a simple, very easy to port memory allocator for 64-bit systems
libnalloc can be built as a shared library for Linux using make. Programs can be made to use that shared library using LD_PRELOAD. The memory allocator can be configured using the configurable options near the top of libnalloc.c. They can be used to change the memory usage or performance of libnalloc depending on the workload.
libnalloc comes with a test suite that can be built using make test. The built binary, test, tests malloc, realloc and free by calling them randomly for a set number of times and checks that no allocated values are overwritten by the memory allocator. The test suite has a few configurable options in test.c. By default the test suite uses the C library's malloc and free, in order to test libnalloc using test, you can use LD_PRELOAD to use libnalloc's malloc and free: LD_PRELOAD=libnalloc.so ./test.
Porting libnalloc to another operating system is very easy as libnalloc requires only four functions to be implemented in order to work. The four functions are described near the top of libnalloc.c and linux.c has a reference Linux implementation which you can look at. You can then build a shared library for your operating system or link libnalloc statically to your operating system's programs.
-
malloc -
realloc -
calloc -
free -
posix_memalign -
aligned_alloc -
memalign -
malloc_usable_size -
pvalloc -
valloc
- 32-bit support
-
errno