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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <dlfcn.h>
#include <errno.h>
#include <new>
#include <stdlib.h>
class CreateAllocator
{
public:
CreateAllocator() : _initialized(0x192A3B4C) {
vespamalloc::createAllocator();
}
private:
unsigned _initialized;
};
static CreateAllocator _CreateAllocator __attribute__ ((init_priority (543)));
#if 1 // Only until we get on to a new C++14 compiler
void operator delete(void* ptr, std::size_t sz) noexcept __attribute__((visibility ("default")));
void operator delete[](void* ptr, std::size_t sz) noexcept __attribute__((visibility ("default")));
void operator delete(void* ptr, std::size_t sz, const std::nothrow_t&) noexcept __attribute__((visibility ("default")));
void operator delete[](void* ptr, std::size_t sz, const std::nothrow_t&) noexcept __attribute__((visibility ("default")));
#endif
void* operator new(std::size_t sz)
{
void * ptr(vespamalloc::createAllocator()->malloc(sz));
if (ptr == nullptr) {
throw std::bad_alloc();
}
return ptr;
}
void* operator new[](std::size_t sz)
{
return ::operator new(sz);
}
void* operator new(std::size_t sz, const std::nothrow_t&) noexcept {
return vespamalloc::_GmemP->malloc(sz);
}
void* operator new[](std::size_t sz, const std::nothrow_t&) noexcept {
return vespamalloc::_GmemP->malloc(sz);
}
void operator delete(void* ptr) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr); }
}
void operator delete[](void* ptr) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr); }
}
void operator delete(void* ptr, const std::nothrow_t&) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr); }
}
void operator delete[](void* ptr, const std::nothrow_t&) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr); }
}
void operator delete(void* ptr, std::size_t sz) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr, sz); }
}
void operator delete[](void* ptr, std::size_t sz) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr, sz); }
}
void operator delete(void* ptr, std::size_t sz, const std::nothrow_t&) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr, sz); }
}
void operator delete[](void* ptr, std::size_t sz, const std::nothrow_t&) noexcept {
if (ptr) { vespamalloc::_GmemP->free(ptr, sz); }
}
extern "C" {
void * malloc(size_t sz) {
return vespamalloc::createAllocator()->malloc(sz);
}
void * calloc(size_t nelem, size_t esz)
{
return vespamalloc::createAllocator()->calloc(nelem, esz);
}
void * realloc(void * ptr, size_t sz)
{
return vespamalloc::createAllocator()->realloc(ptr, sz);
}
void* memalign(size_t align, size_t sz) __attribute__((visibility ("default")));
void* memalign(size_t align, size_t sz)
{
void *ptr(nullptr);
size_t align_1(align - 1);
if ((align & (align_1)) == 0) {
ptr = vespamalloc::_GmemP->malloc(vespamalloc::_GmemP->getMinSizeForAlignment(align, sz));
ptr = (void *) ((size_t(ptr) + align_1) & ~align_1);
}
return ptr;
}
int posix_memalign(void** ptr, size_t align, size_t sz) __THROW __attribute__((visibility ("default")));
int posix_memalign(void** ptr, size_t align, size_t sz) __THROW
{
int retval(0);
if (((align % sizeof(void*)) != 0) ||
((align & (align - 1)) != 0) ||
(align == 0)) {
retval = EINVAL;
} else {
void* result = memalign(align, sz);
if (result) {
*ptr = result;
} else {
retval = ENOMEM;
}
}
return retval;
}
void *valloc(size_t size) __attribute__((visibility ("default")));
void *valloc(size_t size)
{
return memalign(sysconf(_SC_PAGESIZE),size);
}
void free(void * ptr) {
if (ptr) { vespamalloc::_GmemP->free(ptr); }
}
#define ALIAS(x) __attribute__ ((weak, alias (x), visibility ("default")))
void cfree(void *) ALIAS("free");
void* __libc_malloc(size_t sz) ALIAS("malloc");
void __libc_free(void* ptr) ALIAS("free");
void* __libc_realloc(void* ptr, size_t sz) ALIAS("realloc");
void* __libc_calloc(size_t n, size_t sz) ALIAS("calloc");
void __libc_cfree(void* ptr) ALIAS("cfree");
void* __libc_memalign(size_t align, size_t s) ALIAS("memalign");
int __posix_memalign(void** r, size_t a, size_t s) ALIAS("posix_memalign");
#undef ALIAS
#if 0
#include <dlfcn.h>
typedef void * (*dlopen_function) (const char *filename, int flag);
extern "C" VESPA_DLL_EXPORT void * local_dlopen(const char *filename, int flag) __asm__("dlopen");
VESPA_DLL_EXPORT void * local_dlopen(const char *filename, int flag)
{
// A pointer to the library version of dlopen.
