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#include <cassert>
#include <iostream>
#include <new>
#include "clickhouse_config.h"
#include <Common/memory.h>
#if defined(OS_DARWIN) && (USE_JEMALLOC)
/// In case of OSX jemalloc register itself as a default zone allocator.
///
/// Sure jemalloc will register itself, since zone_register() declared with
/// constructor attribute (since zone_register is also forbidden from
/// optimizing out), however those constructors will be called before
/// constructors for global variable initializers (__cxx_global_var_init()).
///
/// So to make jemalloc under OSX more stable, we will call it explicitly from
/// global variable initializers so that each allocation will use it.
/// (NOTE: It is ok to call it twice, since zone_register() is a no-op if the
/// default zone is already replaced with something.)
///
/// Refs: https://github.com/jemalloc/jemalloc/issues/708
extern "C"
{
extern void zone_register();
}
static struct InitializeJemallocZoneAllocatorForOSX
{
InitializeJemallocZoneAllocatorForOSX()
{
zone_register();
/// jemalloc() initializes itself only on malloc()
/// and so if some global initializer will have free(nullptr)
/// jemalloc may trigger some internal assertion.
///
/// To prevent this, we explicitly call malloc(free()) here.
if (void * ptr = malloc(0))
{
free(ptr);
}
}
} initializeJemallocZoneAllocatorForOSX;
#endif
#if USE_GWP_ASAN
#error #include <gwp_asan/optional/options_parser.h>
/// Both clickhouse_new_delete and clickhouse_common_io links gwp_asan, but It should only init once, otherwise it
/// will cause unexpected deadlock.
static struct InitGwpAsan
{
InitGwpAsan()
{
gwp_asan::options::initOptions();
gwp_asan::options::Options &opts = gwp_asan::options::getOptions();
GuardedAlloc.init(opts);
///std::cerr << "GwpAsan is initialized, the options are { Enabled: " << opts.Enabled
/// << ", MaxSimultaneousAllocations: " << opts.MaxSimultaneousAllocations
/// << ", SampleRate: " << opts.SampleRate << " }\n";
}
} init_gwp_asan;
#endif
/// Replace default new/delete with memory tracking versions.
/// @sa https://en.cppreference.com/w/cpp/memory/new/operator_new
/// https://en.cppreference.com/w/cpp/memory/new/operator_delete
/// new
void * operator new(std::size_t size)
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace);
void * ptr = Memory::newImpl(size);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new(std::size_t size, std::align_val_t align)
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace, align);
void * ptr = Memory::newImpl(size, align);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new[](std::size_t size)
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace);
void * ptr = Memory::newImpl(size);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new[](std::size_t size, std::align_val_t align)
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace, align);
void * ptr = Memory::newImpl(size, align);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new(std::size_t size, const std::nothrow_t &) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace);
void * ptr = Memory::newNoExept(size);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new[](std::size_t size, const std::nothrow_t &) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace);
void * ptr = Memory::newNoExept(size);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new(std::size_t size, std::align_val_t align, const std::nothrow_t &) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace, align);
void * ptr = Memory::newNoExept(size, align);
trace.onAlloc(ptr, actual_size);
return ptr;
}
void * operator new[](std::size_t size, std::align_val_t align, const std::nothrow_t &) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::trackMemory(size, trace, align);
void * ptr = Memory::newNoExept(size, align);
trace.onAlloc(ptr, actual_size);
return ptr;
}
/// delete
/// C++17 std 21.6.2.1 (11)
/// If a function without a size parameter is defined, the program should also define the corresponding function with a size parameter.
/// If a function with a size parameter is defined, the program shall also define the corresponding version without the size parameter.
/// cppreference:
/// It's unspecified whether size-aware or size-unaware version is called when deleting objects of
/// incomplete type and arrays of non-class and trivially-destructible class types.
void operator delete(void * ptr) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace);
trace.onFree(ptr, actual_size);
Memory::deleteImpl(ptr);
}
void operator delete(void * ptr, std::align_val_t align) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, 0, align);
trace.onFree(ptr, actual_size);
Memory::deleteImpl(ptr);
}
void operator delete[](void * ptr) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace);
trace.onFree(ptr, actual_size);
Memory::deleteImpl(ptr);
}
void operator delete[](void * ptr, std::align_val_t align) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, 0, align);
trace.onFree(ptr, actual_size);
Memory::deleteImpl(ptr);
}
void operator delete(void * ptr, std::size_t size) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, size);
trace.onFree(ptr, actual_size);
Memory::deleteSized(ptr, size);
}
void operator delete(void * ptr, std::size_t size, std::align_val_t align) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, size, align);
trace.onFree(ptr, actual_size);
Memory::deleteSized(ptr, size, align);
}
void operator delete[](void * ptr, std::size_t size) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, size);
trace.onFree(ptr, actual_size);
Memory::deleteSized(ptr, size);
}
void operator delete[](void * ptr, std::size_t size, std::align_val_t align) noexcept
{
AllocationTrace trace;
std::size_t actual_size = Memory::untrackMemory(ptr, trace, size, align);
trace.onFree(ptr, actual_size);
Memory::deleteSized(ptr, size, align);
}
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