X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/libsecurityd/lib/SharedMemoryClient.h

diff --git a/Security/libsecurityd/lib/SharedMemoryClient.h b/Security/libsecurityd/lib/SharedMemoryClient.h
new file mode 100644
index 00000000..b24b73bf
--- /dev/null
+++ b/Security/libsecurityd/lib/SharedMemoryClient.h
@@ -0,0 +1,46 @@
+#ifndef __SHAREDMEMORYCLIENT__
+#define __SHAREDMEMORYCLIENT__
+
+
+
+#include <string>
+#include <stdlib.h>
+#include <securityd_client/SharedMemoryCommon.h>
+#include <security_utilities/threading.h>
+
+namespace Security
+{
+
+enum UnavailableReason {kURNone, kURMessageDropped, kURMessagePending, kURNoMessage, kURBufferCorrupt};
+
+class SharedMemoryClient
+{
+protected:
+	std::string mSegmentName;
+	size_t mSegmentSize;
+	Mutex mMutex;
+	
+	u_int8_t* mSegment;
+	u_int8_t* mDataArea;
+	u_int8_t* mDataPtr;
+	u_int8_t* mDataMax;
+	
+	SegmentOffsetType GetProducerCount ();
+	
+	void ReadData (void* buffer, SegmentOffsetType bytesToRead);
+	SegmentOffsetType ReadOffset ();
+	
+public:
+	SharedMemoryClient (const char* segmentName, SegmentOffsetType segmentSize);
+	virtual ~SharedMemoryClient ();
+	
+	bool ReadMessage (void* message, SegmentOffsetType &length, UnavailableReason &ur);
+	
+	const char* GetSegmentName ();
+	size_t GetSegmentSize ();
+};
+
+};
+
+
+#endif