if (slsId < 0)
ss << "/slsDetectorPackage_multi_" << multiId; ss << SHM_MULTI_PREFIX << multiId << sEnvPath;
else else
ss << "/slsDetectorPackage_multi_" << multiId << "_sls_" << slsId; ss << SHM_MULTI_PREFIX << multiId << SHM_SLS_PREFIX << slsId << sEnvPath;
std::string temp = ss.str(); std::string temp = ss.str();
if (temp.length() > NAME_MAX) { if (temp.length() > NAME_MAX) {