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#ifndef memory_hh_INCLUDED
#define memory_hh_INCLUDED
#include <cstddef>
#include <new>
#include "assert.hh"
#include "meta.hh"
namespace Kakoune
{
enum class MemoryDomain
{
Undefined,
String,
SharedString,
BufferContent,
BufferMeta,
Options,
Highlight,
Regions,
Display,
Mapping,
Commands,
Hooks,
Aliases,
EnvVars,
Faces,
Values,
Registers,
Client,
WordDB,
Selections,
Remote,
Events,
Completion,
Regex,
Count
};
inline const char* domain_name(MemoryDomain domain)
{
switch (domain)
{
case MemoryDomain::Undefined: return "Undefined";
case MemoryDomain::String: return "String";
case MemoryDomain::SharedString: return "SharedString";
case MemoryDomain::BufferContent: return "BufferContent";
case MemoryDomain::BufferMeta: return "BufferMeta";
case MemoryDomain::Options: return "Options";
case MemoryDomain::Highlight: return "Highlight";
case MemoryDomain::Regions: return "Regions";
case MemoryDomain::Display: return "Display";
case MemoryDomain::Mapping: return "Mapping";
case MemoryDomain::Commands: return "Commands";
case MemoryDomain::Hooks: return "Hooks";
case MemoryDomain::WordDB: return "WordDB";
case MemoryDomain::Aliases: return "Aliases";
case MemoryDomain::EnvVars: return "EnvVars";
case MemoryDomain::Faces: return "Faces";
case MemoryDomain::Values: return "Values";
case MemoryDomain::Registers: return "Registers";
case MemoryDomain::Client: return "Client";
case MemoryDomain::Selections: return "Selections";
case MemoryDomain::Remote: return "Remote";
case MemoryDomain::Events: return "Events";
case MemoryDomain::Completion: return "Completion";
case MemoryDomain::Regex: return "Regex";
case MemoryDomain::Count: break;
}
kak_assert(false);
return "";
}
struct MemoryStats
{
size_t allocated_bytes;
size_t allocation_count;
size_t total_allocation_count;
};
extern MemoryStats memory_stats[(size_t)MemoryDomain::Count];
inline void on_alloc(MemoryDomain domain, size_t size)
{
auto& stats = memory_stats[(int)domain];
stats.allocated_bytes += size;
++stats.allocation_count;
++stats.total_allocation_count;
}
inline void on_dealloc(MemoryDomain domain, size_t size)
{
auto& stats = memory_stats[(int)domain];
kak_assert(stats.allocated_bytes >= size);
stats.allocated_bytes -= size;
--stats.allocation_count;
}
template<typename T, MemoryDomain domain>
struct Allocator
{
using value_type = T;
Allocator() = default;
template<typename U>
Allocator(const Allocator<U, domain>&) {}
template<typename U>
struct rebind { using other = Allocator<U, domain>; };
T* allocate(size_t n)
{
size_t size = sizeof(T) * n;
on_alloc(domain, size);
return reinterpret_cast<T*>(::operator new(size));
}
void deallocate(T* ptr, size_t n)
{
size_t size = sizeof(T) * n;
on_dealloc(domain, size);
::operator delete(ptr);
}
};
template<typename T1, MemoryDomain d1, typename T2, MemoryDomain d2>
constexpr bool operator==(const Allocator<T1, d1>&, const Allocator<T2, d2>&)
{
return d1 == d2;
}
constexpr MemoryDomain memory_domain(Meta::AnyType) { return MemoryDomain::Undefined; }
template<typename T>
constexpr decltype(T::Domain) memory_domain(Meta::Type<T>) { return T::Domain; }
template<MemoryDomain d>
struct UseMemoryDomain
{
static constexpr MemoryDomain Domain = d;
[[gnu::always_inline]]
static void* operator new(size_t size)
{
on_alloc(Domain, size);
return ::operator new(size);
}
[[gnu::always_inline]]
static void* operator new[](size_t size)
{
on_alloc(Domain, size);
return ::operator new[](size);
}
[[gnu::always_inline]]
static void* operator new(size_t size, void* ptr)
{
return ::operator new(size, ptr);
}
[[gnu::always_inline]]
static void operator delete(void* ptr, size_t size)
{
on_dealloc(Domain, size);
::operator delete(ptr);
}
[[gnu::always_inline]]
static void operator delete[](void* ptr, size_t size)
{
on_dealloc(Domain, size);
::operator delete[](ptr);
}
};
}
#endif // memory_hh_INCLUDED
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