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#pragma once
#include <TH/TH.h>
#ifdef __cplusplus
void libshm_init(const char *manager_exec_path);
// Superclass to run a constructor before THRefcountedMapAllocator
class THManagedMapAllocatorInit {
protected:
THManagedMapAllocatorInit(const char* manager_handle, const char* filename);
std::string manager_handle_;
};
// Like a THRefcountedMapAllocator, but it also makes use of an external
// shared memory manager process to ensure that shared memory regions actually
// get freed in the end (even if processes lose the memory).
class THManagedMapAllocator : private THManagedMapAllocatorInit, public THRefcountedMapAllocator {
public:
THManagedMapAllocator(const char* manager_handle, const char* filename, int flags, ptrdiff_t size);
void close() override;
~THManagedMapAllocator() { close(); }
static at::DataPtr makeDataPtr(const char* manager_handle, const char* filename, int flags, ptrdiff_t size);
static THManagedMapAllocator* fromDataPtr(const at::DataPtr&);
const char* manager_handle() const { return manager_handle_.c_str(); }
};
#endif
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