Add device sharing support

include/icsneo/platform/posix/cdcacm.h

@@ -25,7 +25,7 @@ public:
 	 * in cdcacmlinux.cpp and cdcacmdarwin.cpp respectively
 	 * Other POSIX systems (BSDs, QNX, etc) will need bespoke code written in the future
 	 */
-	CDCACM(const device_eventhandler_t& err, neodevice_t& forDevice) : Driver(err), device(forDevice) {}
+	CDCACM(const device_eventhandler_t& err, neodevice_t& forDevice) : Driver(err, forDevice) {}
 	~CDCACM();
 	static void Find(std::vector<FoundDevice>& found);
 
@@ -37,7 +37,6 @@ public:
 	void awaitModeChangeComplete() override;
 
 private:
-	neodevice_t& device;
 	int fd = -1;
 	std::optional<ino_t> disallowedInode;
 	std::atomic<bool> modeChanging{false};

include/icsneo/platform/posix/ftdi.h

@@ -60,8 +60,6 @@ private:
 	void readTask();
 	void writeTask();
 	bool openable; // Set to false in the constructor if the object has not been found in searchResultDevices
-
-	neodevice_t& device;
 };
 
 }

include/icsneo/platform/posix/pcap.h

@@ -24,9 +24,9 @@ public:
 	bool isOpen() override;
 	bool close() override;
 	bool isEthernet() const override { return true; }
+	bool enableHeartbeat() const override { return true; }
 private:
 	char errbuf[PCAP_ERRBUF_SIZE] = { 0 };
-	neodevice_t& device;
 	uint8_t deviceMAC[6];
 	bool openable = true;
 	EthernetPacketizer ethPacketizer;

include/icsneo/platform/posix/sharedmemory.h

@@ -0,0 +1,36 @@
+#ifndef __SHAREDMEMORY_POSIX_H_
+#define __SHAREDMEMORY_POSIX_H_
+
+#ifdef __cplusplus
+
+#include <string>
+#include <optional>
+#include "icsneo/api/eventmanager.h"
+
+namespace icsneo {
+
+class SharedMemory {
+public:
+	SharedMemory() : report(makeEventHandler()) {};
+	~SharedMemory();
+	bool open(const std::string& name, uint32_t size, bool create = false);
+	bool close();
+	uint8_t* data();
+
+private:
+	virtual device_eventhandler_t makeEventHandler() {
+		return [](APIEvent::Type type, APIEvent::Severity severity)
+		{ EventManager::GetInstance().add(type, severity); };
+	}
+
+	device_eventhandler_t report;
+	std::optional<std::string> mName;
+	std::optional<std::pair<uint8_t*, uint32_t>> mData;
+	std::optional<bool> mCreated;
+};
+
+}
+
+#endif // __cplusplus
+
+#endif

include/icsneo/platform/posix/sharedsemaphore.h

@@ -0,0 +1,40 @@
+#ifndef __SHAREDSEMAPHORE_POSIX_H_
+#define __SHAREDSEMAPHORE_POSIX_H_
+
+#ifdef __cplusplus
+
+#include <string>
+#include <optional>
+#include <atomic>
+#include <semaphore.h>
+#include "icsneo/api/eventmanager.h"
+
+namespace icsneo {
+
+class SharedSemaphore {
+public:
+	~SharedSemaphore();
+	bool open(const std::string& name, bool create = false, unsigned initialCount = 0);
+	bool close();
+	bool wait(const std::chrono::milliseconds& timeout);
+	bool post();
+
+private:
+	virtual device_eventhandler_t makeEventHandler() {
+		return [](APIEvent::Type type, APIEvent::Severity severity)
+		{ EventManager::GetInstance().add(type, severity); };
+	}
+
+	std::atomic<bool> closing = false;
+	std::atomic<bool> waiting = false;
+	device_eventhandler_t report = makeEventHandler();
+	std::optional<const std::string> mName;
+	std::optional<sem_t*> semaphore;
+	std::optional<const bool> created;
+};
+
+}
+
+#endif // __cplusplus
+
+#endif