util/system/sys_alloc.h


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#pragma once

#include <util/system/compiler.h>

#include <cstdlib> 
#include <new>
 
inline void* y_allocate(size_t n) { 
    void* r = malloc(n); 
 
    if (r == nullptr) {
        throw std::bad_alloc();
    } 
 
    return r;
}

inline void y_deallocate(void* p) { 
    free(p);
}

/**
 * Behavior of realloc from C++99 to C++11 changed (http://www.cplusplus.com/reference/cstdlib/realloc/).
 *
 * Our implementation work as C++99: if new_sz == 0 free will be called on 'p' and nullptr returned.
 */
inline void* y_reallocate(void* p, size_t new_sz) { 
    if (!new_sz) {
        if (p) {
            free(p);
        }
 
        return nullptr;
    }

    void* r = realloc(p, new_sz); 
 
    if (r == nullptr) {
        throw std::bad_alloc();
    } 
 
    return r;
}