sqw: testing interproc shm emulation

CMakeLists.txt

@@ -19,6 +19,7 @@ option(USE_RtMp "use auxilliary libraries" TRUE)
 option(USE_Dl "use dl libraries" TRUE)
 option(USE_Py "search for python" TRUE)
 option(USE_CUSTOM_THREADPOOL "use custom threadpool implementation" FALSE)
+option(USE_INTERPROC_EMUL "force shared memory emulation mode" FALSE)
 
 set(USE_TR1_FUNCS FALSE)
 set(BUILD_EXT_TOOLS FALSE)
@@ -92,6 +93,12 @@ if(USE_CUSTOM_THREADPOOL)
 endif()
 
 
+if(USE_INTERPROC_EMUL)
+	message("Using interprocess shared memory emulation mode.")
+	add_definitions(-D__USE_SQW_INTERPROC_EMUL__)
+endif()
+
+
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}" "."
 	"${PROJECT_SOURCE_DIR}/cmake" "${PROJECT_SOURCE_DIR}/tlibs")
 set(CMAKE_BINARY_DIR "${CMAKE_SOURCE_DIR}")

tools/monteconvo/sqw_proc.h

@@ -8,6 +8,21 @@
 #ifndef __SQW_PROC_H__
 #define __SQW_PROC_H__
 
+#ifdef __USE_SQW_INTERPROC_EMUL__
+	#include <boost/interprocess/detail/workaround.hpp>
+
+	// try to avoid certain shared memory syscalls
+	#undef BOOST_INTERPROCESS_XSI_SHARED_MEMORY_OBJECTS
+	#undef BOOST_INTERPROCESS_POSIX_SHARED_MEMORY_OBJECTS
+	#undef BOOST_INTERPROCESS_FILESYSTEM_BASED_POSIX_SHARED_MEMORY
+	#undef BOOST_INTERPROCESS_RUNTIME_FILESYSTEM_BASED_POSIX_SHARED_MEMORY
+
+	// force using emulation mode instead:
+	//   https://www.boost.org/doc/libs/1_75_0/doc/html/interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.sharedmemory.emulation
+	#define BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION
+	//#define BOOST_INTERPROCESS_SHARED_DIR_PATH "/tmp/shared_mem"
+#endif
+
 #include "sqw.h"
 #include <mutex>
 #include <memory>