sysio::vm::bounded_allocator Class Reference

#include <allocator.hpp>

Collaboration diagram for sysio::vm::bounded_allocator:

Public Member Functions
	bounded_allocator (size_t size)
template<typename T >
T *	alloc (size_t size=1)
template<typename T >
void	reclaim (const T *ptr, size_t size=0)
void	free ()
void	reset ()
	bounded_allocator (size_t size)
template<typename T >
T *	alloc (size_t size=1)
template<typename T >
void	reclaim (const T *ptr, size_t size=0)
void	free ()
void	reset ()

Public Attributes
size_t	mem_size
std::unique_ptr< uint8_t[]>	raw
size_t	index = 0

Detailed Description

Definition at line 21 of file allocator.hpp.

Constructor & Destructor Documentation

bounded_allocator() [1/2]

sysio::vm::bounded_allocator::bounded_allocator ( size_t size )

inline

Definition at line 23 of file allocator.hpp.

                                     {
         mem_size = size;
         raw      = std::unique_ptr<uint8_t[]>(new uint8_t[mem_size]);
      }

bounded_allocator() [2/2]

sysio::vm::bounded_allocator::bounded_allocator ( size_t size )

inline

Definition at line 23 of file allocator.hpp.

                                     {
         mem_size = size;
         raw      = std::unique_ptr<uint8_t[]>(new uint8_t[mem_size]);
      }

Member Function Documentation

alloc() [1/2]

template<typename T >

T * sysio::vm::bounded_allocator::alloc ( size_t size = 1 )

inline

Definition at line 28 of file allocator.hpp.

                                {
         SYS_VM_ASSERT((sizeof(T) * size) + index <= mem_size, wasm_bad_alloc, "wasm failed to allocate native");
         T* ret = (T*)(raw.get() + index);
         index += sizeof(T) * size;
         return ret;
      }

alloc() [2/2]

template<typename T >

T * sysio::vm::bounded_allocator::alloc ( size_t size = 1 )

inline

Definition at line 28 of file allocator.hpp.

                                {
         SYS_VM_ASSERT((sizeof(T) * size) + index <= mem_size, wasm_bad_alloc, "wasm failed to allocate native");
         T* ret = (T*)(raw.get() + index);
         index += sizeof(T) * size;
         return ret;
      }

free() [1/2]

void sysio::vm::bounded_allocator::free ( )

inline

Definition at line 38 of file allocator.hpp.

                  {
         SYS_VM_ASSERT(index > 0, wasm_double_free, "double free");
         index = 0;
      }

free() [2/2]

void sysio::vm::bounded_allocator::free ( )

inline

Definition at line 38 of file allocator.hpp.

                  {
         SYS_VM_ASSERT(index > 0, wasm_double_free, "double free");
         index = 0;
      }

reclaim() [1/2]

template<typename T >

void sysio::vm::bounded_allocator::reclaim ( const T * ptr, size_t size = 0 )

inline

Definition at line 36 of file allocator.hpp.

{ /* noop for now */ }

reclaim() [2/2]

template<typename T >

void sysio::vm::bounded_allocator::reclaim ( const T * ptr, size_t size = 0 )

inline

Definition at line 36 of file allocator.hpp.

{ /* noop for now */ }

reset() [1/2]

void sysio::vm::bounded_allocator::reset ( )

inline

Definition at line 42 of file allocator.hpp.

{ index = 0; }

reset() [2/2]

void sysio::vm::bounded_allocator::reset ( )

inline

Definition at line 42 of file allocator.hpp.

{ index = 0; }

Member Data Documentation

index

size_t sysio::vm::bounded_allocator::index = 0

Definition at line 45 of file allocator.hpp.

mem_size

size_t sysio::vm::bounded_allocator::mem_size

Definition at line 43 of file allocator.hpp.

raw

std::unique_ptr< uint8_t[]> sysio::vm::bounded_allocator::raw

Definition at line 44 of file allocator.hpp.

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The documentation for this class was generated from the following files:

• libraries/sys-vm/include/sysio/sysio/vm/allocator.hpp
• libraries/sys-vm/include/sysio/vm/allocator.hpp