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Code Issues Releases Wiki Activity

ircd::ios: Add interface for user allocation closure at descriptor site.

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This commit is contained in:
Jason Volk 2019-03-27 02:49:28 -07:00
parent 02f413c834
commit 3225c1fdfe
2 changed files with 34 additions and 4 deletions
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11
include/ircd/ios.h
View file

@ -70,6 +70,9 @@ struct ircd::ios::descriptor
{
static uint64_t ids;
static void *default_allocator(handler &, const size_t &);
static void default_deallocator(handler &, void *const &, const size_t &);
string_view name;
uint64_t id {++ids};
uint64_t calls {0};
@ -81,7 +84,13 @@ struct ircd::ios::descriptor
uint64_t slice_total {0};
uint64_t slice_last {0};
descriptor(const string_view &name);
std::function<void *(handler &, const size_t &)> allocator;
std::function<void (handler &, void *const &, const size_t &)> deallocator;
descriptor(const string_view &name,
const decltype(allocator) & = default_allocator,
const decltype(deallocator) & = default_deallocator);
descriptor(descriptor &&) = delete;
descriptor(const descriptor &) = delete;
~descriptor() noexcept;

27
ircd/ios.cc
View file

@ -124,9 +124,15 @@ ircd::ios::descriptor::ids;
// descriptor::descriptor
//
ircd::ios::descriptor::descriptor(const string_view &name)
ircd::ios::descriptor::descriptor(const string_view &name,
const decltype(allocator) &allocator,
const decltype(deallocator) &deallocator)
:name{name}
,allocator{allocator}
,deallocator{deallocator}
{
assert(allocator);
assert(deallocator);
}
ircd::ios::descriptor::~descriptor()
@ -134,6 +140,21 @@ noexcept
{
}
void
ircd::ios::descriptor::default_deallocator(handler &handler,
void *const &ptr,
const size_t &size)
{
::operator delete(ptr, size);
}
void *
ircd::ios::descriptor::default_allocator(handler &handler,
const size_t &size)
{
return ::operator new(size);
}
//
// handler
//
@ -189,7 +210,7 @@ ircd::ios::handler::deallocate(handler *const &handler,
{
assert(handler && handler->descriptor);
auto &descriptor(*handler->descriptor);
::operator delete(ptr, size);
descriptor.deallocator(*handler, ptr, size);
descriptor.free_bytes += size;
++descriptor.frees;
}
@ -202,5 +223,5 @@ ircd::ios::handler::allocate(handler *const &handler,
auto &descriptor(*handler->descriptor);
descriptor.alloc_bytes += size;
++descriptor.allocs;
return ::operator new(size);
return descriptor.allocator(*handler, size);
}