SOC and IPC

System On Chip (SOC) and interprocess communication (IPC). More...

Detailed Description

System On Chip (SOC) and interprocess communication (IPC).

This module is special in many ways. SOC might be spawned as a local or remote process, so we first instantiate SOCs before everything else with a special manner (partially because linux's tricky process handling semantics).

See also

foedus::EngineType

Collaboration diagram for SOC and IPC:

Files
file	fwd.hpp
	Forward declarations of classes in SOC package.
file	soc_id.hpp
	Typedefs of ID types used in SOC package.

Classes
class	foedus::soc::SharedCond
	A conditional variable that can be placed in shared memory and used from multiple processes. More...
struct	foedus::soc::MasterEngineStatus
	Current status of master engine. More...
struct	foedus::soc::ChildEngineStatus
	Current status of a child SOC engine. More...
struct	foedus::soc::GlobalMemoryAnchors
	Just a set of pointers within global_memory_ for ease of use. More...
struct	foedus::soc::NodeMemoryAnchors
	Same as GlobalMemoryAnchors except this is for node_memories_. More...
struct	foedus::soc::ThreadMemoryAnchors
	Part of NodeMemoryAnchors for each thread. More...
class	foedus::soc::SharedMemoryRepo
	Repository of all shared memory in one FOEDUS instance. More...
class	foedus::soc::SharedMutex
	A mutex that can be placed in shared memory and used from multiple processes. More...
class	foedus::soc::SharedMutexScope
	Auto-lock scope object for SharedMutex. More...
class	foedus::soc::SharedPolling
	A polling-wait mechanism that can be placed in shared memory and used from multiple processes. More...
class	foedus::soc::SharedRendezvous
	A one-time single-producer multiple-consumer event synchronization in shared memory for multiple processes. More...
class	foedus::soc::SocManager
	SOC manager, which maintains the shared resource across SOCs and, if this engine is a master engine, manages child SOCs. More...
class	foedus::soc::SocManagerPimpl
	Pimpl object of SocManager. More...
struct	foedus::soc::SocOptions
	Set of options for SOC manager. More...

Typedefs
typedef uint16_t	foedus::soc::SocId
	Represents an ID of an SOC, or NUMA node. More...
typedef uint64_t	foedus::soc::Upid
	Universal (or Unique) ID of a process. More...

Variables
const uint16_t	foedus::soc::kMaxSocs = 256U
	Maximum number of SOCs. More...

Typedef Documentation

typedef uint16_t foedus::soc::SocId

Represents an ID of an SOC, or NUMA node.

Definition at line 41 of file soc_id.hpp.

typedef uint64_t foedus::soc::Upid

Universal (or Unique) ID of a process.

This is so far what getpid() returns, but might be something else when we support remote nodes.

Definition at line 48 of file soc_id.hpp.

Variable Documentation

const uint16_t foedus::soc::kMaxSocs = 256U

Maximum number of SOCs.

Definition at line 35 of file soc_id.hpp.

Referenced by foedus::soc::SharedMemoryRepo::allocate_shared_memories().