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#pragma once
#include <cstring>
#include <unordered_map>
#include <c10/core/Allocator.h>
#include <c10/util/Logging.h>
#include <c10/util/numa.h>
// TODO: rename to c10
C10_DECLARE_bool(caffe2_report_cpu_memory_usage);
C10_DECLARE_bool(caffe2_cpu_allocator_do_zero_fill);
C10_DECLARE_bool(caffe2_cpu_allocator_do_junk_fill);
namespace c10 {
#ifdef C10_MOBILE
// Use 16-byte alignment on mobile
// - ARM NEON AArch32 and AArch64
// - x86[-64] < AVX
constexpr size_t gAlignment = 16;
#else
// Use 64-byte alignment should be enough for computation up to AVX512.
constexpr size_t gAlignment = 64;
#endif
using MemoryDeleter = void (*)(void*);
// A helper function that is basically doing nothing.
C10_API void NoDelete(void*);
// Fill the data memory region of num bytes with a particular garbage pattern.
// The garbage value is chosen to be NaN if interpreted as floating point value,
// or a very large integer.
C10_API void memset_junk(void* data, size_t num);
C10_API void* alloc_cpu(size_t nbytes);
C10_API void free_cpu(void* data);
// A simple struct that is used to report C10's memory allocation and
// deallocation status to the profiler
class C10_API ProfiledCPUMemoryReporter {
public:
ProfiledCPUMemoryReporter() {}
void New(void* ptr, size_t nbytes);
void Delete(void* ptr);
private:
std::mutex mutex_;
std::unordered_map<void*, size_t> size_table_;
size_t allocated_ = 0;
};
C10_API ProfiledCPUMemoryReporter& profiledCPUMemoryReporter();
// Get the CPU Allocator.
C10_API at::Allocator* GetCPUAllocator();
// Sets the CPU allocator to the given allocator: the caller gives away the
// ownership of the pointer.
C10_API void SetCPUAllocator(at::Allocator* alloc, uint8_t priority = 0);
// Get the Default CPU Allocator
C10_API at::Allocator* GetDefaultCPUAllocator();
// Get the Default Mobile CPU Allocator
C10_API at::Allocator* GetDefaultMobileCPUAllocator();
} // namespace c10
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