gistfile1.txt

11-17 23:50:41.507 I/SHARED_MEMORY(14761): [create]
11-17 23:50:41.507 I/SHARED_MEMORY(14761): ashmem_create_region
11-17 23:50:41.507 I/SHARED_MEMORY(14761): __memfd_mem_open
11-17 23:50:41.507 I/SHARED_MEMORY(14761): sys_memfd_create
11-17 23:50:41.507 I/SHARED_MEMORY(14761): using memfd
11-17 23:50:41.507 I/SHARED_MEMORY(14761): ashmem_set_prot_region
11-17 23:50:41.507 I/SHARED_MEMORY(14761): __ashmem_is_memfd
11-17 23:50:41.507 I/SHARED_MEMORY(14761): memfd_set_prot_region
11-17 23:50:41.507 I/SHARED_MEMORY(14761): [size]
11-17 23:50:41.507 I/SHARED_MEMORY(14761): ashmem_valid
11-17 23:50:41.507 I/SHARED_MEMORY(14761): __ashmem_is_memfd
11-17 23:50:41.507 I/SHARED_MEMORY(14761): ashmem_get_size_region
11-17 23:50:41.507 I/SHARED_MEMORY(14761): __ashmem_is_memfd
11-17 23:50:41.507 I/SHARED_MEMORY(14761): [map]
11-17 23:50:41.507 I/SHARED_MEMORY(14761): [map] pointer: 0x73668ca000
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:97: created shared_memory fd: 27, size: 1
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:106: fd_socket fd: 28
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:107: connecting to fd_socket HELLO : 0
11-17 23:50:41.507 I/Unix Domain Socket(14761): connecting to \0HELLO
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:111: writing fd...
11-17 23:50:41.507 I/Unix Domain Socket(14761): sent fd: 27, from socket fd 28
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:113: wrote fd
11-17 23:50:41.507 I/trace   (14761): android_daw/sdk/ipc/SocketClient.hx:115: FD_SOCKET CLOSED
11-17 23:50:41.512 I/trace   (14761): src/Main.hx:23: connected to server
11-17 23:50:41.516 I/Unix Domain Socket(14691): status = 0
11-17 23:50:41.516 I/Unix Domain Socket(14691): received fd: 77, from socket fd 71
11-17 23:50:41.516 I/SHARED_MEMORY(14691): [size]
11-17 23:50:41.516 I/SHARED_MEMORY(14691): ashmem_valid
11-17 23:50:41.516 I/SHARED_MEMORY(14691): __ashmem_is_memfd
11-17 23:50:41.516 I/SHARED_MEMORY(14691): ashmem_get_size_region
11-17 23:50:41.516 I/SHARED_MEMORY(14691): __ashmem_is_memfd
11-17 23:50:41.516 I/SHARED_MEMORY(14691): [map]
11-17 23:50:41.516 E/SHARED_MEMORY(14691): mmap failed for SHARED_MEMORY__map(IPC_77): Invalid argument

SharedMemory.hx

class SharedMemory 
{
	@:native("SHARED_MEMORY__create")
	extern static function Ccreate(name: ConstCharStar, size: Int):Int;
	@:native("SHARED_MEMORY__size")
	extern static function Csize(name: ConstCharStar, fd: Int):Int;
	@:native("SHARED_MEMORY__map")
	extern static function Cmap(name: ConstCharStar, fd: Int, size: Int):Star<Char>;
	@:native("SHARED_MEMORY__read_byte")
	extern static function CreadByte(pointer: Star<Char>, pos: Int): Int;
	@:native("SHARED_MEMORY__write_byte")
	extern static function CwriteByte(pointer: Star<Char>, pos: Int, byte: Int);
	@:native("SHARED_MEMORY__munmap")
	extern static function Cmunmap(name: ConstCharStar, pointer: Star<Char>, size: Int): Int;
	@:native("SHARED_MEMORY__close")
	extern static function Cclose(name: ConstCharStar, fd: Int):Int;

	var name: String;
	var handle: Int;
	var size: Int;
	var pointer: Star<Char>;
	
	public function new(name: String, size: Int, ?fd: Int = null)
	{
		this.name = name;
		handle = fd == null ? Ccreate(name, size) : fd;
		if (handle > 0) {
			this.size = Csize(name, handle);
			if (this.size > 0) {
				pointer = Cmap(name, handle, size);
			} else {
				handle = 0;
				size = 0;
			}
		} else {
			size = 0;
		}
	}

SharedMemory.hx.native.cpp

int SHARED_MEMORY__create(const char * name, int size) {
	LOG_INFO(\"[create]\");
	if (size <= 0) {
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"cannot create shared mem (with name: %s) with a size of zero\", name);
		return 0;
	}
	int handle = ASharedMemory_create(name, size);
	if (handle > 0) {
		if (ASharedMemory_setProt(
		#ifdef NEED_ASHMEM_IMPL
		name,
		#endif
		handle, PROT_READ | PROT_WRITE) == 0) {
			return handle;
		}
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"failed to set shared mem (with name: %s) protection, errno: %d\", name, errno);
		// failed to prot fd, close it
		if (close(handle) < 0) {
			LOG_ERROR(\"close failed for SHARED_MEMORY__create(%s): %s\", name, strerror(errno));			
		}
	} else {
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"failed to create shared mem (with name: %s) errno: %d\", name, errno);
	}
	return 0;
}

int SHARED_MEMORY__size(const char * name, int fd) {
	LOG_INFO(\"[size]\");
	int s = ASharedMemory_getSize(
	#ifdef NEED_ASHMEM_IMPL
	name,
	#endif
	fd);
	if (s <= 0) {
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"failed to get size, shared mem (with name: %s) does not have a valid file descriptor: %d\", name, fd);
	}
	return s;
}

char* SHARED_MEMORY__map(const char * name, int fd, int size) {
	LOG_INFO(\"[map]\");
	char * buffer = (char * ) mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
	if (buffer == MAP_FAILED) {
		LOG_ERROR(\"mmap failed for SHARED_MEMORY__map(%s): %s\", name, strerror(errno));
		return NULL;
	}
	LOG_INFO(\"[map] pointer: %p\", buffer);
	if (buffer == NULL) {
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"failed to map buffer for shared mem (with name: %s), errno: %d\", name, errno);
	}
	return buffer;
}

int SHARED_MEMORY__read_byte(char* pointer, int pos) {
	LOG_INFO(\"[read]\");
	LOG_INFO(\"[read] pointer: %p\", pointer);
	return pointer[pos];
}

void SHARED_MEMORY__write_byte(char* pointer, int pos, int byte) {
	LOG_INFO(\"[write]\");
	LOG_INFO(\"[write] pointer: %p\", pointer);
	pointer[pos] = byte;
}

int SHARED_MEMORY__munmap(const char * name, char * pointer, int size) {
	LOG_INFO(\"[munmap]\");
	LOG_INFO(\"[munmap] pointer: %p\", pointer);
	int s = munmap(pointer, size);
	if (s < 0) {
		LOG_ERROR(\"munmap failed for SHARED_MEMORY__munmap(%s): %s\", name, strerror(errno));
		return s;
	}
	return s;
}

int SHARED_MEMORY__close(const char * name, int fd) {
	LOG_INFO(\"[close]\");
	int s = close(fd);
	if (s == -1) {
		__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, \"failed to close shared mem (with name: %s), errno: %d\", name, errno);
	}
	return s;
}