static dlopen_function real_dlopen = nullptr;
const char * dlopenName = "dlopen";
if (real_dlopen == nullptr) {
real_dlopen = (dlopen_function) dlsym (RTLD_NEXT, dlopenName);
if (real_dlopen == nullptr) {
fprintf (stderr, "Could not find the dlopen function!\n");
abort();
}
}
//flag = (flag & ~RTLD_DEEPBIND & ~RTLD_NOW) | RTLD_LAZY;
//fprintf(stderr, "modified dlopen('%s', %0x)\n", filename, flag);
void * handle = real_dlopen(filename, flag);
fprintf(stderr, "dlopen('%s', %0x) = %p\n", filename, flag, handle);
return handle;
}
typedef int (*dlclose_function) (void * handle);
extern "C" VESPA_DLL_EXPORT int local_dlclose(void * handle) __asm__("dlclose");
VESPA_DLL_EXPORT int local_dlclose(void * handle)
{
// A pointer to the library version of dlclose.
static dlclose_function real_dlclose = nullptr;
const char * dlcloseName = "dlclose";
if (real_dlclose == nullptr) {
real_dlclose = (dlclose_function) dlsym (RTLD_NEXT, dlcloseName);
if (real_dlclose == nullptr) {
fprintf (stderr, "Could not find the dlclose function!\n");
abort();
}
}
int retval = real_dlclose(handle);
fprintf(stderr, "dlclose(%p) = %d\n", handle, retval);
return retval;
}
typedef void * (*dlsym_function) (void * handle, const char * symbol);
extern "C" VESPA_DLL_EXPORT void * local_dlsym(void * handle, const char * symbol) __asm__("dlsym");
VESPA_DLL_EXPORT void * local_dlsym(void * handle, const char * symbol)
{
// A pointer to the library version of dlsym.
static dlsym_function real_dlsym = nullptr;
const char * dlsymName = "dlsym";
if (real_dlsym == nullptr) {
real_dlsym = (dlsym_function) dlvsym (RTLD_NEXT, dlsymName, "GLIBC_2.2.5");
if (real_dlsym == nullptr) {
fprintf (stderr, "Could not find the dlsym function!\n");
abort();
}
}
if (handle == RTLD_NEXT) {
fprintf(stderr, "dlsym(RTLD_NEXT, %s)\n", symbol);
} else if (handle == RTLD_DEFAULT) {
fprintf(stderr, "dlsym(RTLD_DEFAULT, %s)\n", symbol);
} else {
fprintf(stderr, "dlsym(%p, %s)\n", handle, symbol);
}
void * retval = real_dlsym(handle, symbol);
if (handle == RTLD_NEXT) {
fprintf(stderr, "dlsym(RTLD_NEXT, %s) = %p\n", symbol, retval);
} else if (handle == RTLD_DEFAULT) {
fprintf(stderr, "dlsym(RTLD_DEFAULT, %s) = %p\n", symbol, retval);
} else {
fprintf(stderr, "dlsym(%p, %s) = %p\n", handle, symbol, retval);
}
return retval;
}
#endif
}
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