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#pragma once
#include <cstdint>
#include <cstring>
#include <mutex>
#include <unordered_map>
#include <c10/core/Allocator.h>
#include <c10/macros/Export.h>
#include <c10/util/Flags.h>
// TODO: rename to c10
C10_DECLARE_bool(caffe2_report_cpu_memory_usage);
namespace c10 {
using MemoryDeleter = void (*)(void*);
// A helper function that is basically doing nothing.
C10_API void NoDelete(void*);
// A simple struct that is used to report C10's memory allocation,
// deallocation status and out-of-memory events to the profiler
class C10_API ProfiledCPUMemoryReporter {
public:
ProfiledCPUMemoryReporter() = default;
void New(void* ptr, size_t nbytes);
void OutOfMemory(size_t nbytes);
void Delete(void* ptr);
private:
std::mutex mutex_;
std::unordered_map<void*, size_t> size_table_;
size_t allocated_ = 0;
size_t log_cnt_ = 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();
// The CPUCachingAllocator is experimental and might disappear in the future.
// The only place that uses it is in StaticRuntime.
// Set the CPU Caching Allocator
C10_API void SetCPUCachingAllocator(Allocator* alloc, uint8_t priority = 0);
// Get the CPU Caching Allocator
C10_API Allocator* GetCPUCachingAllocator();
} // namespace c10
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